Noise Absorbing Articles for Use with Weight Apparatus Objects

Abstract

A weightlifting implement configured to be lifted from the ground surface includes: a first portion made of a high-hardness material; a second portion made of an elastomeric material having a hardness lower than that of the first portion; and a handle for gripping the weightlifting implement and lifting the implement from the ground surface, wherein the second portion includes spaced-apart holes within the elastomeric material, the spaced-apart holes being configured to absorb noise generated when the weightlifting implement is placed on the ground surface. Alternatively, a weightlifting implement configured to be lifted from the ground is disclosed, the weightlifting implement including at least one elastomeric material layer having spaced-apart holes therein, the spaced-apart holes being configured to absorb noise generated when the weightlifting implement is placed on the ground surface, and an opening configured to receive a handle. A slip deformation for mounting a sound absorber to an existing weightlifting device is disclosed. In an alternative example, a sound absorber can be used to fabricate a pill, an Atlas stone, or a similar weightlifting device to improve the experience.

Description

[0001] Related Applications

[0002] This application is a divisional of the invention application with an application date of January 30, 2019, a priority date of January 31, 2018 and July 25, 2018, an application number of 201980017647.6, and a title of "Improved Weightlifting Training Equipment".

[0003] Cross - Reference Sections

[0004] This application claims the benefit of priority of U.S. Provisional Patent Application No. 62 / 703,092, filed Jul. 25, 2018, and is a partial continuation of U.S. Patent Application No. 15 / 885,292, filed Jan. 31, 2018, each of which is hereby incorporated by reference in its entirety for all purposes. Technical Field

[0005] The following description relates to improved weightlifting training equipment. For example, the weightlifting training equipment can include one or more shock - absorbing regions to increase shock absorption and reduce noise during use. Background Art

[0006] Traditional bumper plates used for training are made of solid rubber or elastomeric materials. Bumper plates are used instead of metal discs to absorb the shock and deceleration when a weightlifter lowers or drops a weight onto the floor. However, as anyone who has been near a weightlifting gym knows, they are not effective in reducing shock, noise, or impact. A known drawback of prior art weightlifting training equipment, including bumper plate designs, is the trade-off between the noise created when dropping a weight onto the floor and the amount of bounce exhibited after the weight hits the floor. Low durometer elastomers (e.g., 70) used in such equipment are relatively quiet, but they have high bounce, which can lead to injury. High durometer elastomers (e.g., 90) have low bounce, but make a great deal of noise (over 130 dB) when dropped. For example, testing a 135 lb (61.235 kg) barbell with standard Rogue bumper plates, dropping the barbell from 4’10” (147.32 cm) onto a concrete floor covered with 3 / 4 inch (1.905 cm) rubber padding measured 136 decibels [4 feet (121.92 cm) from the decibel meter and 2 feet (60.96 cm) from the wall] - the same decibels as a jet engine 100 feet (30.48 m) away. In the same test, the decibel level measured through a concrete wall (roughly 8 inches or 20.32 cm) that was finished and insulated on one side (roughly 2.25 inches or 5,715 cm) between two storefronts was 70 decibels. This noise level is extremely disruptive. Additionally, it is known that the pain threshold for an average person starts at about 125 decibels, and prolonged or repeated exposure to sounds equal to or above 85 decibels can lead to hearing loss. The louder the sound, the shorter the time required for hearing loss to occur.

[0007] Another drawback is that high durometer weights cause damage to the floor upon impact, especially in training facilities where large forces are applied over a small area of the floor, resulting in cracks that require frequent and expensive repairs. Accordingly, there is a need for a weight design that has low bounce and low noise when dropped and is gentler on the surface being impacted. SUMMARY OF THE INVENTION

[0008] This Summary is provided to introduce a selection of 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 to help determine the scope of the claimed subject matter.

[0009] In one aspect, a weight object configured to be lifted from the ground surface includes a first part made of a high-hardness material, a second part made of an elastomeric material having a hardness lower than that of the first part, and a handle for gripping the weight object and lifting the object from the ground surface, wherein the second part includes spaced-apart holes within the elastomeric material for absorbing noise generated when the weight object is placed on the ground surface.

[0010] The second part can be the exterior of the weight object that contacts the ground surface.

[0011] The second part can be the interior of the weight object that does not contact the ground surface.

[0012] The handle can include a grip.

[0013] The first part and the second part can be co-formed into a weight plate, and the handle can include a rod passing through an opening in the plate.

[0014] At least one of the spaced-apart holes can completely pass through the elastomeric material.

[0015] At least one of the spaced-apart holes can partially pass through the elastomeric material.

[0016] A plurality of the spaced-apart holes can partially pass through the elastomeric material, and adjacent spaced-apart holes in the elastomeric material open in opposite directions.

[0017] The second part can be formed as a ring, and the spaced-apart holes can be evenly spaced around the ring.

[0018] The shape of the spaced-apart holes can be at least one of hexagon, circle, square, triangle, and trapezoid.

[0019] The first part and the second part can be formed together into a weight plate, and the second part can be on the outer side of the weight plate surrounding the first part.

[0020] In another aspect, a weight object formed as a weight plate and configured to be lifted from the ground surface includes at least one elastomeric material having spaced-apart holes therein for absorbing noise generated when the weight object is placed on the ground surface, and an opening configured to receive a handle for lifting the weight object.

[0021] The at least one elastomeric material may include at least two elastomeric materials, each elastomeric material having spaced-apart holes therein for absorbing noise.

[0022] The at least one elastomeric material may have at least two rows of spaced-apart holes for absorbing noise.

[0023] The at least one elastomeric material may have spaced-apart holes therein located at the periphery of the load-bearing plate, which periphery contacts the ground surface when the object is lowered.

[0024] The at least one elastomeric material may include at least two elastomeric materials, each elastomeric material having a different hardness.

[0025] The shape of the spaced-apart holes may be at least one of hexagonal, circular, square, triangular, and trapezoidal.

[0026] At least one of the spaced-apart holes may completely pass through the elastomeric material.

[0027] At least one of the spaced-apart holes may partially pass through the elastomeric material.

[0028] The weight exercise object may further include a handle inserted into the opening, the handle for gripping the weight exercise object and lifting the object from the ground surface.

[0029] Several of the spaced-apart holes may partially pass through the elastomeric material, and the spaced-apart holes of the elastomeric material open in opposite directions.

[0030] The weight exercise object may include a contact surface that contacts the ground surface when the object is lowered or placed, and when the object is placed, at least one hole in the at least one elastomeric material may extend parallel to the ground surface.

[0031] The weight exercise object may include a contact surface that contacts the ground surface when the object is lowered or placed, and when the object is placed, at least one hole in the at least one elastomeric material may extend perpendicular to the ground surface.

[0032] In yet another aspect, a weight apparatus object formed as a weight plate and configured to be lifted from a ground surface includes a first portion located at the center of the weight plate and made of an elastomeric material, and a second portion located at the edge of the weight plate and made of an elastomeric material, wherein an edge of the first portion includes a formed groove circumferentially formed around the edge, and the second portion is molded into the first portion by a protrusion shaped to match the shape of the groove of the first portion, and at least one of the first portion and the second portion includes spaced-apart holes within the elastomeric material, the spaced-apart holes for absorbing noise generated when the weight apparatus object is placed on the ground surface.

