KR20240134068A - Adjustable weight club head - Google Patents

Abstract

Embodiments of a golf club head including an adjustable weighting system having a plurality of individual attachment locations capable of accommodating one or more weights are described herein. The golf club head described herein provides user adjustability of the club head center of gravity to adjust ball flight while maintaining a high moment of inertia and a rearward center of gravity location.

Description

ADJUSTABLE WEIGHT CLUB HEAD

Cross-reference to related applications

This application claims the benefit of U.S. Provisional Patent Application No. 62/545,770, filed August 15, 2017, and U.S. Provisional Patent Application No. 62/628,803, filed February 9, 2018, which are incorporated herein by reference in their entireties.

The present disclosure relates to a golf club head, and more particularly, to a golf club head having an adjustable weighting system.

Various characteristics of a golf club can affect the performance of the golf club. For example, the center of gravity and moment of inertia of the golf club head are characteristics that can affect performance.

The center of gravity and moment of inertia of a golf club head are functions of the mass distribution of the golf club head. In particular, the center of gravity and/or moment of inertia of a golf club head can be changed by distributing the mass of the club head closer to the sole portion of the club head, closer to the striking face of the club head, and/or closer to the toe portion and heel portion of the club head. By changing the moment of inertia of the club head, the forgiveness of the golf club, the flight direction of the golf ball, and/or the flight angle of the golf ball can be changed.

Many of the weighting systems in current golf club heads require bulky and complex internal structures to reduce the club head moment of inertia and move the club head center of gravity upward (crown side) and forward (face side). There is a need in the art for a club head that provides user adjustability of club head weighting and center of gravity location to influence ball flight (trajectory and/or spin) without negatively affecting the moment of inertia or center of gravity location.

Figure 1 is a front perspective view of a golf club head.
Figure 2 is a front view of the golf club head of Figure 1 showing the y-axis.
Figure 3 is a top view of the golf club head of Figure 1 showing the x-axis and y-axis.
Figure 4 is a side cross-sectional view of the golf club head of Figure 1.
Figure 5 is a bottom view of the golf club head of Figure 1.
Figure 6 is a rear perspective view of another golf club head.
Figure 7 is a bottom view of the golf club head of Figure 6.
Figure 8 is a bottom perspective view of an alternative embodiment of Figure 6.
Figure 9 is a rear view of another golf club head.
Figure 10 is an enlarged perspective view of the rear of the golf club head of Figure 9.
Figure 11 is a bottom perspective view of another golf club head.
Figure 12 is another bottom perspective view of the golf club head of Figure 11.
FIG. 13 is a cross-sectional view of the opening and tensioner of the golf club head of FIG. 11.
Fig. 14 is a front perspective view of the tensioner of the golf club head of Fig. 11.
FIG. 15 is a bottom view of another embodiment of a golf club head.
Fig. 16 is a bottom perspective view of the golf club head of Fig. 15.

Various embodiments of a golf club head having an adjustable weighting system are described herein. The adjustable weighting system includes a plurality of individual attachment locations capable of accommodating one or more weights. Each weight is attached to any of the individual attachment locations on the club head and is movable between them. Thus, the adjustable weighting system provides user adjustability of club head weighting and center of gravity location to alter ball flight (i.e., ball spin or trajectory).

In many embodiments, the adjustable weighting system described herein protrudes from the outer contour of the club head, or is minimally inset from the outer contour of the club head. Additionally, in many embodiments, the adjustable weighting system described herein is positioned near the periphery of the club head. The placement of the adjustable weighting system maximizes the periphery weighting and rearward weight placement to maximize the club head moment of inertia for tolerance on off-axis hits, and positions the club head center of gravity rearward and downward to increase launch angle and reduce backspin. Thus, the golf club heads described herein provide user adjustability of the club head center of gravity for ball flight control while maintaining optimal design and performance characteristics (high moment of inertia and rearward and downward center of gravity location).

Many of the embodiments described herein include an adjustable weighting system having one or more platforms, ledges, recesses or channels without requiring significant internal structures that would adversely affect the moment of inertia and head center of gravity location.

The terms “first,” “second,” “third,” “fourth,” and the like, which may be used in the description and claims, are intended to distinguish similar elements and not necessarily to describe a particular sequence or order of occurrence. It should be understood that the terminology used herein is interchangeable, so that the embodiments described herein can, under appropriate circumstances, be operated in sequences other than those illustrated or otherwise described herein. Furthermore, the terms “comprises,” “includes,” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, apparatus, or device that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherently attributed to such process, method, system, article, apparatus, or device.

Terms such as “left,” “right,” “front,” “rear,” “upper,” “lower,” “over,” “below,” and the like that may appear in the description and claims are used for the purpose of description and are not necessarily intended to describe permanent relative positions. It is to be understood that the terms used herein are interchangeable, under appropriate circumstances, to allow embodiments of the apparatus, method, and/or article of manufacture described herein to be operated in orientations other than those illustrated or otherwise described herein.

The term "bonding" is to be understood broadly, and refers to the joining of two or more elements, mechanically or otherwise. The bond (whether mechanical or not) may be of any length of time, for example permanent or semi-permanent, or merely momentary.

Other features and aspects will become apparent from a consideration of the following detailed description and the accompanying drawings. Before explaining any embodiments of the present disclosure in detail, it is to be understood that the present disclosure is not limited to the details or embodiments and arrangements of the components set forth in the following description or illustrated in the drawings in its application. The present disclosure may support other embodiments and may be practiced or carried out in various ways. It is to be understood that the description of specific embodiments is not intended to limit the present disclosure, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure. It is also to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

For ease of discussion and understanding and for illustrative purposes only, the following detailed description exemplifies the golf club heads (100, 11010, 12010, 13010, 6810) as woods. It should be understood that the woods are provided to illustrate one or more embodiments of the adjustable weighting system disclosed herein. However, the disclosed embodiments of the adjustable weighting system may be used with any desired wood, iron, hybrid, or other golf club that requires adjustable weighting. For example, the club heads may include, but are not limited to, a driver, a fairway wood, a hybrid, a 1-iron, a 2-iron, a 3-iron, a 4-iron, a 5-iron, a 6-iron, a 7-iron, an 8-iron, a 9-iron, a pitching wedge, a gap wedge, a utility wedge, a sand wedge, a lob wedge, and/or a putter.

Figures 1-3 illustrate a golf club head (100). The golf club head (100) includes a body portion (14) having a toe or toe end (18) opposite a heel or heel end (22). The body portion (14) also includes a crown or top (26) opposite a sole or bottom (30) and a rear or rear end (34) opposite a club face or face or striking face or striking plate (38). The club head further includes a perimeter or skirt or trailing edge (24) located at a connection or intersection between the bottom (30) and the crown (26) extending from near the heel (22) to near the toe (18). The club head (100) further includes an adjustable weighting system. At least a portion of the adjustable weighting system may be located at the sole (30), skirt (24), heel (22), toe (18), or any combination of the locations described above.

The golf club head (100) also includes a hosel (42) having a hosel axis (46) (illustrated in FIG. 2) extending through the center of the hosel (42). The hosel (42) is configured to receive a golf club shaft (not shown) having a grip (not shown). The golfer holds the grip (not shown) while swinging the golf club.

In many embodiments, the golf club head (100) comprises a driver-type club head. In these embodiments, the club head (100) may have a loft angle of less than about 16 degrees, less than about 15 degrees, less than about 14 degrees, less than about 13 degrees, less than about 12 degrees, less than about 11 degrees, or less than about 10 degrees. Additionally, in these embodiments, the club head (100) may have a volume greater than about 400 cc, greater than about 425 cc, greater than about 450 cc, greater than about 475 cc, greater than about 500 cc, greater than about 525 cc, greater than about 550 cc, greater than about 575 cc, greater than about 600 cc, greater than about 625 cc, greater than about 650 cc, greater than about 675 cc, or greater than about 700 cc. In some embodiments, the club head may have a volume of about 400 cc to 600 cc, about 500 cc to 600 cc, about 500 cc to 650 cc, about 550 cc to 700 cc, about 600 cc to 650 cc, about 600 cc to 700 cc, or about 600 cc to 800 cc.

In some embodiments, the club head may comprise a fairway wood type club head. In these embodiments, the loft angle of the club head (100) may be less than about 35 degrees, less than about 34 degrees, less than about 33 degrees, less than about 32 degrees, less than about 31 degrees, or less than about 30 degrees. Additionally, in these embodiments, the loft angle of the club head (100) may be greater than about 12 degrees, greater than about 13 degrees, greater than about 14 degrees, greater than about 15 degrees, greater than about 16 degrees, greater than about 17 degrees, greater than about 18 degrees, greater than about 19 degrees, or greater than about 20 degrees. Additionally, in these embodiments, the volume of the club head (100) can be less than about 400 cc, less than about 375 cc, less than about 350 cc, less than about 325 cc, less than about 300 cc, less than about 275 cc, less than about 250 cc, less than about 225 cc, or less than about 200 cc. For example, the volume of the club head can be about 300 cc - 400 cc, about 325 cc - 400 cc, about 350 cc - 400 cc, about 250 cc - 400 cc, about 250 cc - 350 cc, or about 275 cc - 375 cc.

In some embodiments, the club head may comprise a hybrid club head. In these embodiments, the loft angle of the club head (100) may be less than about 40 degrees, less than about 39 degrees, less than about 38 degrees, less than about 37 degrees, less than about 36 degrees, less than about 35 degrees, less than about 34 degrees, less than about 33 degrees, less than about 32 degrees, less than about 31 degrees, or less than about 30 degrees. Additionally, in these embodiments, the loft angle of the club head (100) may be greater than about 16 degrees, greater than about 17 degrees, greater than about 18 degrees, greater than about 19 degrees, greater than about 20 degrees, greater than about 21 degrees, greater than about 22 degrees, greater than about 23 degrees, greater than about 24 degrees, or greater than about 25 degrees. Additionally, in these embodiments, the volume of the club head (100) can be less than about 200 cc, less than about 175 cc, less than about 150 cc, less than about 125 cc, less than about 100 cc, or less than about 75 cc. For example, the volume of the club head can be about 100 cc - 150 cc, about 75 cc - 150 cc, about 100 cc - 125 cc, or about 75 cc - 125 cc. In other embodiments, the golf club head (100) can include any type of golf club head.

A plurality of grooves or primary grooves (40) (as illustrated in FIG. 2) are positioned on the club face (38). The striking face (38) of the club head (100) may define a geometric center (140). In some embodiments, the geometric center (140) may be positioned at the geometric center point around the striking face and the midpoint of the face height. In the same or another example, the geometric center (140) may also be centered with respect to a designed impact area that may be defined by the groove areas on the striking face. As another approach, the geometric center of the striking face may be positioned according to the definitions of a golf governing body, such as the United States Golf Association (USGA). For example, the geometric center (140) of the striking face (38) may be determined according to Section 6.1 of the USGA's Procedure for Measuring The Flexibility of a Golf Club Head (USGA-TPX3004, Rev. 1.0.0, dated May 1, 2008) (http://www.usga.org/equipment/testing/ protocols/Procedure-For-Measuring-The-Flexibility-Of-A-Golf-Club-Head/) (“Flexibility Procedure”).

The club head (100) defines a loft plane (10102) that is tangent to the geometric center (140) of the striking face (38). The club head (100) additionally defines a coordinate system whose origin is located at the geometric center (140) of the striking face (38). The coordinate system has an x'-axis (10106), a y'-axis (10104), and a z'-axis (10108). The x'-axis (10106) extends through the geometric center (140) of the striking face (38) in a direction from the heel (22) to the toe (18) of the club head (100). The y'-axis (10104) extends through the geometric center (140) of the striking face (38) in a direction from the crown (26) to the sole (30) of the club head (100) and in a direction perpendicular to the x'-axis (10106). The z'-axis (10108) extends through the geometric center (140) of the striking face (38) in the direction from the face (38) of the club head (100) to the rear end (34) and is perpendicular to the x'-axis (10106) and the y'-axis (10104).

The coordinate system forms an x'y'-plane (10124) extending through the x'-axis (10106) and the y'-axis (10104); an x'z'-plane (10126) extending through the x'-axis (10106) and the z'-axis (10108); and a y'z'-plane (10128) extending through the y'-axis (10104) and the z'-axis (10108), wherein the x'y'-plane (10124), the x'z'-plane (10126) and the y'z'-plane (10128) are all perpendicular to each other and intersect at an origin of the coordinate system located at the geometric center (140) of the striking face (38). The x'y'-plane (10124) extends parallel to the hosel axis (46) and is positioned at an angle corresponding to the loft angle of the club head (100) from the loft plane (10102). Additionally, the x'-axis (10106) is positioned at a 60 degree angle with respect to the hosel axis (46) when viewed in a direction perpendicular to the x'y'-plane (10124).

In these or other embodiments, the club head (100) can be viewed in a front view (FIG. 2) when the striking face (38) is viewed in a direction perpendicular to the x'y'-plane (10124). Additionally, in these or other embodiments, the club head (100) can be viewed in a side view or side cross-section (FIG. 4) when the heel (22) is viewed in a direction perpendicular to the y'z'-plane (10128).

Referring to FIGS. 2 and 3, the golf club head (100) further includes a center of gravity or CG (50) (illustrated in FIGS. 3, 4 and 5) defining an origin of a coordinate system including an x-axis (54), a y-axis (58) and a z-axis (62). The y-axis (58) (illustrated in FIG. 2, 164) extends from the crown or top (26) to the sole or bottom (30) through the center of gravity (50) of the club head (100) and is parallel to the hosel axis (46) when viewed in a side view and is positioned at a 30 degree angle from the hosel axis (46) when viewed in a front view (FIG. 2). The x-axis (54) (illustrated in FIGS. 3 and 5) extends through the club head center of gravity (50) from the toe or toe end (18) to the heel or heel end (22) and is perpendicular to the y-axis (58) when viewed in a front view, and parallel to the x'y'-plane (10124). The z-axis (62) (illustrated in FIGS. 3-5) extends through the center of gravity (50) of the club head (100) from the club face (38) to the rear end (34) and is perpendicular to the x-axis (54) and the y-axis (58). The x-axis (54) extends through the head CG (50) from the toe or toe end (18) to the heel or heel end (22) and is parallel to the x'-axis (10106). The y-axis (58) extends through the head CG (50) from the crown or top (26) to the sole or bottom (30) parallel to the y'-axis (10104). The z-axis (62) extends through the head CG (50) from the club face (38) to the rear end (34) parallel to the z'-axis (10108).

As illustrated in FIG. 4, the club head (100) further includes a head depth plane (10120) and a head depth axis (10122), the head depth plane (10120) extending perpendicular to the loft plane (10102) from the heel (22) to the toe (18) of the club head (100) through the geometric center (140) of the striking face (38), and the head depth axis (10122) extending perpendicular to the loft plane (10102) through the geometric center (140) of the striking face (38). In many embodiments, the head CG (50) is located at a head CG depth (10130) from the x'y'-plane (10124) measured in a direction perpendicular to the x'y'-plane (10124). In some embodiments, the head CG (50) can be located at a head CG depth (10130) from the loft plane (10102) measured in a direction perpendicular to the loft plane (10102). The head CG (50) is also located at a head CG height (10132) from the head depth plane (10120) measured in a direction perpendicular to the head depth plane (10120). Additionally, the head CG height (10132) is measured as the distance the head CG (50) is deflected from the head depth plane (10120) in the direction from the crown (26) or sole (30).

For further guidance in illustrating the innovation of the present disclosure, the x-axis (54) and the z-axis (62) are arranged to correspond to the numbers on the analog watch of FIG. 3. The z-axis (62) extends between 12 o'clock ("12" through the club face (38)) and 6 o'clock ("6" through the rear (34)) and the x-axis (54) extends between 3 o'clock ("3" through the toe end (18)) and 9 o'clock ("9" through the heel end (22)).

Several golf club head parameters are important in achieving desired performance characteristics, such as club head moment of inertia, club head center of gravity location, and club head center of gravity adjustability. A higher club head moment of inertia increases the club head's tolerance for off-axis hits. A club head center of gravity positioned rearward and downward (i.e., toward the sole and rearward side of the club head) advantageously increases the moment of inertia, reduces backspin, and increases the launch angle of the golf ball at impact. Club head center of gravity adjustability allows the end user to adjust the desired trajectory of the club head. Each of these parameters is important in golf club design to achieve desired or optimal performance characteristics. However, incorporating all of these parameters into a golf club head presents a design challenge because many current center of gravity adjustment mechanisms have internal and/or bulky weight structures and/or suboptimal weight structure placements that provide (1) a reduction in the club head moment of inertia and/or (2) an upward shift of the club head center of gravity and/or a forward shift of the club head.

Embodiments of golf club heads described below include adjustable weighting systems that provide a significant reduction in club head moment of inertia and maintain or prevent a downward and rearward club head center of gravity location. For example, many of the embodiments below describe low-profile adjustable weighting systems and/or optimally positioned adjustable weighting systems that maintain a high club head moment of inertia and a downward and rearward club head center of gravity location, similar to a club head without the adjustable weighting system, while providing user adjustability for ball flight and/or trajectory. Maintaining a high club head moment of inertia about the club head CG increases tolerance for off-center hits, and a high club head moment of inertia about the hosel axis increases rotational stability during the swing. Additionally, maintaining a downward and rearward club head CG advantageously increases the club head moment of inertia about the head CG and reduces backspin.

