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
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