[0033] The formed groove in the first portion and the corresponding protrusion in the second portion may be T-shaped.

[0034] At least one of the spaced-apart holes may completely pass through the elastomeric material.

[0035] At least one of the spaced-apart holes may partially pass through the elastomeric material.

[0036] Several of the spaced-apart holes may partially pass through the elastomeric material, and adjacent spaced-apart holes of the elastomeric material open in opposite directions.

[0037] The first portion and the second portion may include elastomeric materials of different hardnesses.

[0038] In yet another aspect, there is provided a noise absorption article for use with a weight apparatus object, the article comprising: a first portion made of an elastomeric material, the first portion including spaced-apart holes within the elastomeric material, the spaced-apart holes for absorbing noise generated when the weight apparatus object is placed on a solid surface; and a laterally extending portion made of an elastomeric material, the extending portion shaped to correspond to a portion of the weight apparatus object to mount the noise absorption article to the weight apparatus object.

[0039] The weight apparatus object may be a weight plate.

[0040] The laterally extending portion enables the noise absorption article to be mounted to the weight plate in a slip-fit manner.

[0041] The noise absorption article is shaped to fit as a sector on a portion of an outer periphery of the weight plate.

[0042] The noise absorption article may have a donut shape adapted to the entire outer periphery of the weight plate.

[0043] The noise absorbing article may have two symmetrical components which, when assembled, fit around the entire outer periphery of the load plate.

[0044] The lateral extensions of the article may be provided with grooves to facilitate mounting of the article on the load plate.

[0045] In another aspect, there is provided a noise absorbing weight exercise object comprising: one or more load plates, each load plate having an outer periphery equipped with a noise absorbing elastomeric material; two side portions made of a noise absorbing elastomeric material, each side portion sized to extend to or beyond the outer periphery of the one or more load plates; and a connector passing through an opening in the one or more load plates and into each of the two side portions to hold the one or more load plates and the side portions as a composite noise absorbing weight exercise object.

[0046] The connector may be a threaded connector fitted into corresponding openings in the two side portions.

[0047] Each of the two side portions may be shaped as a hemisphere adapted to the outer periphery of the load plate.

[0048] The weights of the two side portions, the one or more load plates and the connector may be selected to match a predetermined weight of a fitness medicine ball.

[0049] In the original application of this divisional application, the content of the original claims was:

[0050] 1. A weight exercise object configured to be lifted from the ground surface, the weight exercise object comprising:

[0051] A first portion made of a high hardness material;

[0052] A second portion made of an elastomeric material having a hardness lower than that of the first portion; and

[0053] A handle for gripping the weight exercise object and lifting the object from the ground surface,

[0054] wherein the second portion includes spaced-apart holes within the elastomeric material for absorbing noise generated when the weight exercise object is placed on the ground surface.

[0055] 2. The weight exercise object according to claim 1, wherein the second portion is an exterior of the weight exercise object that contacts the ground surface.

[0056] 3. The weight apparatus object according to claim 1, wherein the second portion is an interior of the weight apparatus object that does not contact the ground surface.

[0057] 4. The weight apparatus object according to claim 1, wherein the handle includes a grip.

[0058] 5. The weight apparatus object according to claim 1, wherein the first portion and the second portion are integrally formed as a weight plate, and the handle includes a rod passing through an opening in the plate.

[0059] 6. The weight apparatus object according to claim 1, wherein at least one of the spaced-apart holes completely passes through the elastomeric material.

[0060] 7. The weight apparatus object according to claim 1, wherein at least one of the spaced-apart holes partially passes through the elastomeric material.

[0061] 8. The weight apparatus object according to claim 7, wherein a plurality of the spaced-apart holes partially pass through the elastomeric material, and adjacent spaced-apart holes in the elastomeric material open in opposite directions.

[0062] 9. The weight apparatus object according to claim 1, wherein the second portion is formed as a ring, and the spaced-apart holes are evenly spaced around the ring.

[0063] 10. The weight apparatus object according to claim 1, wherein the shape of the spaced-apart holes is at least one of hexagonal, circular, square, triangular, and trapezoidal.

[0064] 11. The weight apparatus object according to claim 1, wherein the first portion and the second portion are integrally formed as a weight plate, and the second portion is on an outer side of the weight plate that surrounds the first portion.

[0065] 12. A weight apparatus object formed as a weight plate configured to be lifted from the ground surface, the weight apparatus object comprising:

[0066] at least one elastomeric material including spaced-apart holes therein for absorbing noise generated when the weight apparatus object is placed on the ground surface; and

[0067] an opening configured to receive a handle for lifting the weight apparatus object.

[0068] 13. The weight apparatus object according to claim 12, wherein the at least one elastomeric material comprises at least two elastomeric materials, each elastomeric material having spaced-apart holes therein for absorbing noise.

[0069] 14. The weight apparatus object according to claim 12, wherein the at least one elastomeric material has at least two rows of spaced-apart holes for absorbing noise.

[0070] 15. The weight apparatus object according to claim 12, wherein the at least one elastomeric material having spaced-apart holes therein is located on an edge of the weight plate, and when the object is lowered, the edge contacts the ground surface.

[0071] 16. The weight apparatus object according to claim 12, wherein the at least one elastomeric material comprises at least two elastomeric materials, each elastomeric material having a different hardness.

[0072] 17. The weight apparatus object according to claim 12, wherein the shape of the spaced-apart holes is at least one of a hexagon, a circle, a square, a triangle, and a trapezoid.

[0073] 18. The weight apparatus object according to claim 12, wherein at least one of the spaced-apart holes completely penetrates the elastomeric material.

[0074] 19. The weight apparatus object according to claim 12, wherein at least one of the spaced-apart holes partially penetrates the elastomeric material.

[0075] 20. The weight apparatus object according to claim 12, further comprising a handle inserted into the opening, the handle for holding the weight apparatus object and lifting the object from the ground surface.

[0076] 21. The weight apparatus object according to claim 19, wherein several of the spaced-apart holes partially penetrate the elastomeric material, and adjacent spaced-apart holes of the elastomeric material open in opposite directions.

[0077] 22. The weight apparatus object according to claim 12, wherein the weight apparatus object comprises a contact surface that contacts the ground surface when the object is lowered or placed, and when the object is placed, at least one hole in the at least one elastomeric material extends parallel to the ground surface.

[0078] 23. The weight apparatus object according to claim 12, wherein the weight apparatus object includes a contact surface that contacts the ground surface when the object is lowered or placed, and when the object is placed, at least one hole in the at least one elastomeric material extends perpendicular to the ground surface.

[0079] 24. A weight apparatus object shaped as a weight plate configured to be lifted from the ground surface, the weight apparatus object including:

[0080] A first portion located at the center of the weight plate and made of an elastomeric material;

[0081] A second portion located at the edge of the weight plate and made of an elastomeric material, wherein

[0082] The edge of the first portion includes a formed groove circumferentially formed around the edge, and the second portion is molded into the first portion using a protrusion shaped to match the formed groove in the first portion, and

[0083] At least one of the first portion and the second portion includes spaced-apart holes within the elastomeric material for absorbing noise generated when the weight apparatus object is placed on the ground surface.

