Invention Grant
- Patent Title: Front derailleur
- Patent Title (中): 前拨链器
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Application No.: US11552882Application Date: 2006-10-25
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Publication No.: US08439779B2Publication Date: 2013-05-14
- Inventor: Raymond Florczyk
- Applicant: Raymond Florczyk
- Applicant Address: DE
- Assignee: SRAM Deutschland GmbH
- Current Assignee: SRAM Deutschland GmbH
- Current Assignee Address: DE
- Agent Milan Milosevic; Lisa Serdynski; Steven Courtright
- Priority: DE102005050988 20051025
- Main IPC: F16H9/00
- IPC: F16H9/00 ; F16H59/00 ; F16H61/00 ; F16H63/00

Abstract:
A front derailleur that includes a derailleur housing having a tubular clamp and a chain guide coupled to parallelogram arms. A pivotal transfer element transfers the shifting motion through a pull cable to the chain guide. The shifting momentum is supported by a derailleur housing having a support extension extending in a support direction along the bicycle frame beyond the hinge of the tubular clamp. The transfer element is pivotally mounted to the derailleur housing by a pivot pin. The return spring is disposed around the pivot pin and is supported on a spring stop of the derailleur housing. The return spring is partially surrounded by a spring cover, which is integrated into the derailleur housing, all of which is protected from dirt by a second covering. The bores for accepting the adjustment screws, which are inclined relative to the frame tube in order to improve accessibility, are located in the spring cover.
Public/Granted literature
- US20070093327A1 Front Derailleur Public/Granted day:2007-04-26
Information query