Passive hydraulic resistance system

Details Passive hydraulic resistance system Passive hydraulic resistance system

1986-11-19

1988-02-23

Apley, Richard J.

Undertaking

417313, A63B 2100

Patent

active

047265833

ABSTRACT:
A exercising machine has a pivotal lever and includes a passive electrohydraulic resistance system which provides controlled resistance to lever movement. Hydraulic fluid which may leak from a piston-cylinder assembly, which comprises part of the system, collects in a sump and is sucked into the piston-cylinder assembly during the normal operating cycle of the exercise machine.

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patent: 4063726 (1977-12-01), Wilson
patent: 4223706 (1980-09-01), McGahey
patent: 4326707 (1982-04-01), Strelker
patent: 4354676 (1982-10-01), Ariel
patent: 4363481 (1982-12-01), Erickson
patent: 4452447 (1984-06-01), Lepley et al.
patent: 4478412 (1984-10-01), Muir

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