[0084] 25. The weight apparatus object according to claim 24, wherein the formed groove in the first portion and the corresponding protrusion in the second portion are T-shaped.

[0085] 26. The weight apparatus object according to claim 24, wherein at least one of the spaced-apart holes completely penetrates the elastomeric material.

[0086] 27. The weight apparatus object according to claim 24, wherein at least one of the spaced-apart holes partially penetrates the elastomeric material.

[0087] 28. The weight apparatus object according to claim 27, wherein a plurality of the spaced-apart holes partially penetrate the elastomeric material, and adjacent spaced-apart holes in the elastomeric material open in opposite directions.

[0088] 29. The weight apparatus object according to claim 24, wherein the first portion and the second portion include elastomeric materials of different hardnesses.

[0089] 30. The weight apparatus object according to claim 1, wherein one or more of the spaced-apart holes are filled with foam.

[0090] 31. The weight apparatus object according to claim 1, wherein the spaced-apart holes are sealed off from the external environment to protect the holes from dirt or other debris entering the holes.

[0091] 32. A noise absorption article for use with a weight apparatus object, the article comprising:

[0092] a first portion made of an elastomeric material, the first portion including spaced-apart holes within the elastomeric material for absorbing noise generated when the weight apparatus object is placed on a solid surface; and

[0093] a laterally extending portion made of an elastomeric material, the extending portion shaped to correspond to a portion of the weight apparatus object for mounting the noise absorption article to the weight apparatus object.

[0094] 33. The noise absorption article according to claim 32, wherein the weight apparatus object is a weight plate.

[0095] 34. The noise absorption article according to claim 33, wherein the laterally extending portion enables the noise absorption article to be mounted to the weight plate in a slip-fit manner.

[0096] 35. The noise absorption article according to claim 33, wherein the article is shaped as a sector that fits onto a portion of the outer periphery of the weight plate.

[0097] 36. The noise absorption article according to claim 33, wherein the article has an annular shape that fits onto the entire outer periphery of the weight plate.

[0098] 37. The noise absorption article according to claim 36, wherein the article has two symmetrical components that fit together onto the entire outer periphery of the weight plate.

[0099] 38. The noise absorption article according to claim 34, wherein the laterally extending portion is provided with grooves to facilitate mounting the article on the weight plate.

[0100] 39. A noise-absorbing weight apparatus object, comprising:

[0101] one or more weight plates, each weight plate having an outer periphery equipped with a noise-absorbing elastomeric material;

[0102] two side portions made of a noise-absorbing elastomeric material, each side portion sized to extend to or beyond the outer periphery of the one or more weight plates; and

[0103] A connector that passes through an opening in the one or more weight plates and into each of the two sides to hold the one or more weight plates and the sides as a composite noise-absorbing weight exercise object.

[0104] 40. The noise-absorbing weight exercise object according to claim 39, wherein the connector is a threaded connector that fits into corresponding openings in the two sides.

[0105] 41. The noise-absorbing weight exercise object according to claim 39, wherein each of the two sides is shaped as a hemisphere that fits around the outer periphery of the weight plate.

[0106] 42. The noise-absorbing weight exercise object according to claim 41, wherein the weights of the two sides, the one or more weight plates, and the connector are selected to match a predetermined weight of a fitness solid ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] The foregoing summary, as well as the following detailed description, will be better understood when read in conjunction with the accompanying drawings. For purposes of illustration, certain examples of this specification are shown in the drawings. 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 implementations of systems, apparatus, and methods consistent with this specification, and, together with the specification, are used to explain advantages and principles consistent with the invention.

[0108] Figure 1 is a front perspective view illustration of a conventional weight plate.

[0109] Figure 2 is a front perspective view illustration of an example of a silent weight plate.

[0110] Figure 3 is a front perspective view illustration of another example of a silent weight plate.

[0111] Figure 4 is a side perspective view illustration of an example of a silent dumbbell.

[0112] Figure 5 is a side perspective view illustration of another example of a silent dumbbell.

[0113] Figure 6 is a side perspective view illustration of an example of a silent kettlebell.

[0114] Figure 7 is a front perspective view illustration of another example of a silent kettlebell.

[0115] Figure 8 is a side perspective view illustration of a crescent-shaped shock absorber.

[0116] Figure 9 Front view of another example of the silent weight plate and perspective view of a barbell with two silent weight plates.

[0117] Figure 10 Front view of an additional example of the silent weight plate and perspective view of a barbell with two silent weight plates.

[0118] Figure 11 Front view of another additional example of the silent weight plate and perspective view of a barbell with two silent weight plates.

[0119] Figure 12 Front view of another example of the silent weight plate and perspective view of a barbell with two silent weight plates.

[0120] Figure 13 Illustration of a silent weight plate formed by a two-component molding process of one or more materials.

[0121] Figure 14 Illustration of a slip design variation used with a weight plate in one example.

[0122] Figure 15 Front, side, and perspective views of a barbell with two slip-variation silent weight plates.

[0123] Figure 16 Views of the Stealth ball shown from different perspectives, including the disassembled and assembled configurations in one example.

[0124] Figure 17 Disassembled variation of the silent Stealth ball in one example.

[0125] Figure 18 is Figure 17 fully assembled variation of the silent Stealth ball in

[0126] For clarity, illustration, and convenience, the relative sizes and depictions of the various elements, features, and structures may be exaggerated. Detailed Description

[0127] The following detailed description is provided to assist the reader in obtaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. Accordingly, various changes, modifications, and equivalents of the systems, apparatuses, and / or methods described herein will be apparent to those of ordinary skill in the art. Additionally, descriptions of well-known functions and configurations may be omitted for increased clarity and conciseness.

[0128] In addition, it should be understood that the terminology and terms used herein are for the purpose of description and should not be regarded as restrictive. For example, the use of singular terms (such as "a") is not intended to limit the number of items. For clarity, relational terms are also used in the specification, such as but not limited to "top", "bottom", "left", "right", "upper", "lower", "downward", "upward", "lateral", and their use is not intended to limit the scope of the present invention or the appended claims. In addition, it should be understood that any one feature can be used alone or in combination with other features. By referring to this detailed description, other systems, methods, features, and advantages of the present invention will be apparent to those skilled in the art. Such additional systems, methods, features, and advantages are intended to be included within this specification, within the scope of the present invention, and protected by the appended claims.

[0129] As used herein, unless otherwise specifically indicated, the term "about" means plus or minus 10% of a given value. As used herein, the term "formed" means that an article has the overall appearance of a given shape even with minor deformations compared to the pure form of the given shape. A through-hole or a completely penetrating hole is a hole that provides an opening in a solid through which something such as air can pass. The through-hole opens on opposite sides of the solid or surface. A partially penetrating hole opens only on one side of the solid or surface. A "groove" is a cut or depression on the surface of a material that is not surrounded by the material. A "layer" is a sheet having a quantity or thickness that forms a solid or surface. In the present disclosure, according to different examples of the present invention, the term "silent" will also be used to denote improved weight equipment (i.e., weight plates, dumbbells, kettlebells, etc.) that tend to exhibit low noise upon impact.

