Patent ID: 6997835
Filing Date: 2006-02-14
Classification: B62J,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 member operatively coupled to the linkage mechanism, wherein moving the actuating member in a first direction causes the movable member to move laterally toward the bicycle and moving the actuating member in a second direction causes the movable member to move laterally away from the bicycle; and a power storing mechanism disposed in a first power transmission path and in a different second power transmission path between the actuating member and the movable member for storing forces directed from the actuating member toward the movable member in a first force direction along the first power transmission path and from the actuating member toward the movable member in a second force direction along the second power transmission path, wherein the first force direction is different from the second force direction.