Front derailleur for a bicycle

Details Front derailleur for a bicycle Front derailleur for a bicycle

1987-06-29

1988-07-12

Novosad, Stephen J.

Endless belt power transmission systems or components

Guard or housing for belt or pulley

474 82, F16H 718

Patent

active

047567040

ABSTRACT:
A front derailleur for a bicycle which is provided with a linkage mechanism formed of a fixing member, first and second linkage members, and a movable member. The first and second linkage members are pivotally supported through first and second pivot shafts to the fixing member. The first and second pivot shafts are each fixed at one axial end thereof to the fixing member and, pivotally support at intermediate thereof the linkage members respectively. The first and second pivot shafts are connected at their other axial ends by a connector, so that a load due to an operating force to operate the linkage mechanism is dispersed to the first and second pivot shafts, thereby enabling the front derailleur to be miniaturized and inexpensive to produce.

REFERENCES:
patent: 4030374 (1977-06-01), Isobe
patent: 4194409 (1980-03-01), Nagano
patent: 4237743 (1980-12-01), Nagano
patent: 4330137 (1982-05-01), Nagano
patent: 4551121 (1985-11-01), Nagano

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