[0130] Figure 1 is a front perspective view of a prior art weight plate 100. The weight plate is a disc-shaped weight equipment mounted on a barbell for weightlifting training. The weight plate includes an outer edge 102, a body 104, a hub 106, and a collar 108. The collar defines a central rod hole 110. The interface between the edge and the body includes an undercut 114. Thus, the thickness of the body can be slightly less than the thickness of the edge. The interface between the body and the hub includes a step 116. Thus, the hub can have a greater thickness than the body. The greater thickness of the edge and the hub relative to the body allows raised markings 120 to be molded into the body. When the weight plate lies flat on the ground, the hub and the edge protect the markings. The undercut can also be used as a handle to make it easier to lift the weight plate. The outer edge of the edge includes a bevel 112. This makes it easier to pick up the weight plate when it lies flat on the ground.

[0131] A typical weight plate can have a radius 122 in the range of 8.75 inches to 8.86 inches (222.25 mm to 225.044 mm). The radius of 8.86 inches (222.25 mm) is the standard competitive size. The rod hole radius 126 is approximately 1 inch (25.4 mm). The hub radius 124 is approximately 4.26 inches (108.204 mm). The edge height 132 is approximately 1.77 inches (44.958 mm). The undercut is approximately 0.43 inches (10.922 mm). The edge thickness 136 can be in the range of 1.4 inches to 3.75 inches (35.56 mm to 95.25 mm) depending on the weight of the weight plate.

[0132] The weight plate can be made of solid rubber, bonded crumb rubber, polyurethane, or other elastomers. The hardness of the elastomer can be in the range of 70 to 90. The collar can be made of metal. The hub can include a metal disc plate to increase the weight.

[0133] Figure 2 is a front perspective view of an improved weight plate 200 in an example of the present invention. Figure 2 The weight plate in is disc-shaped and has a shock absorber region 220 in the edge 202. The shock absorber region 220 includes first holes 222 in a first circumferential row. In one example, the holes 222 extend transversely through the edge and are evenly spaced. In different examples, the holes 222 do not completely penetrate but only partially penetrate the edge. The holes 222 in this example are hexagonal, but any shape can be used. Some shapes that can be used for the holes include, but are not limited to, circular, square, triangular, trapezoidal, and any other shape including irregular shapes. In this example, the inner corners of the hexagon are rounded to reduce material cracking. The suitable inner curvature radius of the inner corners 242 is in the range of 0.02 inches to 0.05 inches (0.05 mm to 1.27 mm). The elastomeric material between the holes 222 forms radial walls 224. When the weight plate is placed on the ground, the holes 222 and the surrounding radial walls 224 act as shock absorbers, thereby reducing the noise generated without overly increasing the bounce. For a weight plate having a radius of about 8.75 inches (222.25 mm) or greater, the suitable first hole width 226 is in the range of 0.5 inches to 0.75 inches (12.7 mm to 19.05 mm). The suitable hole spacing 228 is in the range of 0.75 inches to 1.5 inches (19.05 mm to 38.1 mm). The suitable wall width 230 is in the range of 0.13 inches to 0.5 inches (3.301 mm to 12.7 mm). The suitable wall height 232 is in the range of 0.5 inches to 1 inch (12.7 mm to 25.4 mm). The suitable spacing for other shapes can vary and is determined experimentally as discussed below.

[0134] According to Figure 2 In the example shown, the second hole 234 of the second circumferential row may be disposed adjacent to the first hole of the row. As shown, the second hole 234 extends transversely through the disk, but in different examples the second hole 234 may only partially extend through the disk. The second hole 234 and the first hole 222 form a plurality of circumferential walls 236. The row of second holes 234 and the corresponding walls provide additional shock absorbing capabilities.

[0135] Additional rows of holes may be provided as needed. The holes 222, 234 need not have the same shape or size within a given row. The suitable overall height of the shock absorber region 238 occupied by the rows of holes 222, 234 may range from 0.5 inches to 1.5 inches (12.7 mm to 38.1 mm) for a standard size device, or this range may vary for other designs.

[0136] Sufficient clearance 254 should be provided between the first hole 222 and the outer radial surface of the disk 256 to form a skin 252. The suitable skin thickness generally ranges from 0.06 inches to 0.25 inches (1.524 mm to 6.35 mm). Larger thicknesses may be used for a more robust skin depending on the material selected. The outer radial surface may also include radial protrusions (not shown) that can serve as additional shock absorbers. For example, the shock absorber region 238 may be located at the outermost 2.5 inches to 3 inches (63.5 mm to 76.2 mm).

[0137] The silent load plate may include an edge 202, a body 204, a hub 206, and a collar 208. An undercut 212 may be provided at the interface of the edge and the body. A step 214 may be provided at the interface of the body and the hub. The dimensions of the edge, body, hub, collar, undercut, and step may be similar to Figure 1 the dimensions of the corresponding features of prior art load plates. The undercut and the step are recessed into the body relative to the edge and the hub such that raised markings 216 may be provided in the body. Chamfers (not shown) may also be provided on the outer corners of the edge. As noted, the outer dimensions of the plate are preferably similar to the outer dimensions of a standard device, but may vary in different settings.

[0138] 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 the loss of material in the holes 222, 234. Higher density materials may also be added in different examples. One example is to use a metal plate disposed at the hub or inside the load plate to increase the overall density without overly increasing the thickness.

[0139] The silent weight plate can be made of an elastomer, such as rubber, pressed crumb rubber, polyurethane, or a mixture thereof. The hardness can be in the range of 60 to 90. An elastomer with a lower hardness can be used for a weight plate designated for home use. This will help keep the noise at an acceptable level for the home. A different hardness can be used in the shock absorber area relative to the rest of the silent weight plate.

[0140] Figure 3 is a front perspective view of an alternative silent weight plate 300. This is similar to Figure 2 the silent weight plate, except that the buffer area 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 walls 306 have a relatively wide base and a narrower top.

[0141] Figure 4 is a side perspective view of a silent dumbbell 400. The dumbbell includes a conventional hexagonal weight instrument dumbbell 404, with shock absorbers 402 provided around each weight instrument. The dumbbell 404 can be made of metal, and the shock absorbers 402 can be made of an elastomer. The holes in the shock absorbers are similar to Figure 2 the holes in the silent weight plate, or can be adjusted to fit the overall dimensions of the dumbbell.

[0142] Figure 5 is a side perspective view of an alternative silent dumbbell 500. The dumbbell includes a conventional hexagonal weight instrument dumbbell 404, with shock absorbers 502 provided around each weight instrument. The dumbbell 404 can be made of metal, and the shock absorbers 502 can be made of an elastomer. The holes in the shock absorbers are similar to Figure 3 the holes in the silent weight plate, or can be adjusted to fit the size of the dumbbell. The shock absorbers for either silent dumbbell ( Figure 4 or Figure 5 ) can have one or more flat outer surfaces (not shown) for storage and stacking. In a particular example, the shock-absorbing elastomer layer can be configured such that the weight instrument can retain the shape of a conventional hexagonal weight instrument dumbbell.

