Linear bicycle derailleur

Details Linear bicycle derailleur Linear bicycle derailleur

1996-08-09

1997-11-18

Schoeppel, Roger J.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

474119, F16H 5900

Patent

active

056882009

ABSTRACT:
A derailleur for a bicycle for changing the speed of the bicycle. The derailleur can be distinguished from prior parallelogram designs in employing stationary guide rods over which a pulley wheel assembly is caused to slide as the bicycle's drive chain is shifted between various drive sprocket wheels. Gear shifting is done in a linear motion while being able to center the derailleur's pulley assembly without the use of a return spring which is currently employed by present day parallelogram derailleurs.

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patent: 4938733 (1990-07-01), Patterson
patent: 5135441 (1992-08-01), Gelbien
patent: 5197927 (1993-03-01), Patterson et al.
patent: 5407396 (1995-04-01), Gilbert
patent: 5607367 (1997-03-01), Patterson

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