CN111867685B - Improved weight training device - Google Patents

Abstract

A weight apparatus object configured to be lifted from a ground surface comprising: a first portion made of a high hardness material; a second portion made of an elastomeric material having a lower hardness than the first portion; and a handle for grasping the weighted implement object and lifting the object from the ground surface, wherein the second portion includes spaced apart holes in the elastomeric material for absorbing noise generated when the weighted implement object is lowered on the ground surface. Alternatively, a weighted instrument object configured to be lifted from the ground surface is disclosed, the weighted instrument object comprising at least one layer of elastomeric material having spaced holes therein for absorbing noise generated when the weighted instrument object is lowered on the ground surface, and an opening configured to receive a handle. Slip deformation for mounting a sound absorber to an existing weight lifting apparatus is disclosed. In an alternative example, a pill, atlas stone, or similar weight lifting device may be made using a sound absorber to improve the experience.

Description

Improved weight training equipment

cross reference paragraph

This application claims priority to U.S. Provisional Patent Application Serial No. 62/703,092, filed July 25, 2018, and is a continuation-in-part of U.S. Patent Application Serial No. 15/885,292, filed January 31, 2018, each of which A patent application is hereby incorporated by reference in its entirety for all purposes.

technical field

The following description relates to an improved weight training device. For example, weight training equipment may include one or more shock absorber zones to increase shock absorption and reduce noise during use.

Background technique

Traditional bumper plates used for training are made of solid rubber or elastomeric materials. Use weight plates instead of metal dish plates to absorb the shock and deceleration of the lifter lowering the weight or hitting the floor. However, as anyone who has ever been near a weightlifting gym knows, they are not effective at reducing vibration, sound, or impact. A known disadvantage of prior art weight training equipment, including weight plate designs, is the trade-off between the noise that is made when the weights are lowered to the floor, and the amount of bounce that the weights exhibit after they hit the floor. The low durometer elastomers (such as 70) used in such devices are relatively quiet, but they have high bounce properties, which can lead to injury. High durometer elastomers (such as 90) have low bounce, but can make a lot of noise (over 130dB) when lowered. For example, using a 135lb (61.235kg) barbell with a standard Rogue weight plate, lower the barbell from 4'10" (147.32cm) on a concrete floor covered with a 3/4" (1.905cm) rubber mat, measure 136 decibels [4 feet (121.92cm) from the decibel meter and 2 feet (60.96cm) from the wall]—the same as a jet engine at 100 feet (30.48m) away. A concrete wall (approximately 8 inches or 20.32 cm) between the storefronts with a finish and insulation on one side (approximately 2.25 inches or 5,715 cm) measured a decibel level of 70 decibels. This noise level is extremely Intrusive. In addition, it is known that the average person's pain perception begins at about 125 decibels, and that prolonged or repeated exposure to sounds equal to or higher than 85 decibels can cause hearing loss. The louder the sound, the greater the hearing loss. The shorter the time required.

Another disadvantage is that high stiffness weights cause damage to the floor upon impact, especially in training facilities, where enormous forces are applied in small areas of the floor, leading to cracks that require frequent and expensive repairs. Therefore, there is a need for a weight machine design that is both low bounce and low noise when lowered, and that is gentler to the surface upon which it is impacted.

Summary of the invention

This summary is provided to introduce some concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In one aspect, a weight object configured to be lifted from a ground surface includes a first portion of a high durometer material, a second portion of an elastomeric material having a lower durometer than said first portion , and a handle for grasping the weight apparatus object and lifting the object from the ground surface, wherein the second portion includes spaced holes in the elastomeric material for Noise generated when the weighted object is lowered on the ground surface is absorbed.

The second portion may be an exterior portion of the weight object that is in contact with the ground surface.

The second portion may be an interior portion of the weight object that is not in contact with the ground surface.

The handle may comprise a handle.

The first portion and the second portion may be co-formed as a weight plate, and the handle may comprise a rod that passes through an opening in the plate.

At least one of the spaced holes may pass completely through the elastomeric material.

At least one of the spaced holes may partly pass through the elastomeric material.

A plurality of the spaced apart holes may partly pass through the elastomeric material, with adjacent spaced apart holes of the elastomeric material opening in opposite directions.

The second portion may be shaped as a ring, and the spaced holes may be evenly spaced around the ring.

A shape of the spaced holes may be at least one of hexagonal, circular, square, triangular, and trapezoidal.

The first portion and the second portion may be formed together as a load plate, and the second portion may be on an outer side of the load plate surrounding the first portion.

In another aspect, a weight machine object shaped as a weight plate and configured to be lifted from a ground surface includes at least one elastomeric material comprising therein a spaced holes for noise generated when the weight is placed on the ground surface, and an opening configured to receive a handle for lifting the weighted object.

The at least one elastomeric material may comprise at least two elastomeric materials each having spaced apart pores therein for noise absorption.

The at least one elastomeric material may have at least two rows of spaced apart pores for noise absorption.

The at least one elastomeric material may have spaced holes therein at a periphery of the load plate that contacts the ground surface when the object is lowered.

The at least one elastomeric material may comprise at least two elastomeric materials, each elastomeric material having a different hardness.

A shape of the spaced holes may be at least one of hexagonal, circular, square, triangular, and trapezoidal.

At least one of the spaced holes may pass completely through the elastomeric material.

At least one of the spaced holes may partly pass through the elastomeric material.

The weight object may further include a handle inserted into the opening for grasping the weight object and lifting the object from the ground surface.

Several of the spaced apart holes may partly pass through the elastomeric material, the spaced apart holes of the elastomeric material opening in opposite directions.

The weight machine object may include a contact surface that contacts the ground surface when the object is lowered or rested, and the at least one hole in the at least one elastomeric material may be parallel when the object is rested. extending over the ground surface.

The weight machine object may include a contact surface that contacts the ground surface when the object is lowered or rested, and the at least one hole in the at least one elastomeric material may be perpendicular to the ground surface when the object is rested. The ground surface extends.

