Hydraulic exerciser

Details Hydraulic exerciser Hydraulic exerciser

1979-09-04

1982-04-27

Johnson, Richard J.

Undertaking

272125, 272134, A63B 2100

Patent

active

043267076

ABSTRACT:
Hydraulic exerciser comprising a hydraulic control circuit, a single acting positive displacement pump, and an exercise machine designed using the control circuit and pump. With the hydraulic control circuit up to four modes and one combination of modes of exercising are possible; namely isometric, isodynamic, isokinetic, warmup and the combination of isodynamic and isokinetic. In addition the control circuit has a gage for registering the resistive force for all modes or combination of modes of exercising.

REFERENCES:
patent: 410533 (1889-09-01), Clayton
patent: 1188760 (1916-06-01), Hagenbucher
patent: 3348712 (1967-10-01), Hanson
patent: 3359802 (1967-12-01), Sollenberger
patent: 3387843 (1968-06-01), Chandler
patent: 3397884 (1968-08-01), Blasi
patent: 3451271 (1969-06-01), Knoblauch
patent: 3606318 (1971-09-01), Gilstrap
patent: 3784194 (1974-01-01), Perrine
patent: 3822599 (1974-07-01), Brentham

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