Invention Grant
- Patent Title: Spiral spring
- Patent Title (中): 螺旋弹簧
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Application No.: US13375493Application Date: 2010-08-16
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Publication No.: US08764282B2Publication Date: 2014-07-01
- Inventor: Stéphane Von Gunten , Pierre Gygax , Lucas Humair
- Applicant: Stéphane Von Gunten , Pierre Gygax , Lucas Humair
- Applicant Address: CH Le Locle
- Assignee: Manufacture et fabrique de montres et chronometres Ulysse Nardin Le Locle SA
- Current Assignee: Manufacture et fabrique de montres et chronometres Ulysse Nardin Le Locle SA
- Current Assignee Address: CH Le Locle
- Agency: Young & Thompson
- Priority: CH1385/09 20090907
- International Application: PCT/EP2010/061913 WO 20100816
- International Announcement: WO2011/026725 WO 20110310
- Main IPC: G04B17/04
- IPC: G04B17/04
Abstract:
A spiral spring (10) for the movement of a watch, includes a plurality of coplanar leaves (10a, 10b) wound into one another. Furthermore, the inner ends of each leaf are rigidly connected to a single collet (12). The leaves (10a, 10b) and the collar (12) are produced as a single part.
Public/Granted literature
- US20120106303A1 SPIRAL SPRING Public/Granted day:2012-05-03
Information query
