发明名称 Pipe structure and method of manufacture
摘要 A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.
申请公布号 US6660199(B2) 申请公布日期 2003.12.09
申请号 US20010766856 申请日期 2001.01.19
申请人 HANCOR, INC. 发明人 SIFERD ROGER LEE;ANKROM MATTHEW C.;PORTER LARRY E.
分类号 B29C47/06;B29C57/00;B29C57/12;F16L11/15;(IPC1-7):B29C53/34;B29C47/00 主分类号 B29C47/06
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