Seated weight lifting leg press exercise machine

Details Seated weight lifting leg press exercise machine Seated weight lifting leg press exercise machine

1977-07-28

1979-04-17

Pinkham, Richard C.

Undertaking

272134, 272144, A63B 2106

Patent

active

041497147

ABSTRACT:
Disclosed herein is a seated leg press exercise machine comprising a seat which is adjustable on a trackway, a pair of foot platforms associated near the seat to allow one's feet to be placed thereon, a pivotal bar connecting these foot pedals so that horizontal displacement of one extremity of this pivot bar not only swings about an arc caused by the pivot, but is also connected at the extremity remote from the pivot with a linkage which indirectly lifts a pre-selected magnitude of weights. The indirect linkage includes a chain running through series of gears, a shaft fastened to one of the gears, a cam member attached to the shaft, a cable attached to the cam, and weights attached to the cable. Therefore, when the pedals are displaced in a horizontal sense, the linkage follow and react with this motion, and exercise work is done against the weights. Supporting the linkages, weights, seats and foot pedals is a framework.

REFERENCES:
patent: 1128911 (1915-02-01), Smith
patent: 2675236 (1954-04-01), Blickman
patent: 3116062 (1963-12-01), Zinkin
patent: 3734495 (1973-05-01), Nist et al.
patent: 3820782 (1974-06-01), Salkeld
patent: 3912261 (1975-10-01), Lambert
patent: 3917262 (1975-11-01), Salkeld

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