发明名称 |
TAPERED THREAD CONFIGURATION WITH IMPROVED DURABILITY |
摘要 |
Underground drilling operation often requires connecting a drill tool (e.g., drill bit, backreamer, etc.) to a drill string. It is desirable to connect the drill tools to a drill string in a manner that facilitates quick and easy assembly and disassembly. Low torque coupling, commonly referred to as “torque-less” connection, can provide such functionality. The useful life and strength of such connections can be improved upon. The present disclosure provides a low torque coupling with improved strength and durability. |
申请公布号 |
EP2646645(A2) |
申请公布日期 |
2013.10.09 |
申请号 |
EP20110844366 |
申请日期 |
2011.11.29 |
申请人 |
VERMEER MANUFACTURING COMPANY |
发明人 |
LANGENFELD, MICHAEL, D.;RUNQUIST, RANDY, R. |
分类号 |
E21B17/042;F16L15/00 |
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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