Control means for shifting gears on dual shift bicycles

Details Control means for shifting gears on dual shift bicycles Control means for shifting gears on dual shift bicycles

1985-07-03

1986-10-28

Leppink, James 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 82, F16H 900

Patent

active

046196315

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 down shifts without requiring intervening gear selections.

REFERENCES:
patent: 4470823 (1984-09-01), Shimano

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