Derailleur mechanism for a bicycle

Details Derailleur mechanism for a bicycle Derailleur mechanism for a bicycle

1982-06-14

1984-12-04

Braun, Leslie A.

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 78, F16H 1108

Patent

active

044861826

ABSTRACT:
The invention provides a mechanism which is simpler in construction, cheaper and easier to assemble. The derailleur mechanism is of the type comprising a movable device for guiding or shifting the chain connected to a support in such manner as to be displaced in translation with respect to the support by means of an actuating device. The movable device is connected to the support, on one hand, by a link and, on the other hand, by a pin-and-slot connection. The slot has the shape of an arc of a circle whose radius is equal to the distance between the two pivot pins of the link.

REFERENCES:
patent: 967877 (1910-08-01), Bauer
patent: 2104301 (1938-01-01), Haughey
patent: 3453899 (1969-07-01), Tarutani et al.
patent: 3730012 (1973-05-01), Juy
patent: 4164249 (1979-08-01), Strub
patent: 4237743 (1980-12-01), Nagano
patent: 4286953 (1981-09-01), Shimano

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