×

Apparatus for adjusting a position of a bicycle derailleur

  • US 8,998,756 B2
  • Filed: 04/05/2005
  • Issued: 04/07/2015
  • Est. Priority Date: 04/08/2004
  • Status: Active Grant
First Claim
Patent Images

1. A computer-controlled bicycle transmission control apparatus for controlling the operation of an electrically-controlled front derailleur and an electrically-controlled rear derailleur, wherein the apparatus comprises:

  • a control unit that provides a first signal that operates the front derailleur by a front gear shift distance defined as the distance from an origin front sprocket to a destination front sprocket and that provides a second signal that operates the rear derailleur by a rear gear shift distance defined as the distance from an origin rear sprocket to a destination rear sprocket;

    wherein the control unit receives a condition signal that indicates a condition resulting from a gear shift operation of at least one of the front derailleur and the rear derailleur; and

    an adjustment controller that moves the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from a gear shift operation of the front derailleur and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance, and that moves the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from a gear shift operation of the rear derailleur and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×