The club head (100) has a moment of inertia (I _xx ) about the x-axis (i.e., crown-sole moment of inertia), a moment of inertia (I _yy ) about the y-axis (i.e., heel-toe moment of inertia), and a moment of inertia (I _hh ) about the hosel axis (46).

A club head including the adjustable weighting system described herein can have a moment of inertia (I xx ) about the x-axis greater than 3100 g·cm2, greater than 3200 g·cm2, greater than 3300 g·cm2, greater than 3400 g·cm2, greater than 3500 g·cm2, greater than 3600 g·cm2, greater than 3700 g·cm2, greater than 3800 g·cm2, greater than 3900 g·cm2, greater than 4000 g·cm2, greater than 4100 g·cm2, greater than 4200 g·cm2, greater than 4300 g·cm2, greater than 4400 g·cm2, or greater than 4500 g _· cm2. In some embodiments, a club head including the adjustable weighting system described herein can have a moment of inertia about the x-axis (I xx ) of 3100 - 4000 g cm2, 3100 - 3800 g cm2, 3200 - 4000 g cm2, 3200 - 4000 g cm2, 3300 - 4000 g cm2, 3400 - 4000 g _cm2 , or 3500 - 4000 g cm2.

Additionally, a club head including the adjustable weighting system described herein can have a moment of inertia about the y-axis (I yy ) of greater than 4700 g·cm2, greater than 4800 g·cm2, greater than 4900 g·cm2, greater than 5000 g·cm2, greater than 5100 g·cm2, greater than 5200 g·cm2, greater than 5300 g·cm2, greater than 5400 g·cm2, greater than 5500 g·cm2, greater than 5600 g·cm2, greater than 5700 g·cm2, greater than 5800 g·cm2, greater than 5900 g· _cm2 , or greater than 6000 g·cm2. In some embodiments, a club head including the adjustable weighting system described herein can have a moment of inertia about the y-axis (I yy ) of 4800 - 6000 g cm2, 4900 - 6000 g cm2, 5000 - 6000 g cm2, 5100 - 6000 g cm2, 5200 - 6000 g cm2, 5300 - 6000 g _cm2 , or 5400 - 6000 g cm2.

Additionally, a club head including the adjustable weighting system described herein can have a moment of inertia (I hh ) about the hosel axis of greater than 7500 g cm2, greater than 8000 g cm2, greater than 8250 g cm2, greater than 8500 g cm2, greater than 8750 g cm2, greater than 9000 g cm2, greater than 9500 g cm2, or greater than 10000 g cm2. In some embodiments, a club head including the adjustable weighting system described herein has _a moment of inertia (I _hh ) about the hosel axis of 7500 to 10000 g cm2, 8000 to 10000 g cm2, 8500 to 10000 g cm2, or 9000 to 10000 g cm2.

Referring to Relationship 1 below, many embodiments of club heads having an adjustable weighting system have a combined moment of inertia about the head CG (MOI _CG ) defined as the sum of the moment of inertia about the x-axis and the moment of inertia about the y-axis.

[Relationship 1]

MOI _CG = I _xx + I _yy

The combined moment of inertia about the head center of gravity (MOI _CG ) can be greater than 7600 g·cm2, greater than 7700 g·cm2, greater than 7800 g·cm2, greater than 7900 g·cm2, greater than 8000 g·cm2, greater than 8100 g·cm2, greater than 8200 g·cm2, greater than 8300 g·cm2, greater than 8400 g·cm2, greater than 8500 g·cm2, greater than 8600 g·cm2, greater than 8700 g·cm2, greater than 8800 g·cm2, greater than 8900 g·cm2, greater than 9000 g·cm2, greater than 9100 g·cm2, greater than 9200 g·cm2, or greater than 9300 g·cm2. For example, the combined moment of inertia about the head center of gravity (MOI _CG ) is 7700 - 9500 g cm2, 7800 - 9500 g cm2, 7900 - 9500 g cm2, 8000 - 9500 g cm2, 8100 - 9500 g cm2, 8200 - 9500 g cm2 or 8300 - 9500 g cm2. It could be.

Referring to Equation 2 below, many embodiments of club heads having an adjustable weighting system have a combined moment of inertia about the head CG and hosel (MOI _CG-H ) defined as the sum of the moment of inertia about the x-axis, the moment of inertia about the y-axis, and the moment of inertia about the hosel axis.

[Relationship 2]

MOI _CG-H = I _xx + I _yy + I _hh

The combined moment of inertia (MOI _CG-H ) for the head CG and hosel is greater than 14800 g㎠, greater than 14900 g㎠, greater than 15000 g㎠, greater than 15100 g㎠, greater than 15200 g㎠, greater than 15300 g㎠, greater than 15400 g㎠, greater than 15500 g㎠, greater than 15600 g㎠, greater than 15700 g㎠, greater than 15800 g㎠, greater than 15900 g㎠, greater than 16000 g㎠, greater than 16200 g㎠, greater than 16400 g㎠, greater than 16600 g㎠, greater than 16800 g㎠ Exceeding 17000 g·cm2, exceeding 17200 g·cm2, exceeding 17400 g·cm2, exceeding 17600 g·cm2, exceeding 17800 g·cm2, exceeding 18000 g·cm2, exceeding 18400 g·cm2, exceeding 18800 g·cm2, exceeding 19000 g·cm2, exceeding 19200 g·cm2, or exceeding 19400 g·cm2. For example, the combined moment of inertia (MOI _CG-H ) for the head CG and hosel is 15000 - 19500 g cm2, 15000 - 19000 g cm2, 15000 - 18000 g cm2, 16000 - 19500 g cm2, 16000 - 19000 g cm2, or 16000 - 18000 g cm2. may be. In these embodiments, the combined moment of inertia (MOI _CG-H ) for the head CG and hosel may be greater than 15000 g·cm2 for a club head having an adjustable weighting system having a volume of 425-450 cubic centimeters (cc), and the combined moment of inertia (MOI _CG-H ) for the head CG and hosel may be greater than 17000 g·cm2 for a club head having an adjustable weighting system having a volume of 450-500 cubic centimeters (cc).

A club head including the adjustable weighting system described herein can have a head CG depth (10130) greater than 1.6 inches, greater than 1.65 inches, greater than 1.7 inches, greater than 1.75 inches, greater than 1.8 inches, greater than 1.85 inches, greater than 1.9 inches, greater than 1.95 inches, or greater than 2.0 inches. For example, a club head having the adjustable weighting system can have a head CG depth (10130) of 1.61 to 2.0 inches, 1.65 to 2.0 inches, 1.7 to 2.0 inches, 1.8 to 2.0 inches, 1.61 to 3.0 inches, 1.65 to 3.0 inches, 1.7 to 3.0 inches, 1.8 to 3.0 inches, 1.9 to 3.0 inches, or 2.0 to 3.0 inches.

Additionally, a club head including the adjustable weighting system described herein can have a head CG height (10132) located below the head depth plane (10120) (i.e., located between the head depth plane (10120) and the sole (30) of the club head). Additionally, a club head including the adjustable weighting system described herein can have a head CG height (10132) located within 0.10 inches, within 0.09 inches, within 0.08 inches, within 0.07 inches, within 0.07 inches, within 0.06 inches, within 0.05 inches, or within 0.04 inches of the head depth plane (10120) toward the crown (26) or the sole (30) of the club head.

In many embodiments, the adjustable weighting system includes one or more weights that can be repositioned to a plurality of individual portions or attachment locations of the club head to adjust the head CG location. Adjusting the head CG location using the adjustable weighting system described herein can affect the ball trajectory and/or spin characteristics of the club head at impact while maintaining a high club head moment of inertia.

In many embodiments, the adjustable weighting system can include two or more individual attachment locations for accommodating one or more weights. In many embodiments, the adjustable weighting system includes two, three, four, or five individual attachment locations. For example, in an embodiment of an adjustable weighting system having two individual attachment locations, the attachment locations can include a first attachment location positioned toward the rear end (34) and the toe (18) and a second attachment location positioned toward the rear end (24) and the heel (22) of the club head. In these embodiments, the distance between the first attachment location and the second attachment location can be greater than 0.8 inches, greater than 0.9 inches, greater than 1.0 inches, greater than 1.1 inches, greater than 1.2 inches, or greater than 1.3 inches. For example, the distance between the first attachment location and the second attachment location can be 0.8 to 1.3 inches, 0.9 to 1.3 inches, 1.0 to 1.3 inches, or 1.1 to 1.3 inches.

In a further example, in an embodiment of an adjustable weighting system having three individual attachment locations (e.g., FIG. 5 ), the attachment locations may include a first attachment location (A) positioned toward the rear end (34) and the toe (18), a second attachment location (C) positioned toward the rear end (34) and the heel (22), and a third attachment location (B). In these embodiments, the third attachment location (B) may be positioned generally aligned with or adjacent the head depth axis (10122) toward the rear end (34) of the club head and/or between the first and second attachment locations (A, C). In these embodiments, the distance between adjacent attachment locations (e.g., the distance between the first attachment location (A) and the third attachment location (B), or the distance between the second attachment location (C) and the third attachment location (B)) can be greater than 0.5 inches, greater than 0.6 inches, greater than 0.7 inches, greater than 0.8 inches, greater than 0.9 inches, or greater than 1.0 inches. For example, the distance between adjacent attachment locations (e.g., the distance between the first attachment location (A) and the third attachment location (B), or the distance between the second attachment location (C) and the third attachment location (B)) can be 0.5 to 1.0 inches, 0.6 to 1.0 inches, 0.7 to 1.0 inches, or 0.8 to 1.0 inches.

In other embodiments, the adjustable weighting system can include any number of discrete attachment locations, such as two, three, four, five, six, seven, eight, or more discrete attachment locations. In embodiments where the adjustable weighting system includes four discrete attachment locations, the distance between adjacent attachment locations can be greater than 0.4 inches, greater than 0.5 inches, greater than 0.6 inches, greater than 0.7 inches, greater than 0.8 inches, or greater than 0.9 inches. For example, in embodiments where the adjustable weighting system includes four discrete attachment locations, the distance between adjacent attachment locations can be 0.4 to 0.9 inches, 0.5 to 0.9 inches, 0.6 to 0.9 inches, or 0.7 to 0.9 inches. In embodiments where the adjustable weighting system includes five individual attachment locations, the distance between adjacent attachment locations can be greater than 0.3 inches, greater than 0.4 inches, greater than 0.5 inches, greater than 0.6 inches, greater than 0.7 inches, or greater than 0.8 inches. For example, in embodiments where the adjustable weighting system includes four individual attachment locations, the distance between adjacent attachment locations can be 0.3 to 0.8 inches, 0.4 to 0.8 inches, 0.5 to 0.8 inches, or 0.6 to 0.8 inches.

The multiple individual attachment locations of a club head having the adjustable weighting system described herein can include a variety of features including a protruding body, opening, recess or port capable of receiving a fastener, a notch or tab or cutout area, a rib or groove, a peg, a hook, a magnet, a programmable magnet, or any other suitable attachment means. In many embodiments having an opening or recess or port capable of receiving a fastener, the fastener can comprise the same material as the body, or a material of a lighter density than the body, such that the fastener does not contribute to the adjustable weighting characteristics of the club head. Additionally, in some embodiments, the opening or recess or port can be threaded to receive a threaded fastener. In many embodiments, the adjustable weighting system does not have multiple and/or deep ports or recesses that require major internal structure to secure one or more weights within the ports or recesses.

The adjustable weighting system further includes one or more weights positionable at a plurality of individual attachment locations. The one or more weights can have a height (10152) measured in a crown-sole direction parallel to the y-axis (58) when the weight is engaged at the one or more attachment locations, a width (10154) measured in a heel-toe direction parallel to the x-axis (54) when the weight is engaged at the one or more attachment locations, and a depth (10156) measured in a forward-rear direction parallel to the z-axis (62) when the weight is engaged at the one or more attachment locations. In many embodiments, the height (10152) can be less than 0.5 inches, less than 0.4 inches, less than 0.3 inches, less than 0.25 inches, less than 0.2 inches, less than 0.18 inches, less than 0.16 inches, less than 0.14 inches, less than 0.12 inches, or less than 0.10 inches. In many embodiments, the width (10154) can be less than 1.3 inches, less than 1.2 inches, less than 1.1 inches, less than 1.0 inches, less than 0.9 inches, less than 0.8 inches, less than 0.7 inches, less than 0.6 inches, less than 0.5 inches, or less than 0.4 inches. In many embodiments, the depth (10156) can be less than 1.0 inches, less than 0.9 inches, less than 0.8 inches, less than 0.7 inches, less than 0.6 inches, less than 0.5 inches, less than 0.4 inches, less than 0.3 inches, less than 0.2 inches, or less than 0.1 inches. In many embodiments, one or more of the weights can have a surface area that contacts the club head body when the weight is engaged at any attachment location. In many embodiments, the surface area of the weight in contact with the club head can be less than 0.75 inch ² , less than 0.7 inch ² , less than 0.65 inch ² , less than 0.6 inch ² , less than 0.55 inch ² , less than 0.5 inch ² , less than 0.45 inch ² , less than 0.4 inch ² , less than 0.35 inch ² , less than 0.3 inch ² , or less than 0.25 inch ² .

In many embodiments, the adjustable weighting system includes a first weight (W) positionable at a plurality of individual attachment locations on the club head. In some embodiments, the adjustable weighting system may further include additional weights, such as a second weight, a third weight, a fourth weight, and a fifth weight positionable at a plurality of individual attachment locations on the club head. In these embodiments, each of the plurality of weights may be positioned at a different individual attachment location on the club head. Additionally, in these embodiments, each of the plurality of weights may be removed and then repositioned or repositioned at a different individual attachment location on the club head. While embodiments of the adjustable weighting system described herein include up to five weights, other embodiments may include an adjustable weighting system having any number of weights.

In many embodiments, the first weight is heavier than the remaining weights (e.g., the second weight, the third weight, the fourth weight, and/or the fifth weight). The first weight can have a mass of greater than 10 grams, greater than 12 grams, greater than 14 grams, greater than 16 grams, greater than 18 grams, greater than 20 grams, greater than 22 grams, greater than 24 grams, greater than 26 grams, greater than 28 grams, or greater than 30 grams. For example, the first weight can have a mass of 6 - 50 grams, 10 - 50 grams, 15 - 50 grams, 20 - 50 grams, 15 - 40 grams, 20 - 40 grams, 25 - 35 grams, 10 - 25 grams, 15 - 25 grams, 10 - 20 grams, or 15 - 20 grams. The remaining weights (e.g., the second weight, the third weight, the fourth weight, and/or the fifth weight) can have a mass of less than 20 grams, less than 18 grams, less than 16 grams, less than 14 grams, less than 12 grams, less than 10 grams, less than 8 grams, less than 6 grams, less than 4 grams, or less than 2 grams. For example, the remaining weights can have masses of 0.10 - 15 grams, 0.25 - 10 grams, 0.5 - 7 grams, or 1 - 10 grams.

The first weight may be positioned at any individual attachment location. In embodiments having an adjustable weighting system including two individual attachment locations, the first weight may be positioned at a first attachment location located near the toe (18) or a second attachment location located near the heel (22). In these embodiments, movement of the first weight from the first attachment location to the second attachment location moves the head CG toward the heel (22), and movement of the first weight from the second attachment location to the first attachment location moves the head CG toward the toe (18). In these embodiments, the remaining attachment locations may have no weights, or the remaining attachment locations may include additional weights (e.g., second weights).

In embodiments having an adjustable weighting system including three individual attachment locations, the first weight (W) can be positioned at a centrally located third attachment location (B) to form a neutral head CG position. The first weight can be moved from the third attachment location (B) to a first attachment location (A) positioned toward the toe (18) to move the head CG (50) a predetermined distance toward the toe (18). The first weight (W) can be moved from the third attachment location (B) to a second attachment location (C) positioned toward the heel (22) to move the head CG (50) a predetermined distance toward the heel (22). In these embodiments, the remaining locations may have no weights, or may include additional weights (e.g., a second weight and/or a third weight) at the remaining locations.

Moving the first weight (W) from the attachment location closest to the toe (18) to the attachment location closest to the heel (22) can move the head CG (50) in a direction parallel to the x-axis (54) a distance of at least 0.10 inches, at least 0.15 inches, at least 0.20 inches, at least 0.25 inches, or at least 0.30 inches. For example, in many embodiments, moving the first weight (W) from the attachment location closest to the toe (18) to the attachment location closest to the heel (22) can move the head CG (50) a distance of 0.10 to 0.30 inches, 0.15 to 0.30 inches, 0.20 to 0.30 inches, 0.15 to 0.25 inches, or 0.20 to 0.25 inches.

In these or other embodiments, moving the head CG (50) toward the toe (18) can produce a fade or correct for a hook. Conversely, moving the head CG (50) toward the heel (22) can produce a draw or correct for a slice. In embodiments of the adjustable weighting system described below, moving the head CG (50) 0.10 to 0.30 inches in a direction extending parallel to the x-axis (54) can produce a shot bend change of 4.6 to 13.9 yards.

