Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Patent
1993-07-27
1994-05-10
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
482 5, 482903, A63B 6916, A63B 2124
Patent
active
053103920
ABSTRACT:
A magnet-type resistance generator is to be used with an exercise apparatus which has a flywheel and includes a magnet unit with a curved housing which confines a groove and which has opposite inner wall surfaces that are respectively provided with a plurality of permanent magnets which extend into the groove. A tubular sleeve extends from a rear side of the curved housing and has a distal end which is formed with an internally threaded portion. The tubular sleeve is received slidably in a tubular slide seat. A guide bolt extends axially into the slide seat and has a threaded portion that engages the internally threaded portion of the tubular sleeve. A slide potentiometer has a slider connected to the curved housing of the magnet unit. An instrument control unit activates a motor to rotate the guide bolt axially and cause the tubular sleeve to move slidably in the slide seat, thereby moving the magnet unit toward or away from the periphery of the flywheel so that the periphery of the flywheel can extend into the groove of the curved housing by a desired depth in order to attain a desired resistance to rotation of the flywheel. The slider moves with the magnet unit to permit the slide potentiometer to control the instrument control panel to deactivate the motor when the desired depth has been reached.
REFERENCES:
patent: 4752066 (1988-06-01), Housayama
patent: 4775145 (1988-10-01), Tsuyama
patent: 5031901 (1991-07-01), Saarinen
patent: 5094447 (1992-03-01), Wang
patent: 5145480 (1992-09-01), Wang
Crow Stephen R.
Johnson Metal Industries Co., Ltd.
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