发明名称 |
DRILL BIT FOR IMPROVED TRANSPORT OF CUTTINGS |
摘要 |
A rock drill bit having a head provided at one end of an elongate shank. A plurality of fluid flushing passageways extend axially from an internal bore extending through the shank with at least one fluid flushing passageway having an exit end at the front face formed as an elongate slot having a length greater than a width to facilitate the rearward transport of cut rock fragment. |
申请公布号 |
WO2016131653(A1) |
申请公布日期 |
2016.08.25 |
申请号 |
WO2016EP52278 |
申请日期 |
2016.02.03 |
申请人 |
SANDVIK INTELLECTUAL PROPERTY AB |
发明人 |
HEMPH, Rasmus;KRAFT, Conny |
分类号 |
E21B10/38 |
主分类号 |
E21B10/38 |
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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