| 发明名称 |
METHOD OF FORMING FIXING HEADS ON TENSION SPRINGS AND TENSION SPRINGS MANUFACTURED BY MEANS OF THIS METHOD |
| 摘要 |
<p>. A method of forming fixing heads on both ends of tension springs which are made from coiled spring wire and which are used in particular for precision apparatus. A continuous coil of spring wire is expanded at the area of the ends to be formed. The expansion zone extends over at least two turns. The expanded turns arc provided with an envelope of a synthetic material by moulding.</p> |
| 申请公布号 |
CA1135465(A) |
申请公布日期 |
1982.11.16 |
| 申请号 |
CA19790326470 |
申请日期 |
1979.04.26 |
| 申请人 |
N.V. PHILIPS'GLOEILAMPENFABRIEKEN |
发明人 |
MARTIN, JOHANN |
| 分类号 |
B21F35/02;B29C45/14;F16F1/12;(IPC1-7):29C27/00;21F3/12;B21F3/12 |
主分类号 |
B21F35/02 |
| 代理机构 |
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代理人 |
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