Patent ID: 11919607
Assignee: SHIMANO INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 14:
15. The bicycle rear derailleur according to claim 1, further comprising:
a fastener element configured to fix the first attachment end of the base element to the frame of the bicycle such that a fastener center axis of the fastener element and the rear-wheel axis are coaxial in a mounting state of the bicycle rear derailleur, the fastener element having a small diameter portion and a large diameter portion adjacent to the small diameter portion in an axial direction with respect to the fastener center axis;
the second arm being disposed closer to an axial center plane of the bicycle than the first arm in the mounting state of the bicycle rear derailleur; and
the first arm of the base element including a first attachment opening configured such that the small diameter portion of the fastener element passes through in the mounting state of the bicycle rear derailleur.