Front bicycle derailleur

Details Front bicycle derailleur Front bicycle derailleur

1996-09-03

1998-07-14

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...

745022, F16H 5900

Patent

active

057795800

ABSTRACT:
A front derailleur for a bicycle as well as a system including the combination of a front derailleur and shifter. The derailleur includes a fixing member securedly attached to a seat tube of a bicycle frame through a tightening band, a chain guide and a pair of linkage members for supporting the chain guide movable in reciprocation with respect to the fixing member. Further included in the front derailleur is a spool rotatably connecting the fixing member to the chain guide whereby actuation of a shifter located remotely from the derailleur results in rotation of the spool through looped cable causing pivoting of the linkage members and movement of the chain guide in reciprocation with respect to the fixing member.

REFERENCES:
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patent: 4900291 (1990-02-01), Patterson
patent: 4938733 (1990-07-01), Patterson
patent: 5197927 (1993-03-01), Patterson et al.
patent: 5201236 (1993-04-01), Nagano
patent: 5389043 (1995-02-01), Hsu
patent: 5496222 (1996-03-01), Kojima et al.
patent: 5607367 (1997-03-01), Patterson

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