Other embodiments may include one or more individual attachment locations positioned toward the striking face (38) of the club head (100). In these embodiments, moving one or more of the weights from an attachment location near the striking face (38) to an attachment location(s) near the rear end (34) of the club head (100) may increase the club head moment of inertia (MOI _CG ) relative to the head CG and increase the dynamic loft or launch angle of the golf ball. Conversely, moving one or more of the weights from an attachment location near the rear end (34) to an attachment location(s) near the striking face (38) of the club head (100) may decrease the dynamic loft or launch angle of the golf ball.

Embodiments of a club head having an adjustable weighting system described herein maximize head CG depth (10130) and club head moment of inertia (or minimize reductions in head CG depth (10130) and club head moment of inertia associated with introducing adjustability compared to a conventional non-adjustable club head). In many embodiments, the maximized head CG depth and club head moment of inertia are achieved by a relatively low mass first adjustable weight, thereby increasing the efficiency of the design to maintain club head performance characteristics (e.g., forgiveness, low backspin, high launch) while enabling user adjustability of ball spin and/or trajectory.

Referring to Equation 3 below, a club head having an adjustable weighting system has a depth-to-mass ratio of the mass of the first weight (W _m ) to the head CG depth (10130). In many embodiments, the depth-to-mass ratio of the club head can be greater than 0.060 inch/gram, greater than 0.070 inch/gram, greater than 0.080 inch/gram, greater than 0.090 inch/gram, greater than 0.100 inch/gram, greater than 0.110 inch/gram, greater than 0.120 inch/gram, or greater than 0.130 inch/gram. In some embodiments, the depth-to-mass ratio can be 0.070 - 0.13 inch/gram, 0.080 - 0.13 inch/gram, 0.090 - 0.13 inch/gram, 0.070 - 0.11 inch/gram, 0.080 - 0.11 inch/gram, or 0.090 - 0.11 inch/gram. In these embodiments, the mass of the first weight can be less than 25 grams, less than 24 grams, less than 23 grams, less than 22 grams, less than 20 grams, less than 19 grams, less than 18 grams, less than 17 grams, less than 16 grams, or less than 15 grams. In some embodiments, the mass of the first weight can be 10-20 grams, 12-20 grams, 14-20 grams, 16-20 grams, 10-18 grams, 12-18 grams, or 14-18 grams.

[Relationship 3]

Depth to mass ratio = Head CG depth/W _m

Referring to Equation 4 below, a club head having an adjustable weighting system can have a first inertia-mass ratio defined as the combined moment of inertia about the head CG (MOI _CG ) to the mass of the first weight (W _m ). In many embodiments, the first inertia-mass ratio can be greater than 400 cm2, greater than 410 cm2, greater than 420 cm2, greater than 430 cm2, greater than 440 cm2, greater than 450 cm2, greater than 460 cm2, greater than 470 cm2, greater than 480 cm2, greater than 490 cm2, greater than 500 cm2, greater than 510 cm2, greater than 520 cm2, greater than 530 cm2, greater than 540 cm2, or greater than 550 cm2. In some embodiments, the first inertia-mass ratio is 400 - 550 cm2, 410 - 550 cm2, 420 - 550 cm2, 430 - 550 cm2, 440 - 550 cm2, 450 - 550 cm2, 400 - 500 cm2, 410 - 500 cm2, 420 - 500 cm2, 430 - 500 cm2, 440 - 500 cm2 or 450 - 500 cm2 may be. In these embodiments, the mass of the first weight may be less than 25 grams, less than 24 grams, less than 23 grams, less than 22 grams, less than 20 grams, less than 19 grams, less than 18 grams, less than 17 grams, less than 16 grams, or less than 15 grams. In some embodiments, the mass of the first weight may be 10-20 grams, 12-20 grams, 14-20 grams, 16-20 grams, 10-18 grams, 12-18 grams, or 14-18 grams.

[Relationship 4]

1st inertia-to-mass ratio = MOI _CG /W _m

Embodiments of a club head having an adjustable weighting system described herein maximize the total movement of the head CG as achieved by adjusting one or more weights to a plurality of individual attachment locations. In many embodiments, the maximized total movement of the head CG is achieved by a first adjustable weight of relatively low mass, thereby increasing the efficiency of the design to maintain club head performance characteristics (e.g., forgiveness, low backspin, high launch) while allowing user adjustability of ball spin and/or trajectory.

Referring to Equation 5 below, a club head having an adjustable weighting system has a head CG-to-mass ratio defined as the total head CG movement or maximum head CG movement to the mass of the first weight. In many embodiments, the head CG-to-mass ratio can be greater than 0.008 inch/gram, greater than 0.009 inch/gram, greater than 0.010 inch/gram, greater than 0.011 inch/gram, greater than 0.012 inch/gram, greater than 0.013 inch/gram, greater than 0.014 inch/gram, or greater than 0.015 inch/gram. In some embodiments, the head CG-mass ratio can be 0.008 - 0.015 inch/gram, 0.009 - 0.015 inch/gram, 0.010 - 0.015 inch/gram, 0.008 - 0.013 inch/gram, 0.009 - 0.013 inch/gram, or 0.010 - 0.013 inch/gram. In these embodiments, the mass of the first weight can be less than 25 grams, less than 24 grams, less than 23 grams, less than 22 grams, less than 20 grams, less than 19 grams, less than 18 grams, less than 17 grams, less than 16 grams, or less than 15 grams. In some embodiments, the mass of the first weight can be 10-20 grams, 12-20 grams, 14-20 grams, 16-20 grams, 10-18 grams, 12-18 grams, or 14-18 grams.

[Relationship 5]

Head CG-Mass Ratio = Maximum Head CG Movement/W _m

One or more weights of the adjustable weighting system have a weight CG (10134). In many embodiments, the weight CG is positioned a maximum distance (10138) from the geometric center (140) of the striking face (38) near the rear perimeter or skirt (10136) of the club head when viewed in a top or bottom view (FIG. 5). Positioning the weight CG (10134) near the rear perimeter (10136) of the club head (100) or away from the striking face (38) can increase the perimeter weighting and club head moment of inertia, thereby increasing the club head forgiveness for off-axis hits compared to an adjustable weight positioned closer to the striking face. Additionally, positioning the weight CG (10134) closer to the rear perimeter (10136) or further from the striking face (38) can result in a lower and further rearward head CG location, which can increase club head moment of inertia and reduce backspin compared to an adjustable weight positioned closer to the striking face.

In these embodiments, the weight CG (10134) of one or more weights is positioned a predetermined distance (10142) from the rear perimeter (10136) of the club head (100) when the weight is positioned at one or more of the plurality of individual attachment locations on the club head (100). The distance (10142) can be measured as the distance projected from the weight CG to the perimeter (10136) when the club head is viewed in a bottom view perpendicular to the x'z'-plane (10126) when the weight is positioned at one or more of the individual attachment locations on the club head (100). Additionally, the distance (10142) can be measured in a direction parallel to the x'z'-plane (10126) when the weight is positioned at one or more of the individual attachment locations on the club head (100). For example, the weight CG (10134) of one or more weights can be located within 0.7 inches, within 0.65 inches, within 0.6 inches, within 0.55 inches, within 0.5 inches, within 0.45 inches, within 0.4 inches, within 0.35 inches, within 0.3 inches, within 0.25 inches, or within 0.2 inches of the rear circumference (10136) of the club head (100). Additionally, as examples, the weight CG (10134) of one or more weights can be located 0.10 to 0.50 inches, 0.25 to 0.5 inches, 0.10 to 0.25 inches, 0.10 to 0.35 inches, or 0.10 to 0.45 inches from the rear circumference (10136) of the club head (100).

Additionally, in these embodiments, the weight CG (10134) of one or more weights is positioned a predetermined distance (10138) from the geometric center (140) of the striking face (38) of the club head (100) when the weights are positioned at one or more individual attachment locations of the club head (100). For example, the weight CG (10134) of one or more weights may be positioned a distance (10138) greater than 2.0 inches, greater than 2.25 inches, greater than 2.5 inches, greater than 2.75 inches, greater than 3.0 inches, greater than 3.25 inches, greater than 3.5 inches, or greater than 3.75 inches from the geometric center of the striking face. As a further example, the weight CG (10134) of one or more weights can be positioned a distance (10138) of 2.0 to 3.5 inches, 2.5 to 3.5 inches, 2.0 to 3.0 inches, 2.5 to 3.0 inches, 2.5 to 4.0 inches, 3.0 to 3.75 inches, 3.0 to 4.0 inches, 3.2 to 4.0 inches, or 3.5 to 4.0 inches from the geometric center (140) of the striking face (38). Positioning the weight CG (10134) further from the geometric center (140) of the striking face (38) can increase the perimeter weighting and club head moment of inertia, which can increase club head forgiveness for off-axis hits compared to adjustable weights positioned closer to the striking face. Additionally, positioning the weight CG (10134) further away from the geometric center (140) of the striking face (38) allows for a lower and further head CG location, which can increase club head moment of inertia and reduce backspin compared to an adjustable weight positioned closer to the striking face.

In many embodiments, the weight CG (10134) protrudes from the outer contour or outer surface (10146) of the sole (30), is positioned flush with the outer contour (10146) of the sole (30), and/or is positioned so as to be minimally inset relative to the outer contour (10146) of the sole (30). Positioning the weight CG (10134) so as to be minimally inset, flush with, or external to the outer contour (10146) of the sole (30) requires less structural support material to accommodate one or more weights, thereby maintaining a low profile adjustable weighting system. Accordingly, positioning the weight CG (10134) at a minimum insertion, flush with, or externally relative to the outer contour (10146) of the sole (30) can increase the circumferential weighting and the club head moment of inertia, thereby increasing the club head tolerance for off-axis hits compared to an internal adjustable weight or an adjustable weight that is recessed into the club head. In addition, positioning the weight CG (10134) at a minimum insertion, flush with, or externally relative to the outer contour (10146) of the sole (30) can cause the head CG location to be lower and more rearward, thereby increasing the club head moment of inertia and reducing backspin compared to an internal adjustable weight or an adjustable weight that is recessed into the club head.

In these embodiments, the weight CG (10134) of one or more weights is positioned a predetermined distance (10148) from the outer contour (10146) of the sole (30) when the weight is positioned at one or more of the plurality of individual attachment locations on the club head (100), wherein the distance (10148) is measured in a direction parallel to the y-axis (58). For example, the weight CG (10134) of one or more weights may protrude from the outer contour (10146) of the sole by at most 0.10 inches, at most 0.15 inches, at most 0.20 inches, at most 0.25 inches, or at most 0.30 inches. In some embodiments, the weight CG (10134) of one or more weights protrudes from the outer contour (10146) of the sole (30) by 0.10 to 0.25 inches, 0.15 to 0.25 inches, 0.15 to 0.25 inches, or 0.15 to 0.30 inches. As additional examples, the weight CG (10134) can be inserted a distance (10148) less than 0.15 inches, less than 0.14 inches, less than 0.13 inches, less than 0.125 inches, less than 0.12 inches, less than 0.11 inches, less than 0.10 inches, less than 0.09 inches, less than 0.08 inches, or less than 0.07 inches relative to the outer contour (10146) of the sole (30). In some embodiments, the weight CG (10134) of one or more weights is inserted a distance (10148) of 0.05 to 0.15 inches, 0.05 to 0.125 inches, 0.05 to 0.15 inches, 0.10 to 0.15 inches, 0.10 to 0.125 inches, or 0.10 to 0.15 inches relative to the outer contour (10148) of the sole (30).

Figures 6 and 7 illustrate a club head (11010) similar to the club head (100) described above. The club head (11010) having a club head body (11014) includes an adjustable weighting system (11066) positioned on the sole (11030) that can be adjusted by the end user to modify the center of gravity and/or moment of inertia and/or heel/toe bias of the club head (11010) to achieve desired performance characteristics (e.g., tolerance, spin, trajectory) in various situations. The club head (11010) may be similar in many respects to the club head (100), and similar or identical numbers represent similar or identical components. The adjustable weighting system (11066) is a low profile system and thus does not significantly shift or change the MOI of the club head (11010) compared to a club head without the adjustable weighting system (11066). Additionally, the low profile adjustable weighting system (11066) ensures that the movement of the club head (11010) CG occurs primarily from the heel end (11022) to the toe end (11018), thereby maintaining the overall CG of the club head (11010) in a rearward and downward position. The center of gravity location and MOI of the club head (11010) may be similar to or identical to the center of gravity location and MOI of the club head (100) described above.

Referring to FIGS. 6 and 7, the adjustable weighting system (11066) can include a recess (11080). The recess (11080) includes a recessed surface (11081) configured to include a plurality of individual attachment locations. The plurality of individual attachment locations can include various features including protruding bodies, openings, recesses or ports capable of receiving fasteners, notches or tabs or cutout areas, ribs or grooves, pegs, hooks, magnets, programmable magnets, or any other suitable attachment means. In the illustrated embodiment, the adjustable weighting system (11066) includes a recessed surface (11081) including three individual attachment locations (11070A, 11070B, and 11070C). The three individual attachment locations include features (11070A, 11070B, and 11070C). The features (11070A, 11070B and 11070C) can include any of the features discussed above. The attachment locations and corresponding features (11070A, 11070B and 11070C) are configured to accommodate one or more weights (11082).

Referring to FIGS. 6 and 7, the recess (11080) extends along the sole or bottom (11030) of the club head (11010) adjacent the trailing edge (11072) or rear perimeter (10136) and forms a groove, channel and/or recessed track extending generally in an arcuate configuration from the toe or toe end (11018) to the heel or heel end (11020). The recess (11080) generally follows the contour of the trailing edge (11072), wherein the recess (11080) may be slightly offset from the trailing edge (11072) or rear perimeter (10136) between the heel end (11022) and the toe end (11018). The concave portion (11080) includes a concave surface (11081) that is offset from the sole (11030) of the club head (11010) by a first wall (11083). A portion of the concave surface (11081) may be further offset from the sole (11030) by a second wall (11084), wherein the second wall (11084) opposes the first wall (11083) proximate the trailing edge (11072) or rear perimeter (10136). In general, the concave surface (11081) extends substantially parallel to the sole (11030) of the club head (11010), while the first and second walls (11083, 11084) extend substantially perpendicular to the concave surface (11081) and/or the sole (11030). In another embodiment, the first wall (11083) and the second wall (11084) may extend at a non-perpendicular angle between the concave surface (11081) and the sole (11030).

The recess (11081) has a depth measured as a distance from the recess (11081) to the sole (11030) in a direction parallel to the recess (11081). In an illustrated embodiment, the recess (11080) has a variable depth such that it is deeper in some areas than in others (e.g., may have a depth that varies continuously or intermittently). For example, in some embodiments, the recess (11080) may have an increasing, decreasing, and/or constant depth along its length from the toe end (11018) to the heel end (11022). Thus, when the weight (11082) is engaged to the club head (11010) in one area of the recess (11080), the weight (11082) may be hidden by the wall (11083) and may be flush with the sole (11030). When the weight (11082) is coupled to the club head (11010) at different regions of the recess (11080), the weight (11082) may partially protrude outwardly from the wall (11083). As illustrated in FIGS. 6-8, the recess (11080) includes a first region (11077) at the toe end (11018) of the club head (11010), a second region (11076) at the heel end (11022) of the club head (11010), and a third region (11078) between the heel end (11022) and the toe end (11018) along or near the rear end (11034). Referring to FIG. 6, the depth in the first region (11077) of the recess (11080) (and similarly the depth in the second region (11076)) is smaller than the depth in the third region. Accordingly, the depth of the recess (11080) increases from the first and second regions (11077, 11076) toward the third region (11078), so that the third region (11078) has a constant depth that is larger than the first and second regions (11077, 11076). In this exemplary embodiment, the weight (11082) may be obscured by the first wall (11083) when the weight (11082) is coupled to the third region (11078) (e.g., when viewed along the y-axis (58) in FIG. 2), and the weight (11082) may be at least partially exposed or at least partially protruding from the outline of the sole (11030) in the first and second regions (11077, 11076). In another embodiment, the first region (11077), the second region (11076), and the third region (11078) may have a constant depth, and thus, the weight (11072) is obscured by the wall (11083) when the weight (11082) is coupled to any one of the first, second, and/or third regions (11077, 11076, 11078). In other embodiments, the recess (11080) includes regions of a different number and location than those illustrated. For example, in some embodiments, the recess (11080) may include two or more regions that are hidden when the weight (11082) is combined. For example, the recess (11080) may include one region, two regions, three regions, four regions, five regions, six regions, seven regions, or eight regions.

