专利名称：COLD FORMING TAPERED THREADS 发明人：URS KELLNER
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2013专四申请号：AU5215886
申请日：19860109
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公开号：AU579218B2
公开日：
国庆节英语手抄报素材dovetail>清明节 英文19881117
专利内容由知识产权出版社提供
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.
初中物理电学知识点总结申请人：URS KELLNER留学生创业
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