Invention Grant
- Patent Title: Pawl noise dampening mechanism for a bicycle freewheel
- Patent Title (中): 用于自行车飞轮的Pawl噪音抑制机构
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Application No.: US08789435Application Date: 1997-01-27
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Publication No.: US06202813B1Publication Date: 2001-03-20
- Inventor: Yasuhiro Yahata , Koshi Tabe
- Applicant: Yasuhiro Yahata , Koshi Tabe
- Priority: JP8-040424 19960202
- Main IPC: F16D4130
- IPC: F16D4130
Abstract:
A ratchet mechanism for a bicycle hub includes a first hub member and a second hub member, wherein the first hub member and the second hub member are rotatable relative to each other. A pawl is supported by the first hub member, a ratchet tooth is supported by the second hub member, and a biasing mechanism is provided for biasing the pawl toward the ratchet tooth. A pawl control mechanism is responsive to relative rotation of the first hub member and the second hub member for allowing the pawl to contact the ratchet tooth when the first hub member and the second hub member rotate relative to each other in one direction and for preventing the pawl from contacting the ratchet tooth when the first hub member and the second hub member rotate relative to each other in an opposite direction.
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