SONIC DRILL BIT FOR CORE SAMPLING |
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| 申请号 | PCT/US2009043809 | 申请日 | 2009-05-13 | 公开(公告)号 | WO2009140400A3 | 公开(公告)日 | 2010-03-11 |
| 申请人 | LONGYEAR TM INC; OOTHOUDT THOMAS J; | 发明人 | OOTHOUDT THOMAS J; | ||||
| 摘要 | A drill bit for core sampling includes a body having a central axis and first end having a tapered outer surface and a radius transverse to the central axis, and an insert having a cutting surface on the first end oriented at an axial angle relative to the radius to move material displaced during drilling away from the first end. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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