[0143] Figure 6 is a side perspective view of an improved kettlebell 600. The kettlebell 600 includes a conventional kettlebell 604, containing a plurality of shock absorber crescents 602 provided around the weight instrument. The kettlebell 600 can be made of metal, and the shock absorber crescents can be made of an elastomer. The holes in the shock absorber crescents are similar to Figure 2The holes on the silent weight plate, or modified as needed to fit the size of the kettlebell. The crescent part can be attached to the kettlebell by any known means, such as welding, gluing, pre-molding or other means. Six to eight crescent parts are radially arranged and joined at the bottom of the kettlebell. A sufficient number of crescent parts are added so that the metal kettlebell inside the crescent part does not hit the ground when lowered.

[0144] Figure 7 is a front perspective view of an alternative improved kettlebell 700. The kettlebell includes a conventional kettlebell 604 with several shock-absorbing crescent parts 702 arranged around the weight apparatus. The kettlebell 604 can be made of metal, and the shock-absorbing crescent parts 702 can be made of elastomer. The holes on the shock-absorbing crescent parts are similar to Figure 3 the holes on the silent weight plate, or adjusted according to the size of the device. The crescent part can be attached to the kettlebell by any known means, such as welding, gluing or pre-molding. In this example, six to eight crescent parts are radially arranged and joined at the bottom of the kettlebell, but more or fewer crescent parts can be used. As in other examples discussed herein, the holes can only partially extend through the shock-absorbing crescent part. Alternative designs of silent kettlebells without shock-absorbing crescent parts can include a heavier inner part and an elastomer outer part with shock-absorbing holes of different sizes and arrangements. In such an embodiment, the holes can be formed to extend radially or at an angle towards the center of the kettlebell. In Figure 6 and Figure 7 the alternative embodiments shown, the ends of the crescent parts 602 and 702 facing the top of the kettlebell can be tapered to avoid sharp edges (not shown). In yet another embodiment, the shock-absorbing part of the kettlebell can be configured as a layer of elastomeric material instead of a crescent part, with holes in the elastomeric material layer surrounding the metal core of the kettlebell.

[0145] Figure 8 is a side perspective view of a crescent-shaped shock absorber 800 made according to the present invention. The crescent part has a thickness 810 of about 1 inch (25.4 mm). It has a height 812 of about 1 inch. It has a bow shape with a crescent angle 806 of about 90°. The radius of curvature to the inner surface 808 is about 8.75 inches (222.25 mm). Thus, the crescent part will conform to Figure 1 the outer curvature of the prior art weight plate. A single row of evenly spaced hexagonal first holes 811 is provided. In one example, the hole spacing 814 can be about 1 inch (25.4 mm). The hole width 816 is about 0.63 inch (16.002 mm). The radial walls between the holes each have a width 818 of about 0.38 inch (9.652 mm). The skin thickness 822 is about 0.13 inch (3.302 mm). In a particular implementation, reclosable 3M TM DualLockTM The front half of the fastener 804 is disposed on the inner surface of the crescent portion. The front half mates with the corresponding rear half of the DualLock fastener adhesively bonded to the outer radial surface of a conventional weight plate as Figure 1 shown. The crescent portion is formed by molding a thermoplastic elastomer compound Stantoprene TM 101 - 64 (item 802). The Stantoprene has a rated hardness of Shore A 69.

[0146] In one example, a conventional barbell weighing 135 lb was tested. The barbell had weight plates at each end in the Figure 1 shown style. The barbell was dropped from a height of 4' 10 inches (147.32 cm) onto a rubber mat covering a concrete floor. The noise of the impact was measured with a decibel meter. When the barbell was dropped without any crescent shock absorbers on the weight plates, 136 dB was recorded.

[0147] Another test was conducted using four crescent shock absorbers attached to the outer radial surface of the weight plates on the barbell using DualLock fasteners. The crescent portions wrap around the outer surface of each weight plate. The drop test was repeated. The recorded noise was only 95 dB, while the bounce increased slightly. It should be understood that the above test procedure can be used to assist in designing improved weightlifting training equipment with desired characteristics. For example, conducting the described tests on different hole designs can determine the optimal hole configuration for a desired noise level.

[0148] Figure 9 A front view showing another example of a silent weight plate and a perspective view of a barbell with the silent weight plate.

[0149] Referring to Figure 9 , another example of a silent weight plate 900 is shown, which is similar to the Figure 2 silent weight plate, except that there are at least two shock absorber regions 902, 908. The first region 902 includes holes 904 in a first circumferential row, may include holes 906 in a second circumferential row, and the second region 908 includes holes 910 in a third circumferential row, may include holes 912 in a fourth circumferential row.

[0150] In a preferred embodiment, the holes 904 in the first circumferential row and the holes 910 in the third circumferential row may be the same size and may have the same size as described for the first hole 222 of the silent weight plate 200 with reference to Figure 2 . Optionally, the holes 906 in the second circumferential row and the holes 912 in the fourth circumferential row may be the same size and may have the same size as described for the reference Figure 2the same dimensions as described for the second hole 234 of the silent weight plate 200. Other dimensions, including the inner radius of curvature of the inner corners of the holes 904, 906, 910, 912, the hole pitch, the wall width, the wall height, the overall height of each shock absorber area 902, 908 occupied by two rows of holes, and the skin thickness, may be the same as Figure 2 those provided in the example of. In a preferred example, the distance between the outer edge of the weight plate 900 and the outermost edge of the second shock absorber area 908 may be from 5 inches to 7.5 inches (127 mm to 190.5 mm), where the outermost edge of the second shock absorber area 908 is defined by a circle that contacts the point of each hole 910 closest to the outer edge of the weight plate 900.

[0151] In this example, by moving the holes towards the center of the plate, better control of the vibration and force transmitted from the ground when the plate is lowered can be achieved. By moving the holes towards the center, this allows the two solid portions of the plate to move slightly independently of each other when a large force is applied, for example, when lowering a barbell. The resulting reduction in force will reduce the stress on the underlying floor, thereby reducing overall noise and damage to the floor. The second shock absorber area 908 and the corresponding holes 910, 912 will also reduce the force applied to and from the collar, thereby reducing the likelihood of failure points. As before, the holes can be through-holes to simplify manufacturing or can be partially through to provide higher structural integrity. In the case of partially through-holes, a row of adjacent holes can alternate in a pattern where every other hole faces one direction (i.e., opens in one direction) and the adjacent holes face the other direction (i.e., opens in the other direction). This hole arrangement can be applied to all embodiments described in this application (i.e., Figures 3 to 11 ), and is intended to improve the structural integrity of the shock-absorbing portions of various weight apparatuses.

[0152] Figure 10 A front view showing an additional example of a silent weight plate and a perspective view of a barbell with a silent weight plate.

[0153] Referring to Figure 10 shows another example of a silent weight plate 1000, which is similar to the silent weight plate of Figure 9 , except that only an internal shock absorber area 1002 is present. This area 1002 includes holes 1004 in a first circumferential row and optionally holes 1006 in a second circumferential row.