In yet another aspect, a weight equipment object shaped as a weight plate and configured to be lifted from a ground surface includes a first portion of an elastomeric material centrally located on the weight plate, an edge of the weight plate and formed by A second part of elastomeric material, wherein the edge of said first part includes a shaped groove formed circumferentially around said edge, and said second part is molded by a protrusion shaped to match the shape of said first part groove formed into the first portion, and at least one of the first portion and the second portion includes spaced apart holes in the elastomeric material for absorbing when the weight The noise generated when an instrument object is lowered onto said ground surface.

The shaped groove in the first part and the corresponding protrusion in the second part may be T-shaped.

At least one of the spaced holes may pass completely through the elastomeric material.

At least one of the spaced holes may partly pass through the elastomeric material.

Several of the spaced holes may partly pass through the elastomeric material, with adjacent spaced holes of the elastomeric material opening in opposite directions.

The first part and the second part may comprise elastomeric materials of different durometers.

In yet another aspect, there is provided a noise absorbing article for use with a weighted apparatus object, the article comprising: a first portion of an elastomeric material, the first portion contained within the elastomeric material spaced holes for absorbing noise generated when the weight object is lowered onto a solid surface; and lateral extensions of elastomeric material shaped to corresponding to a portion of the weight object to mount the noise absorbing article to the weight object.

The weight apparatus object may be a weight plate.

The lateral extensions enable the noise absorbing article to be mounted to the load plate in a sliding engagement.

The noise absorbing article is shaped as a scallop that fits over a portion of the outer periphery of the load plate.

The noise absorbing article may have a donut shape that fits over the entire periphery of the load plate.

The noise absorbing article may have two symmetrical parts assembled to fit over the entire periphery of the load plate.

The lateral extensions of the article may be provided with grooves to facilitate mounting the article on the load plate.

In another aspect, there is provided a noise absorbing weight apparatus object comprising: one or more weight plates each having a periphery provided with a noise absorbing elastomeric material; a side, each side sized to extend to or beyond the perimeter of the one or more load plates; and a connector passing through the opening of the one or more load plates, and into each of the two side portions to retain the one or more load plates and the side portions as one composite noise absorbing weight apparatus object.

The connectors may be threaded connectors fitted in respective openings of the two sides.

Each of the two sides may be shaped as a hemisphere that fits over the periphery of the load plate.

The weights of the two sides, the one or more weight plates and the connector may be selected to match a predetermined weight of a medicinal ball.

Description of drawings

The foregoing Summary, as well as the following Detailed Description, are better understood when read in conjunction with the accompanying figures. Certain examples of the present specification are shown in the drawings for purposes of illustration. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate system, device and method implementations consistent with this specification, and together with the description serve to explain advantages and principles consistent with the present invention.

Fig. 1 is a front perspective illustration of a traditional load board.

Figure 2 is a front perspective illustration of an example of a silent load board.

Fig. 3 is a front perspective illustration of another example of a silent load board.

4 is a side perspective illustration of an example of a silent dumbbell.

5 is a side perspective illustration of another example of a silent dumbbell.

6 is a side perspective illustration of an example of a silent kettlebell.

7 is a front perspective illustration of another example of a silent kettlebell.

Figure 8 is a side perspective illustration of a crescent shaped shock absorber.

9 is a front view of yet another example of a quiet weight plate and a perspective illustration of a barbell with two quiet weight plates.

10 is a front view of additional examples of quiet weight plates and a perspective illustration of a barbell with two quiet weight plates.

11 is a front view of another additional example of a quiet weight plate and a perspective illustration of a barbell with two quiet weight plates.

12 is a front view of another example of a quiet weight plate and a perspective illustration of a barbell with two quiet weight plates.

13 is an illustration of a quiet load board formed by a two-part molding process of one or more materials.

Figure 14 is an illustration of a slip design variant used with a load plate in one example.

Fig. 15 is a front view, a side view and a three-dimensional illustration of a barbell with two sliding deformation silent weight plates.

Figure 16 is a diagram showing a Stealth ball from different perspectives, including an exploded and assembled configuration in one example.

Figure 17 is an exploded variant of the silent Stealth sphere in one example.

FIG. 18 is a fully assembled variation of the silent Stealth ball of FIG. 17. FIG.

The relative size and depiction of various elements, features and structures may be exaggerated for clarity, illustration, and convenience.

Detailed description of the invention

The following detailed description is provided to assist the reader in gaining an overall understanding of the methods, devices and/or systems described herein. Accordingly, various changes, modifications, and equivalents of the systems, devices, and/or methods described herein will be suggested and, thus, will be apparent to those of ordinary skill in the art. Also, descriptions of well-known functions and constructions may be omitted for increased clarity and conciseness.

Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. For example, use of a singular term (eg, "an") is not intended to limit the number of items. For purposes of clarity, relative terms are also used in the specification such as, but not limited to, "top", "bottom", "left side", "right side", "upper", "lower", "downward", "upward ”, “sideways”, the use of which is not intended to limit the scope of the invention or the appended claims. Furthermore, it should be understood that any one feature may be used alone or in combination with other features. Other systems, methods, features and advantages of the invention will be apparent to those skilled in the art upon review of this detailed description. It is intended that such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the following claims.

As used herein, unless specifically stated otherwise, the term "about" means plus or minus 10% of a given value. As used herein, the term "shaped" means that an article has the overall appearance of a given shape even with minor deformations compared to the pure form of said given shape. A through hole or a fully penetrating hole is a hole in a solid that provides an opening through which something, such as air, can pass. Vias open on opposite sides of a solid or surface. Partially penetrating holes open on only one side of a solid or surface. A "groove" is a cut or depression in the surface of a material that is not surrounded by material. A "layer" is a sheet of material having volume or thickness forming a body or surface. In this disclosure, according to various examples of the invention, the term "quiet" will also be used to refer to improved weight equipment (ie, weight plates, dumbbells, kettlebells, etc.) that tend to exhibit low noise upon impact.

