Undertaking
Patent
1986-12-12
1988-04-19
Apley, Richard J.
Undertaking
24581, 24590, 403318, 403359, A63B 1300
Patent
active
047384468
ABSTRACT:
A securing mechanism for holding an exercise weight-disc on the end of the lifting bar while allowing a modicum of rotational movement in the disc as the bar is being manipulated by the exerciser. A sleeve-like collarpiece, having a smooth cylindrical bore which has therein a serrated flange, is fitted over the threaded end of a weight lifting bar that has a longitudinal groove passing through the set of threads. The collarpiece is slid onto the threaded end, and into registry with a weight-disc and thereafter rotated so that its rotatable gasket-surfaced face snubs against the weight-disc by virtue of the serrated flange engaging and working in cooperation with the bar threading.
A novel ball-bearing/race, inserted in the collarpiece face, and to which the gasket is affixed, provides a rotatably movable base which will allow the weight-disc(s) to undergo a somewhat constrained rotation as the bar is twisted during lifting exercises.
REFERENCES:
patent: 1779594 (1930-10-01), Hall
patent: 2066956 (1937-01-01), Williams
patent: 2708100 (1955-05-01), Sutliff
patent: 2708144 (1955-05-01), Carr
patent: 3837753 (1974-09-01), Weiste et al.
patent: 4579337 (1986-04-01), Oyeda
patent: 4638994 (1987-01-01), Gogarty
patent: 4668119 (1987-05-01), Galletti
patent: 4684284 (1987-08-01), Bradley, Jr.
Apley Richard J.
Bahr Robert W.
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