发明名称 |
Timepiece hand manufacturing method |
摘要 |
A method of manufacturing a timepiece hand is disclosed, whereby the hand can be made extremely thin and lightweight, as well as strong and rigid. The timepiece hand is in the form of an open shell formed of hard nickel electro-forming. Because a minimum of mechanical working is performed upon the hand during the manufacturing process, bending distortion of the hand is avoided, and such a hand can be made substantially thinner than has been possible with manufacturing methods of the prior art.
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申请公布号 |
US4371429(A) |
申请公布日期 |
1983.02.01 |
申请号 |
US19810294112 |
申请日期 |
1981.08.19 |
申请人 |
CITIZEN WATCH COMPANY LIMITED |
发明人 |
ENOMOTO, TADAO;KASAI, HIDEFUMI |
分类号 |
C25D1/00;G04B19/04;(IPC1-7):C25D1/20 |
主分类号 |
C25D1/00 |
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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