Invention Grant
- Patent Title: Drill bits having flushing
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Application No.: US15303668Application Date: 2016-03-03
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Publication No.: US10077609B2Publication Date: 2018-09-18
- Inventor: Cody A. Pearce , Michael D. Rupp , Christian M. Lambert
- Applicant: LONGYEAR TM, INC.
- Applicant Address: US UT Salt Lake City
- Assignee: LONGYEAR TM, INC.
- Current Assignee: LONGYEAR TM, INC.
- Current Assignee Address: US UT Salt Lake City
- Agency: Ballard Spahr LLP
- International Application: PCT/US2016/020680 WO 20160303
- International Announcement: WO2016/141181 WO 20160909
- Main IPC: E21B10/60
- IPC: E21B10/60 ; E21B10/42 ; E21B10/02 ; E21B10/54

Abstract:
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.
Public/Granted literature
- US20170362900A1 DRILL BITS HAVING FLUSHING Public/Granted day:2017-12-21
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