[0154] In a preferred embodiment, the holes 1004 in the first circumferential row may be the same size as described for the first hole 222 of the silent weight plate 200 with reference to Figure 2 . The holes 1006 in the second circumferential row may be the same size as described for the Figure 2is the same as that described for the second hole 234 of the silent weight plate 200. Other dimensions, including the inner radius of curvature of the inner corners of the holes 1004, 1006, hole pitch, wall width, wall height, the overall height of the shock absorber area 1002 occupied by the two rows of holes, and skin thickness, may be the same as those provided in the example of Figure 2 or may vary as needed. In a preferred example, the distance between the outer edge of the weight plate 1000 and the outermost edge of the shock absorber area 1002 may be 5 inches to 7.5 inches (127 mm to 190.5 mm), where the outermost edge of the shock absorber area 1002 is defined by a circle that touches the point on each hole 1004 closest to the outer edge of the weight plate 1000.

[0155] In addition, it should be understood that the size and specifications of the holes can vary according to the optimal specifications determined through testing. In other words, testing procedures can be used to assist in designing improved weight plates, or weight equipment more generally, with the desired characteristics. For example, performing the described tests on different hole designs can determine the optimal hole configuration for the desired noise level and / or weight equipment.

[0156] In this example, by moving a row of shock absorber holes 1004, 1006 to the center of the plate, this can improve durability as the shock absorption changes on the outer ring.

[0157] Figure 11 A front view showing another example of a silent weight plate and a perspective view of a barbell with the silent weight plate.

[0158] Referring to Figure 11 , another example of a silent weight plate 1100 is shown. This example is similar to the Figure 10 silent weight plate, except that the inner shock absorber area 1102 is closer to the collar of the weight plate 1100. This area 1102 includes holes 1104 in a first circumferential row and optionally holes 1106 in a second circumferential row.

[0159] In a preferred embodiment, the size of the holes 1104 in the first circumferential row may be the same as that described for the first hole 222 of the silent weight plate 200 with reference to Figure 2 , or may vary as needed or be determined by design. The size of the holes 1106 in the second circumferential row may be the same as that described for the second hole 234 of the silent weight plate 200 with reference to Figure 2 . Other dimensions, including the inner radius of curvature of the inner corners of the holes 1104, 1106, hole pitch, wall width, wall height, the overall height of the shock absorber area 1102 occupied by the two rows of holes, and skin thickness, may be the same as those of Figure 2The dimensions provided in the examples are the same or can vary as needed or be determined by design. In a preferred example, the distance between the outer edge of the weight plate 1100 and the outermost edge of the shock absorber region 1102 can be 6 inches to 7.5 inches (152.4 mm to 190.5 mm), where the outermost edge of the shock absorber region 1102 is defined by a circle that contacts the point on each hole 1104 closest to the outer edge of the weight plate 1100.

[0160] In this example, by moving a row of shock absorber holes 1104, 1106 to the collar of the plate, this can improve durability as the shock absorption changes on the outer ring. By moving a row of shock absorber holes 1104, 1106 to the position where the rod passes through the plate, this can also reduce the force that causes damage to the collar. It should be understood that a separate rod hole or a rod hole in combination with a rod can be used as a handle to grip the plate and lift the plate off the ground.

[0161] Figure 12 A figure showing a front view of another example of the silent weight plate 1200 and a perspective view of a barbell with the silent weight plate. Figure 12 The weight plate 1200 of Figure 2 is a variation of the weight plate 200 shown, where high-density foam is added to the open space of the shock absorber holes on the outer ring. In this example, by adding foam to the open space of the shock absorber holes, all the advantages of the Figure 2 weight plate 200 are retained, and there are additional benefits of reducing noise, reducing stress, and increasing durability.

[0162] Although this example shows adding foam to all the holes, many different variations can be provided. For example, foam can be added only to the holes in the first circumferential row and not to the holes in the second circumferential row. Conversely, foam can be added only to the holes in the second circumferential row and not to the holes in the first circumferential row. Additionally, foam can be added only to half of the holes arranged in any type, such as every other hole or adding the foam only on one side of the weight plate 1200. This example can be applied to all the embodiments shown; in other words, in all the embodiments described throughout the application, foam can be used to fill the holes. Other materials, such as elastomers, gels, or other materials, can also be used to fill the holes.

[0163] On the other hand, a flat plate of elastomer with a shock absorber region can be used as a protective pad. The shock absorber region can be similar to the above-mentioned region. Thus, when the weight equipment is lowered onto this pad, the pad will suppress noise without overly increasing the bounce. The shock pad can be made by extrusion.

[0164] Figure 13 A figure showing a silent weight plate formed by a two-component molding process of one or more materials.

[0165] Referring toFigure 13 , a method of manufacturing a silent weight plate 1300 and a silent weight plate 1300 formed using this method are described. According to this example, the central section 1310 of the plate 1300 can be molded onto the outer ring 1320 during a two-component molding process. This manufacturing process will enable the central section 1310 of the plate 1300 to be molded in a higher density rubber, thereby achieving reduced bounce and greater durability.

[0166] For example, the central section 1310 can be made of rubber having a density in the range of 50 Shore hardness to 70 Shore hardness, preferably in the range of 55 Shore hardness to 70 Shore hardness, and most preferably in the range of 59 Shore hardness to 69 Shore hardness. The outer ring 1320 can be made of rubber having a density in the range of 70 Shore hardness to 90 Shore hardness, preferably in the range of 75 Shore hardness to 90 Shore hardness, and most preferably in the range of 79 Shore hardness to 89 Shore hardness. High-density or hard weight plates have less bounce and are more durable than low-density plates. Thus, at least one advantage of the higher density outer ring 1320 includes providing a more durable and less elastic weight plate while maintaining the shock-absorbing advantages of the lower hardness central section 1310.

[0167] In another example, the central section 1310 can be formed of rubber having a higher density than the rubber forming the outer ring 1320. In other words, different from the previous example, the lower density section can be formed on the outside, while the higher density section is formed on the inside. In another example, the central section 1310 and the outer ring 1320 can be formed of different density materials or different materials together, including any one or more of rubber, polymer, metal, other elastomers, or other materials.

[0168] In one example, the method of manufacturing the weight plate 1300 includes molding an inverted T-shaped groove 1315 in the central section 1310 of the plate 1300, which is formed circumferentially around the entire outer ring, as shown in the cross-sectional view of the weight plate 1300. After the central section 1310 is cured or partially cured, the outer section 1320 can be molded with a T-shaped protrusion 1325 formed circumferentially around the entire outer section 1320, which corresponds to the T-shaped groove 1315 of the central section 1310. In this example, the outer section 1320 is also molded to include a first circumferential row of holes 1330 and a second circumferential row of holes 1335. This results in the weight plate 1300 having a hole arrangement that is the same as Figure 2is the same as that provided in the weight plate 200 in the example, but the weight plate 1300 is formed of one or more materials having different properties. Although the example describes the T-shaped groove 1315 and the T-shaped protrusion 1325, it should be understood that many other shapes can be used for the groove and the protrusion, such as corresponding square, triangular, U-shaped, and so on. Additionally, although the example describes the groove and the protrusion around the entire circumference of the weight plate 1300, it should be understood that the groove and the protrusion can be formed around one or more local sections around the weight plate 1300.

