KR20240008261A - Improved putter grip to help with golf club alignment - Google Patents

Abstract

A golf club fitting device and grip are provided to assist in golf club alignment. A golf club fitting device may be attached to a golf club and provide fitting information including an effective lie angle and an effective loft angle. The angle indicator is positioned at a predetermined angle relative to the shaft axis of the golf club so that it is in a neutral position when the golf club is in its normal address position. A grip is provided that can be attached to a golf club shaft such that a butt end and/or a distal end of the grip has a surface that aids golf club alignment. The grip is provided with a front portion having edges that assist in aligning the golf club.

Description

IMPROVED PUTTER GRIP TO HELP WITH GOLF CLUB ALIGNMENT}

Cross-reference to related applications

This application is a continuation-in-part of U.S. Patent Application No. 17/718,085, filed on April 11, 2022, which is a continuation-in-part of U.S. Patent Application No. 16/693,036, filed on November 22, 2019 (currently U.S. Patent No. No. 11,173,370), a continuation-in-part of U.S. Patent Application No. 17/167,335, filed February 4, 2021, which applications are incorporated herein by reference in their entirety. This application is also a continuation-in-part of U.S. Patent Application No. 29/843,655, filed June 22, 2022, which is incorporated herein by reference in its entirety.

field of invention

The present invention relates to golf club fitting, and more specifically to devices for properly fitting a putter.

The point of golf is to get the ball into the hole in the fewest strokes possible. Whether the stroke is a 300-yard drive or a 1-foot putt, all strokes count equally on the scorecard. Not everyone can hit the ball 300 yards, but everyone can hit the putt 1 foot. Therefore, one of the best ways to improve your golf score is to improve your putting.

Practice is one way to improve your putting, but it's not the only way. It is also possible to improve your putting by ensuring that your putter is properly fitted and correctly aligned.

Even if the putting stroke is technically perfect, if the putter is not properly fitted and/or cannot be aimed at the intended target, the golfer will have a hard time putting the putt in the hole. There are many ways to customize a putter for a golfer.

1 illustrates the components of a conventional putter. As shown in FIG. 1 , the putter 100 includes a striking face 101, a sole 102, and a hosel or neck 103 for connecting the putter head 104 to the shaft 105.

Figure 1 illustrates several different ways a putter can be oriented at address. Note that identical reference numbers are omitted. Putter 100 is shown in a forward tilted or delofted position (A), a neutral address position (B), and a backward tilted position (C).

Loft is the angle between the striking face and a vertical plane perpendicular to the floor plane (G) when the putter is held in its normal address position. Effective loft is the angle between the hitting face and a vertical plane perpendicular to the floor plane (G) at the actual address location. Accordingly, while the loft of putter 100 is static based on the geometry of the putter, the effective loft may change depending on how putter 100 is tilted when addressing the ball.

A putter should have some effective loft, typically around 4°, to most effectively roll a golf ball. This angle is enough to lift the ball slightly off the floor and allow it to roll quickly. Each of the putters 100 shown by (A), (B), and (C) has a loft of approximately 4 degrees. However, each of the putters 100 shown by (A), (B), and (C) has a different effective loft. Since the putter 100 shown in (B) is at a general address position, the effective loft (α _B ) is equal to 4°, which is the loft of the putter.

If the effective loft of the putter is too low, the putted ball will be propelled downward toward the floor, as shown by (A) in FIG. 1. The putter 100 shown by (A) has an effective loft (α _A ) of approximately -1°. This causes the putted ball to bounce and bounce substantially, making it difficult to hit the ball consistently in distance and/or direction.

If the effective loft of the putter is too high, the putted ball will be propelled into the air, possibly with backspin, as shown by (C) in Figure 1. The putter 100 shown by (C) has an effective loft (α _C ) of approximately 9°. These conditions also make it difficult to hit the ball consistently in distance and/or direction.

It is important to use a putter with the appropriate loft because the loft fraction can have a big impact on the way a putt rolls. However, it is difficult to accurately identify the appropriate loft for a putter without special equipment.

2 illustrates additional features of a conventional putter. As shown in Figure 2, putter 100 also includes a heel 106, toe 107, and lie angle.

The lie angle is the angle between the center of the shaft 105 and the floor plane (G) when the putter 100 is touching the sole at a typical address position. The effective lie angle is the angle between the center of the shaft and the floor plane (G) when the putter is held at the actual address position. Golf rules stipulate that the putter's lie angle must be less than 80 degrees. As with loft, it is important for golfers to use a putter with an appropriate lie angle.

Figure 2 illustrates the effect of lie angle and effective lie angle on a putted golf ball by showing several different ways a putter can be oriented at address. As shown in FIG. 2, the putter 100 has a position (A) where the toe 107 is higher than the heel 106, a neutral address position (B), and a position where the heel 106 is higher than the toe 107 (A). It is shown in C).

When putting a ball using the putter 100 with the lie angle too upright (A), the toe 107 of the putter 100 will be oriented higher than the heel at the time of impact as shown in (A). . The effective lie angle (β _A ) of the putter 100 shown in (A) is about 65°, which is about 5° smaller than the actual lie angle of the putter 100. In this position, the loft of putter 100 will cause the ball to deflect to the left of where the putter is aiming. As shown in Figure 2, the aiming line is indicated by a solid black line and the arrow indicates the position where the ball is actually hit.

When putting a ball using a putter with the correct lie angle (B), the lie angle and the effective lie angle are the same. The effective lie angle (β _B ) of the putter 100 shown in (B) is about 70°, which is the same as the lie angle. The putter 100 shown by (B) is oriented substantially parallel to the floor plane G at impact and the ball will roll in the direction the putter is aiming.

If a putter is putted with a lie angle (C) that is too flat, the putter will have its toe 107 oriented lower than its heel 106 at impact. The effective lie angle (β _C ) of the putter 100 shown in (C) is about 75°, which is about 5° larger than the actual lie angle of the putter 100. In this position, the loft of the putter will cause the ball to go to the right of where the putter is aiming.

Therefore, it is important to use a putter with an appropriate lie angle because the lie angle fraction can greatly affect the way the putt rolls. However, it is difficult to accurately identify the appropriate lie angle without special equipment.

Figure 3 illustrates the ideal path the putter head should take during a putting stroke. It is important to swing the putter in the proper manner. Since all putters are required by rule to have a lie angle, as a result, the ideal putting stroke is not a pendulum stroke, but an arc-shaped path in which the putter head 104 is influenced by the putter's lie angle off the target line 311. It follows (310). 3 also shows the “toe” of the putter illustrating how the putter head 104 opens and closes like a gate by remaining perpendicular to the arcuate path 310 rather than perpendicular to the target line 311 during the stroke. A “flow” 312 is shown. The arcuate path 310 can also be promoted by the eye line 313 being internal to the target line 311 . Eye line 313 corresponds to a vertical plane extending from the eye downward and to the ground plane G. Swinging the putter without a proper arc path requires correction and adjustment of the putting stroke, making it difficult to hit the putt accurately.

It is also very important to properly aim the putter when putting. Even if a putter has the perfect loft and lie angle and swings along a perfect arc path, it will still be difficult to putt if the putter is not aimed properly. It is not uncommon for a golfer to aim the putter a few degrees right or left of the intended target. The longer the putt, the more this aiming error affects the putt result. For example, aiming just 1 degree to the right or left of a target 10 feet away is equivalent to missing the target by 2.1 inches. Since the regulation golf cup is only 4.25 inches wide, this one-degree error is enough to be the difference between making a putt for par and missing the putt for bogey.

Therefore, a system for appropriately fitting and aiming a putter is required. The present invention provides such a system and fitting method.

The systems, methods, and devices described herein have innovative aspects, none of which are solely responsible for essential or desirable properties. Without limiting the scope of the claims, some of the advantageous features will now be summarized.

The present technology relates generally to club fitting devices and methods of fitting golf clubs, and more specifically to devices and methods related to putter type golf clubs. More specifically, the present invention relates to systems and methods that allow a player to adjust the putter or the orientation of the putter to achieve an optimal setup position. By improving setup position, players will essentially improve their putting efficiency.

One aspect of the invention relates to a fitting device for golf clubs. The fitting device includes: a first device body having a first opening formed in the first device body to receive a shaft of the golf club; a first angle indicator coupled to the first device body and exposed on an upper surface of the first device body; a second angle indicator coupled to the first device body and exposed on the upper surface of the first device body; and a stroke plane indicator coupled to the first device body and exposed through a lower surface of the first device body.

According to an embodiment, the first opening may be formed in the first device body at a first predetermined angle with respect to a normal to the lower surface of the device.

The first predetermined angle may be between about 0° and about 30° relative to the normal of the lower surface of the first device body.

The first predetermined angle may preferably be between about 15° and about 25° relative to the normal of the lower surface of the first device body.

The first predetermined angle is most preferably about 20° relative to the normal of the lower surface of the first device body and corresponds to the lie angle of the golf club.

A first angle indicator may be configured to measure a change corresponding to an effective lie angle of the golf club, wherein the effective lie angle of the golf club is measured between the shaft of the golf club and the floor plane when the golf club is held in the address position. is the angle of

A second angle indicator may be configured to measure a corresponding change in the effective loft angle of the golf club, wherein the effective loft angle of the golf club is the difference between the striking face and bottom of the golf club when the club is held in the address position. It is the angle between the normals to the plane.

The fitting device may further include a second opening in the first device body formed at the first predetermined angle, the second opening being configured to receive the stroke plane indicator therein.

