发明名称 Lengthened tubular pin member nose for improving sealing integrity and bearing forces
摘要 A tubular connection having a nose extension on the pin member for stiffening the member and exhancing the conical seal area forward of the first thread, which seal is spaced at a distance from the time end by a non-sealing nose extension that is at least as long as the sealing area. The integrity of the seal is improved, the bearing surface is enlarged and the tendency of galling is reduced.
申请公布号 US4795200(A) 申请公布日期 1989.01.03
申请号 US19880168544 申请日期 1988.03.09
申请人 HYDRIL COMPANY 发明人 TUNG, LAWRENCE Y.
分类号 E21B17/042;F16L15/00;(IPC1-7):F16L25/00 主分类号 E21B17/042
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