DEVICE FOR WINDING A TIMEPIECE MOVEMENT |
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| 申请号 | US15667718 | 申请日 | 2017-08-03 | 公开(公告)号 | US20180046141A1 | 公开(公告)日 | 2018-02-15 |
| 申请人 | ROLEX SA; | 发明人 | Sergio de Almeida Graça; Vannina Linck; | ||||
| 摘要 | A component of a winding device, in particular an automatic winding device, of a timepiece movement, wherein it is made of austenitic stainless steel and wherein it comprises at least one friction surface hardened by carbon or nitrogen type atoms introduced into the austenitic stainless steel over a predetermined depth. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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