| Original document(27 pages) 中文版 |
A barrel gear 1 as a driving mechanism of an electronic control mechanical timepiece has a mainspring 1A having a surface of elastic material coated with a film made of DLC thin film. The mainspring 1A has a superior anti-corrosion property and reduced slide resistance while sufficiently securing both of toughness and rigidity on account of the film, so that proportional limit thereof can be increased to increase energy accumulated in the mainspring 1A. |
Application Number
申请号 |
01802726 |
Application Date
申请日 |
2001.07.06 |
| Title 名称 |
Spring, drive mechanism, device and timepiece using sard spring |
Publication Number
公开号 |
1418295 |
Publication Date
公开日 |
2003.05.14 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
C21D9/02;F16F1/02 |
Applicant(s) Name
申请人 |
Seiko Epson Corp. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Hara Tatsuo |
| Attorney & Agent 代理人 |
cai minjun lin changan |
| More information 更 多 信 息 |
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