Rear derailleur for bicycle
AssigneeShimano Inc.
InventorSatoshi Shahana
Life of this patent
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Abstract
The rear bicycle derailleur guides a chain to one of a plurality of rear sprockets. The rear derailleur includes a base member, a linkage assembly, a movable member, a chain guide, a biasing member, and a biasing member connection structure. The base member is mounted to the bicycle frame. The linkage assembly is rotatably linked to the base member and the movable member. The movable member is capable of movement toward or away from the frame by rotation of the linkage assembly. The chain guide is pivotally linked to the movable member. The biasing member biases the movable member relative to the base member. The biasing member connection structure attaches the biasing member in either of two different biasing states to selectively bias the movable member toward or away from the frame.
Claims21
A bicycle rear derailleur comprising:
- a base member configured and arranged to be mounted to a rear part of a bicycle frame;
- a linkage assembly pivotally coupled to the base member;
- a movable member pivotally coupled to the linkage assembly such that the movable member is capable of movement toward and away from the bicycle frame;
- a chain guide pivotally coupled to the movable member;
- a biasing member arranged to bias the movable member relative to the base member;
- and
- a biasing member connection structure configured and arranged to selectively mount the biasing member to the rear derailleur in a first biasing state when the biasing member is coupled in a first biasing position and a second biasing state when the biasing member is coupled in a second biasing position, the biasing member being arranged to bias the movable member away from the bicycle frame in the first biasing state and the biasing member being arranged to bias the movable member toward the bicycle frame in the second biasing state.
Dependencies are inferred from the claim text.