发明名称 DIAMOND IMPREGNATED BIT WITH AGGRESSIVE FACE PROFILE
摘要 A drill bit includes a crown defining a central axis. The crown includes at least one segment. The segment includes a planar portion and a plurality of surface features continuous with and extending away from the planar portion. The surface features are discontinuous within the segment with respect to a first arced path defined at a first radial distance from the central axis.
申请公布号 WO2011020111(A2) 申请公布日期 2011.02.17
申请号 WO2010US45650 申请日期 2010.08.16
申请人 LONGYEAR TM, INC.;LAMBERT, CHRISTIAN, M.;RUPP, MICHAEL, D. 发明人 LAMBERT, CHRISTIAN, M.;RUPP, MICHAEL, D.
分类号 E21B10/48;E21B10/02 主分类号 E21B10/48
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