发明公开
- 专利标题: LATCH BODY COMPONENTS HAVING MULTIPLE FUNCTIONS, AND DRILLING HEAD ASSEMBLY INCORPORATING SAME
- 专利标题(中): 锁紧元件组件具有多种功能和钻头的安排,
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申请号: EP12883130.2申请日: 2012-08-23
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公开(公告)号: EP2888432A1公开(公告)日: 2015-07-01
- 发明人: IONDOV, George , DRENTH, Christopher, L. , LACHANCE, Anthony
- 申请人: Longyear Tm, Inc.
- 申请人地址: 10808 South River Front Parkway South Jordan, UT 84095 US
- 专利权人: Longyear Tm, Inc.
- 当前专利权人: Longyear Tm, Inc.
- 当前专利权人地址: 10808 South River Front Parkway South Jordan, UT 84095 US
- 代理机构: Walker, Stephen
- 国际公布: WO2014031120 20140227
- 主分类号: E21B21/10
- IPC分类号: E21B21/10 ; E21B34/06
摘要:
A latch body for use in a drilling head assembly including a fluid control subassembly, a check valve element, and/or a hollow spindle. A distal end portion of the latch body includes a port section that defines a chamber for receiving the check valve element and promoting movement of the check valve element between a blocking position and an open position. The hollow spindle of the fluid control subassembly is operatively coupled to the chamber of the port section and supports the check valve element in the blocking position. A proximal end portion of the latch body supports the fluid control subassembly of the drilling head assembly in an operative position. The latch body includes male protrusions extending inwardly toward and spaced from a longitudinal axis of the latch body. A plurality of channels extend radially outwardly from the longitudinal axis of the latch body, spanning between adjacent male protrusions.
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