发明名称 |
Sänkborrhammare med ett reverserat utloppssystem och en segmenterad chuckanordning |
摘要 |
A down-the-hole drill hammer is provided that includes a housing, a solid core piston mounted within the housing, a seal located between the solid core piston and the housing, and a backhead configured to exhaust working fluid volumes about a proximal end of the DHD hammer. The backhead includes a check valve assembly having a plug seal that can be moved to a closed seal position by gravity. A DHD hammer having a segmented chuck assembly is also provided. The segmented chuck assembly includes a plurality of chuck segments forming a cylindrical chuck assembly. |
申请公布号 |
SE1250524(A1) |
申请公布日期 |
2012.05.23 |
申请号 |
SE20120050524 |
申请日期 |
2010.11.17 |
申请人 |
CENTER ROCK INC. |
发明人 |
LELAND, H. LYON;WARREN, THOMAS LAY |
分类号 |
E21B4/06;E21B1/38;E21B10/36 |
主分类号 |
E21B4/06 |
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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