发明名称 |
METHOD OF PRODUCING A WATCH AND WATCH OBTAINED BY THIS METHOD |
摘要 |
To simplify fitting and sealing the crystal (4) to the casing (2, 6, 8), assembly is effected by means of ultrasonic welding. The casing (2, 6, 8) and the crystal (4) are made of synthetic materials which are thermo-weldable to each other. The mating faces (8a, 4b) of the peripheral wall (8) of the casing and the crystal (4) are formed for reducing the contact area between the two parts to permit thermo-welding by subjecting the assembly to high-frequency mechanical vibrations imparted by a tool (15). |
申请公布号 |
EP0101663(B1) |
申请公布日期 |
1986.10.08 |
申请号 |
EP19830810328 |
申请日期 |
1983.07.19 |
申请人 |
ETA S.A. FABRIQUES D'EBAUCHES |
发明人 |
MOCK, ELMAR;MULLER, JACQUES |
分类号 |
B32B3/06;B29C65/08;B32B17/06;G04B19/14;G04B37/22;G04B39/02;G04D3/06 |
主分类号 |
B32B3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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