Undertaking
Patent
1984-08-27
1987-08-11
Hafer, Robert A.
Undertaking
272130, A63B 2304, A63B 2100
Patent
active
046856668
ABSTRACT:
A trackless climbing simulation exercise device comprising an inclined plane, a pair of interconnected hydraulic cylinders affixed to the inclined plane in a fashion allowing angular movement, and a pair of steps one of each hung from the cylinder rods moving freely on the inclined plane and moveable in a generally inclined vertical direction to effectuate stair climbing exercise.
REFERENCES:
patent: 2079594 (1937-05-01), Clem
patent: 3529474 (1970-09-01), Olson et al.
patent: 3758112 (1973-09-01), Crum et al.
patent: 3970302 (1976-07-01), McFee
patent: 4480832 (1984-11-01), Bulmash et al.
patent: 4496147 (1985-01-01), DeCloux et al.
D'Arrigo Kathleen J.
Hafer Robert A.
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