The stroke plane indicator can include a collimated light source, which when received within the second aperture can emit collimated light.

The fitting device may include a fastener that can be secured through a lateral surface of the first device body adjacent the first opening.

A fastener may be fixable through the lateral surface of the first device body at an angle complementary to the first predetermined angle.

Another aspect of the invention relates to a system for fitting a putter, comprising: a body, a striking face; a rear surface opposite the striking face; heel; a toe opposite the heel; brush; an upper surface opposite the sole; and a putter having a shaft attached to the golf club head. The system further includes a fitting device, the fitting device comprising: a first device body; a first opening formed in the first device body to receive the shaft of the putter, the first opening being formed at a first predetermined angle; a fastener configured to apply a force to the putter shaft within the first opening, the fastener being capable of being secured through a lateral surface of the first device body adjacent the first opening; a first angle indicator coupled to the first device body and exposed on an upper surface of the first device body, the first angle indicator being configured to define an effective lie angle of the putter and a definition of the putter when the putter is held in the address position; configured to measure the difference between a lie angle, wherein the effective lie angle of the putter is the angle between the center of the shaft and the floor plane when the putter is held in the address position; a second angle indicator coupled to the first device body and exposed on the upper surface of the first device body, wherein the second angle indicator determines an effective loft angle of the putter when the putter is held in the address position and an effective loft angle of the putter when the putter is held in the address position; wherein the effective loft angle of the putter is the angle between the striking face and the normal to the floor plane when the putter is held in the address position; a second opening formed in the first device body at an angle to the first predetermined angle, the second opening configured to receive a collimated light source therein and to expose the collimated light source through a lower surface of the first device body -; and a first recess formed in the lower surface of the first device body, the first recess configured to receive the collimated light source; and a reflective member removably attached to the striking face. In a first configuration, the fitting device is coupled to the shaft of the putter such that the collimated light source emits light in a direction parallel to the shaft toward the floor plane, and in a second configuration, the collimated light source is coupled to the shaft of the putter. Light is emitted in a direction parallel to the aiming line toward the reflective member.

The first predetermined angle may be between about 0° and about 30° relative to a normal to the lower surface of the first device body.

The first predetermined angle may be between about 15° and about 25° relative to the normal of the lower surface of the first device body.

The first predetermined angle may be approximately 20° relative to the normal of the lower surface of the first device body and corresponds to the lie angle of the putter.

A fastener may be fixable through the lateral surface of the first device body at an angle complementary to the first predetermined angle.

According to another aspect of the present invention, a method of fitting a putter with a fitting device includes attaching the fitting device to a shaft of the putter; measuring, by the fitting device, at least one of an effective lie angle, an effective loft angle, and a stroke plane of the putter when the putter is held in an address position; and modifying at least one of the putter and the address location to adjust the at least one of the effective lie angle, the effective loft angle, and the stroke plane.

An effective loft angle may be measured with a first angle indicator exposed through an upper surface of the fitting device, and an effective lie angle of the putter may be measured with a second angle indicator exposed through an upper surface of the fitting device, The stroke plane is measured with a collimated light source exposed through the lower surface of the fitting device to emit a collimated light beam in a direction parallel to the shaft.

A method of fitting a putter includes removing the fitting device from the shaft; positioning the fitting device on a floor plane; positioning the collimated light source on the fitting device to emit a collimated light beam in a direction substantially parallel to the floor plane; Aiming the putter toward the collimated light source such that the collimated light beam contacts a reflective surface disposed on the striking face of the putter; measuring the position of a beam reflected from the reflective surface; and modifying at least one of the putter and the address location to adjust the location of the beam reflected from the reflective surface.

According to another aspect of the invention, a golf club comprising a shaft forming a shaft axis, a golf club head connected to a first end of the shaft, and a grip connected to a second end of the shaft opposite the first end. A golf club fitting device includes: a second device body having a lower surface, an upper surface opposite the lower surface, and a lateral surface connecting the upper surface and the lower surface; and an angle indicator coupled to the second device body and exposed on the upper surface of the second device body; The second device body is configured to be coupled to the grip such that the lower surface of the second device body contacts a butt end of the grip, and the angle indicator is disposed at a predetermined angle relative to the shaft axis to control the golf club. When in this normal address position the angle indicator is in the neutral position.

According to another aspect of the invention, a method of fitting a putter with a fitting device includes attaching the fitting device to a grip of the putter; measuring, by the fitting device, an effective lie angle and an effective loft angle of the putter when the putter is held in an address position; and modifying at least one of the putter and the address location to adjust at least one of the effective lie angle and the effective loft angle.

According to another aspect of the invention, a golf club comprising a shaft forming a shaft axis, a golf club head connected to a first end of the shaft, and the grip connected to a second end of the shaft opposite the first end. The grip includes: the grip having a butt end furthest from the golf club head; and a distal end opposite the butt end; The butt end and/or the distal end of the grip are positioned relative to the shaft axis such that the top surface of the butt end and/or the bottom surface of the distal end are substantially parallel to the floor plane when the golf club is in its normal address position. inclined with respect to a vertical plane.

According to another aspect of the invention, a grip having the butt end and/or the distal end inclined with respect to the plane perpendicular to the shaft axis can be combined with a device body, A lower surface is coupled to the grip such that it contacts the butt end of the grip, and the upper surface of the device body has an angle indicator positioned on the upper surface of the device body when the golf club is in a normal address position. is substantially parallel to the top surface of the butt end of the grip so that it is in a neutral position.

According to another aspect of the invention, a golf club comprising a shaft forming a shaft axis, a golf club head connected to a first end of the shaft, and the grip connected to a second end of the shaft opposite the first end. The grip includes: the grip having a butt end furthest from the golf club head, a distal end opposite the butt end, a front portion, a back portion, a left portion, and a right portion; comprising the anterior portion, the posterior portion, the left portion and the right portion extending along the length of the grip from the butt end to the distal end; the front portion includes a left edge and a right edge extending the length of the grip, the left edge and the right edge being symmetrical to each other along a centerline of the front portion; Going from the butt end of the grip to the distal end, the left edge and the right edge taper away from the centerline of the front portion and then toward the centerline of the front portion near the distal end of the grip. Tapered again; A plane including the right edge and the left edge may be formed parallel to the target line at a general address location.

These and other features and advantages of the present invention will become apparent from the following description of the present invention as illustrated in the accompanying drawings. The accompanying drawings, which are incorporated into and form a part of this specification, also serve to illustrate the principles of the invention and to enable those skilled in the art to make and use the invention.
1 shows putters with varying degrees of shaft-lean, which modifies the effective loft of the putter.
2 shows putters with varying degrees of shaft lean, which modify the effective lie angle of the putter.
Figure 3 shows an arc-shaped putting stroke.
Figure 4 shows an exploded perspective view of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 5 shows a perspective view of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 6 shows an overhead view of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 7 shows a side view of a golf club fitting device attached to a shaft in accordance with an exemplary embodiment of the present invention.
8 shows an overhead view of a golf club fitting device attached to a right-handed golf club in accordance with an exemplary embodiment of the present invention.
9 shows an overhead view of a golf club fitting device attached to a left-handed golf club in accordance with an exemplary embodiment of the present invention.
Figure 10 shows a side view of a golf club fitting device attached to a golf club according to an exemplary embodiment of the present invention.
Figure 11 shows a front view of a golf club fitting device attached to a golf club according to an exemplary embodiment of the present invention.
Figure 12 shows an exploded perspective view of the bottom of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 13 shows a side view of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 14 shows a side view of a putter with a reflective member attached for use with a golf club fitting device according to an embodiment of the present invention.
Figure 15 shows a flow chart of a method of fitting a putter with a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 16 shows a side view of a golf club fitting device attached to a golf club according to an exemplary embodiment of the present invention.
Figure 17 shows a side view of a golf club fitting device attached to a grip according to an exemplary embodiment of the present invention.
Figure 18 shows a perspective view of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 19 shows a flow chart of a method of fitting a putter with a golf club fitting device according to an example embodiment of the present disclosure.
Figure 20 shows a side view of a grip attached to a golf club according to an exemplary embodiment of the present invention.
Figure 21 shows a side view of a grip according to an exemplary embodiment of the present invention.
Figure 22 shows a side view of a golf club fitting device attached to a golf club according to an exemplary embodiment of the present invention.
Figure 23 shows a side view of a golf club fitting device attached to a grip according to an exemplary embodiment of the present invention.
Figure 24 shows a perspective view of a golf club fitting device according to an exemplary embodiment of the present invention.
Figure 25 shows a perspective view of a grip according to an exemplary embodiment of the present invention.
Figure 26 shows a front view of a grip according to an exemplary embodiment of the present invention.
Figure 27 shows a top view of a grip according to an exemplary embodiment of the present invention.
Figure 28 shows a top view of a grip according to an exemplary embodiment of the present invention.
Figure 29 shows a top view of a grip according to an exemplary embodiment of the present invention.

In the following detailed description, reference is made to the accompanying drawings, which form a part of this disclosure. The exemplary embodiments described in the detailed description, drawings and claims are not intended to be limiting. Other embodiments may be utilized, and other changes may be made without departing from the spirit or scope of the subject matter presented herein. As generally described herein and illustrated in the drawings, aspects of the present disclosure can be arranged, replaced, combined and designed in a wide variety of different configurations, all of which are expressly contemplated and constitute a part of the present disclosure. You will easily understand that it can be formed. For example, a system or device can be implemented or a method can be practiced using any number of the aspects described herein. Additionally, such systems or devices may be implemented or such methods may be practiced using other structures, functions, or structures and functionality in addition to or other than one or more aspects described herein. Variations and further modifications of the features of the invention illustrated herein, and further applications of the principles of the invention as illustrated herein, will occur to those skilled in the art and those in possession of this disclosure. must be considered within the scope of.

