Bicycle front derailleur

Details Bicycle front derailleur Bicycle front derailleur

1992-11-23

1994-05-17

Watts, Douglas D.

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 82, 474140, B62M 916, F16H 718, F16H 6100

Patent

active

053123018

ABSTRACT:
The present invention provides a bicycle front derailleur comprising: a movable member including an inner and outer guide plates opposed to each other to define a guide space through which a chain runs; the movable member being moved laterally of a bicycle for shifting the chain. For a purpose of preventing the chain from being caught or damaged by a chain entering edge of the movable member, a following techincal measure is employed: The movable member is provided with catch preventive measure for preventing the chain from being caught by the cain entering edge of the movable member when the chain enters the guide space between the inner and outer guide plates.

REFERENCES:
patent: 3960025 (1976-06-01), Juy
patent: 4223562 (1980-09-01), Nagano et al.
patent: 4551121 (1985-11-01), Nagano
patent: 4617006 (1986-10-01), Nagano

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