Front derailleur for a bicycle

Details Front derailleur for a bicycle Front derailleur for a bicycle

1992-06-15

1993-09-21

Bui, Thuy M.

Endless belt power transmission systems or components

Belt guide has surface in sliding contact with belt

474 80, F16H 718

Patent

active

052464059

ABSTRACT:
A bicycle front derailleur has a guide assembly for shifting a chain among a plurality of sprockets of different sizes. The guide assembly comprises an outer guide plate, an inner guide plate extending substantially parallel to the outer guide plate, and bridge members interconnecting the outer and inner guide plates in a spaced relationship. The inner guide plate includes an upper plate portion, and a lower plate portion extending from the upper plate portion. The lower plate portion includes a first plate portion and a second plate portion, the second plate portion being elastically deformable relative to the first plate portion axially of the sprockets.

REFERENCES:
patent: 4078444 (1978-03-01), Huret
patent: 4237743 (1980-12-01), Nagano

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