In many embodiments, the recess (11080) has a shallow depth so that the adjustable weighting system (11066) maintains a low profile. For example, in some embodiments, the recess (11080) has a maximum depth of 0.25 inches. In other embodiments, the recess (11080) can have a maximum depth of 1.5, 1.25, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, or 0.1 inches. In other embodiments, the depth of the recess (11080) can vary within the range of 0.05 - 0.25, 0.1 - 0.4, 0.1 - 0.6, 0.1 - 0.8, 0.2 - 0.4, 0.2 - 0.6, 0.2 - 0.8, 0.3 - 0.7, 0.3 - 0.9, 0.4 - 0.8, 0.4 - 1.2, 0.5 - 1.0, 0.5 - 1.5 or 1.0 - 1.5 inches. Additionally, the recess (11080) includes a width measured as the distance between the first wall (11083) and the trailing edge (11072) or the second wall (11084). In the illustrated embodiment, the recess (11080) has a variable width. In some embodiments, the first region (11077) has a width that increases from the toe end (11018) toward the center or third region (11078), the second region (11076) has a width that increases from the heel end (11022) toward the center and/or third region (11078), and the third region (11078) has a constant width that is less than an average width of the first and/or second regions (11077, 11076). As illustrated in FIGS. 6-8 , the width of the recess (11080) can increase from the center or third region (11078) toward the first region (11077) and the second region (11076). In other embodiments, the recess (11080) can have an increasing, decreasing, and/or constant width. In many embodiments, the width can be less than 2.0 inches. For example, in some embodiments, the width can be less than 2.0, 1.75, 1.5, 1.25, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, or 0.2 inches. In other embodiments, the width can vary from 0.1 to 0.5, 0.3 to 0.7, 0.5 to 0.9, 0.7 to 1.1, 0.9 to 1.3, 1.1 to 1.5, 1.3 to 1.7, or 1.5 to 2.0 inches.

Referring again to FIGS. 6 and 7, the recess (11080) may include one or more features (11070) forming one or more individual attachment locations for securing the weight (11082) to the club head (11010). A club head (11010) having one or more individual attachment locations differs from other adjustable weighting systems in that the weights may be attached at any, multiple or an unlimited number of locations on the club head. Referring again to FIGS. 6 and 7, in the illustrated embodiment, the recess (11080) may include three features or attachment locations (11070A, 11070B, 11070C). The features (11070A, 11070B, 11070C) are illustrated as openings configured to receive screw fasteners (11085). The screw fastener (11085) may be constructed of a material having a density equal to or less than the density of the club head (11010). In other embodiments, the features (11070A, 11070B, 11070C) may be protruding bodies, openings, recesses or ports capable of receiving a fastener, a notch or tab or a cutout area, a rib or groove, a peg, a hook, a magnet, a programmable magnet, or any other suitable attachment means. In other embodiments, the recess (11080) may include one, two, three, four, five, six, seven, eight, nine or ten features (11070).

As illustrated, features (11070A, 11070B, 11070C) are positioned within the recess (11080) along the recess (11081) such that one or more weights (11082) can be releasably or removably engaged to the club head (11010) along the recess (11080). More specifically, the first feature (11070A) is positioned along a first region (11077) of the recess (11080) near the toe end (11018), the second feature (11070C) is positioned along a second region (11076) of the recess near the heel end (11022), and the third feature (11070B) is positioned along a third region (11078) of the recess (11080) between the toe end (11018) and the heel end (11022). In some embodiments, one or more of the features (11070A, 11070B, 11070C) may be positioned on the first wall (11083), the second wall (11084), and/or the concave surface (11081) of the recess (11080).

Referring still to FIGS. 6-8, the weight (11082) can have a generally trapezoidal shape. In other embodiments, the weight (11082) can have a circular, oval, triangular, trapezoidal, polygonal, or any other suitable shape configured to fit within the recess (11080). In the illustrated embodiment, the adjustable weighting system (11066) includes a single weight (11082) that can be removably coupled to a feature (11070A, 11070B, 11070C). In other embodiments, the adjustable weighting system (11066) can include any number of weights (11082) corresponding to multiple features (11070A, 11070B, 11070C). In other embodiments, the adjustable weighting system (11066) can include more or fewer weights (11082) than the features (11070A, 11070B, 11070C). For example, the adjustable weighting system (11066) can include 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 weights (11082).

In an illustrated embodiment, the weight (11082) includes an opening extending completely through the weight (11082) that is sized and configured to receive a threaded fastener or screw fastener (11085). The screw fastener (11085) can be threaded into a corresponding feature (11070A) through the weight (11082) to secure the weight (11082) to the recess (11080). In some embodiments, the weight (11082) can include a recessed insert for receiving an upper portion of the screw fastener (11085), such that the screw fastener (11085) can be flush with the exterior of the weight (11082). In other embodiments, the weight (11082) may be configured to be coupled to the feature (11070A, 11070B, 11070C) via a friction fit, a snap-fit mechanism, a set-screw, or any other suitable structure.

In embodiments where the adjustable weighting system (11066) includes two or more weights (11082), each of the weights (11082) can have the same shape and size. In other embodiments, the weights (11082) can have different shapes and sizes, such that the weights (11082) can have different masses. Additionally, in some embodiments, the weights (11082) can include different materials to vary the masses. For example, one weight (11082) can include a high-density material, such as tungsten, and the other weights (11082) can include a lower-density material, such as polyurethane or other plastic. In other embodiments, the weights (11082) can include the same or different materials and can have different sizes or volumes to vary the masses. For example, one weight (11082) can have a larger volume than the other weights (11082). In some embodiments, each of the weights (11082) can have a different volume, and therefore a different mass. In some embodiments, the weights (11082) can have different volumes and different materials. In some embodiments, one of the structures indicated by 11082 is not a weight, but rather a lightweight (e.g., lightweight plastic) cover that snaps-fit or otherwise attaches to one of the features (11070A, 11070B, 11070C).

In some embodiments, the weights (11082) can vary from 0.1 - 50 grams. For example, in embodiments having multiple weights (11082), one or more of the weights (11082) can vary from 0 - 10 grams, one or more of the weights (11082) can vary from 10 - 20 grams, one or more of the weights (11082) can vary from 20 - 30 grams, one or more of the weights (11082) can vary from 30 - 40 grams, and one or more of the weights (11082) can vary from 40 - 50 grams. In some embodiments, the first weight (11082) can vary from 0 - 10 grams, the second weight (11082) can vary from 10 - 20 grams, and the third weight (11082) can vary from 20 - 30 grams. In other embodiments, the first weight (11082) can vary from 1 - 5 grams, and the second and third weights (11082) can vary from 5 - 30 grams. In other embodiments, the first weight (11082) can vary from 40 - 50 grams, the second weight (11082) can vary from 30 - 40 grams, and the third weight can vary from 20 - 30 grams. In other embodiments, the first and second weights (11082) can vary from 1 - 10 grams, and the third weight (11082) can vary from 5 - 25 grams. In some embodiments, the first weight (11082) has a mass of 8.5 grams, and the second and third weights (11082) each have a mass of 1.5 grams. In other embodiments, the first weight (11082) has a mass of 12 grams, and the second and third weights (11082) each have a mass of 1.5 grams. In other embodiments, the first weight (11082) has a mass of 8.5 grams, and the second and third weights (11082) each have a mass of 0.75 grams. In other embodiments, the first weight can have a mass of 10-20 grams, 10-25 grams, or 15-25 grams, and the remaining weights (e.g., the second, third, fourth, and fifth weights) can have masses of 0.25-2.5 grams, 0.25-5 grams, 0.25-7.5 grams, or 0.25-10 grams. In other embodiments, the first weight can have a mass of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 grams, and the remaining weights can have masses of 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 grams. In other embodiments, any number of the weights can have the same mass or can have variable masses from 0.1 to 50 grams.

Continuing with reference to FIG. 6, in the illustrated embodiment, one of the features (11070A, 11070B, 11070C) can accommodate a weight (11082), while the remaining features (11070A, 11070B, 11070C) can be exposed, free of weight, or covered with another material or structure. In another embodiment illustrated in FIG. 7, each of the features (11070A, 11070B, 11070C) can accommodate a weight (11082). In some embodiments, more than one of the features (11070A, 11070B, 11070C) can accommodate a weight (11082). In some embodiments, one or more of the features (11070A, 11070B, 11070C) do not extend beyond the outer profile of the club head (11010), such that even if the features (11070A, 11070B, 11070C) are left exposed, the features (11070A, 11070B, 11070C) and/or the recess (11080) will not interfere with or disrupt the golfer's swing.

The weights (11082) may be strategically placed on the features (11070A, 11070B, 11070C) to achieve a desired club head (11010) center of gravity location and/or moment of inertia and/or heel/toe bias. For example, in some embodiments, a heavier weight (11082) is positioned on the feature (11070B) located between the toe end (11018) and the heel end (11022), while a lighter weight is positioned on the features (11070A, 11070C) at the toe end (11018) and the heel end (11022). The aforementioned weight (11082) positions ensure that the center of gravity remains centered while moving toward the rear end (11034) of the club head (11010). In some embodiments, a heavier weight (11082) may be positioned on feature (11070C) at the heel end (11022), and a lighter weight (11082) may be positioned on feature (11070A, 11070B) near the toe end (11018) and centered between the toe end (6318) and the heel end (6322). The aforementioned weight (11082) positions cause the center of gravity to move toward the heel end (11022) of the club head (11010). In some embodiments, a heavier weight (11082) is positioned on a feature (11070A) at the toe or toe end (11018), while a lighter weight (11082) is positioned on a feature (11070C) at the heel end (11022) and a feature (11070B) positioned between the toe end (11018) and the heel end (11022). The aforementioned weight (11082) positions cause the center of gravity to move toward the toe end (11018) of the club head (11010). In many embodiments, one or more of the features (11070A, 11070B, 11070C) can have the same size and shape, such that a single weight can be used interchangeably for each of the features (11070A, 11070B, 11070C). In some embodiments, one or more of the features (11070A, 11070B, 11070C) may have varying sizes and shapes, such that each feature (11070A, 11070B, 11070C) may have its own corresponding weight (11082) or set of weights (11082). Additionally, positioning of the weights (11082) on the features (11070A, 11070B, 11070C) may also affect the spin imparted to the ball after impact.

Referring to FIG. 8, in some embodiments, the club head (11010) may further include a shaped recess (11031) positioned on the sole (11030). The shaped recess (11031) may have a greater height (i.e., smaller depth) than the recess (11080) having the plurality of individual attachment locations. The shaped recess (11031) extends from the recess (11080) toward the striking face (38) of the golf club head (11010).

An adjustable weighting system (11066) of a golf club head (11010) provides a significant reduction in club head moment of inertia and maintains or prevents a rearward or downward club head CG location compared to a club head without the adjustable weighting system. The adjustable weighting system (11066) of a golf club head (11010) maintains a high club head moment of inertia and a rearward or downward club head CG location due to the low profile of the weighting system and the peripheral placement of the one or more weights. A club head (11010) having the adjustable weighting system (11066) can have similar or identical parameters and measurements as the club head (100) described above.

FIGS. 9 and 10 illustrate a club head (12010) similar to the club head (100) described above. The club head (12010) having a club head body (12014) includes an adjustable weighting system (12066) that can be adjusted by the end user to modify the center of gravity and/or moment of inertia and/or heel/toe bias of the club head (12010) to achieve desired performance characteristics (e.g., tolerance, spin, trajectory) in various situations. The club head (12010) may be similar in many respects to the club heads (100, 11010), and similar or identical numbers represent similar or identical components. The adjustable weighting system (12066) is a low profile system and thus does not significantly shift or change the MOI of the club head (12010) compared to a club head without the adjustable weighting system (12066). Additionally, the low profile adjustable weighting system (12066) ensures that the movement of the club head (12010) CG occurs primarily from the heel end (12022) to the toe end (12018), thereby maintaining the overall CG of the club head (12010) in a rearward and downward position. The center of gravity location and MOI of the club head (12010) may be similar to or identical to the center of gravity locations and MOI of the club heads (100, 11010) described above.

Referring to FIGS. 9 and 10, the adjustable weighting system (12066) can include a channel or recess (12013) located on the sole (12030) or on the trailing edge (12072) of the club head (12010). The recess (12013) can include a plurality of individual attachment locations. The plurality of individual attachment locations can include various features including a protruding body, an opening, a recess, or a port capable of receiving a fastener, a notch or tab or a cutout area, a rib or groove, a peg, a hook, a magnet, a programmable magnet, or any other suitable attachment means. In the illustrated embodiment, the adjustable weighting system (12066) includes three individual attachment locations (12070A, 12070B, and 12070C). The three individual attachment locations include features (12070A, 12070B and 12070C). The features (12070A, 12070B and 12070C) can include any of the features discussed above. The attachment locations and corresponding features (12070A, 12070B and 12070C) are configured to accommodate one or more weights (12082).

In some embodiments, the recess (12080) forms a groove, channel and/or recessed track extending along within the skirt or trailing edge (12072) or the rear perimeter (10136) and extending generally in an arcuate configuration from the toe or toe end (12018) to the heel or heel end (12020). The channel (12013) is formed by a first surface (12073) ( FIG. 9 ), a second surface (12074) ( FIGS. 9 and 10 ) opposite the first surface (12073), and a third surface (12075) ( FIGS. 9 and 10 ) extending perpendicularly between the first surface (12073) and the second surface (12074). In many embodiments, the first surface (12073) comprises an upper wall of the channel (12013), the second surface (12074) comprises a lower wall of the channel (12013), and the third surface (12075) comprises a base or bottom of the channel (12013). In some embodiments, the first surface (12073) extends parallel to the second surface (12074) and perpendicular to the third surface (12075). Additionally, in some embodiments, the first and second surfaces (12073, 12074) of the recess (12080) extend in a direction generally perpendicular to a loft plane of the club head (12010), and the third surface (12075) of the recess (12080) extends in a direction generally parallel to the loft plane of the club head (12010). The channel (12013) is further partially formed by an additional end face (12079) that directly intersects the first surface (12073), the second surface (12074), and the third surface (12075). The end face (12079) may provide additional support and/or provide a contact area or edge upon which the weight (12082) rests. In some embodiments, the end face (12079) may also cause the weight (12082) to appear flush with the outer surface (12090) of the club head. The flush face may improve the aerodynamics of the club head (12010) by improving airflow characteristics during a swing.

The channel (12013) has a depth measured from the third surface (12075) to the sole (12030) in a direction perpendicular to the third surface (12075). In an illustrated embodiment, the channel (12013) can have a variable depth such that it is deeper in some areas than in other areas (e.g., can have a depth that varies continuously or intermittently). In other embodiments, the depth of the channel (12013) can have an increasing, decreasing, and/or constant depth along its length from the toe end (12018) to the heel end (12022). Thus, when the weight (12082) is coupled to the club head (12010) in one region of the channel (12013), the weight (12082) may be coupled flush with the channel (12013) and/or may be concealed by the first and/or second surfaces (12073, 12074). When the weight (12082) is coupled to the club head (12010) in different regions of the channel (12013), the weight (12082) may protrude a portion beyond the first and/or second surfaces (12073, 12074). In other embodiments, the weight (12082) may be recessed within the channel (12013), be flush with the channel (12013), or protrude beyond the channel (12013) at any location.

As illustrated in FIG. 9, the channel (12013) includes a first region (12077) at the toe end (12018) of the club head (12010), a second region (12076) at the heel end (12022) of the club head (12010), and a third region (12078) between the heel or heel end (12022) and the toe or toe end (12018) along the rear end (12034). In some embodiments, the first region (12077), the second region (12076), and the third region (12078) can be parallel to the contour of the trailing edge (12072). In other embodiments, any of the first, second and/or third regions (12077, 12076 and/or 12078) can be parallel and/or angled relative to the contour of the trailing edge (12072). In an example as illustrated in FIG. 9, the first region (12077) and the second region (12076) can angle upwardly toward the trailing edge (12072) extending toward the third region (12078), while the third region is parallel to the contour of the trailing edge (12072). In this embodiment, the transition between the first region (12077), the third region (12078) and the second region (12076) can be gradual and without abrupt edges.

In some embodiments, the first region (12077) of the channel (12013) (and similarly the second region (12076)) may have a shallow depth such that when the weight (12082) is coupled to the first region (12077), a portion of the weight may protrude beyond the first surface (12073) and the second surface (12074). However, because of the end face (12079), the weight (12082) may appear flush with the remainder of the sole (12030), toe end (12018), or heel end (12022) of the club head (12010). In this regard, the third region (12078) may have a greater depth, such that the weight (12082) is obscured by the first surface (12073) and the second surface (12074) when the weight (12082) is coupled to the third region (12078) (e.g., when viewed along the y-axis (58) of FIG. 2). In other embodiments, the depths of the first, second and third regions (12077, 12076 and 12078) may have the same depth. Additionally, the transition region between the first and third regions (12077, 1278) and the second and third regions (12076, 12078) may be shallower than the depths of the first, second and third regions (12077, 12076 and 12078). In other embodiments, the channel (12013) may include a different number and location of regions than those illustrated. For example, in some embodiments, the channel (12013) may include two or more regions where the weight (12082) is hidden when engaged. In some embodiments, the channel (12013) may include a region or regions at the heel end (12022) and/or the toe end (12018) where the weight (12082) is hidden when engaged. In some embodiments, the channel (12013) may include a region or regions at the rear end (12034) where a portion of the weight (12082) protrudes beyond the first surface (12073) and/or the second surface (12074) when engaged.

