Single gear train bicycle drive mechanism

Details Single gear train bicycle drive mechanism Single gear train bicycle drive mechanism

1997-08-26

1999-11-16

Herrmann, Allan D.

Machine element or mechanism

Elements

Cranks and pedals

74435, 74437, 280260, G05G 114, B62M 102

Patent

active

059837519

ABSTRACT:
Apparatus to drive a bicycle wherein two pedals move in a non-fixed, non-180 degree relationship to each other. As the pedal that is being powered by the user moves through an arc less than 180 degrees, the unpowered pedal moves through more than 180 degrees to a point where it is in a favorable position to be powered by the user. Two different systems are disclosed, each producing the desired relative pedal motion. The first and preferred system describes the use of non-circular gears. The second system describes the use of circular gears with sections of teeth removed.

REFERENCES:
patent: 844210 (1907-02-01), Strickland
patent: 2131288 (1938-09-01), Kirkpatrick
patent: 4261223 (1981-04-01), Johnson

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