FIG. 1 is a front perspective view of a prior art load plate 100 . Weight plates are disc-shaped weights mounted on a barbell for weight training. The load plate includes an outer rim 102 , a body 104 , a hub 106 and a collar 108 . The collar defines a central rod hole 110 . The interface between the rim and the body includes an undercut 114 . Therefore, the thickness of the main body may be slightly smaller than the thickness of the rim. The interface between the body and the hub includes a step 116 . Thus, the hub may have a greater thickness than the body. The greater thickness of the rim and hub relative to the body allows raised indicia 120 to be molded into the body. The hub and rim protect the markings when the weight plate is lying flat on the ground. The undercut can also be used as a handle to make lifting the weight plate easier. The outer edge of the rim includes a bevel 112 . This makes it easier to pick up the weight plate when it is lying flat on the ground.

A typical load plate may have a radius 122 in the range of 8.75 inches to 8.86 inches (222.25mm to 225.044mm). A radius of 8.86 inches (222.25mm) is a standard competitive size. The rod hole radius 126 is approximately 1 inch (25.4 mm). Hub radius 124 is approximately 4.26 inches (108.204 mm). Rim height 132 is approximately 1.77 inches (44.958 mm). The undercut is approximately 0.43 inches (10.922 mm). Edge thickness 136 may range from 1.4 inches to 3.75 inches (35.56 mm to 95.25 mm) depending on the weight of the load plate.

The load plate can be made of solid rubber, bonded crumb rubber, polyurethane or other elastomers. The hardness of the elastomer may range from 70 to 90. The collar can be made of metal. The hub can include metal disc plates for added weight.

FIG. 2 is a front perspective view of an improved load plate 200 in one example of the present invention. The load plate in FIG. 2 is disc shaped with a shock absorber area 220 in the rim 202 . The bumper region 220 includes first holes 222 in a first circumferential row. In one example, holes 222 are spaced evenly across the rim laterally. In a different example, the hole 222 does not go completely through but only partially through the rim. The holes 222 in this example are hexagonal, but any shape could be used. Some shapes that can be used for the holes include, but are not limited to, circles, squares, triangles, trapezoids, and any other shape including irregular shapes. In this example, the interior corners of the hexagon are rounded to reduce material cracking. A suitable inner radius of curvature for inner corner 242 is in the range of 0.02 inches to 0.05 inches (0.05 mm to 1.27 mm). The elastomeric material between holes 222 forms radial walls 224 . When the load plate is lowered onto the ground, the holes 222 and surrounding radial walls 224 act as shock absorbers, reducing emitted noise without unduly increasing bounce. For load plates having a radius of about 8.75 inches (222.25mm) or greater, a suitable first hole width 226 is in the range of 0.5 inches to 0.75 inches (12.7mm to 19.05mm). A suitable hole spacing 228 is in the range of 0.75 inches to 1.5 inches (19.05 mm to 38.1 mm). A suitable wall width 230 is in the range of 0.13 inches to 0.5 inches (3.301 mm to 12.7 mm). A suitable wall height 232 is in the range of 0.5 inches to 1 inch (12.7 mm to 25.4 mm). Suitable spacings for other shapes may vary and are determined experimentally as discussed below.

According to the example shown in FIG. 2 , a second circumferential row of second holes 234 may be disposed adjacent to the row of first holes. As shown, the second hole 234 passes transversely through the disc, but in a different example the second hole 234 may only partially pass through the disc. The second hole 234 forms a plurality of circumferential walls 236 with the first hole 222 . The row of second holes 234 and corresponding walls provide additional shock absorbing capability.

Additional rows of holes may be provided as desired. The holes 222, 234 do not have to be the same shape or size within a given row. A suitable overall height of the bumper area 238 occupied by the rows of holes 222, 234 may be in the range of 0.5 inches to 1.5 inches (12.7 mm to 38.1 mm) for standard sized devices, or this range occurs for other designs Variety.

Sufficient clearance 254 should be provided between first hole 222 and the outer radial surface of disc 256 to form skin 252 . Suitable skin thicknesses typically range from 0.06 inches to 0.25 inches (1.524 mm to 6.35 mm). Depending on the material chosen, larger thicknesses can be used for stronger skins. The outer radial surface may also include radial protrusions (not shown) that can act as additional shock absorbers. For example, the bumper region 238 may be located at the outermost 2.5 inches to 3 inches (63.5 mm to 76.2 mm).

The quiet load plate may include a rim 202 , a body 204 , a hub 206 and a collar 208 . An undercut 212 may be provided at the interface of the rim and the body. A step 214 may be provided at the interface of the body and hub. The dimensions of the rim, body, hub, collar, undercut and steps may be similar to the dimensions of the corresponding features of the prior art load plate of FIG. 1 . The undercut and step are recessed into the body relative to the rim and hub so that raised markings 216 can be provided in the body. Bevels (not shown) may also be provided on the outer corners of the rim. As indicated, the external dimensions of the plate are preferably similar to those of standard equipment, but may vary in different settings.

To maintain the same plate radius and weight as prior art and/or competition standards, the thickness 244 of the plate may be increased to account for material loss in the holes 222,234. In a different example higher density materials could also be added. One example is the use of sheet metal placed at the hub or inside the load plate to increase overall density without excessively increasing thickness.

Quiet load boards can be made from elastomers such as rubber, pressed crumb rubber, polyurethane, or mixtures thereof. Hardness can range from 60 to 90. Lower durometer elastomers can be used to specify load plates for home use. This will help keep noise at an acceptable level for the home. A different stiffness can be used in the area of the shock absorbers relative to the rest of the Silent Weight Plate.

FIG. 3 is a front perspective view of an alternative silent load board 300 . This is similar to the quiet load plate of FIG. 2 , except that the bumper region 302 includes a first hole 304 having an elongated inverted trapezoidal shape. The first holes 304 are evenly spaced circumferentially. Radial walls 306 are formed between the holes 304 . The radial wall 306 has a relatively wide base and a narrow top.

FIG. 4 is a side perspective view of a silent dumbbell 400 . The dumbbells comprise conventional hexagonal weight dumbbells 404 with shock absorbers 402 positioned around each weight. Dumbbell 404 may be made of metal and shock absorber 402 may be made of elastomer. The holes in the shock absorbers are similar to those on the Silent Weight Plate in Figure 2, or can be adjusted to fit the overall size of the dumbbell.

