Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1989-09-22
1991-05-07
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74142, 74158, 74479, 74489, 745022, 192 431, B62M 2504, B62K 2306, G05G 506
Patent
active
050126920
ABSTRACT:
A speed change lever apparatus for use in a bicycle. The apparatus has a winding member for winding up a speed change control cable and a cable-pulling lever operable to pull the cable by causing the winding member to pivot only in a cable winding direction. The cable-pulling lever returns to its home position after completion of speed change operation. The improved apparatus includes a position maintaining mechanism for stepwisely maintaining a position of the winding member and a release lever operable to release the position maintaining mechanism. The release lever also returns to its home position after completion of release operation. At the respective home positions, the cable-pulling lever and the release lever are operable in substantially same directions to enable a cyclist to disregard the direction of lever operations. Further, the home positions of the levers are disposed at different yet adjacent locations relative to a direction normal to the lever operating directions. Hence, the lever operations, i.e. speed change operations do not require much movement of the cyclist's thumb. Consequently, the apparatus provides speedy and accurate speed change operations.
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Herrmann Allan D.
Shimano Industrial Company Limited
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