Invention Grant
- Patent Title: Bicycle front derailleur
- Patent Title (中): 自行车前拨链器
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Application No.: US11343206Application Date: 2006-01-31
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Publication No.: US07677998B2Publication Date: 2010-03-16
- Inventor: Toshio Tetsuka
- Applicant: Toshio Tetsuka
- Applicant Address: JP Osaka
- Assignee: Shimano Inc.
- Current Assignee: Shimano Inc.
- Current Assignee Address: JP Osaka
- Agency: Global IP Counselors, LLP
- Main IPC: B62M9/12
- IPC: B62M9/12

Abstract:
A bicycle front derailleur includes a base member, a movable member and a linkage assembly. The base member is configured to be fixedly coupled to a bicycle frame. The movable member has a chain guide portion. The linkage assembly is coupled between the base member and the movable member to move the chain guide portion between a retracted position and an extended position. The chain guide portion includes a chain guide element defining a chain path and a movable plate arranged to pivot about a pivot axis relative to the chain guide element in a see-saw movement.
Public/Granted literature
- US20070178998A1 Bicycle front derailleur Public/Granted day:2007-08-02
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