Patent ID: 7396304
Filing Date: 2008-07-08
Classification: B62M

Abstract:
1. A bicycle rear derailleur adapted to be attached to a bicycle frame having a rear hub attached thereto, the rear hub having a rear hub axle rotatably supporting a rear hub shell about a center axis of the rear hub axle that is non-movable relative to the bicycle frame when the rear hub is attached to the bicycle frame in a normal operating position, the bicycle rear derailleur comprising: a base member configured to be coupled to the bicycle frame, the base member including a fixing portion configured and arranged to be releasably non-movably fixed to the bicycle frame and a derailleur support portion coupled to the fixing portion for rotation relative thereto about a pivot axis, the fixing portion being non-movable relative to the bicycle frame and the derailleur support portion being rotatable relative to the bicycle frame about the pivot axis when the bicycle rear derailleur is coupled to the bicycle frame in a fully installed operable state; a movable member having a chain guide; and a linkage mechanism coupled between the derailleur support portion of the base member and the movable member to move the chain guide laterally between a first position and a second position, the pivot axis being coincident with the center axis of a rear hub axle when the bicycle rear derailleur is coupled to the bicycle frame in the fully installed operable state and the rear hub is attached to the bicycle frame in a normal operating position.