Automatic transmission for a multi-speed bicycle

Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...

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F16H 5900

Patent

active

054455677

ABSTRACT:
A derailer for derailing a drive chain from one sprocket to an adjacent sprocket of a multi-stage sprocket assembly wherein operation of the derailer thereof is automatically controlled by centrifugal force so that the driving chain is automatically shifted to higher gears as the speed of the bicycle increases.

REFERENCES:
patent: 4838837 (1989-06-01), Testa
patent: 4840605 (1989-06-01), Testa
patent: 4842568 (1989-06-01), Marchigiand
patent: 4895553 (1990-01-01), Nagano
patent: 5163881 (1992-11-01), Chattin
patent: 5295916 (1994-03-01), Chattin

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