[0169] In addition, although the example results in the weight plate 1300 having the same hole arrangement as the hole arrangement provided in the weight plate 200 in the Figure 2 example, it should be understood that any of the described and envisioned examples can also be formed according to this method. In other words, the inner section can also be molded to be perforated to form a weight plate 900 as provided in the Figure 9 example, or only the inner section can be molded to be perforated to form weight plates 1000, 1010 as provided in the Figure 10 and 11 examples. Additionally, in all of these examples, the resulting weight plate 1300 can include holes filled with foam, as described in the instructions provided in connection with Figure 12 this.

[0170] Sound tests were conducted using the example prototype of the above-described weight plate as shown in Figure 2 this.

[0171] The test parameters used were as follows:

[0172] Weight plate brand: Rogue Echo-88 Hardness weight plate

[0173] System weight: 95 lb (2 x 45 lb weight plates, 1 x 5 lb wooden dowel)

[0174] Barbell: Wooden dowel 2”

[0175] Floor: Standard 3 / 4” rubber mat on concrete

[0176] Collars: Clout fitness collars

[0177] Distance of the decibel meter from the barbell: 4

[0178] The results of the test are described in Table 1 below. Referring to Table 1, the Rogue echo result is the dB value without using the full-scale model, and the Stealth 1Strip SWL full-scale model result is the dB value using the full-scale model. The delta is the difference in values with and without the prototype, and the other values, including the reduction percentage, average reduction percentage, average dB reduction, and percentage of noise eliminated, are based on the calculated delta.

[0179] Table 1

[0180]

[0181] Those skilled in the art will recognize that the described examples are not limited to any specific device size. Additionally, 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 weight plates are primarily formed of rubber. Those skilled in the art will recognize that other diameters, types, and thicknesses of preferred materials can be utilized when considering the preferred shock-absorbing characteristics and different applications that can be determined and optimized, for example, via the sound tests described above.

[0182] Additional configurations are envisioned as part of all the embodiments discussed above. The modification is based on the "sealing" of the outward-facing holes, similar to the familiar honeycomb seal. The seal can be achieved with a membrane covering the outward-facing openings to protect them from dirt without affecting the overall design and / or efficiency of the holes. The method of sealing the outward-facing holes for this purpose will be obvious to those of ordinary skill in the art. This can include, but is not limited to, using additional elastomeric or non-elastomeric materials for sealing, such as transparent or opaque rubber, plastic, or polymeric materials, but is not limited thereto.

[0183] Figure 14 A diagram showing another embodiment of the present invention including a slip design variation for use with a weight plate or other weightlifting equipment.

[0184] In this design modification, the silent (or Stealth) weightlifting slip variation allows the user to add silent technology to one (or more) of their existing plates. This variation uses the same sound and shock-absorbing technology as the full-plate version discussed above. However, unlike molding the entire plate as discussed in the various examples above, the slip version only includes the crescent portion and the flexible rubber inner edge or ring, which allows the shock-absorbing section to be forcibly slipped onto an existing weight plate.

[0185] In Figure 14 this design modification is shown, where Figure 14 (A) in shows a side view of the shock-absorbing slip section 1400;Figure 14 In (B), the cross-section of the shock-absorbing slip section shows the retaining fingers or lateral extensions 1410; and Figure 14 In (C), a side view of the shock-absorbing section 1400 mounted on an existing plate. In Figure 14 In (A), the slip ring design 1400 has an outer edge composed of two rings with hexagonal holes and sides extending downward along the outermost part of the existing weight plate. It will be understood that, as previously discussed, the slip design can use different local hole configurations or hole shapes instead of through-holes. These holes are used to absorb shock when the weightlifter lowers the barbell. In Figure 14 The lateral extensions 1410, best shown in (B), enable the rings of noise-absorbing holes to slide forcibly on 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 can be tapered, resulting in beaded sections to increase friction and retention (similar to a bicycle tire fitted on an inner tube). The sides have a certain ductility (i.e., the ability to deform under compressive stress) to be able to slide on the plate and also have a certain elasticity, so that the material deformed under load returns to its original dimensions when unloaded. Two bumps 1420 at the ends of the lateral extensions hold the sliding part fixed on the plate. For example, if vulcanized rubber is used for the lateral extensions, durability is usually not a problem.

[0186] Figure 14 In (C), the fully assembled design is shown, where the slip sound-absorbing section is mounted on an existing plate. It will be understood that different slip design configurations are possible, where a single-piece circular sound absorber can be replaced by multiple sectors that are separately mounted and glued together. One such design modification can use two or more sectors (e.g., as Figures 6 to 8 shown), which are separately mounted and fixed together, for example, by gluing, to stay in place. The multi-sector circular slip design can also be accomplished by using slits on the sides and a belt or leather passing through the central hole of the weight plate (where the bar passes through) and connecting to the other side.

[0187] Referring to Figure 14 In (B), another potential design modification includes a sound absorber where the circular absorber is cut in half vertically in the middle, resulting in two parts that can be fixed together during use.

[0188] Further referring to the slip design, it will be understood that the sides will be elastic and should be difficult to place on the plate and, correspondingly, difficult to disengage from the plate in use. Conceptually, this design is similar to a bicycle tire on an inner tube, a fitted sheet on a mattress, or a swim cap on the head. When using a lower hardness rubber on the sides, this slip design should be flexible enough to be difficult to fit but conforming.

[0189] Another possibility is to add small slits in the rubber to relieve some of the tension. This change may require a strap to pass through the center hole of the weight plate (where the bar passes through) and be attached on the opposite side to hold the slip in place.

[0190] In different examples, the size of the plate will indicate different sizes of slip buffers, or the end user will use them only at weights such as 25 and 45 lb (11.34 and 20.41 kg respectively). The requirements here outweigh the financial burden and the underestimated cost of floor repairs.

[0191] As will be understood by those skilled in the art, other modifications that facilitate the installation of the absorber onto existing equipment are possible.

[0192] Figure 15 A figure showing a front view, side view, and perspective view of a barbell with two slip-deforming silent weight plates.

[0193] This figure shows multiple front views, side views, and perspective views of a silent (or Stealth) weightlifting slip option in a specific example. Two weight plates on the barbell are shown, without limiting the type of equipment to which the slip design is suitable. It should be noted here that the inner edge of the Stealth weightlifting slip ring extends 4 to 10 inches beyond the outer edge of the existing weight plate. In one example, these sides may have a raised texture on the bottom side and a rubber tube at their outermost edge to increase friction and stay on the weight plate.

[0194] Figure 14 and Figure 15 The design examples shown all illustrate a slip deformation on an existing weight plate. This slip deformation may slightly increase the total diameter of the weight plate and is therefore not suitable for competition use. However, for the average user as well as trained professional athletes, this may be a small price to pay for the significant reduction in noise and damage that results. The slip design may also slightly increase the weight. This issue can be remedied by reducing the weight of the bar or adjusting other weight equipment used during the lift. Naturally, more than two plates can be attached to the barbell. In this case, in different embodiments, only the plate with the largest diameter can be equipped with a sound absorber.

