Patent ID: 7892122
Filing Date: 2011-02-22
Classification: B62M

Abstract:
1. A derailleur for a bicycle comprising: a base member for attaching the derailleur to the bicycle; a movable member for supporting a chain guide; a linkage mechanism coupling the base member to the movable member so that the movable member is capable of movement relative to the base member; an electrically operated actuating element operatively coupled to the linkage mechanism, wherein moving the actuating element in a first direction causes the movable member to move laterally toward the bicycle, and wherein moving the actuating element in a second direction causes the movable member to move laterally away from the bicycle; and a power storing mechanism; wherein a first portion of the power storing mechanism is disposed in a first power transmission path between the actuating element and the movable member for storing relative forces applied between the actuating element and the movable member along the first power transmission path; wherein a second portion of the power storing mechanism is disposed in a different second power transmission path between the actuating element and the movable member for storing relative forces applied between the actuating element and the movable member along the second power transmission path; and wherein the actuating element comprises: