发明名称 |
Seal and restraint system for plastic pipe with low friction coating |
摘要 |
An apparatus for restraining plastic pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism includes a circumferential housing and a companion sealing ring which are received within a mating groove provided in the belled end of a female pipe. The circumferential housing has an interior region which contains a gripping ring insert. The sealing ring and housing are integrally located within a belled pipe end during belling operations. Either the exterior of the gripping ring or the interior of the housing or both are provided with a low friction coating.
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申请公布号 |
US8444186(B2) |
申请公布日期 |
2013.05.21 |
申请号 |
US20090623580 |
申请日期 |
2009.11.23 |
申请人 |
JONES JIM;WEIH MARK;S & B TECHNICAL PRODUCTS, INC. |
发明人 |
JONES JIM;WEIH MARK |
分类号 |
F16L0037/000925 |
主分类号 |
F16L0037/000925 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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