Patent ID: 7585237
Filing Date: 2009-09-08
Classification: B62M,Y10T

Abstract:
1. A bicycle derailleur comprising: a base member; an axle including a shaft portion rotatably supporting the base member, a head portion disposed adjacent a first end of the shaft portion for limiting axial movement of the base member in a first axial direction of the shaft portion, and a fastening portion disposed adjacent a second end of the shaft portion with a first fastening structure having external threads and a second fastening structure having internal threads; a first locking member including a first mating structure having internal threads that releasably and directly engage the external threads of the first fastening structure, an abutment limiting axial movement of the base member in a second axial direction of the shaft portion when the first mating structure is engaged with the first fastening structure, and an attachment portion having external threads that is configured to secure the base member to either a bicycle frame or a bracket coupled to the bicycle frame, the internal threads of the first mating structure and the external threads of the attachment portion being concentrically arranged and overlapping each other in an axial direction of the first locking member; a second locking member including a second mating structure having external threads that releasably engage the internal threads of the second fastening structure to secure the first locking member on the fastening portion of the axle; and a chain guide movably coupled to the base member.