Endless belt power transmission systems or components – Positive drive pulley or guide roll – And additional coaxial surface for engaging same belt in...
Patent
1983-11-14
1993-04-27
Leppink, James A.
Endless belt power transmission systems or components
Positive drive pulley or guide roll
And additional coaxial surface for engaging same belt in...
474162, 474 77, 74348, F16H 5512
Patent
active
052057941
ABSTRACT:
A shift mechanism for a bicycle and the like wherein a chain is shifted from sprocket to sprocket by an operator controlling a lever to position a camming surface to direct a guide pawl to tilt a segment of one sprocket whereby the tilted segment aligns with a nontilted sprocket during chain shifting.
REFERENCES:
patent: 4127038 (1978-11-01), Browning
Bicycle Partnership #1
Leppink James A.
McKenzie Frank
LandOfFree
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