发明名称 |
Tool for Removing Drill Cores from Hammer Drill Bits |
摘要 |
An attachment for removing a drill core from a hollow volume of a hollow drill bit, comprising an attachment sheath embodied to be arranged at an accepting shaft comprising at least one ejection element, which is embodied in the hollow volume of the hollow drill bit and designed for transferring a force upon the drill core. |
申请公布号 |
US2013068529(A1) |
申请公布日期 |
2013.03.21 |
申请号 |
US201213425864 |
申请日期 |
2012.03.21 |
申请人 |
HOFBRUCKER THOMAS;MEIDLEIN JOCHEN |
发明人 |
HOFBRUCKER THOMAS;MEIDLEIN JOCHEN |
分类号 |
E21B10/02;E21B12/00 |
主分类号 |
E21B10/02 |
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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