Bicycle front derailleur
AssigneeShimano Inc.
InventorsKenkichi Inoue, Akinobu Sugimoto
Life of this patent
Estimating the term…
Abstract
A bicycle front derailleur is basically provided with a base member, a chain guide and a chain restricting abutment. The base member is configured to be mounted on a bicycle frame. The chain guide is configured to be movably coupled to the base member between a retracted position and an extended position to move a bicycle chain. The chain restricting abutment is configured to restrict the bicycle chain from moving in a radially outward direction of a rotational center axis of a bicycle front sprocket when the base member is mounted on the bicycle frame and the chain guide moves from the extended position toward the retracted position.
Claims35
A bicycle front derailleur comprising:
- a base member configured to be mounted on a bicycle frame;
- a chain guide configured to be movably coupled to the base member between a retracted position and an extended position to move a bicycle chain;
- and
- a chain restricting abutment including a contact surface that contacts the bicycle chain to restrict the bicycle chain from moving in a radially outward direction of a rotational center axis of a bicycle front sprocket when the base member is mounted on the bicycle frame and the chain guide moves from the extended position toward the retracted position.
A bicycle front derailleur according comprising:
- a base member configured to be mounted on a bicycle frame;
- a chain guide configured to be movably coupled to the base member between a retracted position and an extended position to move a bicycle chain;
- and
- a chain restricting abutment configured to restrict the bicycle chain from moving in a radially outward direction of a rotational center axis of a bicycle front sprocket when the base member is mounted on the bicycle frame and the chain guide moves from the extended position toward the retracted position, the chain restricting abutment being at least partially made of an elastomer.
Dependencies are inferred from the claim text.