1979-01-29
1981-02-10
Marlo, George J.
Undertaking
272125, 272128, 272130, A63B 2106, A63B 2120, A63B 2122
Patent
active
042497256
ABSTRACT:
In order to be resisted by a force of given magnitude from the apparatus, the user must accelerate through the exercising stroke he makes on the machine. A rotor within the machine is spun when the user moves the operating lever through its stroke, and the inertia of the spinning rotor forces the user to constantly accelerate during the exercising stroke if the user is to obtain resistance that will match his input efforts. Weighted drag paddles on the rotor retard spinning thereof as a result of their weight and interaction with a fluid medium during such spinning and consequently provide a source of resistance to the user's effort to spin the rotor, the fluid medium preferably being ambient air. The magnitude of the resistance generated by the rotor at any given speed of rotation thereof can be adjustably increased or decreased prior to the exercising stroke by changing the radial position of the paddles. The paddles are mounted on carriages which may be shifted selectively along radial tracks by an external adjusting knob coupled with a tubular shaft that, when adjustably rotated relative to the internally received main shaft of the rotor, drives a chain connected to the carriages.
REFERENCES:
patent: 1279633 (1918-09-01), Allen
patent: 3731922 (1973-05-01), Jungreis
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