发明名称 |
Pipe joint |
摘要 |
A pipe joint with premium threads having both metal-to-metal and polymeric seals to block fluid leakage through the joint. A polymeric seal ring is preferably carried within an annular groove in the box end. Metal sealing surfaces, each having a different inside diameter, are provided on opposite sides of the annular groove to form metal-to-metal seals with two compatible metal sealing surfaces on the exterior of the pin member. The joint is thus characterized by two metal-to-metal seals formed on opposite sides of the annular groove to trap the seal ring therebetween. The metal-to-metal seals cooperate to prevent undesired extrusion of the seal ring.
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申请公布号 |
US4458925(A) |
申请公布日期 |
1984.07.10 |
申请号 |
US19830496242 |
申请日期 |
1983.05.19 |
申请人 |
OTIS ENGINEERING CORPORATION |
发明人 |
RAULINS, GEORGE M.;GRIMMER, GEORGE G. |
分类号 |
E21B17/042;F16L15/00;F16L15/04;F16L15/06;(IPC1-7):F16L25/00 |
主分类号 |
E21B17/042 |
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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