FIG. 5 is a side perspective view of an alternative silent dumbbell 500 . The dumbbells comprise conventional hexagonal weight dumbbells 404 with shock absorbers 502 positioned around each weight. Dumbbell 404 may be made of metal and shock absorber 502 may be made of elastomer. The holes in the shock absorbers are similar to those on the Silent Weight Plate in Figure 3, or can be adjusted to fit the size of the dumbbell. The shock absorber for either of the silent dumbbells (Fig. 4 or 5) may have one or more flat outer surfaces (not shown) for storage and stacking. In a particular example, the shock-absorbing elastomeric layer can be configured such that the weight can retain the shape of a conventional hexagonal weight dumbbell.

FIG. 6 is a side perspective view of an improved kettlebell 600 . Kettlebell 600 includes a conventional kettlebell 604 including a plurality of shock absorber crescents 602 disposed around weights. Kettlebell 600 may be made of metal, and the shock absorber crescent may be made of elastomer. The holes on the shock absorber crescent are similar to those on the silent weight plate of Figure 2, or modified as needed to accommodate the size of the kettlebell. The crescent may be attached to the kettlebell by any known means, such as welding, gluing, pre-molding, or otherwise. Six to eight crescents are radially set and engaged at the bottom of the kettlebell. A sufficient number of crescents are added so that the metal kettlebell inside the crescents does not hit the ground when lowered.

FIG. 7 is a front perspective view of an alternative improved kettlebell 700 . The kettlebell comprises a conventional kettlebell 604 with several shock absorber crescents 702 positioned around the weights. Kettlebell 604 may be made of metal and shock absorber crescent 702 may be made of elastomer. The holes in the shock absorber crescent are similar to the holes in the silent weight plate of Figure 3, or adjusted for the size of the equipment. The crescent may be attached to the kettlebell by any known means, such as welding, gluing or pre-molding. In this example, six to eight crescents are placed radially and engage at the bottom of the kettlebell, but more or fewer crescents could be used. As in other examples discussed herein, the bore may extend only partially through the shock absorber crescent. Alternative designs for quiet kettlebells that do not use a shock absorber crescent may include a heavier inner and elastomeric outer provided with differently sized and arranged shock holes. In such embodiments, the holes may be formed to extend radially or at an angle towards the center of the kettlebell. In an alternative embodiment shown in Figures 6 and 7, the ends of the crescents 602 and 702 facing the top of the kettlebell may be tapered to avoid sharp edges (not shown). In yet another embodiment, the shock absorbing portion of the kettlebell may be constructed as a layer of elastomeric material having holes therein surrounding the metal core of the kettlebell instead of the crescent.

8 is a side perspective view of a crescent-shaped shock absorber 800 made in accordance with the present invention. The crescent has a thickness 810 of approximately 1 inch (25.4 mm). It has a height 812 of about 1 inch. It has an arcuate shape with a crescent angle 806 of approximately 90°. The radius of curvature to the inner surface 808 is approximately 8.75 inches (222.25mm). Thus, the crescent will conform to the outer curvature of the prior art load plate of FIG. 1 . A single row of uniformly spaced hexagonal first holes 811 is provided. In one example, hole spacing 814 may be about 1 inch (25.4 mm). Hole width 816 is approximately 0.63 inches (16.002 mm). The radial walls between the holes each have a width 818 of about 0.38 inches (9.652 mm). Skin thickness 822 is approximately 0.13 inches (3.302 mm). In a particular implementation, the front half of the reclosable 3M ^™ DualLock ^™ fastener 804 is disposed on the inner surface of the crescent. The front half is paired with a corresponding rear half of the DualLock fastener bonded to the outer radial surface of the conventional load plate as shown in Figure 1 . The crescent was formed by molding the thermoplastic elastomer compound Stantoprene ^™ 101-64 (item 802). Stantoprene has a rated hardness of 69 Shore A (Shore A).

In one example, a test was performed on a conventional barbell weighing 135 lbs. This barbell has weight plates at each end in the pattern shown in Figure 1. The barbell was lowered from a height of 4'10 inches (147.32 cm) onto rubber spacers covering the concrete floor. Measure the noise of impact with a decibel meter. When the barbell was lowered without any crescent shocks on the weight plates, 136dB was recorded.

Another test was performed with four crescent shock absorbers attached to the outer radial surface of the load plate on the barbell using DualLock fasteners. A crescent wraps around the outer surface of each load plate. Repeat the drop test. Noise was recorded at just 95dB, with a slight increase in bounce. It should be appreciated that the testing procedures described above can be used to aid in the design of improved weight training equipment having desired characteristics. For example, conducting the described tests on different hole designs can determine the optimum hole configuration for the desired noise level.

9 shows a diagram of a front view of yet another example of a quiet weight plate and a perspective view of a barbell with a quiet weight plate.

Referring to FIG. 9 , another example of a quiet load board 900 is shown that is similar to that of FIG. 2 except that there are at least two shock absorber regions 902 , 908 . The first region 902 includes holes 904 in a first circumferential row, possibly including holes 906 in a second circumferential row, and the second region 908 includes holes 910 in a third circumferential row, possibly including holes in a fourth circumferential row. row of holes 912 .

In a preferred embodiment, the holes in the first circumferential row 904 and the holes in the third circumferential row 910 may be the same size and may have the same dimensions as described with reference to the first holes 222 of the quiet load plate 200 of FIG. 2 . same size. The optional second circumferential row of holes 906 and the fourth circumferential row of holes 912 may be the same size and may have the same dimensions as described with reference to the second holes 234 of the quiet load plate 200 of FIG. 2 . Other dimensions, including the inner radius of curvature of the inner corners of the holes 904, 906, 910, 912, hole spacing, wall width, wall height, overall height of each bumper area 902, 908 occupied by the two rows of holes, and Skin thickness, can be the same as the dimensions provided in the example in Figure 2. In a preferred example, the distance between the outer edge of the load plate 900 and the outermost edge of the second shock absorber region 908 may be 5 inches to 7.5 inches (127mm to 190.5mm), wherein the second shock absorber region 908 The outermost edge is defined by a circle that touches the point of each aperture 910 closest to the outer edge of the load plate 900 .

