Bicycle transmission

Details Bicycle transmission Bicycle transmission

1978-12-13

1981-12-15

Braun, Leslie

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74335, 743375, F16H 344, F16H 506

Patent

active

043053122

ABSTRACT:
A multi-speed bicycle transmission located at the drive pedal hub and including a drive pedal actuatable shifting assembly for effecting gear change in response to limited reverse rotation of the drive pedal shaft at a pair of predetermined locations in the path of rotative displacement thereof. The drive pedal responsive shifting assembly further includes a slidable collar on the drive pedal shaft having two pairs of selectively contoured camming means thereon that are engageable by radially displaceable shift pin means extending into the pedal hub to effect longitudinal displacement of said collar on said collar on the drive pedal shaft and accompanying shifting of the gears in response thereto.

REFERENCES:
patent: 2047174 (1936-07-01), Baumgartner
patent: 2165201 (1939-07-01), Baumgartner
patent: 3766805 (1973-10-01), Shea et al.
patent: 3842691 (1974-10-01), Shea
patent: 4059028 (1977-11-01), Schulz et al.
patent: 4147244 (1979-04-01), Segawa

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