Exercising apparatus

Details Exercising apparatus Exercising apparatus

1982-09-30

1984-11-06

Johnson, Richard J.

Undertaking

272137, 18832111, A63B 2100

Patent

active

044808321

ABSTRACT:
A compact exercising device in which the contractable and expandable parts are arranged in axial alignment and include a hydraulic piston and cylinder resistance coupled with an axially entensible cable and pulley system. The cylinder has its opposite ends interconnected by a conduit which incorporates a metering valve which provides a preset resistance to flow of the fluid in one direction and allows the fluid to flow quickly with little resistance in the opposite direction.

REFERENCES:
patent: 1567517 (1925-12-01), Kisbey
patent: 2068578 (1937-01-01), Stronach
patent: 3359802 (1967-12-01), Sollenberger
patent: 3369403 (1968-02-01), Carlin
patent: 3387843 (1968-06-01), Chandler
patent: 3912265 (1975-10-01), Muir
patent: 3984102 (1976-10-01), Evans
patent: 4148479 (1979-04-01), Spector
patent: 4290599 (1981-09-01), Berger

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