In this example, by moving the holes towards the center of the board, the vibrations and forces transmitted from the ground when the board is lowered can be better controlled. By moving the holes towards the center, this enables the two solid parts of the plate to move somewhat independently of each other when a larger force is applied, for example, when lowering a barbell. The resulting reduction in force will reduce stress on the underlying floor, thereby reducing overall noise and damage to the floor. The second shock absorber region 908 and corresponding holes 910, 912 will also reduce the force exerted on and from the collar, thereby reducing the likelihood of a point of failure. As before, the holes can be pierced through to simplify fabrication, or partially through to provide greater structural integrity. In the case of partial through holes, a row of adjacent holes may be such that every other hole faces one direction (i.e. opens in one direction) and alternate adjacent holes face the other direction (i.e. opens in the other direction) pattern alternates. This hole arrangement can be applied to all of the embodiments described in this application (ie, FIGS. 3-11 ) and is intended to improve the structural integrity of the shock absorbing portion of each weight.

10 shows a diagram of an additional example of a front view of a quiet weight plate and a perspective view of a barbell with a quiet weight plate.

Referring to FIG. 10 , another example of a quiet load board 1000 is shown that is similar to that of FIG. 9 except that only the inner shock absorber region 1002 is present. The region 1002 includes holes 1004 in a first circumferential row and optionally holes 1006 in a second circumferential row.

In a preferred embodiment, the dimensions of the first circumferential row of holes 1004 may be the same as described with reference to the first holes 222 of the quiet load board 200 of FIG. 2 . The dimensions of the holes 1006 in the second circumferential row may be the same as described with reference to the second holes 234 of the quiet load plate 200 of FIG. 2 . Other dimensions, including the inner radius of curvature of the inner corners of the holes 1004, 1006, hole spacing, wall width, wall height, overall height of the shock absorber area 1002 occupied by the two rows of holes, and skin thickness, can be compared to that of FIG. 2 The dimensions provided in the examples are the same, or vary as required. In a preferred example, the distance between the outer edge of the load plate 1000 and the outermost edge of the shock absorber region 1002, which is defined by A circle is defined that touches the point of each aperture 1004 closest to the outer edge of the load plate 1000 .

Furthermore, it should be understood that the size and specification of the holes may vary according to the optimum specification determined through testing. In other words, the testing procedure can be used to aid in the design of improved weight plates, or weight machines more generally, with desired properties. For example, conducting the described tests on different hole designs can determine the optimum hole configuration for the desired noise level and/or weight of equipment.

In this example, by moving the row of shock absorbing holes 1004, 1006 to the center of the plate, this improves durability as the shock absorbency varies on the outer ring.

11 shows a diagram of another example of a front view of a quiet weight plate and a perspective view of a barbell with a quiet weight plate.

Referring to FIG. 11 , another example of a silent load board 1100 is shown. This example is similar to the quiet load plate of FIG. 10 , except that the inner shock absorber region 1102 is closer to the collar of the load plate 1100 . The region 1102 includes a first circumferential row of holes 1104 and an optional second circumferential row of holes 1106 .

In a preferred embodiment, the dimensions of the first circumferential row of holes 1104 may be the same as those described with reference to the first holes 222 of the quiet load plate 200 of FIG. 2, or may vary as desired or by design. The dimensions of the second circumferential row of holes 1106 may be the same as those described with reference to the second holes 234 of the quiet load plate 200 of FIG. 2 . Other dimensions, including the inner radius of curvature of the inner corners of the holes 1104, 1106, hole spacing, wall width, wall height, overall height of the shock absorber area 1102 occupied by the two rows of holes, and skin thickness, can be compared to that of FIG. 2 The dimensions provided in the examples are the same or may vary as required or by design. In a preferred example, the distance between the outer edge of the load plate 1100 and the outermost edge of the shock absorber region 1102 may be 6 inches to 7.5 inches (152.4mm to 190.5mm), wherein the outermost edge of the shock absorber region 1102 Defined by a circle that touches the point of each aperture 1104 closest to the outer edge of the load plate 1100 .

In this example, by moving the row of shock absorbing holes 1104, 1106 to the collar of the plate, this improves durability as the shock absorbency varies on the outer ring. By moving the row of shock absorbing holes 1104, 1106 to where the rod passes through the plate, this also reduces the force that would damage the collar. It will be appreciated that the rod holes alone or in combination with the rods can be used as handles for grasping and lifting the board off the ground.

12 shows a diagram of a front view of another example of a quiet weight plate 1200 and a perspective view of a barbell with a quiet weight plate. The load plate 1200 of FIG. 12 is a variation of the load plate 200 shown in FIG. 2 in which high density foam is added to the open spaces of the shock absorbing holes on the outer ring. In this example, by adding foam into the open spaces of the shock holes, all the advantages of the load plate 200 of FIG. 2 are retained, with the added benefits of reduced noise, reduced stress, and increased durability.

Although this example shows adding foam to all holes, many different variations can be provided. For example, foam may be added only to the holes in the first circumferential row and not to the holes in the second circumferential row. Conversely, foam may be added only to the holes in the second circumferential row and not to the holes in the first circumferential row. Furthermore, foam may be added to only half of the holes in any type of arrangement, such as every other hole or only on one side of the load plate 1200 . This example can be applied to all embodiments shown; in other words, foam can be used to fill the pores in all embodiments described throughout the application. Other materials, such as elastomers, gels, or other materials, can also be used to fill the pores.

On the other hand, a flat panel of elastomer with a shock absorber area can be used as a protective pad. The shock absorber area may be similar to the areas described above. Thus, when a weight is lowered onto the pad, the pad will dampen noise without unduly increasing bounce. Shock pads can be made by extrusion.

Figure 13 shows a diagram of a quiet load board formed by a two-part molding process of one or more materials.

Referring to FIG. 13 , a method of manufacturing a quiet load board 1300 and a quiet load board 1300 formed using such a method are described. According to this example, the central section 1310 of the plate 1300 may be molded onto the outer ring 1320 in a two-part molding process. This manufacturing process will enable the central section 1310 of the plate 1300 to be molded in a higher density rubber, resulting in reduced bounce and greater durability.

