Derailleur for a bicycle

Details Derailleur for a bicycle Derailleur for a bicycle

1981-03-09

1984-03-20

Murtagh, John E.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

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

F16H 900

Patent

active

044378483

ABSTRACT:
A derailleur for a bicycle, comprising a derailleur body provided with a fixing member and a four link parallelogram mechanism, the derailleur body being supported swingably with respect to the fixing member, and between the fixing member and the derailleur body is interposed an intermittent feed mechanism, so that a control wire is operated to allow the derailleur body to swing intermittently corresponding to the speed change stages with, respect to the fixing member, and thereafter, the link mechanism at the derailleur body is transformed, thereby switching a driving chain to a desired one of multistage sprockets.

REFERENCES:
patent: 3974707 (1976-08-01), Nagano
patent: 4030375 (1977-06-01), Nagano
patent: 4106356 (1978-08-01), Nagano et al.
patent: 4198873 (1980-04-01), Nagano et al.
patent: 4229987 (1980-10-01), Fujimoto
patent: 4306871 (1981-12-01), Nagano

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