Front derailleur for a bicycle

Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...

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474 78, 474 82, F16H 1108, F16H 1100, F16H 722

Patent

active

046170065

ABSTRACT:
A front derailleur for a bicycle includes a chain guide and a moving member for moving the chain guide axially of a multistage front chain gear assembly so that a control wire is operated to switch a driving chain guided by the chain guide from one front chain gear to another. A swinging member has one end which includes a support for supporting the control wire or an outer sheath therefor. The swinging member is pivoted at an intermediate portion thereof to the moving device. An adjusting mechanism is located between the other end of the swinging member and the moving member to adjust the position of the swinging member with respect to the moving member and to adjust the position of the chain guide with respect to each front chain gear.

REFERENCES:
patent: 3890847 (1975-06-01), Dian
patent: 4194409 (1980-03-01), Nagano
patent: 4279605 (1981-07-01), Egami
patent: 4452593 (1984-06-01), Coue
patent: 4479787 (1984-10-01), Bonnard
patent: 4486182 (1984-12-01), Coue

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