Front derailleur for a bicycle

Details Front derailleur for a bicycle Front derailleur for a bicycle

1978-10-02

1980-12-09

Husar, C. 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...

474144, 474140, F16H 718

Patent

active

042377439

ABSTRACT:
A front derailleur for a bicycle is of the link type and comprises four members of a fixing member, two linkage members and a movable member, one of the four members carrying a chain guard for preventing a driving chain from coming off a front gear. The chain guard comprises a mounting plate for mounting to one of the four members and at least one guard plate for preventing the chain from coming off of the gear.

REFERENCES:
patent: 3813955 (1974-06-01), Huret et al.
patent: 3890847 (1975-06-01), Dian
patent: 4030374 (1977-06-01), Isobe

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