Except for operating examples, or unless otherwise explicitly specified, all numerical ranges, such as those for amounts of material, moment of inertia, position of center of gravity, loft and bounce angles, power spectrum, frequency, etc., in the following parts of the specification; Quantities, values, and percentages may be read as if they were prefaced with the word “about,” even though the term “about” may not explicitly appear as a value, quantity, or range. Accordingly, unless otherwise indicated, the numerical parameters set forth in the following specification and appended claims are approximations that may vary depending on the desired properties sought to be achieved by the invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.

Notwithstanding the fact that the numerical ranges and parameters representing the broad scope of the invention are approximations, the numerical values set forth in specific examples are reported as accurately as possible. However, any numerical value inherently contains certain errors that inevitably arise due to the standard deviation found in each test measurement. Moreover, when various ranges of numerical ranges are described herein, it is contemplated that any combination of these values, including the recited values, may be used.

When describing the present technology, the following terminology may be used: The singular forms "a", "an" and "the" include plural referents, unless the context clearly dictates otherwise. Thus, for example, a reference to an item includes a reference to one or more items. The term “plural” refers to two or more items. The term "substantially" does not necessarily mean that the recited properties, parameters or values will be achieved exactly, but that deviations or variations, including, for example, tolerances, measurement errors, measurement accuracy limits and other factors known to those skilled in the art, are not required. This means that the characteristic can occur in an amount that does not preclude the effect it is intended to provide. For convenience, multiple items may be presented in a common list. However, these lists should be interpreted as if each member of the list were identified as a separate and unique member. Accordingly, no individual member of this list should be construed as effectively equivalent to any other member of the same list based solely on its designation in a common group without indication to the contrary. Moreover, when the terms “and” and “or” are used with a list of items, they should be construed broadly in that any one or more of the listed items may be used alone or in combination with other listed items. The term "alternatively" means a choice between two or more alternatives and, unless the context clearly indicates otherwise, is not intended to limit the choice to only the listed alternatives or to only one of the listed alternatives at a time. no.

The features of the present disclosure will become more fully apparent from the following description and appended claims taken in conjunction with the accompanying drawings. After considering this description, and especially after reading the section entitled “Detailed Description,” you will understand how the illustrated features serve to illustrate certain principles of the disclosure.

4 to 7, an embodiment of a golf club fitting device 400 according to the present invention is disclosed. FIG. 4 is an exploded view of the golf club fitting device 400, FIG. 5 is a perspective view of the golf club fitting device 400, FIG. 6 is an overhead view of the golf club fitting device, and FIG. 7 is a golf club fitting device 400. ) is a side view.

As illustrated in FIGS. 4 and 5, the golf club fitting device 400 includes a first device body 401, a first opening 402; First angle indicator 403, second angle indicator 404, one or more second openings 405, one or more third openings 406, stroke plane indicator 407, fastener 408, and first It may include a groove 410.

As illustrated in FIG. 5 , first opening 402 is formed through upper surface 412 and lower surface 413 of golf club fitting device 400 and lateral surface of golf club fitting device 400 ( It includes a slot portion 402a formed through 414 and an arcuate portion 402b connected to the distal end of the slot portion 402a.

Referring to Figure 6, the overhead of the golf club fitting device 400 is shown to better illustrate the relative dimensions. According to an embodiment of the present invention, the golf club fitting device 400 may have a width (W) of about 2.0 inches to 5.0 inches. Preferably, the width (W) of golf club fitting device 400 is between about 2.5 inches and about 3.5 inches. Golf club fitting device 400 may have a length (L) of about 1.5 inches to about 4.0 inches. Preferably, the length (L) of golf club fitting device 400 is between about 2.0 inches and about 3.0 inches.

Slot portion 402a of first opening 402 may have a width W1 of about 0.5 inches to about 1.0 inches to accommodate insertion of a shaft. Preferably, slot portion 402a has a width W1 that is between about 0.5 inches and about 0.75 inches.

The arcuate portion 402b may have a greater width than the slot portion 402a to facilitate proper alignment of the golf club fitting device 400 on the shaft. According to an embodiment of the present invention, the arcuate portion 402b of the first opening 402 may have a width W2 that is approximately 0.75 inches to 1.5 inches. Preferably, the arcuate portion 402b has a width W2 that is about 0.75 inches to 1.0 inches.

The second opening 405 may have a diameter D of about 0.1 inch to about 1.0 inch. Preferably, the diameter (D) of the second opening 405 is from 0.25 inches to about 0.75 inches.

According to an embodiment of the present invention as shown in FIG. 7, the golf club fitting device 400 may have a height H of about 0.1 inches to about 1.5 inches. Preferably, the height (H) of golf club fitting device 400 is between about 0.25 inches and about 1.0 inches. Most preferably, the height (H) of the golf club fitting device is about 0.5 inches.

The first device body 401 of the golf club fitting device 400 may be formed of any suitable material. Preferably, the first device body 401 of the golf club fitting device 400 is formed of a lightweight material so as not to unduly affect the balance of the golf club when mounted. The first device body 401 of the golf club fitting device 400 may be formed of metal, wood, plastic, or a composite material. According to an exemplary embodiment, the first device body 401 of the golf club fitting device 400 may be formed of anodized 6061 aluminum.

Referring to FIG. 7 , the golf club fitting device 400 is shown from the side to clearly illustrate the specific aspect of the first opening 402 . As shown in FIG. 7 , both the slot portion 402a and the arcuate portion 402b of the first opening 402 are at a first angle relative to the normal to the lower surface 413 of the golf club fitting device 400. It can be formed as θ). The first angle θ ensures that the golf club fitting device 400 is substantially parallel to the floor plane G when attached to the shaft 105 of a putter held in a general address position. The first angle θ may range from about 0° to about 30° with respect to the normal to the lower surface 413 of the golf club fitting device 400. Preferably, the first angle θ may range from about 15° to about 25° relative to the normal to the lower surface 413 of the golf club fitting device 400. Most preferably, the first angle θ is about 20° relative to the normal to the lower surface 413 of the golf club fitting device 400 and may correspond to the lie angle α of the putter.

5 and 7, fastener 408 protrudes into first opening 402 and applies a force to secure shaft 105 within arcuate portion 402b of first opening 402. It is configured to do so. According to an embodiment of the present invention, the fastener 408 may be a threaded fastener that mates with a corresponding threaded portion formed on the golf club fitting device 400. Alternatively, fastener 408 may friction fit into a corresponding opening formed in golf club fitting device 400.

According to an embodiment, as shown in FIG. 7 , fastener 408 may pass through lateral surface 414 of golf club fitting device 400 at an angle complementary to the first angle θ. That is, the central axis of the fastener 408 may extend in a direction substantially perpendicular to the inclined surface of the first opening 402. Alternatively, the fastener 408 may pass through the lateral surface 414 of the golf club fitting device 400 at an angle that does not complement the first angle θ. For example, as shown in FIG. 5 , the fastener 408 is positioned at an angle substantially perpendicular to the lateral surface 414 of the golf club fitting device 400. (414) can be passed.

As illustrated in FIG. 7 , when the shaft is secured within the golf club fitting device 400, the fastener 408 causes the shaft 105 to contact the inclined surface of the arcuate portion 402b opposite the fastener 408. A force is applied to the shaft 105 to bring it into contact. The first angle θ of the surface of the arcuate portion 402b ensures that the golf club fitting device 400 is substantially parallel to the floor plane G when secured to the shaft 105.

Referring again to FIGS. 4 and 5 , second opening 405 is formed through upper surface 412 and lower surface 413 of golf club fitting device 400. The second opening 405 receives the stroke plane indicator 407 such that the stroke plane indicator 407 is secured within the second opening 405 and is exposed through the lower surface 413 of the golf club fitting device 400. It is configured to do so. Stroke plane indicator 407 may be secured within one of the second openings 405 via any number of known fastening methods. For example, the stroke plane indicator 407 may include a portion having an increased diameter greater than the diameter of the second opening 405 such that the stroke plane indicator 407 cannot completely pass through the second opening 405. there is. Alternatively, the stroke plane indicator 407 can have a tapered diameter and the second opening 405 can have a correspondingly tapered diameter or a uniform diameter that prevents the stroke plane indicator 407 from completely passing through. there is.

The second opening 405 may be formed at a first angle θ, wherein the axis passing through the center of the stroke plane indicator 407 is substantially parallel to the shaft angle of the putter fixed within the first opening 402. It can be positioned to intersect the floor plane (G) in front of the striking face. According to embodiments, stroke plane indicator 407 may be a collimated light source, such as from a laser (i.e., solid-state laser, laser pointer) of minimal power, typically less than about 3 mW. The axis passing through the center of the stroke plane indicator 407 may be the beam of the laser.

According to an embodiment of the present invention, the golf club fitting device 400 may include two second openings 405 to accommodate both a right-handed putter and a left-handed putter. 8 and 9, one of the second openings 405 is set to the left of where the shaft contacts the arcuate portion 402b of the first opening 402, and the other of the second openings is set to the right of where the shaft contacts the arcuate portion 402b of the first opening 402.

As shown in FIG. 8 , when the golf club fitting device 400 is attached to a right-handed putter, the right-handed putter's shaft 105 is secured within the first opening 402 and the stroke plane indicator 407 is The shaft 105 is secured to the second opening 405 located to the left of where it contacts the arcuate portion 402b of the first opening 402.