[0195] Figure 16FIGURES showing a Stealth ball with sound absorption from different perspectives, including exploded and assembled configurations in one example.

[0196] In many weightlifting rooms, CrossFit boxes, and gyms, one can find variations of the fitness medicine ball. The fitness medicine ball (exercise ball, stability ball, or gym equipment ball) is a weighted ball approximately equal in diameter to the shoulder that is often used in rehabilitation and strength training. Other variations of a similar type include padded balls for throwing, sand balls for slamming and lifting, and Atlas stones for lifting. Currently, users are required to purchase one ball for each weight implement they intend to throw, slam, or lift. For example, Atlas stones, as a type of lifting stone, typically consist of several stones of increasing weight that are placed on top of podia of different heights. Atlas stones are cast by gym owners using concrete molds and are often lifted to the shoulders of weightlifters and then dropped to the ground, causing noise and severe damage to the floor.

[0197] By combining a Silent (Stealth) weight plate with two sound-absorbing hemispheres, as Figure 16 shown, it is possible to develop the first adjustable fitness medicine ball and Atlas stone that utilize equipment already available in the gym. One can lift and slam without disturbing the gym, avoid dealing with sand and other fillers, or worry about damaging the floor. By loading with Stealth Weight Lifting (SWL) weight plates, this design addition will also allow for wider use of this type of lifting in group and individual training settings.

[0198] As Figure 16 shown, according to one example, the weight plate can be easily used to fabricate an adjustable fitness medicine ball that complements existing gym equipment. Figure 16 (A) through (F) in FIG. show different perspective views of the "Stealth ball" in a specific example using the technology of the present invention. As shown, the Stealth ball is designed as an attachment to the Stealth weight plate and consists of two hemispheres with a maximum outer diameter of approximately 455 mm to match the diameter of the corresponding plate. These hemispheres are made of an elastomeric material and are internally supported and secured with a set of threaded connectors of variable length with a center diameter of 2" (5.08 cm). If the user wants to increase the weight, longer connectors can be provided.

[0199] As Figure 16 shown in (A) through (C) and (E) in FIG., the sides of the hemispheres can have space to place logos, trademarks, trade dress, or other information. Figure 16The (H) therein is a decomposed side view of a Stealth ball in an example, showing the main components: two hemispheres, one or more weight plates (shown as two in this case), and a threaded connector. Figure 16 The (G) therein shows an exploded perspective view of the Stealth ball, showing the use of sound-absorbing material for the corresponding Stealth plates. Figure 16 The (F) therein is a side view of an assembled Stealth ball as a spare. Various design modifications, including dimensions (larger or smaller diameter), shape (the spherical shape can be replaced by other shapes), weight (multiple additional plates), will be obvious to those skilled in the art.

[0200] Figure 17 is a decomposed variant of a silent Stealth ball in an example. This figure 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 plates. Next, the user can screw the length of the connector into one of the hemispheres and load 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 plates.

[0201] Figure 18 is Figure 17 a fully assembled variant of the silent Stealth ball therein.

[0202] As described above, in different examples, there can be various variations in dimensions, shape, and weight. One such possibility of the assembled includes the following design figures: Possible exemplary weight loadings of the Stealth ball: Hemisphere - 4.5 lb (2.041166 kg); Threaded connector - 1 lb (0.4535924 kg); 2 x 45 lb (20.41166 kg) plates - 90 lb (40.82331 kg); Hemisphere - 4.5 lb (0.4535924 kg); Total: 100 lb (45.35924 kg). In other examples, fitness equipment of different dimensions and weights can be used.

[0203] Those skilled in the art will understand that changes can be made to the above-described embodiments without departing from their broad inventive concept. Therefore, it is understood that the invention disclosed herein is not limited to the specific embodiments disclosed, but is intended to cover modifications within the spirit and scope of the present invention.

Claims

1. A noise absorption article for use with a weight equipment object, the noise absorption article comprising: A first part made of an elastomeric material, the first part comprising a plurality of spaced-apart holes for absorbing noise generated when the weight equipment object is placed on a solid surface, the plurality of spaced-apart holes including one or more through-holes extending through the entire first part; and A laterally extending portion made of an elastomeric material, the laterally extending portion being shaped to correspond to a part of the weight equipment object to mount the noise absorption article to the weight equipment object, Among them, The weight equipment object being a weight plate, Wherein the laterally extending portion enables the noise absorption article to be mounted to the weight plate in a slip-fit manner, Wherein the noise absorption article has two symmetrical components assembled together around the entire outer periphery of the weight plate, and Wherein the laterally extending portion is provided with grooves to facilitate mounting the noise absorption article on the weight plate.

2. The noise absorbing article according to claim 1, wherein, The noise absorption article is shaped as a sector for fitting on a part of the outer periphery of the weight plate.

3. The noise absorbing article according to claim 1, wherein, The noise absorption article has an annular shape fitted around the entire outer periphery of the weight plate.

4. A noise absorption article for use with a circular weight plate, the noise absorption article comprising: A single circular body made of an elastomeric material, the inner diameter of the body corresponding to the outer diameter of the weight plate and the shape and dimensions of the body being configured to be coupled to the outer diameter of the weight plate, and a shock absorber region comprising a plurality of spaced-apart holes within the body for absorbing noise generated when the weight plate is placed on a solid surface, the plurality of spaced-apart holes including one or more through-holes extending through the entire body; and A laterally extending portion made of an elastomeric material, the laterally extending portion protruding radially inward from the body and being shaped to correspond to the sidewall of the weight plate to mount the noise absorption article to the weight plate, Among them, The laterally extending portion enables the noise absorption article to be mounted to the weight plate in a slip-fit manner, Wherein the noise absorption article has two symmetrical components assembled together around the entire outer periphery of the weight plate, and Wherein the elastomeric material of the laterally extending portion is deformable under compressive stress to enable slipping on the weight plate, and the elastomeric material of the laterally extending portion has elasticity such that the elastomeric material deformed under load resumes its original dimensions when the compressive stress is released.

5. The noise absorbing article according to claim 4, wherein, The body comprises two or more sectors that can be separately mounted to the weight plate and can be fixedly joined together as a single piece during installation.

6. The noise absorbing article according to claim 4, wherein, The noise absorption article is designed to be sized for use with one of a 25-pound weight plate or a 45-pound weight plate.

7. The noise absorbing article according to claim 4, wherein, The plurality of spaced-apart holes are arranged in two or more hole rings.

8. The noise absorbing article according to claim 7, wherein, The holes in one of the two or more hole rings are larger in size than any other holes.

9. The noise absorbing article according to claim 4, wherein, The plurality of spaced-apart holes in the shock absorber region include one or more partial holes that do not extend through the entire body.

10. The noise absorbing article according to claim 4, wherein, The plurality of spaced-apart holes in the shock absorber region includes a combination of through holes that extend through the entire body and partial holes that do not extend through the entire body.

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