In many embodiments, the channel (12013) has a shallow depth so that the adjustable weighting system (12066) maintains a low profile. For example, in some embodiments, the channel (12013) has a maximum depth of 0.25 inches. In other embodiments, the channel (12013) can have a maximum depth of 1.5, 1.25, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, or 0.1 inches. In other embodiments, the depth of the channel (12013) can vary within the range of 0.05 - 0.25, 0.1 - 0.4, 0.1 - 0.6, 0.1 - 0.8, 0.2 - 0.4, 0.2 - 0.6, 0.2 - 0.8, 0.3 - 0.7, 0.3 - 0.9, 0.4 - 0.8, 0.4 - 1.2, 0.5 - 1.0, 0.5 - 1.5 or 1.0 - 1.5 inches. Additionally, the channel (12013) has a width measured as the distance between the first surface (12073) and the second surface (12074). In the illustrated embodiment, the channel (12013) has a constant width. In other embodiments, the channel (12013) can have increasing, decreasing, and/or constant widths. In many embodiments, the width can be less than 2.0 inches. For example, in some embodiments, the width can be less than 2.0, 1.75, 1.5, 1.25, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, or 0.2 inches. In other embodiments, the width can vary from 0.1 to 2.0, 0.1 to 0.5, 0.3 to 0.7, 0.5 to 0.9, 0.7 to 1.1, 0.9 to 1.3, 1.1 to 1.5, 1.3 to 1.7, or 1.5 to 2.0 inches.

Referring again to FIGS. 9 and 10 , the channel (12013) may include one or more features (12070A, 12070B, 12070C) forming one or more individual attachment locations for securing the weight (12082) to the club head (12010). A club head (12010) having one or more individual attachment locations differs from other adjustable weighting systems in that the weights may be attached at any, multiple, or an unlimited number of locations on the club head. In the illustrated embodiment, the adjustable weighting system (12066) may include three features (12070A, 12070B, 12070C). In some embodiments, the features (12070A, 12070B, 12070C) can be any one of a protruding body, an opening, a recess, a port that can accommodate a fastener, a notch or tab or a cutout area, a rib or groove, a peg, a hook, a magnet, a programmable magnet, or any other suitable attachment means. In other embodiments, the channel (12013) can include one, two, three, four, five, six, seven, eight, nine, or ten features (12070). As illustrated in FIG. 3 , a third surface (12075) of the channel (12013) can include three individual attachment location features (12070A, 12070B, 12070C). The features (12070A, 12070B, 12070C) can be any of the features discussed above. In another embodiment, features (12070A, 12070B, 12070C) can be positioned on the first, second and/or third surfaces (12073, 12074, 12075) of the channel (12013).

For purposes of this example, in the illustrated embodiment, the features (12070A, 12070B, 12070C) may be an opening configured to receive a screw. The screw may be formed of a material having a density equal to or less than a density of the club head (12010). As illustrated, the features (12070A, 12070B, 12070C) are positioned within the channel (12013) along the third surface (12075) such that one or more weights (12082) may be releasably or removably coupled to the club head (12010) along the channel (12013). More specifically, the first feature (12070A) is positioned along a first region (12077) of the channel (12013) near the toe end (12018), the second feature (12070C) is positioned along a second region (12076) of the channel (12013) near the heel end (12022), and the third feature (12070B) is positioned along a third region (12078) of the channel (12013) between the toe end (12018) and the heel end (12022). In some embodiments, one or more of the features (12070A, 12070B, 12070C) may be positioned on the first wall (12083), the second wall (12084), and/or the concave surface (12081) of the recess (12080).

Still referring to FIGS. 9 and 10, the weight (12082) can have a generally elongated oval shape corresponding to the shape of the channel (12013). In other embodiments, the weight (12082) can have a circular, oval, rectangular, triangular, trapezoidal, polygonal or any other suitable shape configured to fit within the channel (12013). In the illustrated embodiment of FIG. 9, the adjustable weighting system (12066) includes three weights (12082) that can be removably coupled to the features (12070A, 12070B, 12070C) in any configuration. In this embodiment, the number of weights (12082) corresponds to the number of features (12070A, 12070B, 12070C). In the illustrated embodiment of FIG. 10, the adjustable weighting system (12066) includes a single weight (12082) that can be removably coupled to any of the features (12070A, 12070B, 12070C). In other embodiments, the adjustable weighting system (12066) can include more or fewer weights (12082) than the features (12070A, 12070B, 12070C). For example, the adjustable weighting system (12066) can include 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 weights (12082).

In the illustrated embodiment, the weight (12082) includes an opening that extends completely through the weight (12082) and is sized and configured to receive a threaded fastener or screw (not shown). The screw can be threaded into a corresponding feature (12070A, 12070B, 12070C) through the weight (12082) to secure the weight (12082) to the channel (12013). In some embodiments, the weight (12082) can include a recess or insert to receive a top portion of the screw, such that the screw can be positioned flush with the outer portion of the weight (12082). In other embodiments, the weight (12082) can include a blind opening that does not extend completely through the weight (12082). In other embodiments, the weight (12082) can have no opening. In other embodiments, the weight (12082) may be configured to be coupled to the feature (12070A, 12070B, 12070C) via a friction fit, a snap-fit mechanism, a set-screw, or any other suitable structure.

Referring again to FIG. 9, in the illustrated embodiment, each of the features (12070A, 12070B, 12070C) can accommodate a weight (12082). In other embodiments, one or more of the features (12070A, 12070B, 12070C) can accommodate a weight (12082), while the remaining features (12070A, 12070B, 12070C) can be exposed, weightless, or covered with another material or structure. In some embodiments, one or more of the features (12070A, 12070B, 12070C) can accommodate a weight (12082). In some embodiments, one or more of the features (12070A, 12070B, 12070C) do not extend beyond the outer profile of the club head (12010), such that even if the features (12070A, 12070B, 12070C) are left exposed, the features (12070A, 12070B, 12070C) and/or the channel (12013) will not interfere with or disrupt the golfer's swing.

In the illustrated embodiment, each of the weights (12082) is illustrated as having the same shape and size. In other embodiments, the weights (12082) can have different shapes and sizes, such that different weights (12082) can have different masses. Additionally, in some embodiments, the weights (12082) can include different materials such that their masses vary. For example, one weight (12082) can include a high-density material, such as tungsten, and the other weights (12082) can include a lower-density material, such as polyurethane or other plastic. In other embodiments, the weights (12082) can include the same or different materials and can have different sizes or volumes such that their masses vary. For example, one weight (12082) can have a larger volume than the other weights (12082). In some embodiments, each of the weights (12082) can have different volumes, and thus different masses. In some embodiments, the weights (12082) can be of different volumes and materials. In some embodiments, one of the structures indicated by 12082 is not a weight, but rather a lightweight (e.g., lightweight plastic) cover that snaps-fit or otherwise attaches to one of the features (12070A, 12070B, 12070C).

In some embodiments, the weights (12082) can vary from 0.1 - 50 grams. For example, in embodiments having multiple weights (12082), one or more of the weights (12082) can vary from 0 - 10 grams, one or more of the weights (12082) can vary from 10 - 20 grams, one or more of the weights (12082) can vary from 20 - 30 grams, one or more of the weights (12082) can vary from 30 - 40 grams, and one or more of the weights (12082) can vary from 40 - 50 grams. In some embodiments, the first weight (12082) can vary from 0 - 10 grams, the second weight (12082) can vary from 10 - 20 grams, the third weight (12082) can vary from 20 - 30 grams, the fourth weight (12082) can vary from 30 - 40 grams, and the fifth weight (12082) can vary from 40 - 50 grams. In other embodiments, the first weight (11082) can vary from 1 - 5 grams, and the second and third weights (11082) can vary from 5 - 30 grams. In other embodiments, the first and second weights (12082) can vary from 1 - 10 grams, and the third and fourth weights (12082) can vary from 5 - 25 grams. In some embodiments, the first weight (12082) has a mass of 8.5 grams, and the second and third weights (12082) each have a mass of 1.5 grams. In other embodiments, the first weight (12082) has a mass of 12 grams, and the second and third weights (12082) each have a mass of 1.5 grams. In other embodiments, the first weight (12082) has a mass of 8.5 grams, and the second and third weights (12082) each have a mass of 0.75 grams. In other embodiments, the first weight may have a mass of 10-20 grams, 10-25 grams, or 15-25 grams, and the remaining weights (e.g., the second, third, fourth, and fifth weights) may have masses of 0.25-2.5 grams, 0.25-5 grams, 0.25-7.5 grams, or 0.25-10 grams. In other embodiments, the first weight can have a mass of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 grams, and the remaining weights can have masses of 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 grams. In other embodiments, any number of the weights can have the same mass or can have variable masses from 0.1 to 50 grams.

Weights (12082) may be strategically placed on features (12070A, 12070B, 12070C) to achieve a desired club head (12010) center of gravity location and/or moment of inertia and/or heel/toe bias. For example, in some embodiments, a heavier weight (12082) is placed on features (12070B) positioned between the toe or toe end (12018) and the heel or heel end (12022), while a lighter weight or no weight is placed on features (12070A, 12070C) near the toe or toe end (12018) and the heel or heel end (12022). The aforementioned weight (12082) placement causes the center of gravity to be centered while moving toward the rear end (12034) of the club head (12010). In some embodiments, a heavier weight (12082) is positioned on the feature (12070C) at the heel or heel end (12022), a lighter weight (12082) is positioned on the feature (12070B) near the toe or toe end (12018) and between the toe or toe end (12018) and the heel or heel end (12022), or no weight is positioned. The aforementioned weight (12082) placement causes the center of gravity to be moved toward the heel end (12022) of the club head (12010). In some embodiments, a heavier weight (12082) is positioned on a feature (12070A) near the toe or toe end (12018), while a lighter weight (12082) is positioned on a feature (12070C) at the heel or heel end (12022) and a feature (12070B) located between the toe or toe end (12018) and the heel or heel end (12022), or no weight is positioned at all. The aforementioned weight (12082) placement allows the center of gravity to be moved toward the toe end (12018) of the club head (12010). In many embodiments, one or more of the features (12070A, 12070B, 12070C) may have the same size and shape, such that a single weight may be used interchangeably for each of the features (12070A, 12070B, 12070C). In some embodiments, one or more of the features (12070A, 12070B, 12070C) may have varying sizes and shapes, such that each feature (12070A, 12070B, 12070C) may have its own corresponding weight (12082) or set of weights (12082).

An adjustable weighting system (12066) of a golf club head (12010) provides a significant reduction in club head moment of inertia and maintains or prevents a rearward or downward club head CG location compared to a club head without the adjustable weighting system. The adjustable weighting system (12066) of a golf club head (12010) maintains a high club head moment of inertia and a rearward or downward club head CG location due to the low profile of the weighting system and the peripheral placement of the one or more weights. A club head (12010) having the adjustable weighting system (12066) can have similar or identical parameters and measurements as the club head (100) described above.

Figures 15 and 16 illustrate a club head (6810) having a club head body (6814). The club head body (6814) includes an adjustable weighting system (6866) that can be adjusted by the end user to modify the center of gravity and/or moment of inertia and/or heel/backward bias of the club head (6810) to achieve desired performance characteristics (e.g., tolerance, spin, trajectory) in various situations. The club head (6810) may be similar in many respects to the club heads (100, 11010, 12010), and similar or identical numbers represent similar or identical components. The adjustable weighting system (6866) is a low profile system and thus does not significantly shift or change the moment of inertia of the club head (6810) compared to a club head without the adjustable weighting system (6866). Additionally, the low profile adjustable weighting system (6866) ensures that the club head (6810) CG movement occurs primarily from the rear end (6834) downward with a small movement toward the heel end (6822), thereby maintaining the overall CG of the club head (6810) in a rearward and downward position. The center of gravity location and MOI of the club head (6810) may be similar to or identical to the center of gravity location and MOI of the club head (100) described above.

Referring to FIGS. 15 and 16 , the adjustable weighting system (6866) can include a recess (6880). The recess (6880) includes a recessed surface (6881) configured to include a plurality of individual attachment locations. The plurality of individual attachment locations can include various features including protruding bodies, openings, recesses or ports capable of receiving fasteners, notches or tabs or cutout areas, ribs or grooves, pegs, hooks, magnets, programmable magnets, or any other suitable attachment means. In the illustrated embodiment, the adjustable weighting system (6866) includes a recessed surface (6881) having three individual attachment locations. Each of the three individual attachment locations includes features (6870A, 6870B, 6870C). Features (6870A, 6870B, 6870C) can be any of the features discussed above. The attachment locations and corresponding features (6870A, 6870B, 6870C) are configured to accommodate one or more weights (6882).

Referring to FIGS. 15 and 16, the recess (6880) forms a groove, channel and/or recessed track extending along the sole or bottom of the club head (6810). The recess (6880) extends in a V-shaped configuration from the rear end (6834) (reference position) to the sole center (6832) (low spin position) to the heel end (6822) (straight flight position to prevent slicing). The V-shaped configuration is located closer to the heel end (6822) than to the toe end (6818) of the golf club body (6814). The recess (6880) is formed by a concave surface (6881) that is recessed or inserted into the sole (6830). The recess (6880) further includes an outer wall or first wall (6883) extending the entire length of the recess (6880) and an inner wall or second wall (6884) extending the entire length of the recess (6880). In the illustrated embodiment, the first wall (6883) and the second wall (6884) extend substantially perpendicular to the recessed surface (6881) and/or the sole (6830). In other embodiments, the first wall (6883) and the second wall (6884) can extend at a predetermined angle between the recessed surface (6881) and/or the sole (6830).

As illustrated in FIGS. 15 and 16, the recess (6880) includes a first region (6877) near the rear end (6834) and the rear perimeter (10136) (reference position), a second region (6876) near the sole center (6832) of the club head (6810) (low spin position), and a third region (6878) near the heel end (6822) and the rear perimeter (10136) (straight flight position to prevent slicing). However, the regions are not isolated and are generally indistinguishable except for the presence of the attachment means. When a weight (6882) is attached to the club head (6810) in one region of the recess (6880), the weight (6882) can be flush with the sole (6830). When the weight (6882) is coupled to the club head (6810) in a different area of the recess (6880), a portion of the weight (6882) may protrude outwardly from the sole (6830), a portion of the weight (6882) may sink inwardly or be recessed from the sole (6820), or a portion of the weight (6882) may be flush with the sole (6830).

The recess (6881) has a depth measured as a distance from the recess (6881) to the sole (6830) in a direction perpendicular to the recess (6881). In the illustrated embodiment, the recess (6880) has a constant depth. In other embodiments, the recess (6880) can have an increasing, decreasing, varying and/or constant depth along its length from the rear end (6834) to the sole center (6832) and/or from the sole center (6832) to the heel end (6822).

In many embodiments, the recess (6880) has a shallow depth so that the adjustable weighting system (6866) remains low profile. The recess (6880) can have increasing, decreasing, varying and/or constant depths between the first region (6877) and the second region (6876) and/or between the second region (6876) and the third region (6878). For example, in some embodiments, the recess (6880) has a maximum depth of at most 0.50 inches. In other embodiments, the recess (6880) can have a maximum depth of 1.5, 1.25, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2 or 0.1 inches. In other embodiments, the depth of the recess (6880) can vary within the range of 0.05 - 0.25, 0.1 - 0.4, 0.1 - 0.6, 0.1 - 0.8, 0.2 - 0.4, 0.2 - 0.6, 0.2 - 0.8, 0.3 - 0.7, 0.3 - 0.9, 0.4 - 0.8, 0.4 - 1.2, 0.5 - 1.0, 0.5 - 1.5 or 1.0 - 1.5 inches.

Additionally, the recessed portion (6880) has a cross-sectional shape and a cross-sectional area. In some embodiments, the cross-sectional shape of the channel (6813) can include a cylinder, a circle, a rectangle, a triangle, a polygon, or a trapezoid. The recessed portion (6880) can have a cross-sectional shape that varies and/or is constant between the first region (6877) and the second region (6876) and/or between the second region (6876) and the third region (6878). The recessed portion (6880) can have a cross-sectional area that increases, decreases, varies, and/or is constant between the first region (6877) and the second region (6876) and/or between the second region (6876) and the third region (6878).

Additionally, the recess (6880) has a width measured as the distance between the first wall (6883) and the second wall (6884). In some embodiments, the width between the first region (6877) and the second region (6876) is different from the width between the second region (6876) and the third region (6878). In some embodiments, the width between the first region (6877) and the second region (6876) is greater than the width between the second region (6876) and the third region (6878). In other embodiments, the width between the first region (6877) and the second region (6876) is less than the width between the second region (6876) and the third region (6878). In other embodiments, the recess (6880) can have an increasing, decreasing, varying and/or constant width between the first region (6877) and the second region (6876) and/or between the second region (6876) and the third region (6878). In many embodiments, the width can be less than 2.0 inches. For example, in some embodiments, the width can be less than 2.0, 1.75, 1.5, 1.25, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3 or 0.2 inches. In other embodiments, the width can vary from 0.1 to 0.5, 0.3 to 0.7, 0.5 to 0.9, 0.7 to 1.1, 0.9 to 1.3, 1.1 to 1.5, 1.3 to 1.7, or 1.5 to 2.0 inches.

