模范
专利名称：METHOD FOR FORMING THREADS ON PLASTIC NIPPLES
杀一儆百发明人：EDGAR J,US
申请号：US34046273
雷锋精神内涵申请日：19730312
公开号：US3856906A
公开日：
英语手抄报初中
19741224安全生产保证体系
股市实战
风热感冒症状有哪些专利内容由知识产权出版社提供
摘要：Apparatus is provided to perform the following work steps in quence. First, one end of a plastic tube is heated while under circumferential compression. The compression deforms the heated end inwardly and when the apparatus exerting the compressive force is removed, the heated end is inrted in, and gripped by gmented dies having pipe threads on their gripping surfaces. An expansion tool is inrted into the heated end of the tube and an elastomeric annulus which is part of the tool is compresd axially. Said axial compression displaces the annulus radially against the inner surface of the tube which, in turn, is expanded radially and deformed into the thread form of the dies. Next the axial pressure on the annulus is relead, the annulus recedes radially and the expansion tool is retracted from the tube end. A cooling probe is inrted from the opposite end to hold the threaded tube in place as the gmented dies are parated. The cooling probe will freeze the heated end of the tube such that the thread form will be permanently fixed in the exterior tube surface.
申请人：EDGAR J,US
静开头的四字成语更多信息请下载全文后查看