As shown in FIG. 9 , when the golf club fitting device 400 is attached to a left-handed putter, the left-handed putter's shaft 105 is secured within the first opening 402 and the stroke plane indicator 407 is positioned on the shaft ( 105) is secured to the second opening 405 located to the right of where it contacts the arcuate portion 402b of the first opening 402.

8-11, regardless of whether the golf club fitting device 400 is attached to a right-handed or left-handed golf club, the axis passing through the center of the stroke plane indicator 407 passes through the first opening ( 402) and intersects the bottom plane G in front of the striking face at or near the center of the striking face. This relationship is independent of the height at which golf club fitting device 400 is attached to the shaft. Various geometries of the putter shaft and putter neck/hosel may result in the axis passing through the center of the stroke plane indicator 407 intersecting the floor plane G at a slightly different location, but the advantages of the present invention are as described below. You must understand that they will remain together.

Referring again to Figures 4-6, golf club fitting device 400 may include one or more angle indicators. According to an embodiment, the golf club fitting device 400 includes a first angle indicator 403 and a second angle indicator 404. As shown in FIG. 6, the first angle indicator 403 and the second angle indicator 404 may be arranged to be substantially orthogonal to each other. The first angle indicator 403 may be positioned parallel to the leading edge of the striking face of the putter when the shaft of the putter is secured within the first opening 402. The second angle indicator 404 can be positioned parallel to the aiming line when the putter shaft is secured within the first opening 402.

According to an embodiment, the first angle indicator 403 and the second angle indicator 404 may be secured within the third opening 406 to be exposed through the upper surface 412 of the golf club fitting device 400. The third opening 406 may be formed partially or entirely through the first device body 401 of the golf club fitting device 400. Preferably, the third opening 406 is formed entirely through the first device body 401 of the golf club fitting device 400. The first angle indicator 403 and the second angle indicator 404 are connected from above through the upper surface 412 of the golf club fitting device 400 or from below through the lower surface 413 of the putter fitting device 400. It may be secured within the third opening 406. Preferably, the first angle indicator 403 and the second angle indicator 404 are in a press fit or snap fit through the lower surface 413 of the golf club fitting device 400 into the third opening 406. can be fixed by

8 and 9, when the golf club fitting device 400 is mounted on a right-handed or left-handed putter, the first angle indicator 403 may indicate an effective lie angle of the putter, and the second angle indicator 403 may indicate an effective lie angle of the putter. 404 may represent the effective loft of the putter.

6 , markings 409 may be formed on the first device body 401 of the golf club fitting device 400 proximate the first angle indicator 403 and the second angle indicator 404. . Markings 409 may be etched into, protrude from, or drawn onto the first device body 401 of the golf club fitting device 400 in any suitable manner. It can be formed on (401). The markings 409 preferably indicate the effective lie angle and the effective loft angle as fractions of a degree over a range of more than 10 degrees. Alternatively, the markings 409 may be formed directly on the first angle indicator 403 and the second angle indicator 404.

Moreover, the first angle indicator 403 and the second angle indicator 404 may be provided in a number of different configurations such that the scale and extent of the markings 409 may differ depending on the accuracy required for a particular fit. For example, as a golfer's skill level changes, different first angle indicators 403 and/or second angle indicators 404 may be utilized that measure a smaller or larger overall angular range, thus marking (409) can represent larger or smaller increments, respectively.

For example, if the putter shaft 105 is secured within the first opening 402 and the putter shown in FIG. 8 is tilted to a more vertical orientation, or “more upright,” the first angle indicator 403 will This will indicate the angle change. Similarly, if the putter shown in FIG. 7 is tilted in a downward direction, or “flatter,” first angle indicator 403 will indicate this angle change.

Likewise, if the putter shaft is secured within the first opening 402 and the putter shown in FIG. 7 is tilted to the left or "pushed forward," the second angle indicator 404 will indicate this change in angle. Similarly, if the putter shown in FIG. 8 is tilted to the right or “tilted backwards,” the second angle indicator 404 will indicate this change in angle.

Referring to FIG. 9, the golf club fitting device 400 is shown attached to a left-handed putter. The shaft of the left-handed putter is fixed within the first opening 402 and the first angle indicator 403 and the second angle indicator 404 are used to indicate the effective lie angle and the effective loft angle, respectively. In this configuration, the effective lie angle can be measured on the same scale as the right-handed configuration, while the effective loft angle is measured using a second set of markings due to the opposite loft angles of right- and left-handed clubs.

The first angle indicator 403 and the second angle indicator 404 include bubble level, tilt sensor, tilt indicator, slope meter, slope gauge, draft meter, inclinometer, level gauge, level meter, curved gas fill inclinometer, and curved gas fill inclinometer. It can be any angle indicator, including but not limited to a type fluid filled inclinometer. Preferably, the first angle indicator 403 and the second angle indicator 404 are curved vial-shaped fluid-filled inclinometers with a radius of curvature and filled with a damping fluid that ensures a smooth response angle indication. The radius of curvature of the inclinometer affects the measuring range of the inclinometer. Accordingly, the curvature can be adjusted to a desired range, for example based on the player's skill.

If the inclinometer includes bubble indicators, the ends of the first angle indicator 403 and the second angle indicator 404 are oriented lower than their central portions. Conversely, if the inclinometer includes a ball indicator, the ends of the first angle indicator 403 and the second angle indicator 404 are oriented higher than the central portion.

10 and 11, the golf club fitting device 400 according to the present invention is illustrated as being installed on the shaft 105 of a golf club. FIG. 10 is a front view of a golf club fitting device 400 installed according to an embodiment of the present invention, and FIG. 11 is a side view of the golf club fitting device 400.

As a result of the unique structure of golf club fitting device 400, golf club fitting device 400 can be installed on any straight portion of shaft 105. As shown in Figures 9 and 10, the golf club fitting device is installed progressively lower on each of the golf clubs (A), (B), and (C). However, despite the different configuration, the axis of stroke path indicator 407 intersects floor plane G at substantially the same location. Putters can include different types of shafts with different bending profiles; However, note that regardless of the bending profile of the shaft or the installation location on the shaft, the axis of stroke path indicator 407 will intersect floor plane G at substantially the same location for a given putter. If the putter is held in such a way that it moves away from the proper address position, the intersection point may also be moved slightly, providing an additional way in which golf club fitting device 400 can help ensure that the putter is properly fitted.

12 and 13, golf club fitting device 400 is shown in a second configuration. In a second configuration, golf club fitting device 400 is disposed on a floor surface and a collimated light source is attached to the club fitting device so that the axis passing through its center radiates substantially parallel to floor plane G. The collimated light source may be the stroke plane indicator 407 or it may be a different collimated light source. Preferably, the collimated light source is a stroke plane indicator 407 and illuminates the lower surface 413 of the golf club fitting device 400 when the golf club fitting device 400 is inverted as shown in FIGS. 12 and 13. It is disposed within the formed first groove 410.

Referring to Figure 14, the light emitted by stroke plane indicator 407 can be directed toward the striking face of the putter to ensure proper alignment of the putter with respect to the putting line. Stroke plane indicator 407 is oriented perpendicular to the striking face of putter head 104. Putter head 104 includes a reflective surface 1401 attached to striking face 101. The incident beam 1301 emitted by the stroke plane indicator 407 strikes the reflective surface 1401 and moves away from the reflective surface 1401 as a reflected beam 1302 to an indexed reference device, such as an opaque surface, such as a ruler. or directed back towards paper, a grid, such as graph paper, or a light detector, such as a charge-coupled device (“CCD”). Reflective surface 1401 can be any reflective surface, but is preferably a mirror or high gloss glass fused silica. Spacers or shims can also be used to orient the reflective surface at an appropriate angle for return of the collimated light source to the reference device.

When a golfer addresses the golf ball before making a putting stroke, the reflected beam 1302 is directed back to the reference device. The position of the reflected beam 1302 on the reference device helps the golfer determine the orientation of the putter face before making the putting stroke. For example, if the putter face of a right-handed putter is held in an “open” orientation, the laser beam spot is reflected to the right of center of the reference device. Conversely, if the putter face of a right-handed putter is held in a closed orientation, the laser beam spot is reflected to the left of center of the reference device. Of course, if the putter face is perpendicular, the laser beam spot is reflected directly into the center of the reference device.

The invention also relates to methods of fitting and aligning golf clubs. The method includes providing a golf club having a head having a loft angle and a shaft extending from the head at a lie angle, attaching a golf club fitting device to the shaft of the golf club, measuring an effective loft, an effective lie angle, and an effective lie angle. and adjusting the length and/or positioning of the golf club based on lie angle and effective loft. The method also includes swinging the club, measuring the swing plane of the golf club using a golf club fitting device, and adjusting the swing plane in response to the measured swing plane. The method also includes aiming the golf club at a target, measuring the actual aiming point of the golf club, and adjusting the aiming based on the measured aiming point.

15, a flow diagram illustrates a preferred method of fitting and adjusting a club according to the present invention. The approaches and techniques represented by the flow diagram are sufficient to describe at least one implementation of the method. However, other implementations of the method may utilize the approaches and techniques from those shown. It should be understood that the steps of the method outlined in the flowchart are not limited to the order stated; rather, these steps may be implemented in any order and still remain within the scope of the present disclosure.

