- 专利标题： BALANCE FOR TIMEPIECES AND METHOD FOR MANUFACTURING THE SAME
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申请号： US16767778申请日： 2018-12-03
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公开(公告)号： US20210181679A1公开(公告)日： 2021-06-17
- 发明人: Alexandre HAEMMERLI , Francois GUEISSAZ , Jean-Claude MARTIN , Lionel PARATTE , Yves WINKLER , Gianni DI DOMENICO , Pascal WINKLER , Jean-Luc HELFER , Lionel TOMBEZ , Bapitste HINAUX , Donald Willan CORSON , Michel WILLEMIN
- 申请人： The Swatch Group Research and Development Ltd
- 申请人地址： CH Marin
- 专利权人： The Swatch Group Research and Development Ltd
- 当前专利权人： The Swatch Group Research and Development Ltd
- 当前专利权人地址： CH Marin
- 优先权： EP17210298.0 20171222
- 国际申请： PCT/EP2018/083295 WO 20181203
- 主分类号： G04B17/22
- IPC分类号： G04B17/22
摘要：
A balance for timepieces includes a rim, a hub, and at least one arm connecting the hub to the rim. At least one portion of the balance is made of an at least partially amorphous metal alloy. The at least partially amorphous metal alloy is based on an element chosen from the group consisting of platinum, zirconium and titanium, and has a coefficient of thermal expansion comprised between 7 ppm/° C. and 12 ppm/° C. The balance can be manufactured by moulding. A resonator can include such a balance and a monocrystalline quartz balance spring.
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