| 发明名称 |
SPIRAL SPRING MADE OF ATHERMAL GLASS FOR CLOCKWORK MOVEMENT AND METHOD FOR MAKING SAME |
| 摘要 |
The invention concerns a spiral spring made from a photostructurable glass plate by UV irradiation, heat treatment and chemical etching, said glass having a thermal coefficient of Young modulus CTE<SUB>0</SUB>. By UV irradiation through one or more masks, optionally completed by a heat treatment, selected zones of the spiral spring have a CTE<SUB>0</SUB> modified into a CTE<SUB>i</SUB> value. |
| 申请公布号 |
WO2007059876(A3) |
申请公布日期 |
2007.10.04 |
| 申请号 |
WO2006EP10854 |
申请日期 |
2006.11.13 |
| 申请人 |
THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD;HESSLER, THIERRY;GRUPP, JOACHIM |
发明人 |
HESSLER, THIERRY;GRUPP, JOACHIM |
| 分类号 |
G04B17/22;C03C23/00;F16F1/10;G04B17/06;G04D3/00 |
主分类号 |
G04B17/22 |
| 代理机构 |
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