发明名称 |
Rotational drill bits and drilling apparatuses including the same |
摘要 |
A roof-bolt drill bit. The roof-bolt drill bit may include a bit body rotatable about a central axis and at least one cutting element coupled to the bit body. The bit body may comprise a forward end, a rearward end axially opposite the forward end, and an internal passage defined within the bit body, with the internal passage extending to at least one opening defined in a side portion of the bit body. The bit body may also comprise a channel defined in a peripheral portion of the bit body, with the channel extending along a path between the rearward end of the bit body and a side portion of the bit body. |
申请公布号 |
AU2011261236(A1) |
申请公布日期 |
2013.02.14 |
申请号 |
AU20110261236 |
申请日期 |
2011.06.03 |
申请人 |
DOVER BMCS ACQUISITION CORPORATION |
发明人 |
COX, E. SEAN;MYERS, RUSSELL ROY |
分类号 |
E21B10/60 |
主分类号 |
E21B10/60 |
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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