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
1981-05-07
1983-11-01
Braun, Leslie A.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Including belt shiftable axially from one to another surface...
474 78, 474 80, 74471R, 74473R, 74475, F16H 900, F16H 1100, B60K 2000, G05G 900
Patent
active
044128282
ABSTRACT:
An easy to operate control means for shifting gears on dual shift bicycles is described. The control means is constructed so that the front and rear derailleurs of a dual shift bicycle are controlled together to shift to any selected gear from any engaged gear with a single operator action. The design permits the operator to preselect the new gear to be used while continuously pedaling in the present gear, with the actual gear change being made at the operator's discretion. The design also facilitates a rapid series of up shifts or down shifts without requiring intervening gear selections.
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patent: 4232564 (1980-11-01), Yamasaki
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patent: 4376394 (1983-03-01), Lapeyre
Braun Leslie A.
Shannon, III L. D.
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