Automatic transmission for multi-speed bicycle

Details Automatic transmission for multi-speed bicycle Automatic transmission for multi-speed bicycle

1991-12-12

1992-11-17

Bui, Thuy M.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

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

474 80, F16H 900

Patent

active

051638819

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: 4601682 (1986-07-01), Nagano
patent: 4838837 (1989-06-01), Testa
patent: 4840605 (1989-06-01), Testa
patent: 4842568 (1989-06-01), Marchigiano

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