US 12,233,304 B2
Weightlifting disc with a reinforcement device
Camilla Schough, Gullbrandstorp (SE); and Stefan Berg, Halmstad (SE)
Assigned to ELEIKO GROUP AB, Halmstad (SE)
Appl. No. 17/923,046
Filed by Eleiko Group AB, Halmstad (SE)
PCT Filed May 4, 2020, PCT No. PCT/SE2020/050441
§ 371(c)(1), (2) Date Nov. 3, 2022,
PCT Pub. No. WO2021/225478, PCT Pub. Date Nov. 11, 2021.
Prior Publication US 2023/0146167 A1, May 11, 2023
Int. Cl. A63B 21/072 (2006.01)
CPC A63B 21/0728 (2013.01) 18 Claims
OG exemplary drawing
 
1. A weightlifting disc that is mountable on a bar, the weightlifting disc comprising:
a disc part of elastomeric material, wherein the disc part comprises an outer edge and an inner edge, wherein the inner edge is arranged close to a center of the disc part and the outer edge of the disc part is distal from the center of the disc part,
at least one reinforcing device encapsulated in the disc part circumferentially around the center, wherein the reinforcing device is located between the outer edge and the inner edge of the disc part, wherein an inner edge of the reinforcing device is further located at a predetermined distance from the inner edge of the disc part such that a first portion of the elastomeric material is located radially between the inner edge of the disc part and the inner edge of the reinforcing device, a second portion of the elastomeric material is located radially between the outer edge of the disc part and an outer edge of the reinforcing device, and a third portion of the elastomeric material is located axially between the reinforcing device and respective side walls of the disc part; and
a hub part comprising a first half and a second half that are connected to each other and respectively located on opposite axial sides of the disc part with the inner edge of the disc part pressed between the first and second halves of the hub part, wherein an axial length of the inner edge along a direction of a central axis is smaller than an axial distance between the side walls of the disc part along the direction of the central axis, wherein the halves of the hub are respectively seated in indentations in opposite sides of the disc part that are formed by a difference between the axial distance between the side walls of the disc part and the axial length of the inner edge so that the second and third portions of the elastomeric material of the disc part radially surround the hub part and the first portion of the elastic material is located between the halves of the hub, and wherein the hub part comprises a center hole for receiving the bar; and
wherein the reinforcing device comprises an outer ring, an inner ring, and an annular body that connects the outer ring and the inner ring, wherein the outer ring is wider than the inner ring along the direction of the central axis; and
wherein the annular body is tapered in the radial direction between the outer ring and the inner ring.