Pedal stroke range adjusting device

Details Pedal stroke range adjusting device Pedal stroke range adjusting device

1990-05-18

1992-11-10

Luong, Vinh T.

Machine element or mechanism

Elements

Cranks and pedals

745944, 745941, G05G 114

Patent

active

051614308

ABSTRACT:
A pedal radius adjustment device comprised of a frame mounted onto the existing crank arm of a bicycle or similar exercise machine by a screw passing through the existing crank arm pedal mounting hole and attaching to the adjustment frame, and by a bracket mounted to the adjustment frame around the crank arm. The contact side of the frame is grooved to align with the pedal crank arm. The pedal is attached to a sliding block within the adjustment frame and is adjusted by a hand operated pull T-pin at multiple, known-radius, settings prearranged on the adjustment frame. In another embodiment, the T-pin is held in place by magnetic attraction between the T-pin and the sliding block.

REFERENCES:
patent: 2533011 (1950-12-01), Hill
patent: 3888136 (1975-06-01), Lapeyre
patent: 4225130 (1980-09-01), Zimmerman
patent: 4648287 (1987-03-01), Preskitt
patent: 4706516 (1987-11-01), Xi
patent: 4850245 (1989-07-01), Feamster et al.
patent: 4867441 (1989-09-01), Blakeman
patent: 4973046 (1990-11-01), Maxwell

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