Referring again to FIGS. 15 and 16 , the recess (1880) may include one or more features (6870A, 6870B, 6870C) forming individual attachment locations for securing the weight (6882) to the club head (6810). A club head (6810) having more than one individual attachment location differs from other adjustable weighting systems in that the weight may be attached at any, multiple, or an unlimited number of locations on the club head. Referring again to FIGS. 15 and 16 , in the illustrated embodiment, the recess (6880) may include three features (6870A, 6870B, 6870C). The features (6870A, 6870B, 6870C) are illustrated as openings configured to receive a threaded fastener or a screw fastener (6885). The weight of the screw fastener (6885) can be equal to or less than the amount of weight removed to form the feature (6870A, 6870B, 6870C). Additionally, the screw fastener (6885) can include a material having a density equal to or less than the density of the material of the club head body. The screw fastener (6885) is configured to attach the weight (6882) to the feature (6870A, 6870B, 6870C). In other embodiments, the feature (6870A, 6870B, 6870C) can be a protruding body, opening, recess, port capable of receiving a fastener, a notch or tab or cutout area, a rib or groove, a peg, a hook, a magnet, a programmable magnet, or any other suitable attachment means. In the illustrated embodiment, the adjustable weighting system (6866) includes three features (6870A, 6870B, 6870C). In other embodiments, the recess (6880) can include any number of features, including 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 features (6870).

As illustrated, features (6870A, 6870B, 6870C) are positioned within the recess (6880) along the recess (6881) such that one or more weights (6882) can be removably or detachably coupled to the club head (6810) along the recess (6880). More specifically, the first feature (6870A) is positioned in a first region (6877) of the recess (6880) near the rear end (6834), the second feature (6870B) is positioned in a second region (6876) of the recess (6870) near the sole center (6832), and the third feature (6870C) is positioned in a third region (6878) of the recess (6880) near the heel end (6822). In another embodiment, one or more of the features (6870A, 6870B, 6870C) may be positioned on the first wall (6883), the second wall (6884), and/or the concave surface (6881) of the recess (6880).

Still referring to FIGS. 15 and 16, the weight (6882) has a generally rectangular shape. In other embodiments, the weight (6882) can have a circular, oval, triangular, trapezoidal, polygonal, or any other suitable shape configured to fit within the recess (6880). In the illustrated embodiment, the adjustable weighting system (6886) includes a weight (6888). The weight (6882) can vary from 0.1 to 50 grams. In some embodiments, the weight (6882) can vary from 0.1 to 0.5 grams, 0.5 to 1 grams, 1 to 5 grams, 5 to 10 grams, 10 to 20 grams, 20 to 30 grams, 30 to 40 grams, 40 to 50 grams. For example, the weights (6882) can be 0.1, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, or 50 grams. In another embodiment, the adjustable weighting system (6866) can include three weights (6882) corresponding to the number of features (6870A, 6870B, 6870C). In another embodiment, the adjustable weighting system (6866) can include more or fewer weights (6882) than the number of features (6870A, 6870B). For example, the adjustable weighting system (6866) can include 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 weights (6882).

In an illustrated embodiment, the weight (6882) includes an opening extending completely through the weight (6882) that is sized and configured to receive a threaded fastener or screw fastener (6885). The screw fastener (6885) can be threaded into a corresponding feature (6870A, 6870B, 6870C) through the weight (6882) to secure the weight (6882) to the recess (6880). In some embodiments, the weight (6882) can include a recess or insert to receive an upper portion of the screw fastener (6885), such that the screw fastener (6885) can be flush with the exterior of the weight (6882). In other embodiments, the weight (6882) may be configured to be coupled to the feature (6870A, 6870B, 6870C) via a friction fit, a snap-fit mechanism, a set-screw, or any other suitable structure.

In embodiments where the adjustable weighting system (6866) includes two or more weights (6882), each of the weights (6882) can have the same shape and size. In other embodiments, the weights (6882) can have different shapes and sizes, such that the weights (6882) can have different masses. Additionally, in some embodiments, the weights (6882) can include different materials to vary the masses. For example, one weight (6882) can include a high-density material, such as tungsten, and the other weights (6882) can include a lower-density material, such as polyurethane or other plastic. In other embodiments, the weights (6882) can include the same or different materials and can have different sizes or volumes to vary the masses. For example, one weight (6882) can have a larger volume than the other weights (6882). In some embodiments, each of the weights (6882) can have a different volume, and therefore a different mass. In some embodiments, the weights (6882) can have different volumes and materials. In some embodiments, one of the structures indicated by 6882 is not a weight, but rather a lightweight (e.g., lightweight plastic) cover that snaps-fit or otherwise attaches to one of the features (6870A, 6870B, 6870C).

In some embodiments, the weights (6882) can vary from 0.1 - 50 grams. For example, in embodiments having multiple weights (6882), one or more of the weights (6882) can vary from 0 - 10 grams, one or more of the weights (6882) can vary from 10 - 20 grams, one or more of the weights (6882) can vary from 20 - 30 grams, one or more of the weights (6882) can vary from 30 - 40 grams, and one or more of the weights (6882) can vary from 40 - 50 grams. In some embodiments, the first weight (6882) can vary from 0 - 10 grams, the second weight (6882) can vary from 10 - 20 grams, and the third weight (6882) can vary from 20 - 30 grams. In other embodiments, the first weight (6882) can vary from 1 - 5 grams, and the second and third weights (6882) can vary from 5 - 30 grams. In other embodiments, the first and second weights (6882) can vary from 1 - 10 grams, and the third and fourth weights (6882) can vary from 5 - 25 grams. In some embodiments, the first weight (6882) has a mass of 8.5 grams, and the second and third weights (6882) each have a mass of 1.5 grams. In another embodiment, the first weight (6882) has a mass of 12 grams and the second and third weights (6882) each have a mass of 1.5 grams. In another embodiment, the first weight (6882) has a mass of 8.5 grams and the second and third weights (6882) each have a mass of 0.75 grams. In other embodiments, the first weight can have a mass of 10-20 grams, 10-25 grams or 15-25 grams and the remaining weights (e.g., the second and third weights) can have a mass of 0.25-2.5 grams, 0.25-5 grams, 0.25-7.5 grams or 0.25-10 grams. In other embodiments, the first weight can have a mass of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 grams, and the remaining weights can have masses of 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 grams. In other embodiments, any number of the weights can have the same mass or can have variable masses from 0.1 to 50 grams.

Referring still to FIGS. 15 and 16 , in the illustrated embodiment, one of the features (6870A, 6870B, 6870C) can accommodate a weight (6882), while the remaining features (6870A, 6870B, 6870C) can be exposed, free of weight, or covered with another material or structure. In other embodiments, each of the features (6870A, 6870B, 6870C) accommodates a weight (6882). In some embodiments, more than one of the features (6870A, 6870B, 6870C) can accommodate a weight (6882). In some embodiments, one or more of the features (6870A, 6870B, 6870C) do not extend beyond the outer profile of the club head (6810), such that even if the features (6870A, 6870B, 6870C) are left exposed, the features (6870A, 6870B, 6870C) and/or the recess (6880) will not interfere with or disrupt the golfer's swing.

The weights (6882) may be strategically placed on the features (6870A, 6870B, 6870C) to achieve a desired club head (6810) center of gravity location and/or moment of inertia and/or heel/rear bias. For example, in some embodiments, a heavier weight (6882) is positioned on the feature (6870A) near the rear end (6834), while a lighter weight is positioned on the features (6870B, 6870C) near the sole center (6832) and the heel end (6822). The aforementioned weight (6882) positions cause the center of gravity to move toward the rear end (6834) of the club head (6810).

In some embodiments, a heavier weight (6882) is positioned on feature (6870C) near the heel end (6822), while a lighter weight (6882) is positioned on feature (6870A) near the rear end (6834) and feature (6870B) near the sole center (6832). The aforementioned weight (6882) positions cause the center of gravity to move toward the heel end (6822) of the club head (6810).

In some embodiments, a heavier weight (6882) is positioned on a feature (6870B) located at the sole center (6832), while a lighter weight (6882) is positioned on a feature (6870A) near the rear end (6834) and a feature (6870C) near the heel end (6822). The aforementioned weight (6882) positions ensure that the center of gravity is centered over the club head (6810).

In many embodiments, one or more of the features (6870A, 6870B, 6870C) may have the same size and shape, such that a single weight may be used interchangeably for each of the features (6870A, 6870B, 6870C). In some embodiments, one or more of the features (6870A, 6870B, 6870C) may have varying sizes and shapes, such that each feature (6870A, 6870B, 6870C) may have its own corresponding weight (6882) or set of weights (6882). Additionally, positioning of the weights (6882) on the features (6870A, 6870B, 6870C) may also affect the spin imparted to the ball after impact.

An adjustable weighting system (6866) of a golf club head (6810) provides a significant reduction in club head moment of inertia and maintains or prevents a rearward or downward club head center of gravity location compared to a club head without the adjustable weighting system. The adjustable weighting system (6866) of a golf club head (6810) maintains a high club head moment of inertia and a rearward or downward club head CG location due to the low profile of the weighting system and the peripheral placement of the one or more weights.

Figures 11 and 12 illustrate a club head (13010) similar to the golf club head (100) described above. The club head (13010) having a club head body (13014) includes an adjustable weighting system (13066) including a tensioner (13067) and cables (13069) that can be adjusted by an end user to modify the center of gravity and/or moment of inertia and/or heel/toe bias of the club head (13010) to achieve desired performance characteristics (e.g., tolerance, spin, trajectory) in various situations. The adjustable weighting system (13066) is a low profile system and thus does not significantly shift or change the MOI of the club head (13010) compared to a club head without the adjustable weighting system (13066). Additionally, the low profile adjustable weighting system (13066) ensures that the movement of the club head (13010) CG occurs primarily from the heel end (13022) to the toe end (13018), thereby maintaining the overall CG of the club head (13010) in a rearward and downward position. The center of gravity location and MOI of the club head (13010) may be similar to or identical to the center of gravity location and MOI of the club head (100) described above.

An adjustable weighting system (13066) is positioned on the sole (13030) of the club head (13010). As illustrated in FIGS. 11 and 12, the sole (13030) includes a recess (13080) having a concave surface (13081). The recess (13080) may be substantially rectangular in shape and may be positioned near the rear end (13023) and extend from near the toe end (13018) and the rear perimeter (10136) to near the heel end (13022) and the rear perimeter (10136). In the illustrated embodiment, the recess (13080) extends generally parallel to the striking face (38). In other embodiments, the recess (13080) may be positioned anywhere on the sole (13030) and may have any shape. The recess (13080) is formed concavely from the outer surface (13074) of the sole (13030) by a wall (13083). In the illustrated embodiment, the wall (13083) is perpendicular to the recess (13081) or the outer surface (13074) of the sole (13030). In other embodiments, the wall (13083) may be angled or reduced at a non-perpendicular angle relative to the recess (13081) or the outer surface (13074) of the sole (13030). In embodiments such as those illustrated in FIGS. 11 and 12, the wall (13083) may contact the entire perimeter of the recess (13080). In other embodiments, the wall (13083) may contact a portion of the recess (13080).

In many embodiments, the wall (13083) may include a first wall portion (13089) positioned toward the striking face (38) of the club head (13010), a second wall portion (13090) positioned opposite the first wall portion (13089) and toward the rear end (13023) of the club head (13010), a first end wall (13091) positioned toward the toe end (13018) of the club head (13010), and a second end wall (13092) positioned opposite the first end wall (13091) and toward the heel end (13022) of the club head (13010). In general, the concave surface (13081) extends substantially parallel to the sole (13030) of the club head (13010), while the first and second wall portions (13083, 13084) and the first and second end walls (13091, 13092) extend substantially perpendicular to the concave surface (13081) and/or the sole (13030). In other embodiments, the first and second wall portions (13083, 13084) and/or the first and second end walls (13091, 13092) may extend at a non-perpendicular angle between the concave surface (13081) and the sole (13030).

In many embodiments, such as those illustrated in FIGS. 11 and 12, the sole (13030) can further include one or more openings (13085) extending from an exterior surface (13074) of the sole (13030) into the club head body and recess (13080). In some embodiments, the sole (13030) can include one, two, three, four or five openings (13085). In the illustrated embodiments of FIGS. 11 and 12, the sole (13030) includes two openings (13085). In the illustrated embodiments, the openings (13085) are located on opposite sides of the recess (13080). The openings (13085) are located on the exterior surface (13074) of the sole and extend into the recess (13080) of the adjustable weighting system. In the illustrated embodiment, the opening (13085) extends into the first and second end walls (13091, 13092) of the recess (13080). The opening (13085) is configured to receive a tensioner (13067) of the adjustable weighting system (13066). As illustrated in FIG. 13, the opening (13085) includes a threaded end (13086) adjacent the recess (13080) and a head or receiving end (13087) adjacent the outer surface (13074) of the sole (13030).

In the illustrated embodiment, the recess (13080) further includes a plurality of discrete attachment locations. The plurality of discrete attachment locations can include a feature (13070) that includes a protruding body, opening, recess, or port that can receive a fastener, a notch or tab or cutout area, a rib or groove, a peg, a hook, a magnet, a programmable magnet, or any other suitable attachment means. The feature (13070) forms a discrete attachment location for securing one or more weights (13082) to the club head (13010). A club head (13010) having one or more discrete attachment locations differs from other adjustable weighting systems in that the weights can be attached at any, multiple, or an unlimited number of locations on the club head. In the illustrated embodiment, the feature (13070) is a vertical protrusion or rib (13070) extending generally perpendicularly to the striking face (38) from the recess (13080). In another embodiment, the feature (13070) can be a protrusion extending from the recess (13080) in any shape (e.g., a circular peg, an hourglass-shaped peg, a square peg, etc.) at any location.

As illustrated in FIGS. 11 and 12, the recess (13080) includes five features (13070), namely a first feature (13070A) near the toe end (13018), a second feature (13070E) near the heel end (13022), a third feature (13070C) between the first feature (13070A) and the second feature (13070E), a fourth feature (13070B) between the first feature (13070A) and the third feature (13070C), and a fifth feature (13070D) between the second feature (13070E) and the third feature (13070C). In other embodiments, the recess (13080) can include any number of features (13070). For example, a recess (13080) can include one feature (13070), two features (13070), three features (13070), four features (13070), five features (13070), six features (13070), seven features (13070), or eight features (13070). In some embodiments, each of the features (13070) is spaced generally equidistant from one another. In other embodiments, each of the features (13070) can be spaced any distance apart from one another. In some embodiments, the features (13070) form a square opening (or pocket) between each of the features (13070). In another embodiment, the features (13070) can form pockets of any shape (e.g., polygons or any shape having at least one curved surface) between each feature (13070).

The weight (13082) is configured to be received by the feature (13070) within the recess (13080). The weight (13082) has a general cross-sectional shape and size (e.g., cylindrical, cubical, rectangular, trapezoidal, etc.) corresponding to the cross-sectional shape of the recess (13080). As illustrated in FIGS. 11 and 12 , the weight (13082) may have a rectangular cross-sectional shape. The weight (13083) may further include a notch (13084) positioned on a lower surface of the weight (13083). The notch (13084) on the weight (13083) is configured to mate with the feature (13070) of the recess (13080). In many embodiments, the shape of the notch (13084) on the weight (13082) corresponds to the shape of the feature (13070) of the recess (13080).

The weight (13082) may further include a through hole (13071) configured to receive a cable (13069) of the adjustable weighting system (13066). The through hole (13071) may extend through the weight (13082) from the heel end (13022) to the toe end (13018) of the club head (13010) when the weight (13082) is positioned within the recess (13080). When assembled, the through hole (13071) is parallel to the recess (13081). In other embodiments, the weight (13082) may lack the through hole (13071). In these or other embodiments, the weight (13082) may include a groove (not shown) positioned on an upper surface of the weight (13082) to receive the cable (13069).

The weight (13082) has a mass. The mass of the weight (13082) can range from 3 - 35 grams, 3 - 12 grams, 5 - 18 grams, 8 - 23 grams, 12 - 25 grams, 18 - 27 grams, 20 - 30 grams, 25 - 33 grams, or 28 - 35 grams. For example, the weight (13082) can be 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, or 35 grams. In embodiments where the club head (13010) includes multiple weights (13082), the weights (13082) can all have the same mass or can all have different masses. For example, the club head (13010) includes three weights (13082), including a first weight (13082) having a mass of 12 grams and second and third weights (13082) having masses of 5 grams. In another example, the club head (13010) includes five weights (13082), namely, a first weight (13082) having a mass of 20 grams, a second weight (13082) having a mass of 15 grams, a third weight (13082) having a mass of 10 grams, a fourth weight (13082) having a mass of 7 grams, and a fifth weight (13082) having a mass of 3 grams.