For example, central section 1310 may be made of rubber having a density in the range of 50 durometer to 70 durometer, preferably in the range of 55 durometer to 70 durometer, and most preferably in the range of 59 durometer to 69 durometer within range. The outer ring 1320 may be made of rubber having a density in the range of 70 durometer to 90 durometer, preferably in the range of 75 durometer to 90 durometer, and most preferably in the range of 79 durometer to 89 durometer. High density or durometer weight boards tend to bounce less and are more durable than low density boards. Thus, at least one advantage of the higher density outer ring 1320 includes providing a more durable and less elastic load plate while maintaining the shock absorbing advantages of the lower stiffness central section 1310 .

In another example, central section 1310 may be formed from a rubber that is denser than the rubber forming outer ring 1320 . In other words, unlike the previous examples, the lower density segments may be formed on the outside while the higher density segments are formed on the inside. In another example, the central section 1310 and the outer ring 1320 may be formed from materials of different densities or different materials together, including any one or more of rubber, polymers, metals, other elastomers, or other materials.

In one example, a method of manufacturing a load plate 1300 includes molding a central section 1310 of the plate 1300 with an inverted T-shaped groove 1315 formed circumferentially around the entire outer ring, such as a load plate 1300 is shown in section. After the central section 1310 is cured or partially cured, the outer section 1320 may be molded with a T-shaped protrusion 1325 formed circumferentially around the entire outer section 1320, the T-shaped protrusion 1325 corresponding to the T-shaped recess of the central section 1310. Slot 1315. In this example, outer section 1320 is also molded to contain a first circumferential row of holes 1330 and a second circumferential row of holes 1335 . This results in a load plate 1300 having the same hole arrangement as provided in the load plate 200 in the example of FIG. 2 , but with the load plate 1300 being formed from one or more materials having different properties. Although this example depicts T-shaped grooves 1315 and T-shaped protrusions 1325, it should be understood that many other shapes may be used for the grooves and protrusions, such as corresponding square, triangular, U-shaped, and the like. Additionally, although this example depicts grooves and protrusions around the entire circumference of the load plate 1300 , it should be understood that the grooves and protrusions may be formed around one or more localized sections around the circumference of the load plate 1300 .

Furthermore, while this example results in a load plate 1300 having the same hole arrangement as that provided in the load plate 200 illustrated in FIG. 2 , it should be understood that any of the described and contemplated examples may also be formed in accordance with this approach. In other words, the inner section may also be molded perforated to form a load plate 900 as provided in the example of Figure 9, or only the inner section may be molded perforated to form The weight plate 1000, 1010 provided in. Additionally, in all of these examples, the resulting load plate 1300 may include foam-filled cells, as described in the description provided in connection with FIG. 12 .

Sound tests were conducted using an example prototype of the above-mentioned weight plate shown in Figure 2.

The test parameters used are as follows:

Weight plate brand: Rogue Echo-88 hardness load plate

System weight: 95lb (2x45lb load plates, 1x5lb wooden dowel)

Barbell: Wooden Dowel 2"

Floors: Standard 3/4" rubber spacers on concrete

Rings: Clout Fitness Rings

Distance between decibel meter and barbell: 4

The results of this test are described in Table 1 below. Referring to Table 1, the Rogue echo result is the dB value without using the true model, and the Stealth 1Strip SWL true model result is the dB value using the true model. The delta is the difference in value with and without the prototype, and other values, including percent reduction, percent average reduction, average dB reduction, and percent noise removed, are based on calculated deltas.

Table 1

Those skilled in the art will recognize that the described examples are not limited to any particular device size. Furthermore, those skilled in the art will recognize that the weight plates, dumbbells, kettlebells and shock absorbers described herein are not limited to any type of material. As a non-limiting example, the load plate is formed primarily of rubber. Those skilled in the art will recognize that other diameters, types and thicknesses of preferred materials may be utilized when considering preferred dampening characteristics and different applications which may be determined and optimized eg via acoustic testing as described above.

Additional configurations are contemplated as part of all of the embodiments discussed above. The modification is based on the "sealing" of the outwardly facing holes, similar to the familiar honeycomb seal. Sealing can be achieved with a membrane covering the outwardly facing openings, protecting them from contamination without compromising the overall design and/or efficiency of the wells. Methods of sealing the outwardly facing holes for this purpose will be apparent to those of ordinary skill in the art. This may include, but is not limited to, sealing with additional elastomeric or non-elastomeric materials, such as, but not limited to, transparent or opaque rubber, plastic or polymeric materials.

Figure 14 presents a diagram of another embodiment of the invention including a variation of the slide design for use with weight plates or other weight lifting equipment.

In this design modification, the Silent (or Stealth) Weightlifting Slip variant allows users to add Stealth technology to one (or more) of their existing boards. This variant uses the same sound and damping technology as the full-board version discussed above. However, instead of molding the entire plate as discussed in the various examples above, the slip-on version consists only of a crescent and a pliable rubber inner rim or ring, which allows the shock-absorbing section to slide forcefully over the existing weight plate shift.

This design modification is shown in FIG. 14, where FIG. 14A shows a side view of the damping glide section 1400; FIG. 14B is a cross-section of the damping glide section showing the retaining fingers or lateral extension 1410; and Figure 14C is a side view of the shock absorbing section 1400 mounted on an existing plate. In Figure 14A, the slip ring design 1400 has an outer rim consisting of two rings with hexagonal holes and sides extending down the outermost portion of the existing weight plate. It will be appreciated that, as previously discussed, the slip design may use different local hole configurations or hole shapes instead of through holes. These holes are used to absorb shock when the lifter lowers the barbell. The lateral extension 1410, best shown in Figure 14B, enables the ring of noise absorbing holes to forcibly slide over the existing plate. Similar to the sides used in the sound absorbing section, similar elastomeric materials with different hardnesses can be used. In an alternative embodiment, these lateral extensions may taper, resulting in beaded sections to increase friction and retention (similar to a bicycle tire fitted on a tube). The sides have some ductility (that is, the ability to deform under compressive stress) to be able to slide over the plate, and some elasticity so that material deformed under load returns to its original dimensions when unloaded. Two tabs 1420 at the ends of the lateral extensions hold the slide portion fixed on the plate. For example, if vulcanized rubber is used for the lateral extensions, durability is usually not an issue.

