Wrist curl machine

Details Wrist curl machine Wrist curl machine

1978-11-01

1983-02-15

Pinkham, Richard C.

Undertaking

272118, 172143, A63B 2300

Patent

active

043737170

ABSTRACT:
Disclosed herein is a wrist curl machine fabricated to isolate the wrist muscle and lower forearm muscle for development to the exclusion of all others and is defined by three hand grip areas, two sprockets associated with these three hand grip areas and chain elements operatively connected with these sprockets which in turn traverse through weights and a counter balance system whereby the counter balance system negates the weight of the elements associated with the structure and the variable weights themselves provide the total resistance to the work done by the wrist or the forearm of the exerciser. The framework is associated with and supports the hand grip, sprocket, chain, counter balance, and weight mechanism so that the machine can be used when the exerciser is erect.

REFERENCES:
patent: 3495824 (1970-02-01), Cuinier
patent: 3640528 (1972-02-01), Proctor
patent: 3708166 (1973-01-01), Annas
patent: 3743282 (1973-07-01), Zinkin
patent: 3752473 (1973-08-01), Lalanne
patent: 3850431 (1974-11-01), Winans
patent: 3912261 (1975-10-01), Lambert
patent: 4149714 (1979-04-01), Lambert

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