Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Patent
1993-10-26
1994-06-28
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
482903, A63B 6916, A63B 2124
Patent
active
053242424
ABSTRACT:
An exercise apparatus includes a frame assembly, a flywheel unit mounted rotatably on the frame assembly, a manually operated driving unit for driving rotatably the flywheel unit, and a magnet-type resistance generator to provide resistance to rotation of the flywheel unit. The resistance generator includes a central shaft mounted on the frame assembly and formed with an intermediate worm section, and a rotary plate mounted rotatably on the central shaft on one side of the worm section and driven rotatably by the flywheel unit. The rotary plate has a circular plate portion and a peripheral ring which extends from a front side of the circular plate portion. A movable slide seat is mounted movably on the central shaft and is provided with a worm shaft unit which meshes with the worm section. The slide seat has an outer periphery which is provided with a plurality of angularly spaced magnets that are disposed adjacent to the peripheral ring of the rotary plate. A motor control unit activates a motor to rotate the worm shaft unit and cause movement of the slide seat relative to the rotary plate to vary the strength of a magnetic field applied by the magnets on the peripheral ring of the rotary plate and vary correspondingly magnetic resistance to rotation of the rotary plate and the flywheel unit.
REFERENCES:
patent: 5094447 (1992-03-01), Wang
patent: 5145480 (1992-09-01), Wang
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