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.
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
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