发明名称 ANORDNING VED HOEYKVALITET SPENNTRAAD FORSYNT MED ET OPPSTUKET HODE
摘要 An upset head and a method of producing the same at a high-strength tension wire, wherein there is formed a supporting seating surface at the transition between the head and the wire. The maximum head diameter is located in the third of the height of the head situated closest to the seating surface. The head diameter at the free head end is equal to or smaller than the wire diameter and the head possesses the shape of a truncated cone at its end section.
申请公布号 NO140569(C) 申请公布日期 1979.09.26
申请号 NO19760000396 申请日期 1976.02.06
申请人 BUREAU BBR LTD., 发明人 SIEGWART, HANS-RUDOLF,;LEEB, DIETMAR,
分类号 B21J5/08;B21F5/00;B21K1/46;E04C5/12;E04G21/12;(IPC1-7):16B15/02;21G3/12 主分类号 B21J5/08
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