Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...
Patent
1996-01-23
1997-08-05
Graysay, Tamara L.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Including belt shiftable axially from one to another surface...
F16H 5900
Patent
active
056536496
ABSTRACT:
A multispeed bicycle having a plurality of front chainwheels, a plurality of rear gears, front and rear derailleurs, and a shifting apparatus operable by a single manual lever to actuate the front and rear derailleurs. The shifting apparatus includes a first actuating mechanism for actuating the front derailleur, a second actuating mechanism for actuating the rear derailleur, and a shift controller for controlling the actuating mechanisms. The shift controller is responsive to operation of the manual lever to drive the first actuating mechanism or second actuating mechanism to produce a speed stage, and responsive to repeated operation of the manual lever to produce all speed stages corresponding to all combinations of the front chainwheels and rear gears.
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Deland James A.
Graysay Tamara L.
Lagman Frederick L.
Shimano Inc.
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