As shown in Figure 15, first at 1501, a club fitting device 400 is attached to the shaft 105 of a golf club. The club fitting device 400 may be fixed to the shaft 105 with a fastener. Golf club fitting device 400 is positioned on shaft 105 such that the leading edge (left edge in Figure 8, right edge in Figure 9) is substantially parallel to the leading edge of the striking face of the putter.

Next, at 1502 the stroke plane indicator 407 is secured to the golf club fitting device. The stroke plane indicator may be a collimated light source, such as a laser that emits a collimated beam. Stroke plane indicator 407 may be fitted differently based on whether the putter is right-handed or left-handed.

Next, at 1503, the golf club is held at the address position and the first angle indicator 403 and second angle indicator 404 are read to determine an effective lie angle and an effective loft angle of the putter. Specifically, the first angle indicator 403 and the second angle indicator 404 may indicate a deviation from the putter's normal address position.

Next, at 1504, the positioning of the putter and/or the putter itself may be adjusted based on the readings at 1503. For example, if the first angle indicator 403 and the second angle indicator 404 indicate that at least one of the effective lie angle and the effective loft angle is not at the prescribed level, then the effective lie angle and the effective loft angle are not at the prescribed level. The putter can be repositioned to ensure that there is If the golfer is uncomfortable addressing the ball in a way that ensures the effective lie angle and effective loft are at the prescribed levels, the actual putter can be adjusted or replaced. Adjusting or replacing a putter may include any of the following: changing the lie angle of the putter, changing the loft angle of the putter, or changing the shaft length of the putter to ensure that the effective lie angle and effective loft angle are at specified levels. may include

Then, at 1505, the swing plane of the putter is evaluated. Specifically, the stroke plane indicator 407 is turned on and the light emitted therefrom is focused at or near the front area of the putter's striking face. While light is emitted from the stroke plane indicator 407, the putter is swung as if in use. As the putter is swinging, the light emitted from stroke plane indicator 407 indicates the swing plane of the floor. If the putter is swung in the proper plane, the path stroke plane indicator 407 traces on the floor will be parallel to the intended target line. For example, as shown in FIG. 8 , if the light emitted by the stroke plane indicator 407 is focused on the target line 311 at address, then the appropriate arcuate path 310 is the same as the stroke plane indicator 407. During the backswing, track the target line 311 and follow it through it. It is understood that, depending on the type of shaft installed in the putter, the stroke plane indicator 407 may focus on the target line, the heel side of the target line, or the toe side of the target line. Regardless of where the stroke plane indicator 407 focuses, the stroke plane indicator 407 tracks a substantially straight line substantially parallel to the target line 311 when the stroke is in a plane and follows an appropriate arcuate path 310. something to do.

Then, at 1506, the stroke and/or putter may be adjusted based on tracking the stroke plane indicator 407 at 1505. Many different adjustments can be made based on tracking, including the golfer's eye movements, body alignment, grip, weight distribution, geometry of the putter itself, etc.

Next, at 1507, golf club fitting device 400 is removed from the shaft and placed on the floor. Stroke plane indicator 407 is disposed on golf club fitting device 400.

Then, at 1508, the putter is placed in an address position such that stroke plane indicator 407 emits light toward the striking face 101 of putter 100, while stroke plane indicator 407 emits light. When a golfer addresses the golf ball prior to making a putting stroke, the beam emitted from stroke plane indicator 407 is directed back to the reference device. The position of the light reflected beam on the reference device helps the golfer determine the orientation of the putter face before making the putting stroke. For example, if a right-handed putter face is held in an “open” orientation, the laser beam spot is reflected to the middle right of the reference device. Conversely, if the putter face of a right-handed putter is held in a closed orientation, the laser beam spot is reflected to the left of center of the reference device. Of course, if the putter face is perpendicular, the laser beam spot is reflected directly into the center of the reference device.

Then, at 1509, the set position and/or putter may be adjusted based on how the laser beam spot is reflected. These adjustments may include the golfer's eye movement, body alignment, grip, weight distribution, and the geometry of the putter itself.

16 to 18, a golf club fitting device according to an embodiment of the present invention is disclosed. Figure 16 is a side view of a golf club fitting device attached to a grip of a golf club, Figure 17 is a side view of a grip and a golf club fitting device, and Figure 18 is a perspective view of a golf club fitting device attached to a grip of a golf club.

As shown in FIG. 16 , putter 160 includes a putter head 1604. Shaft 1605 is attached to putter head 1604. Shaft axis 1609 extends from putter head 1604 through the center of shaft 1605. When putter 160 is held in its normal address position (e.g., when the putter's prescribed loft angle and lie angle are maintained equal to the putter's effective loft angle and effective lie angle), shaft axis 1609 is aligned with the floor plane. It is arranged at a lie angle (β) with respect to (G). Grip 1606 is attached to the end of shaft 1605 opposite putter head 1604. Golf club fitting device 1600 is attached to putter 160 at the butt end of grip 1606.

17, grip 1606 and its attached golf club fitting device 1600 are shown in greater detail to illustrate some of the unique features of golf club fitting device 1600 in greater detail.

As shown in FIG. 17 , grip 1606 includes a butt end 16061 at its distal end. The butt end 16061 of the grip 1606 may be formed at any angle relative to the shaft axis 1609, but preferably the butt end 16061 of the grip 1606 is substantially perpendicular to the shaft axis 1609. is formed. Golf club fitting device 1600 includes a second device body 1601. The second device body 1601 may be formed of metal, wood, plastic, or composite material. According to an exemplary embodiment, the second device body 1601 of the golf club fitting device 1600 may be formed of anodized 6061 aluminum.

The second device body 1601 includes a lower surface 16013, an upper surface 16012 opposite the lower surface 16013, and a lateral surface 16014 connecting the lower surface 16013 and the upper surface 16012. do. The lower surface 16013 of the second device body 1601 may contact the butt end 16061 of the grip 1606 when the golf club fitting device 1600 is attached. According to embodiments of the invention, lower surface 16013 and butt end 16061 of grip 1606 are substantially flush with each other such that the transition from grip 1606 to golf club fitting device 1600 is substantially seamless. It can be configured.

As shown in FIG. 17 , the lower surface 16013 and the upper surface 16012 of the second device body 1601 may be formed to be angularly offset from each other. That is, the lower surface 16013 of the second device body 1601 may be substantially parallel to the butt end 16061 of the grip 1606, and the upper surface 16012 of the second device body 1601 may be substantially parallel to the butt end 16061 of the grip 1606. 160) may be substantially parallel to the floor plane G when held in the general address position.

Although the lower surface 16013 and the upper surface 16012 of the second device body 1601 may be offset from each other, the critical dimension is actually about the upper surface 16012 of the second device body 1601 and the shaft axis 1609. It is the first angle θ between the vertically extending planes 1611. According to an embodiment of the present invention, the first angle (θ) may be from about 0° to about 30°, preferably the first angle (θ) may be from about 15° to about 25°, and most preferably The first angle (θ) may be about 20° and is complementary to the lie angle (β).

When the first angle θ is in this range, the top surface 16012 of the second device body 1601 is substantially parallel to the floor plane G when the putter 160 is held in the normal address position.

Here, it is worth noting that the first angle θ is the same as the first angle θ described above with respect to FIG. 7 . Although the first angle θ shown in FIG. 16 is measured relative to the shaft axis 1609 rather than the bottom surface 413 of the golf club fitting device 400, the first angle θ is ultimately measured relative to the floor plane in the same way. The orientation of the golf club fitting device 400 and the golf club fitting device 1600 with respect to (G) is controlled.

Note that shaft axis 1609 may not pass exactly through the center of grip 1606. According to the rules of golf, a putter grip can be asymmetrical. For example, as shown in FIG. 17 , grip 1606 is configured such that the circumference of grip 1606 is greatest near butt end 16061 and a larger proportion of grip 1606 near butt end 16061. This may have a pistol shape positioned underneath the grip 1606 from the golfer's perspective.

18, a perspective view of golf club fitting device 1600 allows several additional features to be more clearly illustrated. As shown in FIG. 18 , angle indicator 1603 is coupled to second device body 1601 and is exposed on top surface 16012 of second device body 1601 . The angle indicator 1603 may be fixed to the second device body 1601 by press fit, snap fit, adhesive, mechanical fastening, etc.

Angle indicator 1603 may further include a level indicator 16034. Angle indicator 1603 may be any angle indicator, including but not limited to a bubble level, tilt sensor, tilt indicator, slope meter, slope gauge, draft meter, inclinometer, level gauge, and level meter.

Preferably, level indicator 16034 is a ball or bubble configured to move around angle indicator 1603 to indicate both the effective loft angle and effective lie angle of putter 160.

Angle indicator 1603 is configured to indicate both the effective loft angle and the effective lie angle of the putter. Angle indicator 1603 may further include markings 16033 formed thereon to provide a scale for measuring the effective lie angle and effective loft angle of putter 160 when held at address. Markings 16033 may be formed by any suitable manner, including but not limited to etching, molding, printing, or painting on angle indicator 1603.

According to an example embodiment, as shown in FIG. 18 , marking 16033 may include a first axis 16031 and a second axis 16032. The first axis 16031 may be oriented so that a virtual vertical plane including the first axis 16031 extends parallel to the leading edge of the striking face of the putter 160 when the golf club fitting device 1600 is attached. there is. The second axis 16032 is a first axis 16031 such that when the golf club fitting device 1600 is attached to the putter 160, a virtual vertical plane including the second axis 16032 extends parallel to the aiming line. ) can be orthogonal to.

