黑痣长毛专利名称：COLD FORMING TAPERED THREADS 发明人：URS KELLNER
申请号：AU5215886
法定节假日一览表申请日：19860109
公开号：AU579218B2
公开日：
良缘佳偶
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父亲永远是父亲>夸赞女生的词语19881117
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摘要：A male conical thread of an elongated steel structure, e.g. a steel rod or wire of the type employed as reinforcement in pre-stresd concrete, for u in engagement with a matching female conical thread provided in a fixing sleeve or other nut means is formed by first shaping an end portion of the wire or rod, e.g. by grinding or hammering, into a cone that tapers down towards the end of the rod or wire and has a generally truncated smooth outer surface; then, the cone's surface is deformed by cold-pressing such that the thread is formed. Further, a press-die appartus is disclod for u in such cold-pressing, e.g. at a construction site where steel reinforcements are mounted.
申请人：URS KELLNER
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