Electronically servo-assisted bicycle gearshift and related...

Details Electronically servo-assisted bicycle gearshift and related... Electronically servo-assisted bicycle gearshift and related...

2007-05-29

2007-05-29

Charles, Marcus (Department: 3682)

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Condition responsive

C280S260000, C280S259000, C701S057000

Reexamination Certificate

active

10664305

ABSTRACT:
A method for electronically servo-assisting a bicycle gearshift, including the steps of: a) driving an actuator of a bicycle gearshift to displace a chain of the gearshift in an axial direction with respect to a gearshift group comprising at least two sprockets; b) receiving information on the desired alignment between the chain and a predetermined sprocket of the gearshift group; and c) setting a biunique correspondence between the physical position of the actuator at step b) and a logic value associated with the gear ratio relative to the predetermined sprocket.

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