- 专利标题: Drill bits having flushing
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申请号: US15303668申请日: 2016-03-03
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公开(公告)号: US10077609B2公开(公告)日: 2018-09-18
- 发明人: Cody A. Pearce , Michael D. Rupp , Christian M. Lambert
- 申请人: LONGYEAR TM, INC.
- 申请人地址: US UT Salt Lake City
- 专利权人: LONGYEAR TM, INC.
- 当前专利权人: LONGYEAR TM, INC.
- 当前专利权人地址: US UT Salt Lake City
- 代理机构: Ballard Spahr LLP
- 国际申请: PCT/US2016/020680 WO 20160303
- 国际公布: WO2016/141181 WO 20160909
- 主分类号: E21B10/60
- IPC分类号: E21B10/60 ; E21B10/42 ; E21B10/02 ; E21B10/54
摘要:
A drill bit for cutting a hole in a formation. The drill bit has a shank and a crown. The crown has a plurality of crown portions that are spaced about an operative circumference of the drill bit. The shank and crown cooperate to define an interior space that receives water or other drilling fluid. Each crown portion has two longitudinal edges, an outer surface, at least one inner surface and a cutting face. The crown has a base surface that is spaced from the cutting faces of the crown portions and cooperates with the inner surface of each of the two crown portions to define a slot.
公开/授权文献
- US20170362900A1 DRILL BITS HAVING FLUSHING 公开/授权日:2017-12-21
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