Land vehicles – Wheeled – Occupant propelled type
Patent
1996-08-22
1999-03-02
Boehler, Anne Marie
Land vehicles
Wheeled
Occupant propelled type
745944, 280261, 474218, B62M 100
Patent
active
058760539
ABSTRACT:
A pedal drive system imparts a rotational force, in part, through linear travel of the pedal. The system comprises parallel, dislocated first and second rotating shafts. A first left sprocket and a first right sprocket are each mounted on the first shaft. A second left sprocket and a second right sprocket are each mounted on the second shaft. A left chain is looped around the first left sprocket and the second left sprocket and engages the teeth of those sprockets. A right chain is, likewise, looped around the first right sprocket and the second right sprocket and engages the teeth of those sprockets. A right pedal is affixed to the right chain, and a left pedal is affixed to the left chain. The first shaft is affixed with a forward sprocket for rotation with the first left and first right sprockets. A driven wheel is affixed with a rearward sprocket. A drive chain is looped around the forward sprocket and the rearward sprocket, and engages the teeth of those sprockets. As force is applied to the pedals causing the first and second left sprockets and the first and second right sprockets to rotate, the forward sprocket rotates moving the drive chain. As the drive chain moves with rotation of the forward sprocket, the drive chain rotates the rearward sprocket because of the engagement of the rearward sprocket teeth with the chain.
REFERENCES:
patent: 3820820 (1974-06-01), Kutz
patent: 4173154 (1979-11-01), Sawmiller
patent: 5683321 (1997-11-01), Barnett
patent: 5690345 (1997-11-01), Kiser
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