Resistance mechanism for exercise equipment

Details Resistance mechanism for exercise equipment Resistance mechanism for exercise equipment

1990-06-18

1992-05-05

Crow, Stephen R.

Exercise devices

Involving user translation or physical simulation thereof

Rowing

482113, A63B 2100

Patent

active

051101181

ABSTRACT:
A resistance mechanism for exercising equipment that includes a frame structure on which is mounted a positive-displacement rotary pump, the pump having a housing with a rotor that pumps fluid through a closed circuit which includes a reservoir and conduit leading to the pump and conduit leading from the pump to the reservoir. The pump rotor is connected to an actuator for rotating the rotor and pumping fluid through the circuit with the circuit having a valve to constrict the conduit leading from the pump to vary the force required to pump fluid through the closed circuit.

REFERENCES:
patent: 2725231 (1955-11-01), Hoover
patent: 3495824 (1970-02-01), Cuinier
patent: 3572700 (1971-03-01), Mastropaolo
patent: 4579335 (1986-04-01), Centatanti
patent: 4582318 (1986-04-01), Giannelli et al.
patent: 4979735 (1990-12-01), Stewart

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