The intersection of the first axis 16031 and the second axis 16032 represents a neutral position of the putter 160 where the effective lie angle and the effective loft angle are equal to the prescribed lie angle and the prescribed loft angle, respectively. When the level indicator 16034 is located at the intersection of the first axis 16031 and the second axis 16032, the putter 160 is positioned at the normal address position and is said to exhibit both a prescribed lie angle and a prescribed loft angle. You can.

Movement of level indicator 16034 along first axis 16031 corresponds to changes in the effective lie angle of putter 160. Movement of level indicator 16034 along second axis 16032 corresponds to a change in the effective loft angle of putter 160. Accordingly, movement of level indicator 16034 in different directions corresponds to changes in both the effective loft angle and effective lie angle of putter 160.

As an example, level indicator 16034 as shown in FIG. 18 is not centered about the intersection of first axis 16031 and second axis 16032. From the golfer's perspective, the level indicator 16034 in FIG. 18 is positioned so that the effective lie angle of the putter is too large (i.e., the putter is held too upright) off the second axis 16032. The level indicator 16034 is also positioned so that the effective loft angle is too small away from the first axis 16031 (i.e., the putter is pressed too far forward, causing the grip to move too close to the target).

By adjusting the address position of putter 160 to center level indicator 16034 about the intersection of first axis 16031 and second axis 16032, putter 160 is positioned consistently at its typical address position. It can be. By positioning the putter 160 in this manner, the golfer can become more adept at consistently and accurately addressing the golf ball. As detailed above, even slight deviations from the normal address location can cause the putt to deviate. Accordingly, golf club fitting device 1600 may be useful in improving a golfer's setup and resulting performance.

As shown in FIG. 18 , in addition to or alternatively to the first axis 16031 and the second axis 16032, the marking 16033 is located at the intersection of the first axis 16031 and the second axis 16032. It may contain one or more concentric circles centered at a center. As another example, the markings 16033 may be a grid centered about the intersection of the first axis 16031 and the second axis 16032 or a series of lines disposed along the first axis 16031 and the second axis 16032. May contain individual marks. As another example, marking 16033 may include a single point corresponding to the intersection of the first axis 16031 and the second axis 16032.

The markings 16033 of the angle indicator 1603 are approximately -10 degrees to about 10 degrees, preferably about -5 degrees to about 5 degrees, and most preferably about -10 degrees from the typical address position in terms of both lie and loft angles. It can be configured to exhibit a deviation range of 3 degrees to about 3 degrees.

Another feature of the invention shown more clearly in FIG. 18 is a protrusion 16015 extending from the lower surface 16013 of the second device body 1601. Protrusion 16015 is configured to secure golf club fitting device 1600 to butt end 16061 of grip 1606. Protrusion 16015 may have a tapered or constant diameter and may include one or more ribs 16016 having an increased diameter compared to adjacent portions of protrusion 16015. Protrusion 16015 is dimensioned to fit securely within a hole formed in the butt end 16061 of a conventional golf grip, such as grip 1606.

Although not shown in the drawings, according to an alternative embodiment of the present invention, the first magnet may be fixedly attached to the lower surface 16013 of the second device body 1601 and the second magnet may be attached to the butt of the grip 1606. It may be attached to or formed integrally with end 16061. The first and second magnets may have opposite polarities such that the golf club fitting device 1600 can be removably coupled to the butt end 16061 of the grip 1606 via magnetic forces.

According to another alternative embodiment, golf club fitting device 1600 may be removably coupled to butt end 16061 of grip 1606 using mechanical fasteners such as adhesives or screws.

According to embodiments of the present invention, a golf club fitting device can be easily and quickly installed on a golf club for use during practice because the rules of golf do not allow attaching removable components to a golf club during play. The configuration of the golf club fitting device, particularly the angular offset between the upper and lower surfaces of the second device body, offsets the lie angle of the golf club such that the angle indicator can be centered relative to the floor when installed. The centered position of the angle indicator results in accurate and consistent installation, allowing both effective loft angle and effective lie angle to be measured accurately and consistently by the angle indicator. As a result, a golf club fitting device according to embodiments of the present invention can uniquely improve the accuracy and consistency of a golfer's setup, and thus improve the golfer's accuracy and consistency when playing.

The invention also relates to a method of fitting a golf club. The method includes providing a golf club having a head having a loft angle and a shaft extending from the head at a lie angle, attaching a golf club fitting device to the grip of the golf club, measuring the effective loft angle, the effective lie angle, and and adjusting the length and/or positioning of the golf club based on the effective lie angle and the effective loft angle.

19, a flow chart illustrates a preferred method of fitting and adjusting a club according to the present invention. The approaches and techniques represented by the flow diagram are sufficient to describe at least one implementation of the method. However, other implementations of the method may utilize different approaches and techniques than those shown. It should be understood that the steps of the method outlined in the flowchart are not limited to the order stated; rather, these steps may be implemented in any order and still remain within the scope of the present disclosure.

As shown in Figure 19 and with reference to the golf club fitting device of Figures 16-18, first at 1901, a club fitting device 1600 is attached to a grip 1606 of a putter 160. Club fitting device 1600 may be secured to grip 1606 with protrusions 16015, adhesive, or other mechanical fasteners as described in detail above. Golf club fitting device 1600 is positioned on butt end 16061 of grip 1606 such that top surface 16012 of second device body 1601 is parallel to the floor when putter 160 is held in a general address position. The location is set.

Next, at 1902, putter 160 is held at the address position and angle indicator 1603 is read to determine the effective lie angle and effective loft angle of putter 160. Specifically, angle indicator 1603 may indicate a deviation from the general address position of putter 160.

Next, at 1903, the positioning of putter 160 and/or putter 160 itself may be adjusted based on the readings at 1902. For example, if the reading of the angle indicator 1603 indicates that at least one of the effective lie angle and the effective loft angle is not at the prescribed level, then the putter 160 is configured to ensure that the effective lie angle and the effective loft angle are at the prescribed level. ) can be rearranged. If the golfer is uncomfortable addressing the ball in a manner that ensures the effective lie angle and effective loft are at prescribed levels, the actual putter 160 may be adjusted or replaced. Adjusting or replacing the putter 160 may include changing the lie angle of the putter 160, changing the loft angle of the putter 160, or placing the putter (160) to ensure that the effective lie angle and effective loft angle are at specified levels. 160) may include any of changing the shaft length.

20 and 21, a grip according to an embodiment of the present invention that assists golf club fitting is disclosed. Figure 20 is a side view of a grip attached to a golf club in a typical address position, and Figure 21 is a side view of the grip.

As shown in FIG. 20, the putter 200 includes a putter head 2004. Shaft 2005 is attached to putter head 2004. Shaft axis 2009 extends from putter head 2004 through the center of shaft 2005. When putter 200 is held in its normal address position (e.g., when the putter's prescribed loft angle and lie angle are maintained equal to the putter's effective loft angle and effective lie angle), shaft axis 2009 is positioned at the floor plane. It is arranged at a lie angle (β) with respect to (G). Grip 2006 is attached to the end of shaft 2005 opposite putter head 2004. Grip 2006 includes a butt end 20061 adjacent the distal portion of shaft 2005 and a distal end 20071 opposite the butt end 20061. Butt end 20061 has a substantially planar top surface 20063. The distal end 20071 of the grip 2006 has a substantially planar bottom surface 20073.

Referring to FIG. 21 , grip 2006 is shown in greater detail to illustrate some of its unique features in greater detail.

As shown in FIG. 21 , grip 2006 includes a butt end 20061 at its distal end. The top surface 20063 of the butt end 20061 is angled with respect to a plane 2011 extending perpendicular to the shaft axis 2009. The bottom surface 20073 of the distal end 20071 may be angled with respect to a plane 2021 extending perpendicular to the shaft axis 2009. The top surface 20063 of the butt end 20061 can be substantially parallel to the floor plane G when the putter 200 is held in the general address position, and the bottom surface 20073 of the distal end 20071 can be 200 may be substantially parallel to the floor plane G when held in the normal address position. Top surface 20063 of butt end 20061 provides a visual indication of the effective lie angle and effective loft angle of putter head 2004. Likewise, bottom surface 20073 of distal end 20071 provides a visual indication of the effective lie angle and effective loft angle of putter head 2004.

When the top surface 20063 of the butt end 20061 and/or the bottom surface 20073 of the distal end 20071 are parallel to the floor plane G, the putter 200 is positioned at the general address position and the defined It can be said to represent both the lie angle and the specified loft angle.

21 , the critical dimension is the first angle θ ₁ between the top surface 20063 of the butt end 20061 and a plane 2011 extending perpendicular to the shaft axis 2009. According to an embodiment of the present invention, the first angle (θ ₁ ) may be about 10° to about 30°, preferably the first angle (θ ₁ ) may be about 15° to about 25°, and the most Preferably, the first angle (θ ₁ ) may be about 20° and may be complementary to the lie angle (β).

When the first angle θ ₁ is in this range, the top surface 20063 of the butt end 20061 is substantially parallel to the floor plane G when the putter 200 is held in the normal address position.

The bottom surface 20073 of the distal end 20071 of the grip 2006 is between the bottom surface 20073 of the distal end 20071 of the grip 2006 and a plane 2021 extending perpendicular to the shaft axis 2009. It may be oriented so that a second angle (θ ₂ ) is formed. According to an embodiment of the present invention, the second angle (θ ₂ ) may be about 10° to about 30°, preferably the second angle (θ ₂ ) may be about 15° to about 25°, and the most Preferably, the second angle (θ ₂ ) may be about 20° and may be complementary to the lie angle (β). Accordingly, the top surface 20063 of the butt end 20061 and the bottom surface 20073 of the distal end 20071 may be parallel to each other.

