1986-11-19
1987-08-25
Apley, Richard J.
Undertaking
272130, A63B 2100
Patent
active
046887911
ABSTRACT:
A device is described, the use of which results in total body exercise which closely mimics that derived from swimming. Upper and lower extremities and trunk are all exercised with the body in an upright, slightly forward-tilted posture, and totally supported by the user's arms and legs, in an outstretched posture somewhat simulating the free-style swimming position. In the embodiments shown, the resistance against which the user works consists of marine propellers mounted on a shaft immersed in a tank filled with viscous fluid. The motor force generated by the user's rotation of the hand and foot cranks on sprockets is mediated by drive chains to a common sprocket which energizes the propeller shaft in the liquid-filled tank. The constantly-maintained 90 degrees out-of-phase mutual positions of the hand operated versus the foot operated cranks prevent "pulsing" of the load/resistance, and thus simulate the smooth sensation of non-varying resistance as is experienced by swimming.
REFERENCES:
patent: 1728103 (1928-03-01), Chaligne
patent: 2020992 (1935-11-01), Caplan
patent: 3213852 (1965-10-01), Zent
patent: 3991749 (1976-11-01), Zent
patent: 4249725 (1981-02-01), Mattox
Apley Richard J.
Crow S. R.
Dority Julian W.
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