发明名称 |
DRILL BIT FOR BORING EARTH AND OTHER HARD MATERIALS |
摘要 |
A drill bit for drilling a hole through earth and hard materials, the drill bit including a bit body having an inner bore and a cutting head at a cutting end, the cutting head including a center portion with one or more apertures extending from the cutting end to the inner bore, a perimeter portion projecting radially outward to form a plurality of blades divided by a plurality of junk slots, a cutting face, and a plurality of cutter receptacles spaced about the cutting face. A plurality of cutters with cutter tips terminating in points are in mounted into the cutter receptacles at a pitch angle relative to the cutting face, and with the plurality of cutter points together defining a projected cutting surface. |
申请公布号 |
WO2012148965(A3) |
申请公布日期 |
2013.01.03 |
申请号 |
WO2012US34908 |
申请日期 |
2012.04.25 |
申请人 |
NEWTECH DRILLING PRODUCTS, LLC;JONES, MARK, L.;CURRY, KENNETH, M. |
发明人 |
JONES, MARK, L.;CURRY, KENNETH, M. |
分类号 |
E21B10/43;E21B10/56;E21B10/62 |
主分类号 |
E21B10/43 |
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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