Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1992-06-01
1993-05-25
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Hand operated
74142, 74475, 74489, 74473R, F16C 110, G05G 1100
Patent
active
052130053
ABSTRACT:
A control device for a bicycle derailleur that includes a fixing member, control structure for effecting a change speed, a reciprocating member reciprocatably supported by the fixing member and operatively connected to the derailleur to be movable between a forward direction for shifting a chain from a smaller sprocket to a larger sprocket and in a backward direction for shifting the chain from the larger sprocket to the smaller sprocket, the reciprocating member being urged in the backward direction, and a retaining mechanism acting as a one-way mechanism for permitting the reciprocating member to move in the forward direction and preventing the same from moving in the backward direction thereby to position and maintain the reciprocating member. The retaining mechanism can retain the reciprocating member in one set position or an intermediate position displaced from the set position for each of a plurality of speeds in the forward direction, and can release the positional maintenance of the reciprocating member thereby to selectively maintain the reciprocating member in a set position displaced from the maintaining position, or in a further set position more displaced in the backward direction.
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patent: 4864885 (1989-09-01), Nagano
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Luong Vinh T.
Shimano Inc.
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