Double lever assembly for bicycle speed control

Details Double lever assembly for bicycle speed control Double lever assembly for bicycle speed control

1981-11-27

1984-03-20

Hermann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74480R, 74501R, 74531, 474 81, B62K 2306, G05G 900, F16H 722

Patent

active

044373570

ABSTRACT:
In a double assembly for bicycle speed control including a first lever for operating a rear derailleur by means of a control cable in order to shift an endless drive chain from one rear sprocket to a selected rear sprocket of a multiple freewheel, and a second lever for operating a front derailleur by means of a further control cable in order to shift the chain from one front sprocket to another front sprocket of a chainwheel, pivotal motion of the first lever causes synchronous sliding motion of the second lever through a motion converting mechanism so as to automatically center a guide cage of the front derailleur over a chain line thereby to prevent the chain from hitting the inside of the guide cage.

REFERENCES:
patent: 4046025 (1977-09-01), Ozaki
patent: 4155270 (1979-05-01), Juy
patent: 4156371 (1979-05-01), Juy

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