发明名称 |
THREADED CONNECTION WITH IMPROVED ROOT THREAD PROFILE |
摘要 |
A threaded connection design having a double ellipse in the thread root for reducing stress fatigue is illustrated in this disclosure. The root groove includes a first portion comprising a first elliptical surface being part of a first ellipse. The root groove further includes a second portion comprising a second elliptical surface, being part of a second ellipse, and the second elliptical surface being joined tangentially at a first end to the first elliptical surface at a junction point that defines the bottom of the root groove. The second elliptical surface is joined tangentially at a second end to the load flank. |
申请公布号 |
WO2013084099(A1) |
申请公布日期 |
2013.06.13 |
申请号 |
WO2012IB56597 |
申请日期 |
2012.11.21 |
申请人 |
TENARIS CONNECTION LIMITED |
发明人 |
MAZZAFERRO, GASTON MAURO;COPPOLA, TOMMASO;AMATO, STEFANO;AGUILAR ARMENDARIZ, RAMON ALBERTO;DARCIS, PHILIPPE PIERRE |
分类号 |
F16L15/06;E21B17/042;F16B33/02 |
主分类号 |
F16L15/06 |
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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