发明名称 Diamond impregnated bit with aggressive face profile
摘要 <p>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.</p>
申请公布号 AU2010282270(B2) 申请公布日期 2015.02.19
申请号 AU20100282270 申请日期 2010.08.16
申请人 LONGYEAR TM, INC. 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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