22 to 24, a golf club fitting device according to an embodiment of the present invention is disclosed. Figure 22 is a side view of a golf club fitting device attached to the grip of a golf club, Figure 23 is a side view of the grip and the golf club fitting device, and Figure 24 is a perspective view of the golf club fitting device.

As shown in FIG. 22, putter 220 includes putter head 2204. Shaft 2205 is attached to putter head 2204. Shaft axis 2209 extends from putter head 2204 through the center of shaft 2205. When putter 220 is held in its normal address position (e.g., when the putter's prescribed loft angle and lie angle are maintained equal to the putter's effective loft angle and effective lie angle), shaft axis 2209 is in the floor plane. It is arranged at a lie angle (β) with respect to (G). Grip 2206 is attached to the end of shaft 2205 opposite putter head 2204. Grip 2206 includes a butt end 22061 adjacent the distal portion of shaft 2205 and a distal end 22071 opposite the butt end 22061. Butt end 22061 has a substantially planar top surface 22063. Distal end 22071 of grip 2206 has a substantially planar bottom surface 22073. Golf club fitting device 2200 is attached to putter 220 at butt end 22061 of grip 2206.

23, grip 2206 and its attached golf club fitting device 2200 are shown in more detail to further describe some of the unique features of grip 2206 and golf club fitting device 2200. It is done.

As shown in Figure 23, grip 2206 includes a butt end 22061 at its distal end. The top surface 22063 of the butt end 22061 is angled with respect to a plane 2211 extending perpendicular to the shaft axis 2209. Bottom surface 22073 of distal end 22071 may be angled relative to a plane 2221 extending perpendicular to shaft axis 2209. A top surface 22063 of the butt end 22061 can be substantially parallel to the floor plane G when the putter 220 is held in a typical address position, and a bottom surface 22073 of the distal end 22071 can be substantially parallel to the putter 220. 220 may be substantially parallel to the floor plane G when held in the normal address position. Bottom surface 22073 of distal end 22071 can provide a visual indication of the effective lie angle and effective loft angle of putter head 2204. Golf club fitting device 2200 includes a device body 2201. Device body 2201 may be formed of metal, wood, plastic, or composite materials. According to an exemplary embodiment, the device body 2201 of the golf club fitting device 2200 may be formed of anodized 6061 aluminum.

Device body 2201 includes a lower surface 22013, an upper surface 22012 opposite lower surface 22013, and a lateral surface 22014 connecting lower surface 22013 and upper surface 22012. The lower surface 22013 of the device body 2201 may contact the upper surface 22063 of the butt end 22061 of the grip 2206 when the golf club fitting device 2200 is attached. According to embodiments of the present invention, the lower surface 22013 of the device body 2201 and the upper surface 22063 of the butt end 22061 have little or no clearance between the grip 2206 and the golf club fitting device 2200. They can be configured to substantially match each other so that they do not exist at all.

As shown in FIG. 23, the lower surface 22013 and upper surface 22012 of the device body 2201 may be formed substantially parallel to each other. Moreover, the lower surface 22013 of the device body 2201 may be substantially parallel to the upper surface 22063 of the butt end 22061 of the grip 2206. Accordingly, the top surface 22012 of the device body 2201 may be substantially parallel to the floor plane G when the putter 220 is held in the general address position.

Because the lower surface 22013 and upper surface 22012 of device body 2201 and the upper surface 22063 of the butt end 22061 of the grip 2206 are substantially parallel to each other, the critical dimension is the butt end 22061 of the device body 2201. is a first angle θ ₂₁ between the top surface 22063 of and a plane 2211 extending perpendicular to the shaft axis 2209. According to an embodiment of the present invention, the first angle (θ ₂₁ ) may be about 10° to about 30°, preferably the first angle (θ ₂₁ ) may be about 15° to about 25°, and the most Preferably, the first angle (θ ₂₁ ) may be about 20° and may be complementary to the lie angle (β).

When the first angle θ ₂₁ is in this range, the top surface 22012 of the device body 2201 is substantially parallel to the floor plane G when the putter 220 is held in the general address position. The first angle θ ₂₁ ultimately controls the orientation of the golf club fitting device 2200 relative to the floor plane G.

Bottom surface 22073 of distal end 22071 of grip 2206 is between bottom surface 22073 of distal end 22071 of grip 2206 and a plane 2221 extending perpendicular to shaft axis 2209. It may be oriented so that a second angle θ ₂₂ is formed. According to an embodiment of the present invention, the second angle (θ ₂₂ ) may be about 10° to about 30°, preferably the second angle (θ ₂₂ ) may be about 15° to about 25°, and the most Preferably, the second angle (θ ₂₂ ) may be about 20° and may be complementary to the lie angle (β). Accordingly, the top surface 22063 of the butt end 22061 and the bottom surface 22073 of the distal end 22071 may be parallel to each other.

Note that shaft axis 2209 may not pass exactly through the center of grip 2206. According to the rules of golf, a putter grip can be asymmetrical. For example, as shown in FIG. 23 , grip 2206 is configured such that the circumference of grip 2206 is greatest near butt end 22061 and a larger proportion of grip 2206 near butt end 22061. This may have a pistol shape positioned underneath the grip 2206 from the golfer's perspective.

24, a perspective view of golf club fitting device 2200 allows several additional features to be more clearly illustrated. As shown in FIG. 24 , angle indicator 2203 is coupled to device body 2201 and is exposed on top surface 22012 of device body 2201. The angle indicator 2203 may be fixed to the device body 2201 by press fit, snap fit, adhesive, mechanical fastening, etc.

The angle indicator 2203 may further include a level indicator 22034. Angle indicator 2203 can be any angle indicator, including but not limited to a bubble level, tilt sensor, tilt indicator, slope meter, slope gauge, draft meter, inclinometer, level gauge, and level meter.

Preferably, level indicator 22034 is a ball or bubble configured to move around angle indicator 2203 to indicate both the effective loft angle and effective lie angle of putter 220.

Angle indicator 2203 is configured to indicate both the effective loft angle and the effective lie angle of the putter. Angle indicator 2203 may further include markings 22033 formed thereon to provide a scale for measuring the effective lie angle and effective loft angle of putter 220 when held at address. Markings 22033 may be formed by any suitable manner, including but not limited to etching, molding, printing, or painting on angle indicator 2203.

According to an exemplary embodiment, as shown in FIG. 24 , marking 22033 may include a first axis 22031 and a second axis 22032. The first axis 22031 may be oriented so that a virtual vertical plane including the first axis 22031 extends parallel to the leading edge of the striking face of the putter 220 when the golf club fitting device 2200 is attached. there is. The second axis 22032 is a first axis 22031 such that when the golf club fitting device 2200 is attached to the putter 220, a virtual vertical plane including the second axis 22032 extends parallel to the aiming line. ) can be orthogonal to.

The intersection of the first axis 22031 and the second axis 22032 represents a neutral position of the putter 220 where the effective lie angle and the effective loft angle are equal to the prescribed lie angle and the prescribed loft angle, respectively. When the level indicator 22034 is located at the intersection of the first axis 22031 and the second axis 22032, the putter 220 is positioned at the normal address position and is said to exhibit both a prescribed lie angle and a prescribed loft angle. You can.

Movement of level indicator 22034 along first axis 22031 corresponds to changes in the effective lie angle of putter 220. Movement of level indicator 22034 along second axis 22032 corresponds to a change in the effective loft angle of putter 220. Accordingly, movement of level indicator 22034 in different directions corresponds to changes in both the effective loft angle and effective lie angle of putter 220.

As an example, level indicator 22034 as shown in FIG. 24 is not centered about the intersection of first axis 22031 and second axis 22032. From the golfer's perspective, the level indicator 22034 in FIG. 24 is positioned so that the effective lie angle of the putter is too large (i.e., the putter is held too upright) off the second axis 22032. The level indicator 22034 is also positioned so that the effective loft angle is too small away from the first axis 22031 (i.e., the putter is pushed excessively forward, causing the grip to move too close to the target).

By adjusting the address position of putter 220 to center level indicator 22034 about the intersection of first axis 22031 and second axis 22032, putter 220 is positioned consistently at its typical address position. It can be. By positioning the putter 220 in this manner, the golfer can become more adept at consistently and accurately addressing the golf ball. As detailed above, even slight deviations from the normal address location can cause the putt to deviate. Accordingly, golf club fitting device 2200 may be useful in improving a golfer's setup and resulting performance.

As shown in FIG. 24 , in addition to or alternatively to first axis 22031 and second axis 22032, marking 22033 is at the intersection of first axis 22031 and second axis 22032. It may contain one or more concentric circles centered at a center. As another example, the markings 22033 may be a grid centered about the intersection of the first axis 22031 and the second axis 22032 or a series of lines disposed along the first axis 22031 and the second axis 22032. May contain individual marks. As another example, marking 22033 may include a single point corresponding to the intersection of the first axis 22031 and the second axis 22032.

The markings 22033 of the angle indicator 2203 are about -10 degrees to about 10 degrees, preferably about -5 degrees to about 5 degrees, and most preferably about -10 degrees from the typical address position in terms of both lie angle and loft angle. It can be configured to exhibit a deviation range of 3 degrees to about 3 degrees.

