| 发明名称 |
ONE CONE BIT WITH INTERCHANGEABLE CUTTING STRUCTURES, A BOX-END CONNECTION, AND INTEGRAL SENSORY DEVICES |
| 摘要 |
<p>A drill bit, comprising a bit body, a sensor disposed in the bit body, a single journal removably mounted to the bit body, and a roller cone rotatably mount ed to the single journal.</p> |
| 申请公布号 |
CA2426522(C) |
申请公布日期 |
2007.07.03 |
| 申请号 |
CA20032426522 |
申请日期 |
2003.04.24 |
| 申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
MORAN, DAVID PATRICK;WITMAN, GEORGE BODO IV |
| 分类号 |
E21B10/08;E21B10/20;E21B10/22;E21B47/01 |
主分类号 |
E21B10/08 |
| 代理机构 |
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代理人 |
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