Method and apparatus for controlling a bicycle transmission

Details Method and apparatus for controlling a bicycle transmission Method and apparatus for controlling a bicycle transmission

2005-01-04

2005-01-04

Hurley, Kevin (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C474S069000

Reexamination Certificate

active

06837505

ABSTRACT:
An apparatus for controlling upshifting and downshifting of a bicycle transmission includes a running condition detecting mechanism that detects a running condition of the bicycle, a threshold value setting mechanism that sets at least one of an upshift threshold value and a downshift threshold value for the running condition, and a control mechanism. The control mechanism provides a signal that commands at least one of an upshift and a downshift when the running condition is beyond the corresponding upshift threshold value and downshift threshold value for a first predetermined time interval. In another embodiment, the control mechanism provides a signal that commands at least one of an upshift and a downshift when the running condition is beyond the corresponding one of the upshift threshold value and the downshift threshold value at both a first detection and a second detection, wherein the second detection occurs after the first detection. The control mechanism provides the signal after the second detection and not in a time interval between the first detection and the second detection.

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
patent: 7-229909 (1995-08-01), None

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