Another feature of the invention shown more clearly in FIG. 24 is a protrusion 22015 extending from the lower surface 22013 of the device body 2201. Protrusion 22015 is configured to secure golf club fitting device 2200 to butt end 22061 of grip 2206. Protrusion 22015 may have a tapered or constant diameter and may include one or more ribs 22016 having an increased diameter compared to adjacent portions of protrusion 22015. The protrusion 22015 is dimensioned to fit securely within a hole formed in the butt end 22061 of the grip 2206.

Although not shown in the drawings, according to an alternative embodiment of the present invention, a first magnet may be fixedly attached to the lower surface 22013 of the device body 2201 and a second magnet may be attached to the butt end of the grip 2206 ( 22061) or may be formed integrally with it. The first and second magnets may have opposite polarities such that the golf club fitting device 2200 can be removably coupled to the butt end 22061 of the grip 2206 via magnetic forces.

According to another alternative embodiment, golf club fitting device 2200 may be removably coupled to butt end 22061 of grip 2206 using mechanical fasteners such as adhesives or screws.

25 and 29, a grip according to an embodiment of the present invention that assists in fitting a golf club is disclosed. Figure 25 is a perspective view of the grip, Figure 26 is a front view of the grip, Figure 27 is a top view of the grip, Figure 28 is a top view of the grip in a first misalignment orientation, and Figure 29 is a top view of the grip in a second misalignment orientation. am.

As shown in FIG. 25 , the grip 2506 configured to attach to a shaft having a shaft axis has an abutment end 25061 adjacent a distal portion of the shaft when attached to the shaft and a distal end 25071 opposite the abutment end 25061. ), and a front portion 25081 oriented in a direction away from the user at the general address location.

26 and 27, the grip further includes a rear portion 25083, a left portion 25084, and a right portion 25085. Anterior portion 25081, posterior portion 25083, left portion 25084, and right portion 25085 extend along the length of grip 2506 from butt end 25061 to distal end 25071. Front portion 25081 includes left edge 25087 and right edge 25089 that extend the length of grip 2506. The left edge 25087 and right edge 25089 are symmetrical to each other along the center line 25009 of the front portion 25081. Moving in the direction from the butt end 25061 of the grip 2506 to the distal end 25071, the left edge 25087 and right edge 25089 taper away from the centerline 25009 of the front portion 25081 and then: The anterior portion 25081 near the distal end 25071 of the grip 2506 tapers back toward the centerline 25009. The left edge 25087 and right edge 25089 of the front portion 25081 help improve feel and alignment for the user maintaining the grip 2506. The left edge 25087 and right edge 25089 of front portion 25081 may be smooth and continuous along the length of grip 2506.

Referring to FIG. 27, a plane 25011 may be formed that includes at least a portion of the left edge 25087 and at least a portion of the right edge 25089, and the plane 25011 is located at the target line 25022 at a general address location. is parallel to Grip 2506 may be attached to the putter such that plane 25011 is perpendicular to a plane containing the leading edge of the putter's striking face. The orientation of plane 25011 relative to target line 25022 provides a visual indication of whether the putter's striking face is normal, open, or closed relative to the target line.

As shown in Figure 28, plane 25011 is inclined with respect to target line 25022. This orientation represents the striking face of the putter in the closed position for a right-handed golfer and causes the ball to be struck to the left of target line 25022. For a left-handed golfer, the orientation shown in Figure 28 represents an open position and causes the ball to be hit to the left of target line 25022.

As shown in Figure 29, plane 25011 is inclined relative to target line 25022 in the opposite direction as shown in Figure 28. The orientation shown in FIG. 29 represents the striking face of the putter in the open position for a right-handed golfer and causes the ball to be struck to the right of target line 25022. For a left-handed golfer, the orientation shown in Figure 29 represents a closed position and causes the ball to be hit to the right of target line 25022.

According to another embodiment of the invention, the grip illustrated in FIGS. 25-29 has a butt end that is substantially planar as illustrated in FIGS. 20 and 21 and has an upper surface inclined with respect to a plane perpendicular to the shaft axis. You can have it. Additionally, the grip illustrated in FIGS. 25-29 may include a golf club fitting device attached to the butt end as illustrated in FIGS. 16-18 or 22-24.

According to embodiments of the present invention, a golf club fitting device can be easily and quickly installed on a golf club for use during practice because the rules of golf do not allow attaching removable components to a golf club during play. The configuration of the golf club fitting device, specifically the upper surface of the device body being substantially parallel to the floor plane at the general address position, offsets the lie angle of the golf club such that the angle indicator can be centered relative to the floor when installed. The centered position of the angle indicator results in accurate and consistent installation, allowing both effective loft angle and effective lie angle to be measured accurately and consistently by the angle indicator. As a result, a golf club fitting device according to embodiments of the present invention can uniquely improve the accuracy and consistency of a golfer's setup, and thus improve the golfer's accuracy and consistency when playing.

In describing the technology herein, certain features described in the context of separate implementations may also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented in multiple implementations individually or in any suitable sub-combination. Moreover, although features may be described above and even initially claimed as acting in a particular combination, one or more features from a claimed combination may in some cases be removed from the combination, and the claimed combination may be referred to as a sub-combination or sub-combination. It may be about variations in combination.

Various modifications to the implementations described in this disclosure may be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other implementations without departing from the spirit or scope of the disclosure. Accordingly, the claims are not intended to be limited to the implementations shown herein, but are to be accorded the widest scope consistent with this disclosure as well as the principles and novel features disclosed herein.

Claims (20)

A grip for a golf club comprising a shaft forming a shaft axis, a golf club head connected to a first end of the shaft, and a grip connected to a second end of the shaft opposite the first end, the grip comprising:
a butt end adjacent a distal portion of the second end of the shaft, the butt end having a substantially planar top surface; and
comprising a distal end opposite the butt end,
the top surface of the butt end is formed at a first angle with respect to a first plane perpendicular to the shaft axis, the first angle being between about 10° and about 30°;
and wherein the top surface of the butt end is substantially parallel to a floor plane when the golf club is held in a normal address position. 2. The grip of claim 1, wherein the first angle is about 20°. 2. The grip of claim 1, wherein the first angle is complementary to a defined lie angle of the shaft axis. 2. The method of claim 1, wherein the distal end has a substantially planar bottom surface, wherein the bottom surface of the distal end is formed at a second angle with respect to a second plane perpendicular to the shaft axis, wherein the second angle is about 10° to about 30°,
The grip of the grip wherein the bottom surface of the distal end is substantially parallel to the floor plane when the golf club is held in the general address position. 5. The grip of claim 4, wherein the second angle is about 20°. 2. The golf club fitting device of claim 1, further comprising a golf club fitting device attached to the butt end, the golf club fitting device comprising:
a device body having a lower surface, an upper surface opposite the lower surface, and a lateral surface connecting the upper surface and the lower surface; and
coupled to the device body and comprising an angle indicator exposed on the upper surface of the device body;
the device body is configured to engage the grip such that the lower surface of the device body is adjacent the upper surface of the butt end,
the top surface of the device body is oriented substantially parallel to the floor plane when the golf club is held in the general address position,
The grip wherein the angle indicator is in a neutral position when the golf club is in the general address position. 7. The grip of claim 6, wherein the angle indicator is configured to measure both an effective lie angle of the golf club head and an effective loft angle of the golf club head. 7. The device of claim 6, wherein the device body further comprises a protrusion extending from the lower surface,
The grip is configured to removably couple the device body to the butt end. 7. The grip of claim 6, wherein a first magnet is fixedly attached to the lower surface of the device body, and the first magnet is configured to removably couple the device body to the butt end through magnetic forces. 7. The grip of claim 6, wherein the angle indicator is a bubble level. 7. The grip of claim 6, wherein the angle indicator includes a level indicator, and the level indicator is a ball, ball. A grip configured to be attached to a shaft having a shaft axis, the grip comprising:
a butt end adjacent the distal portion of the shaft;
a distal end opposite said butt end;
an anterior portion, a posterior portion, a left portion, and a right portion extending the length of the grip from the butt end to the distal end; and
comprising a left edge and a right edge on the front portion extending the length of the grip,
the left edge and the right edge are symmetrical to each other along the center line of the front portion,
The grip, wherein in the direction from the butt end to the distal end, the left edge and the right edge taper away from the centerline of the front portion and then taper back toward the centerline of the front portion. 13. The grip of claim 12, wherein a plane comprising at least a portion of the left edge and at least a portion of the right edge is parallel to the target line at the general address location. 13. The grip of claim 12, wherein the left edge and the right edge are smooth and continuous along the length of the grip. 13. The method of claim 12, wherein going in the direction from the butt end to the distal end, the left edge and the right edge taper back toward the centerline of the anterior portion at a position closer to the distal end than to the butt end. Lose, grip. 13. The method of claim 12, wherein the butt end has a substantially planar top surface,
the top surface of the butt end is formed at a first angle with respect to a first plane perpendicular to the shaft axis, the first angle being between about 10° and about 30°;
A grip wherein the top surface of the butt end is substantially parallel to a floor plane when the grip is held in a normal address position. 17. The grip of claim 16, wherein the first angle is about 20°. 17. The grip of claim 16, wherein the first angle is complementary to a defined lie angle of the shaft axis. 17. The method of claim 16, wherein the distal end has a substantially planar bottom surface, wherein the bottom surface of the distal end is formed at a second angle with respect to a second plane perpendicular to the shaft axis, wherein the second angle is about 10° to about 30°,
The grip wherein the bottom surface of the distal end is substantially parallel to the floor plane when the grip is held in the general address position. 20. The grip of claim 19, wherein the second angle is about 20°.

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