Exercise devices – Involving user translation or physical simulation thereof – Stair climbing
Patent
1992-03-02
1993-09-07
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Stair climbing
482116, 482147, A63B 2204, A63B 2214
Patent
active
052423409
ABSTRACT:
An exercise apparatus for simulating stair climbing, stair hopping and downhill skiing is disclosed. The apparatus includes a base with a vertical support extending upwardly therefrom and a handrail supported by the vertical support. Two foot pedals are pivotally connected to the vertical support. Each foot pedal has a roller chain connected at one end to the foot pedal. A spring is connected between the other end of each roller chain and the foot pedal at a position spaced from the point of connection of the roller chain. The two roller chains are looped over drive chain sprockets which are rotatably mounted by clutch bearings on a shaft in spaced apart relation. The drive shaft extends through and is rigidly secured to a friction drum. A chord is looped around the drum between a spring bias and a length adjustable rod thereby forming a variable resistance mechanism. Depressing the foot pedals results in the clutch bearings engaging the shaft thereby rotating the friction drum. The force required to depress the foot pedals is set by adjusting the resistance mechanism. Releasing the foot pedal causes the bearing to disengage from the shaft and the bias springs return the pedal to the up position.
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