Figure 14C shows a fully assembled design where the sliding sound absorbing section is mounted on an existing plate. It will be appreciated that different slip design configurations are possible, where multiple sectors mounted separately and glued together may be used instead of a one-piece toroidal sound absorber. One such design modification could use two or more sectors (eg, as shown in Figures 6-8) that are mounted separately and secured together, eg, by gluing, to hold them in place. A multi-scalloped donut-like slip design can also be done by using a side slit and a strap or leather threaded through the center hole of the weight plate (where the rod goes through) and connecting to the other side.

Referring to Figure 14B, another potential design modification includes a sound absorber in which a circular ring-shaped absorber is cut in the middle in a vertical direction, thereby creating two pieces that can be fastened together in use.

With further reference to the slip-on design, it will be understood that the sides will be elastic and should be difficult to place on the board and correspondingly difficult to disengage from the board when in use. Conceptually, the design is similar to a bicycle tire on a tube, a fitted sheet on a mattress, or a swimming cap on your head. With a lower durometer rubber on the sides, this slip-on design should be flexible enough to make it harder to fit but snug.

Another possibility is to put small gaps in the rubber to relieve some tension. This change may require a strap to be threaded through the center hole of the weight plate (where the rod goes through) and attached on the opposite side to hold the glide in place.

In a different example, the size of the plate will dictate a different size slip bumper, or the end user will only use them in eg 25 and 45 lb weights (11.34 and 20.41 kg respectively). The needs here outweigh the financial burden and the underestimated cost of floor repairs.

Other modifications are possible that facilitate fitting the absorber to existing equipment, as will be appreciated by those skilled in the art.

Figure 15 shows a diagram of a front, side and perspective view of a barbell with two sliding deformation silent weight plates.

The figure shows multiple front, side and perspective views of the Silent (or Stealth) weightlifting slide option in a particular example. Two weight plates on a barbell are shown without limiting the type of equipment the slip design is suitable for. The thing to note here is that the inner rim of the Stealth Weightlifting Sliding Ring extends 4 to 10 inches over the outer rim of the existing weight plates. In one example, the sides may have a raised texture on the bottom side and rubber tubing at their outermost edges to increase friction and hold on to the weight plate.

The design examples shown in Figures 14 and 15 both show slip deformation on existing weight plates. This slippage deformation slightly increases the overall diameter of the weight plate, making it unsuitable for competition use. However, for the average user as well as the professional athlete in training, this may be a small price to pay in exchange for a noticeable reduction in the resulting noise and damage. The slip-on design also adds a little weight. This can be remedied by reducing the weight of the bar or adjusting other weights used during the lift. Naturally, more than two plates can be attached to the barbell. In this case, in a different embodiment, only the panels with the largest diameter can be equipped with sound absorbers.

Figure 16 is a diagram showing a Stealth ball with sound absorption from different perspectives, including the disassembled and assembled configuration in one example.

Medicine ball variations can be found in many weight rooms, CrossFit gyms, and gyms. A medicine ball (exercise ball, medicine ball, or gym equipment ball) is a weighted ball roughly equal to the diameter of the shoulder that is often used for rehabilitation and strength training. Other variations of a similar type include padded padded balls for throwing, sand balls for punching and lifting, and Atlas stones for lifting. Currently, users are required to purchase one type of ball for each weight that they intend to throw, punch or lift. For example, the Atlas stone as a lifting stone usually consists of several stones of increasing weight placed on top of podias of varying heights. Atlas stones are cast in concrete molds by gym owners and are often used to lift onto the shoulders of lifters before being lowered to the ground, causing noise and severely damaging the floor.

By combining a Stealth weight plate with two sound-absorbing hemispheres, as shown in Figure 16, it was possible to develop the first adjustable medicine ball and Atlas stone that utilizes equipment already available in gyms. People can lift and punch without messing up the gym, avoiding handling sand and other fillers, or worrying about damaging the floor. This design addition will also allow for wider use of this type of lifting in group and individual training settings by using Stealth Weightlifting (SWL) weight plates for loading.

As shown in FIG. 16, according to one example, weight plates can be readily used to create adjustable medicine balls that complement existing exercise equipment. 16A-16F show different perspective views of a "Stealth Ball" in a specific example using the techniques of the present invention. As shown, the Stealth Ball is intended as an attachment to the Stealth Weightlifting Plate and consists of two hemispheres with a maximum outer diameter of approximately 455mm to match the diameter of the corresponding plate. These hemispheres are constructed of an elastomeric material and are internally supported and secured with a set of variable length threaded connectors with a 2" (5.08cm) center diameter. Longer lengths are available if the user wishes to add weight connector.

As shown in Figures 16A-16C and 16E, the sides of the hemisphere may have room for logos, trademarks, trade dress, or other information. Figure 16H is an exploded side view of an example Stealth ball showing the main components: two hemispheres, one or more weight plates (shown as two in this case), and threaded connectors. Figure 16G shows an exploded perspective view of a Stealth ball showing the use of sound absorbing material for a corresponding Stealth panel. Figure 16F is a side view of an alternate assembled Stealth ball. Various design modifications, including size (larger or smaller diameter), shape (spherical shape can be substituted for other shapes), weight (multiple additional plates), will be apparent to those skilled in the art.

Figure 17 is an exploded variant of the silent Stealth sphere in one example. This image shows how to assemble a Stealth ball using two Stealth Weightlifting (SWL) plates. First, the user can determine the desired weight and select the correct length of connector to use with the SWL weight plate. Next, the user can screw the length of the connector into one of the hemispheres and load it with the desired weight. Finally, the user can screw on the second hemisphere leaving no gap between the inner surface of the ball and the weight plate

FIG. 18 is a fully assembled variation of the silent Stealth ball of FIG. 17. FIG.

As mentioned above, the size, shape and weight can vary widely in different examples. One such possibility assembled includes the following design numbers: Possible exemplary weight loads for Stealth balls: Hemisphere - 4.5lb (2.041166kg); Threaded connector - 1lb (0.4535924kg); 2x 45lb (20.41166kg) Plates - 90lb (40.82331kg); Hemisphere - 4.5lb (0.4535924kg); Total: 100lb (45.35924kg). In other examples, exercise equipment of different sizes and weights may be used.

