Undertaking
Patent
1975-04-30
1976-10-05
Pinkham, Richard C.
Undertaking
A63B 2100
Patent
active
039841022
ABSTRACT:
Exercising equipment having a base, a water receivable tube upstanding from the base and a body incorporating a valve member, the body is suspended in water in the tube and is pulled upwardly by a person exercising, the valve member acts to apply a restraining force against upward movement of the body but permits downward movement of the body by a gravitational force on the body.
REFERENCES:
patent: 3587319 (1971-06-01), Andrews
patent: 3640528 (1972-02-01), Proctor
patent: 3717342 (1973-02-01), Haney et al.
patent: 3861675 (1975-01-01), Hopper
Browne William R.
Pinkham Richard C.
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