发明名称 Insert in a downhole drill bit
摘要 A drill bit assembly has a bit body intermediate a shank and a working face. At least one wear resistant insert is press-fitted within a pocket formed in an outer surface of the bit. An urging element is disposed between the outer surface and a bore of the bit and the urging element is adapted to push the insert away from the bore.
申请公布号 US7533738(B1) 申请公布日期 2009.05.19
申请号 US20080169288 申请日期 2008.07.08
申请人 HALL DAVID R;WEBB CASEY;TAMANG ASHOK 发明人 HALL DAVID R.;WEBB CASEY;TAMANG ASHOK
分类号 E21B10/00;E21B10/36 主分类号 E21B10/00
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