Exercise devices – Involving user translation or physical simulation thereof – Stair climbing
Patent
1991-11-08
1995-05-30
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Stair climbing
482 6, 482900, A63B 2304
Patent
active
RE0349593
ABSTRACT:
An exercise apparatus that simulates stair-climbing for a user. The apparatus includes a frame having a base, and a plate on the frame perpendicular to the base. A right pedal and a left pedal are on opposite sides of the plate. A drive system assembly on the plate has a right pedal sprocket, a left pedal sprocket, and a drive sprocket, wherein the right sprocket or left sprocket turn the drive sprocket in one direction only and the right and left sprockets are free to overrun in the opposite direction. The right pedal oscillates between an upper position at rest and a lower, rearward position under the weight of the user and drivingly engages the right pedal sprocket. The left pedal, operating independently of the right pedal, oscillates between an upper position at rest and a lower, rearward position under the weight of the user and drivingly engages the left pedal sprocket. A speed increasing transmission has an input and an output. A continuous chain drivingly engages the drive sprocket and the transmission input. A continuous belt engages the transmission output and an alternator which acts as a dynamic brake. A load resistor connected to the alternator is capable of absorbing the electrical energy output of the alternator. An alternator control and monitor is provided.
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Crow Stephen R.
Stairmaster Sports Medical Products, Inc.
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