An adjustable weighting system (13066) including a tensioner (13067) and a cable (13069) is configured to couple a weight (13082) to a club head (13010). The tensioner (13067) of the adjustable weighting system (13066) includes a fastener (13067A) and a washer (13067B). In some embodiments, as illustrated in FIG. 14 , the tensioner (13067) may be a clutch brake cable adjuster, wherein a notch (13068) is cut into the fastener (13067A) (extending the entire length of the fastener (13067A)) and the washer (13067B). The notch (13068) in the fastener (13067A) and washer (13067B) allows the cable (13069) to be coupled to the fastener (13067). In other embodiments, the tensioner (13067) can be any type of fastener and washer having a notch configured to receive the cable (13069).

As illustrated in FIGS. 12 and 13, the tensioner (13067) is configured to be received within the opening (13085) of the sole (13030). The tensioner (13067) can be inserted into the receiving end (13087) of the opening, the threaded end of the fastener (13067A) engages the threaded end (13086) of the opening (13085), and the fastener (13067B) is held in the receiving end (13087) of the opening. In some embodiments, the adjustable weighting system (13066) can include two or more tensioners (13067). For example, the adjustable weighting system (13066) can include one tensioner, two tensioners, three tensioners, or four tensioners (13067). In many embodiments, the number of tensioners (13067) corresponds to the number of openings (13085) configured to receive the tensioners (13067). For example, as illustrated in FIGS. 11 and 12 , the sole (13030) includes a first opening (13085) provided near the toe end (13018) to receive a first tensioner (13067) and a second opening (13085) provided near the heel end (13022) to receive a second tensioner (13067). In many embodiments, the tensioner (13067) does not extend beyond the outer surface (13074) of the sole (13030) when received within the opening (13085).

A cable (13069) of an adjustable weighting system (13066) is configured to be received by a tensioner (13067) and positioned within a recess (13080). The cable (13069) can be coupled to the tensioner (13067) via a notch (13068) of a fastener (13067A) and a washer (13067B), after which the washer (13067B) is rotated to secure the cable (13069) within the fastener (13067A). An end of the cable (13069) includes a width greater than the width of the notch (13068), which prevents the cable (13069) from disengaging from the fastener (13067A) when tension is applied to the cable (13069). In some embodiments, the adjustable weighting system (13066) includes a tensioner (13067), wherein one end of a cable (13069) is configured to be coupled to the tensioner (13067), and the other end of the cable (13069) is configured to be attached/secured to an end of the club head (13010) opposite the tensioner (13067). In other embodiments, the adjustable weighting system includes two tensioners (13067), wherein one end of the cable (13069) may be configured to be coupled to a first tensioner (13067), and the other end of the cable (13069) may be configured to be coupled to a second tensioner (13067). For example, as illustrated in FIGS. 11 and 12, one end of the cable (13069) may be coupled to a first tensioner (13067) near the heel end (13022), and the other end of the cable (13069) may be coupled to a second tensioner (13067) near the toe end (13018).

The cable (13069) may be a metallic material (e.g., steel wire rope, aluminum wire rope, copper wire rope, tungsten wire rope, nickel wire rope, silver wire rope, or any other metallic wire rope) or a non-metallic material such as a fiber, polymer, plastic, or composite type rope. For example, the cable (13069) may include baling twine, parachute line material, nylon, Kevlar, polymer tweed, polymer coated steel wire, polymer coated metal wire, high modulus polyethylene fiber, nylon having polycarbonate, polyoxymethylene, and/or polyamide.

The tensioner (13067) can be rotated (i.e., twisted) to adjust the tension on the cable (13069) when received within the opening (13085) of the sole (13030). The notch (13068) of the tensioner (13067) allows the cable (13069) to be engaged to the tensioner (13067) in such a way that the cable (13069) remains stationary and does not rotate with the tensioner (13067) when the tensioner (13067) rotates. A washer (13067B) of the tensioner (13067) acts as a stop within the opening (13085) to prevent the fastener (13067A) of the tensioner (13067) from moving within the opening (13085) during a swing and/or impact. As the tensioner (13067) is rotated clockwise, the tensioner (13067) moves deeper into the opening (13085), relieving the cable. When the cable (13069) becomes slack, the weight (13082) can be lifted from the feature (13070) within the recess (13080) (or the weight (13082) having a through hole (13071) that can slide along the cable (13069)) and moved to another feature (13070). Additionally, when the cable (13069) becomes slack, an additional weight (13082) including a groove (not shown) can be positioned on the feature (13070) and below the cable (13069) to increase weight. Repositioning the weight (13082) reconfigures the CG of the club head (13010). For example, the weight (13082) can be moved from the first feature (13070A) near the toe end (13018) to the heel end (13018). The second feature (13070E) near the heel end (13022) may be relocated, wherein the CG movement toward the heel end (13022) assists a player who wishes to slice and/or draw the golf ball in correcting the golf ball trajectory. In other embodiments, the cable (13069) may be slackened by means other than the tensioner (13067).

The tensioner (13067) can be rotated (i.e., twisted) counterclockwise to increase tension within the cable (13069), and the washer (13067B) prevents the fastener (13067A) of the tensioner (13067) from moving within the opening (13085). When the tensioner (13067) is rotated counterclockwise, the tensioner (13067) positioned in the opening (13085) extends outwardly toward the outer surface (13074) of the sole (13030), whereby the tensioner (13067) becomes flush with the outer surface (13074), indicating that the cable (13069) has reached maximum tension. As illustrated in FIG. 12, when the cable (13069) is tightened and the cable (13069) presses against the weight (13082) (i.e., presses against the through-hole (13071) or groove), a force is applied against the feature (13070) of the recess (13080) to secure the weight (13082). When the weight (13082) contacts the feature (13070), the weight (13082) is flush with the outer surface (13074) of the sole (13030). In another embodiment, when the weight (13082) contacts the feature (13070), the weight (13082) may extend beyond the outer surface (13074) of the sole (13030), but the weight (13082) does not extend beyond the lowest point of the club head (13010) at address. In another embodiment, when the weight (13082) contacts the feature (13070), the weight (13082) may be recessed from the outer surface (13074) of the sole (13030) and may not extend into or beyond the outer surface thereof. In another embodiment, the cable (13069) may be pulled by means other than the tensioner (13067).

A club head (13010) having an adjustable weighting system (13066) including a tensioner (13067) (or other cable adjustment means) and the cables (13069) described above can optimize the performance of a golf club. The adjustable weighting system (13066) allows the club head (13010) to adjust the weight of a low club head center of gravity about the x-axis (heel-toe end) without sacrificing a high moment of inertia (MOI) similar to a club head without the adjustable weighting system. Moving the CG about the x-axis can allow a player to correct a slice or hook in their ball trajectory.

A club head (13010) including an adjustable weighting system (13066) having a tensioner (13067) and cables (13069) has additional advantages with respect to ease of manufacture compared to club heads having more complex structures for receiving the weights (e.g., deeper weight ports, multiple weight ports, rail systems, weight covers/caps). The weight(s) (13082) coupled to the club head body (13014) are held in place by tension in the cables (13069) which generate force against the weight(s) (13082) on the features (13070) of the club head (13010). The tension generating force eliminates the need for the club head (13010) to be manufactured with a weight receiving structure having complex internal/external geometries to hold the weight(s) (13082). Thus, the material and mass associated with the complex weight receiving structure can be reduced. The mass saved by using a low profile adjustable weighting system can be placed elsewhere in the club head to increase strength and/or MOI and improve CG placement. The tensioning force of the cables (13069) further eliminates the need for threaded fasteners, so that the weight(s) (13082) and club head (13010) do not need to have receiving shapes and threaded holes to accommodate fasteners. The absence of fasteners and threaded holes reduces manufacturing costs and improves ease of manufacture.

Additionally, the cables (13069) of the adjustable weighting system (13066) are lightweight and strong and can be incorporated into a number of different patterns on the recess (13080) of the club head (13010). The different patterns allow the weight(s) (13082) to be placed in a number of different locations on the sole (13030) because the weight(s) (13082) are not limited to a particular weight receiving structure. The number of different weight locations can help individual players fine-tune CG placement to tailor ball spin and trajectory. The cables (13069) can also be strategically placed in patterns that allow the cables to reinforce specific locations on the club head (13010). The material and pattern of the cables (13069) can additionally act as sound absorbing means to absorb vibrations experienced by the club head (13010) during impact, thereby reducing unwanted sounds and unwanted stresses during the game.

An adjustable weighting system (13066) of a golf club head (13010) provides a significant reduction in club head moment of inertia and maintains or prevents a rearward or downward club head CG location compared to a club head without the adjustable weighting system. The adjustable weighting system (13066) of a golf club head (13010) maintains a high club head moment of inertia and a rearward or downward club head CG location due to the low profile of the weighting system and the peripheral placement of the one or more weights. A club head (13010) having the adjustable weighting system (13066) can have similar or identical parameters and measurements as the club head (100) described above.

In some embodiments, one or more of the other adjustable weights described herein (e.g., 11082, 6882, 12082, and/or 13082) can be positioned a minimum distance in the range of about 1.0 to 2.6 inches (e.g., about 1.0 inches, about 1.2 inches, about 1.4 inches, about 1.6 inches, about 1.8 inches, about 2.0 inches, about 2.2 inches, about 2.4 inches, or about 2.6 inches) from the center of gravity (CG) of the associated club head. In some embodiments, one or more of the other adjustable weights described herein (e.g., 11082, 6882, 12082, and/or 13082) can also be positioned within a maximum distance of about 0.450 to about 0.550 inches inwardly from a perimeter of the associated club head when viewed in a top or side view (e.g., the maximum distance from the perimeter can be about 0.450 inches, about 0.460 inches, about 0.470 inches, about 0.480 inches, about 0.490 inches, about 0.500 inches, about 0.510 inches, about 0.520 inches, about 0.530 inches, about 0.540 inches, or about 0.550 inches). Other embodiments include different values and ranges.

In some embodiments, the weight or weights described herein (e.g., 11082, 6882, 12082, and/or 13082) can include at least a portion of a high-density metal, metal alloy, or any other material (e.g., a plastic or composite including high-density metal beads or powder). In some embodiments, the weight (11082, 6882, 12082, and/or 13082) can include at least a portion of steel, tungsten, aluminum, titanium, vanadium, chromium, cobalt, nickel, another metal, metal alloy, or any combination thereof.

In many embodiments, the cable (13069) can have a thickness of 0.020 - 0.125 inches. For example, in some embodiments, the cable (13069) can have a thickness of 0.021 - 0.041 inches, 0.037 - 0.057 inches, 0.053 - 0.073 inches, 0.068 - 0.088 inches, 0.084 - 0.104 inches, 0.099 - 0.119 inches, or 0.115 - 0.135 inches.

In some embodiments, the cable can withstand a tensile load of up to 1500 Newtons (N). For example, in many embodiments, the cable can withstand a tensile load of 200 - 1500 N. For example, in some embodiments, the cable can withstand a tensile load of up to 200 N, up to 300 N, up to 400 N, up to 500 N, up to 600 N, up to 700 N, up to 800 N, up to 900 N, up to 1000 N, up to 1100 N, up to 1200 N, up to 1300 N, up to 1400 N, or up to 1500 N. Other embodiments may include other ranges and values.

In some embodiments, one or more of the club heads described herein may include two or more tensioners. For example, in some embodiments, the club head (13010) may include two or more tensioners (e.g., along a single recess or separate recesses of the club head) each coupled to one or more cables. In some embodiments, one tensioner tensions a first set of cables to maintain a weight or weights relative to the club head, and the other tensioner tensions a second set of cables to maintain a weight or weights relative to the club head.

While some of the embodiments described herein include a single cable, other embodiments include multiple cables, any of the embodiments described herein may include single or multiple cables associated with one or more tensioners.

While some of the embodiments described herein include a single channel or recess that provides features for guiding cables and/or positioning a weight or weights, and other embodiments described herein include a separate network of channels that provide features for guiding one or more cables and/or positioning one or more weights, any of the embodiments described herein can include a single channel or a network of channels. Additionally, while a particular channel network is illustrated, any of the club heads described herein can include any arrangement, pattern, or size of channels.

While various grooves (not shown) within the weights have been described above, other embodiments include grooves of different numbers, sizes, and shapes to accommodate the cables. For example, in some embodiments, one or more of the weights (13082) include a groove or track having a C-shaped contour (as opposed to a U- or V-shaped contour) such that the cable or cables can "snap" into the groove and be generally held in place within the groove while still allowing the weight to slide along the cable. In some embodiments, one or more of the channels for the cable or cables have a C-shaped (or other shaped) contour or track (as opposed to a U- or V-shaped contour) such that the cable or cables can "snap" into the channel and be generally held in place within the channel while still allowing the cable to move within the channel. In some embodiments, the channels include tracks or other contours that retain or restrain the cables from dislodging from the channel during tensioning of the cables, for example as the channel bends along the club head body.

In some embodiments, one or more of the weights described herein (e.g., 11082, 6882, 12082, and/or 13082) are magnetically attached to the club head (11010, 12010, and 13010) such that the weight or weights can be held in place relative to the club head at least partially by magnetic force. For example, in some embodiments, one or more of the features (11070, 6870, and 12070) is a protruding body or notch formed at least partially of a metallic material, and one or more of the weights (11082, 6882, 12082, and/or 13082) is formed at least partially of a magnetic material. The weight or weights may be held in place at least partially by magnetic attraction between the magnet or magnets and the feature or features, as well as by one or more of the other structures described herein (e.g., threaded protruding posts, ribs, etc.). In some embodiments, the weight or weights can be snapped into place over the protruding body or within the notch and held against the club head at least partially by frictional forces, as well as magnetic forces. In some embodiments, the weight or weights can be held in place solely by magnetic forces. In yet other embodiments, one or more of the weights (11082, 6882, 12082, and/or 13082) are at least partially comprised of a metallic material, and one or more of the features (11070, 6870, 12070, and 13070) are at least partially comprised of a magnetic material.

In some embodiments, one or more of the weights described herein (e.g., 13082) are held against the club head (13010) solely by tension in the cable or cables. Thus, in at least some embodiments, the club head does not include a separate notch or protrusion or other feature sized and shaped to receive a single weight. Rather, the club head includes a larger surface (e.g., a concave surface) and one or more cables coupled to (e.g., pressed against) a tensioner and one or more weights. Tension in the cable or cables via activation of the tensioner is sufficient to hold the weight or weights in a desired position or location relative to the club head. When the tension is released in the tensioner, the weight or weights can be moved along the surface to a different position.

In some embodiments, one or more of the weights described herein (e.g., 11082, 6882, 12082, and/or 13082) include a rail or rails (e.g., a T-shaped rail, etc.) along a portion of the weight. Additionally, one or more channels (e.g., a network of channels) sized and shaped to receive the rail or rails may be formed in the club head, such that the weight or weights can slide along the channels from one location along the club head to another. In some embodiments, at least one tensioner and cable and/or at least one magnet may also be provided to assist in securing the weight or weights at various locations along the club head (e.g., along the channels).

In some embodiments, one or more of the weights described herein (e.g., 11082, 6882, 12082, and/or 13082) may include a port or hole for receiving a protrusion from the club head body, or the weight includes a protrusion or screw that is received in a hole or port in the club head body (e.g., a recessed area of the club head body).

Additionally, while some of the above embodiments have been described with respect to having a concave region and/or surface in the sole of the club head body, in some embodiments the club head body may also include a concave region including a concave surface along the crown or top of the club head. Thus, while generally described above as being primarily disposed at the sole of the club head, in some embodiments the adjustable weighting system (11066, 6866, 12066 and 13066) may instead be primarily disposed at the crown, skirt, heel, or toe of the club head.

While various protrusions are exemplified and described herein as being used to attach weights to a club head, the specific shape and size of the protrusions is not limited. Thus, protrusions of various shapes (e.g., tapered protrusions or protrusions of various sizes and shapes) may be used, including cylindrical, rectangular, square, spiral, trapezoidal, pyramidal, etc. The protrusions and/or corresponding apertures may be key-connected to engage one another. Some of the protrusions may be wings or tabs extending away from the club head, or may be posts. Various other types of protrusions may also be used.

While various covers, sole plates, geometric patterns, tensioners, cables, guides, clips, elongated channels, additional channels, screw openings and other features have been described above with respect to a particular embodiment or embodiments, in another embodiment one or more of these features may be combined with one or more of the other features on the golf club head described above or in another embodiment.

Although not illustrated, in some embodiments, one or more of the club heads described herein may also include additional openings that may be filled with a polymer adhesive or other material for additional weighting.

In some embodiments, a tool may be used to tighten, loosen, and/or remove one or more of the weights described herein. For example, in some embodiments, one or more of the weights may include a specially designed or custom hole or a specially designed socket that is sufficiently sized to engage a portion of a tool (e.g., a torque wrench) that facilitates coupling the weight to the torque wrench. The hole or socket may be any suitable shape, such as a star, triangle, square, slot, Phillips®, Torx®, POSIDRIV®, SUPADRIVE®, pentagon, hexagon, or other suitable polygonal or other key shape.

Example 1 - Weighting system for adjustable drivers

According to an example of a golf club head (12010) illustrated in FIGS. 9 and 10, the club head (12010) has a volume of 457 cubic centimeters (cc). The exemplary club head (12010) includes a recess (12013) having a channel positioned at a trailing edge (12072) along a rear perimeter (10136). The recess (12013) includes a bottom wall or third surface (12075) having three attachment locations or features having threaded openings. The attachment locations include a first attachment location or feature (12070A) near the toe end (12018), a second attachment location or feature (12070C) near the heel end (12022), and a third attachment location or feature (12070B) between the toe end (12018) and the heel end (12022).

