发明名称 |
Method of making a coupling element for a slide fastener |
摘要 |
A method of making a slide fastener coupling element from a blank metal web having a longitudinally extending central portion and a pair of transversely tapered marginal portions integral one with each side of the central portion. A projection for intercoupling with another coupling element is formed by drawing a limited area portion of the web central portion out of the plane thereof and away from one surface thereof. The web is then stamped out to form a coupling element having a head portion including the projecton and formed of the central portion of the web, and a pair of tape edge clamping legs each integral with the head portion and formed of one of the marginal portions of the web.
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申请公布号 |
US4055882(A) |
申请公布日期 |
1977.11.01 |
申请号 |
US19760730865 |
申请日期 |
1976.10.08 |
申请人 |
YOSHIDA KOGYO KABUSHIKI KAISHA |
发明人 |
YOSHIDA, HIROSHI |
分类号 |
A44B19/06;B21D53/52;(IPC1-7):B21D53/52 |
主分类号 |
A44B19/06 |
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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