Shift control apparatus for a bicycle transmission that...

Details Shift control apparatus for a bicycle transmission that... Shift control apparatus for a bicycle transmission that...

2005-04-12

2005-04-12

Hurley, Kevin (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C474S070000

Reexamination Certificate

active

06877755

ABSTRACT:
A shift control apparatus for a bicycle transmission comprises a signal detector that detects signals corresponding to motion of the bicycle, a threshold setting unit that sets a shift threshold value, and a time interval calculating unit that calculates time intervals after signals are detected. A control unit provides a signal to change a gear in the bicycle transmission only after a time interval between successive first and second signals passes the shift threshold value and the second signal is detected by the signal detector.

REFERENCES:
patent: 4490127 (1984-12-01), Matsumoto et al.
patent: 5059158 (1991-10-01), Bellio et al.
patent: 5599244 (1997-02-01), Ethington
patent: 6047230 (2000-04-01), Spencer et al.
patent: 6367833 (2002-04-01), Horiuchi
patent: 20030160420 (2003-08-01), Fukuda

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