An adjustable weighting system (12066) of an exemplary club head (12010) further includes a first weight (12082) having a mass of 18 grams. The first weight (12082) has a height (10152) of 0.33 inches, a width (10154) of 1.18 inches, and a depth of 0.29 inches. The first weight (12082) includes openings corresponding to a plurality of openings forming individual attachment locations on the club head (12010). The first weight (12082) is secured to the individual attachment locations using fasteners positioned through the openings in the first weight (12082) and the openings in the club head (12010). The fasteners comprise a material that is the same material as the body or has a density less than that of the body, so that the fasteners do not significantly contribute to club head weighting.

The first weight (12082) can be positioned at a first attachment location near the toe, a second attachment location near the heel, or a third attachment location between the toe and the heel. Referring to Table 1 below, the center of gravity (10134) of the first weight is positioned 0.19 to 0.22 inches (10142) from the rear perimeter (10136) of the club head (6710) when the first weight is positioned at the first, second, or third attachment locations. Additionally, the center of gravity (10134) of the first weight is positioned 3.26 to 4.41 inches (10138) from the geometric center (140) of the striking face (38) when the first weight is positioned at the first, second, or third attachment locations.

Referring further to Table 1 below, the club head (6710) includes a head CG depth (10130) of 1.59 - 1.71 inches and a head CG height (10132) of 0.088 - 0.108 inches above the head depth plane (10120). The exemplary club head (6710) further includes a moment of inertia about the x-axis (I _xx ) of 3,090 - 3,770 g·cm2 , a moment of inertia about the y-axis (I _yy ) of 4,936 - 5,383 g·cm2 , and a moment of inertia about the hosel axis (I _hh ) of 8,815 - 10,359 g·cm2 . The combined moment of inertia (i.e., the sum of the moment of inertia about the x-axis and the moment of inertia about the y-axis) of the exemplary club head (6766) for the club head CG is 8,023 - 9,153 g·cm2. The combined moment of inertia (i.e., the sum of the moment of inertia about the x-axis, the moment of inertia about the y-axis, and the moment of inertia about the hosel axis) of the exemplary club head (6766) about the club head CG and hosel axis is 16,841 - 19,237 g·cm2. am.

Referring further to Table 1 below, the exemplary club head having the adjustable weighting system (6766) has a depth-to-mass ratio of the club head CG depth to the mass of the first weight of 0.099 - 0.106 inches. Additionally, the exemplary club head having the adjustable weighting system (6768) has a first inertia-to-mass ratio of the club head combined moment of inertia relative to the head CG to the mass of the first weight of 446 - 508 cm2. Additionally, the exemplary club head having the adjustable weighting system (6766) has a head CG-to-mass ratio of the maximum head CG travel to the mass of the first weight of 0.015 inches/gram. Thus, the adjustable weighting system (6766) of the exemplary club head (6710) maximizes head CG depth, moment of inertia, and user-directed head CG travel without using large, heavy weights that require significant weight structures.

Weighting characteristics of an exemplary golf club head (6710) 1st weight position 1st position (toe) 2nd position (hill) 3rd position (center) W _CG - Circumference (10142) (inches) 0.19 0.22 0.21 W _CG - Face Centered (10138)
(inch) 4.19 3.26 4.41 CG _D (10130) (inch) 1.67 1.59 1.72 CG _H (10132)
(Head depth is (10120) inches above) 0.108 0.088 0.086 I _xx (g㎠) 3457 3090 3770 I _yy (g㎠) 5369 4936 5383 I _hh (g㎠) 10359 8815 10084 I _xx +I _yy (g㎠) 8826 8026 9153 I _xx +I _yy +I _hh (g㎠) 19185 16841 19237 CG _D / Mass (inches/grams) 0.104 0.099 0.106 I _xx +I _yy /mass(g㎠) 490 446 508 Max CG Movement/Mass (inches/grams) 0.015 0.015 0.015

The club head center of gravity is moved up to 0.27 inches by moving the weight between the first, second, and third individual attachment locations. The maximum center of gravity movement of the exemplary club head (6710) results in a total trajectory change of up to 12.4 yards (i.e., when moving the first weight from the first attachment location to the second attachment location or from the second attachment location to the first attachment location). Accordingly, moving the weight from the third attachment location to the second attachment location can change the trajectory of the golf ball by 6.2 yards to correct a slice or to cause a drumming. Additionally, moving the weight from the third attachment location to the first attachment location can change the trajectory of the golf ball by 6.2 yards to correct a hook or to cause a fade.

Article 1: As a golf club head:

A club head body having a toe end, a heel end positioned opposite to the toe end, a crown, a sole positioned opposite to the crown, a striking face, a rear end positioned opposite to the striking face, and a perimeter positioned at a connection between the sole and the crown extending from near the heel end to the toe end; and

An adjustable weighting system positioned on the sole, the perimeter, or a combination thereof.

, wherein said adjustable weighting system comprises:

A recess having an arched shape that follows the contour of the perimeter of the golf club head overall, the recess having a maximum depth of 0.25 inches;

A plurality of individual attachment locations positioned on the above concave portion; and

One or more weights each having a center of gravity, wherein each weight is configured to be attached to one of said plurality of individual attachment locations, and wherein each weight is configured to be moveable between said plurality of individual attachment locations so as to move the center of gravity of said club head.

including;

wherein said one or more weights are positioned within 0.50 inches of the perimeter of said club head when said weights are attached to at least one of said individual attachment locations;

wherein said one or more weights each have a center of gravity of said weight positioned inwardly from the outer contour of said club head by a distance of less than 0.125 inches;

A golf club head, characterized in that the combined moment of inertia of the club head with respect to the center of gravity of the club head, defined as the sum of the crown-sole moment of inertia and the heel-toe moment of inertia, is greater than 8,000 g·cm2.

Article 2: A golf club head according to Article 1, wherein the plurality of individual attachment locations are selected from the group consisting of a plurality of protruding bodies, a plurality of recesses, a plurality of openings, a plurality of notches, a plurality of tabs, a plurality of cutout areas, a plurality of ribs, a plurality of grooves, and a plurality of hooks.

Article 3: A golf club head according to Article 2, wherein the plurality of individual attachment locations include a plurality of threaded openings configured to receive fasteners.

Article 4: A golf club head according to Article 1, wherein the at least one weight comprises a first weight of 10 to 20 grams.

Article 5: A golf club head according to Article 1, wherein the adjustable weighting system further comprises a first attachment location positioned toward the rear end and the toe end, a second attachment location positioned toward the rear end and the heel end, and a third attachment location positioned centrally toward the rear end.

Article 6: A golf club head according to Article 5, characterized in that moving the first weight from the first attachment position to the second attachment position moves the center of gravity of the club head by a distance of at least 0.10 inches.

Article 7: A golf club head according to Article 6, wherein when the first weight is positioned at any of the first attachment position, the second attachment position, and the third attachment position, the center of gravity of the club head is greater than 1.65 inches.

Article 8: A golf club head according to Article 1, further comprising a depth-mass ratio defined by a ratio of the composite moment of inertia to the mass of the first weight, wherein the depth-mass ratio is greater than 0.060 inches/gram.

Article 9: A golf club head according to Article 1, wherein the concave portion includes a channel extending from near the toe end of the club head to near the heel end.

Article 10: A golf club head according to Article 9, characterized in that the depth of the channel varies from near the toe end of the club head to near the heel end.

Article 11: A golf club head according to Article 9, characterized in that the width of the channel changes from near the toe end of the club head to near the heel end.

Article 12: As a golf club head:

A club head body having a toe end, a heel end positioned opposite to the toe end, a crown, a sole positioned opposite to the crown, a striking face, a rear end positioned opposite to the striking face, and a perimeter positioned at a connection between the sole and the crown extending from near the heel end to the toe end; and

An adjustable weighting system positioned on the sole, the perimeter, or a combination thereof.

, wherein said adjustable weighting system comprises:

A recess extending in a V-shape and having a maximum depth of 0.25 inches;

A plurality of individual attachment locations positioned on the above concave portion; and

One or more weights each having a center of gravity, wherein each weight is configured to be attached to one of said plurality of individual attachment locations, and wherein each weight is configured to be moveable between said plurality of individual attachment locations so as to move the center of gravity of said club head.

including;

wherein said one or more weights are positioned within 0.50 inches of the perimeter of said club head when said weights are attached to at least one of said individual attachment locations;

wherein said one or more weights each have a center of gravity of said weight positioned inwardly from the outer contour of said club head by a distance of less than 0.125 inches;

A golf club head, characterized in that the combined moment of inertia of the club head with respect to the center of gravity of the club head, defined as the sum of the crown-sole moment of inertia and the heel-toe moment of inertia, is greater than 8,000 g·cm2.

Article 13: A golf club head according to Article 12, wherein the plurality of individual attachment locations are selected from the group consisting of a plurality of protruding bodies, a plurality of recesses, a plurality of openings, a plurality of notches, a plurality of tabs, a plurality of cutout areas, a plurality of ribs, a plurality of grooves, and a plurality of hooks.

Article 14: A golf club head according to Article 13, wherein the plurality of individual attachment locations include a plurality of threaded openings configured to receive fasteners.

Article 15: A golf club head according to Article 12, wherein the one or more weights comprise a first weight of 10 to 20 grams.

Article 16: A golf club head according to Article 12, wherein the adjustable weighting system further comprises a first attachment location located near the rear end, a second attachment location located at the center of the sole, and a third attachment location located near the heel end.

Clause 17: A golf club head in clause 16, characterized in that moving the first weight from the first attachment position to the second attachment position moves the center of gravity of the club head by a distance of at least 0.10 inches.

Article 18: A golf club head according to Article 17, wherein when the first weight is positioned at any of the first attachment position, the second attachment position, and the third attachment position, the center of gravity of the club head is greater than 1.65 inches.

Article 19: A golf club head according to Article 12, further comprising a depth-mass ratio defined by a ratio of the composite moment of inertia to the mass of the first weight, wherein the depth-mass ratio is greater than 0.060 inches/gram.

Article 20: A golf club head according to Article 12, wherein the concave portion includes a channel extending from near the toe end of the club head to near the heel end.

Article 21: A golf club head according to Article 20, wherein the depth of the channel varies from near the toe end of the club head to near the heel end.

Article 22: A golf club head according to Article 20, characterized in that the width of the channel changes from near the toe end of the club head to near the heel end.

Article 23: As a golf club head:

A club head body having a toe end, a heel end positioned opposite to the toe end, a crown, a sole positioned opposite to the crown, a striking face, a rear end positioned opposite to the striking face, and a perimeter positioned at a connection between the sole and the crown extending from near the heel end to the toe end; and

An adjustable weighting system positioned on the sole, the perimeter, or a combination thereof.

, wherein said adjustable weighting system comprises:

A recess having a rectangular shape extending from the toe end to the heel end, the recess having a maximum depth of 0.25 inches;

A plurality of individual attachment locations positioned on the above recessed portion;

cable;

A tensioner operable to increase or decrease the tension in said cable and positioned within the opening of said sole; and

One or more weights coupled to said cable, each having a center of gravity, each weight configured to be coupled to one of said plurality of individual attachment locations, each weight configured to be moveable between said plurality of individual attachment locations so as to move the center of gravity of said club head -

including;

wherein said one or more weights each have a center of gravity of said weight positioned inwardly from the outer contour of said club head by a distance of less than 0.125 inches;

A golf club head, characterized in that the combined moment of inertia of the club head with respect to the center of gravity of the club head, defined as the sum of the crown-sole moment of inertia and the heel-toe moment of inertia, is greater than 8,000 g·cm2.

Article 24: A golf club head according to Article 23, further comprising a first attachment location located near the toe end, a second attachment location located near the heel end, and a third attachment location located between the first attachment location and the second attachment location.

Article 25: A golf club head according to Article 23, wherein the tensioner comprises a fastener having a notch for receiving the cable.

Article 26: A golf club head according to Article 23, wherein the cable comprises a metal material selected from the group consisting of steel wire rope, aluminum wire rope, copper wire rope, tungsten wire rope, nickel wire rope, polymer-coated steel wire, and silver wire rope.

Clause 27: A golf club head according to clause 23, wherein the cable comprises a non-metallic material selected from the group consisting of baling twine, parachute yarn material, nylon, Kevlar, and polymer tweed.

Article 28: A golf club head according to Article 23, wherein said one or more weights include a through hole configured to receive said cable.

Article 29: A golf club head according to Article 23, wherein the tensioner is flush with the outer surface of the sole when the cable reaches maximum tension.

The replacement of one or more claimed elements constitutes a reconfiguration, not a modification. Furthermore, the advantages, other advantages, and solutions to problems have been described with respect to specific embodiments. However, the advantages, advantages, solutions to problems, and any element or elements that may cause or enhance any advantage, advantage, or solution should not be construed as a critical, necessary, or essential feature or element of any or all of the claims, unless such advantage, advantage, solution, or element is explicitly recited in the claim.

Because the rules of golf are subject to change from time to time (e.g., new rules may be adopted or old rules may be removed or amended by golf's governing body and/or governing body, such as the United States Golf Association (USGA), the Royal and Ancient Golf Club of St. Andrews (R&A), etc.), golf equipment relating to the devices, methods, and articles of manufacture described herein may or may not conform to the rules of golf at any given time. Accordingly, golf equipment relating to the devices, methods, and articles of manufacture described herein may be advertised, offered for sale, or sold as conforming or nonconforming golf equipment. The devices, methods, and articles of manufacture described herein are not limited in this regard.

While the above examples may be described with respect to wood-type golf clubs, the devices, methods, and articles of manufacture described herein may be applied to various types of golf clubs, including drivers, fairway woods, hybrids, crossovers, or any hollow-body golf club. Alternatively, the devices, methods, and articles of manufacture described herein may be applied to other types of sporting equipment, such as hockey sticks, tennis rackets, fishing rods, ski poles, and the like.

Additionally, the embodiments and limitations disclosed in this specification are not contributed to the public under the doctrine of dedication if such embodiments and/or limitations: (1) are not explicitly claimed in the claims; and (2) are or are potentially equivalent to expression elements and/or limitations of a claim under the doctrine of equivalents.

While the present invention has been described in detail with reference to certain preferred embodiments thereof, it will be understood that various modifications and variations may be made within the scope and spirit of the invention as described herein.

Claims (14)

In the golf club head,
A club head body having a toe end, a heel end positioned opposite the toe end, a crown, a sole positioned opposite the crown, a striking face, a rear end positioned opposite the striking face, and a perimeter positioned at a connection between the sole and the crown extending from near the heel end to near the toe end; and
An adjustable weighting system positioned on the sole, the perimeter, or a combination thereof.
, wherein said adjustable weighting system comprises:
A recess having an arched shape generally following the outline of the perimeter of the golf club, the recess including three individual attachment locations; and
A weight configured to be coupled to one of the three individual attachment locations, the weight being configured to be moveable between the three individual attachment locations so as to move the center of gravity of the club head.
Including,
When said weight is attached to at least one of said individual attachment locations, at least one weight is located within 0.50 inches of the perimeter of said club head;
A golf club head, wherein the combined moment of inertia of the club head about the center of gravity of the club head, defined as the sum of the crown-sole moment of inertia and the heel-toe moment of inertia, is greater than 8,000 g·cm2. A golf club head in claim 1, wherein the individual attachment location is selected from the group consisting of a protruding body, a recess, an opening, a notch, a tab, a cutout area, a rib, a groove and a hook. A golf club head in claim 2, wherein the individual attachment location includes a threaded opening configured to receive a fastener. A golf club head in claim 3, wherein the fastener comprises the same material as the body. A golf club head in claim 3, wherein the fastener includes a material having a lighter density than the body. A golf club head in claim 1, wherein the weight has a mass of 10 grams to 20 grams. A golf club head in claim 1, wherein the weight is flush with the outer contour of the sole. A golf club head in claim 1, wherein the adjustable weighting system further includes a first attachment location positioned toward the rear end and the toe end, a second attachment location positioned toward the rear end and the heel end, and a third attachment location positioned centrally toward the rear end. A golf club head in claim 5, wherein moving the weight from the first attachment position to the second attachment position moves the center of gravity of the club head by a distance of at least 0.10 inches. A golf club head in claim 1, wherein the center of gravity of the weight is located at a distance exceeding 2.5 inches from the geometric center of the striking face. A golf club head in claim 1, wherein the head CG depth exceeds 1.6 inches. A golf club head in claim 1, further comprising a depth-mass ratio defined as a ratio of a head CG depth to a mass of the weight, wherein the depth-mass ratio exceeds 0.060 inches/gram. A golf club head in claim 1, wherein the distance between adjacent individual attachment locations exceeds 0.4 inches. A golf club head in claim 1, further comprising an inertia-mass ratio defined as a ratio of a combined moment of inertia to the mass of the weight, wherein the inertia-mass ratio exceeds 400 ㎠.