Those skilled in the art will appreciate that changes may be made to the above-described embodiments without departing from their broad inventive concepts. It is understood, therefore, that the invention disclosed herein is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention.

Claims (27)

1. An improved weight plate comprising a rim, a body, and a collar having a central opening, further comprising:

at least one elastomeric material having a hardness equal to or less than the body hardness and forming at least a portion of the rim, the at least one elastomeric material forming a first bumper region in the rim including spaced apart holes therein configured to absorb noise generated when the improved bogie plate is lowered on a hard surface;

wherein the outlet openings of at least some of the spaced apart holes are arranged along two or more circles in the center of the collar, an

Wherein the opening in the center of the collar is configured to receive one end of a rod for lifting the improved weight plate.

2. The improved load bearing plate of claim 1, wherein said at least one elastomeric material forms a second damper region in said body, the second damper region including spaced apart apertures configured to absorb noise, and one or more circled outlet apertures along a center of the collar.

3. The improved load board of claim 1, wherein said spaced apart apertures are at least one of hexagonal, circular, square, triangular, trapezoidal, or irregular in shape.

4. The improved weight plate as recited in claim 1, wherein the spaced apart holes in one of said two or more circles are larger than the spaced apart holes in the other of said two or more circles.

5. The improved weight plate of claim 1, wherein the first bumper region at the improved weight plate rim includes a contact surface configured to contact the hard surface when the improved weight plate is lowered or rested, and at least one of the spaced apart holes in the at least one elastomeric material extends parallel to the hard surface when the improved weight plate is rested.

6. The improved weight plate of claim 1, wherein the radius of the improved weight plate is greater than or equal to 222.25mm.

7. The improved weight plate of claim 2, wherein at least one of the first shock absorber region in the rim and the second shock absorber region in the body contains two concentric circles of outlet aperture openings configured to absorb noise spaced apart apertures.

8. The improved load bearing plate of claim 1, wherein said spaced apart holes comprise at least one through hole passing completely through said at least one elastomeric material.

9. The improved weight plate of claim 1, wherein the opening in the center of the collar configured to receive one end of a rod for lifting the improved weight plate has a radius of 1 inch (25.4 mm).

10. The improved load board of claim 1, wherein said at least one elastomeric material is one or more of rubber, pressed crumb rubber, polyurethane, or mixtures thereof.

11. The improved load bearing plate as recited in claim 1, wherein at least some of said spaced holes have a cross-sectional width greater than 12.7mm.

12. The improved load board of claim 1, wherein said at least one elastomeric material has a hardness in the range of 60 to 90.

13. The improved weight plate as described in claim 1, wherein said first bumper region in said rim containing spaced apart holes therein has a radial dimension in the range of 0.5 to 1.5 inches (12.7 to 38.1 mm).

14. The improved weight plate as recited in claim 1, wherein said spaced apart apertures are separated by a resilient wall having a thickness in the range of 0.13 inch to 0.5 inch (3.301 mm to 12.7 mm).

15. The improved weight plate of claim 2, wherein the spaced apart holes in the body in the second bumper region are located about 5 to 7.5 inches (127 to 190.5 mm) from an edge of the improved weight plate configured to contact the hard surface when the improved weight plate is lowered.

16. The improved weight plate set of claim 1, comprising two or more pairs of improved weight plates, wherein each pair of improved weight plates has the same weight, and at least two pairs of improved weight plates in the set have different weights.

17. The barbell comprises a bar and at least one pair of improved weight plates as claimed in claim 1, each pair of said improved weight plates having equal weight and being connected at opposite ends of the bar, wherein each end of the bar is designed to fit into an opening in the centre of the collar of each improved weight plate.

18. An improved weight plate comprising a rim, a body, and a collar having a central opening, further comprising:

at least one elastomeric material having a hardness equal to or lower than the rim hardness and forming at least a portion of the body, the at least one elastomeric material forming a first bumper region in the body including spaced apart apertures therein configured to absorb noise generated when the improved bogie plate is lowered on a hard surface;

wherein the outlet openings of at least some of the spaced apart holes are arranged along one or more circles in the center of the collar, an

Wherein the opening in the center of the collar is configured to receive one end of a rod for lifting the improved weight plate.

19. The improved load plate as recited in claim 18, wherein said spaced apart apertures are at least one of hexagonal, circular, square, triangular, trapezoidal, or irregular in shape.

20. The improved load bearing plate of claim 18, wherein at least a portion of said spaced apart apertures in said body in said first bumper region are through holes passing completely through said at least one elastomeric material.

21. The improved load bearing plate of claim 18, wherein at least a portion of said spaced holes in said first damper region in said body partially pass through said at least one elastomeric material.

22. The improved load board of claim 18, wherein at least two partially through holes open in opposite directions.

23. The improved load board of claim 18, wherein said at least one elastomeric material is one or more of rubber, pressed crumb rubber, polyurethane, or mixtures thereof.

24. The improved load board of claim 18, wherein said at least one elastomeric material has a hardness in the range of 60 to 90.

25. The improved weight plate as recited in claim 18, wherein the rim and the body of the improved weight plate are made of the same resilient material.

26. The improved weight plate as recited in claim 18, comprising at least two resilient materials having different durometers.

27. An improved weight plate comprising a rim, a body, and a collar having a central opening, further comprising:

at least one elastomeric material having a hardness equal to or less than the body hardness and forming at least a portion of the rim, the at least one elastomeric material forming a first bumper region in the rim including spaced apart holes therein configured to absorb noise generated when the improved bogie plate is lowered on a hard surface;

wherein the outlet openings of at least some of the spaced apart holes are arranged along two or more circles in the centre of the collar,

wherein the opening in the center of the collar is configured to receive one end of a rod for lifting the improved weight plate, an

Wherein the spaced apart holes are located about 0.06 to 0.25 inches (1.524 to 6.35 mm) from an edge of the modified weight plate configured to contact the hard surface when the modified weight plate is lowered.

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