发明名称 |
Zeiger fuer eine Uhr und Verfahren zu dessen Herstellung. |
摘要 |
PURPOSE:To provide watch hands thin and presenting three-dimensional sense and a method of manufacturing them. CONSTITUTION:In manufacturing hands for a watch, hand body 24 and seat 22 are formed by a surface press process prior to formation of a boss 29 and a boss hole 28. Therefore, increasing the pressure of the surface-press process does not influence the precision of the boss hole. When the boss 29 and boss hole 28 are formed by the surface-press process, a curved surface 30 can be formed without producing burrs at the bore of the lower opening of the boss hole 28. |
申请公布号 |
CH685964(B5) |
申请公布日期 |
1996.05.31 |
申请号 |
CH19930001273 |
申请日期 |
1993.04.27 |
申请人 |
CITIZEN WATCH COMPANY, LIMITED;AGEO SEIMITSU KABUSHIKI KAISHA |
发明人 |
HIRATA, KAZUHIKO;KOMODA, UICHI;FUJIWARA, SUMIO;KUMASAKA, MASAAKI;SUGAWARA, YUSUKE |
分类号 |
B21D53/00;G01D13/22;G04B19/04;G04D3/00;(IPC1-7):G04B19/04 |
主分类号 |
B21D53/00 |
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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