Shifter for transmissions on bicycles

Details Shifter for transmissions on bicycles Shifter for transmissions on bicycles

1995-11-29

1996-12-31

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...

474128, 745022, F16H 5900

Patent

active

055889255

ABSTRACT:
This invention relates to a shifter for the actuation of derailleurs on bicycles with an integrated transition distance for shifting the chain from a smaller sprocket to the next larger sprocket by means of a detent element. The detent element interacts with a detent spring which detent spring is permanently fastened to the housing. The return of the shifting system into the correct position of the derailleur over the desired larger sprocket is no longer left exclusively to the return spring of the derailleur by means of a Bowden cable, but is assisted by a transition spring which is coupled to the detent spring in the shifter.

REFERENCES:
patent: 5102372 (1992-04-01), Paterson et al.
patent: 5197927 (1993-03-01), Patterson et al.

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