Invention Grant
- Patent Title: Sonic drill bit for core sampling
- Patent Title (中): 声波钻头用于核心采样
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Application No.: US12346395Application Date: 2008-12-30
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Publication No.: US07984773B2Publication Date: 2011-07-26
- Inventor: Thomas J. Oothoudt
- Applicant: Thomas J. Oothoudt
- Applicant Address: US UT South Jordan
- Assignee: Longyear TM, Inc.
- Current Assignee: Longyear TM, Inc.
- Current Assignee Address: US UT South Jordan
- Agency: Workman Nydegger
- Main IPC: E21B10/02
- IPC: E21B10/02

Abstract:
A drill bit for core sampling includes a body having a central axis and first end having a tapered outer surface and a radius transverse to the central axis, and an insert having a cutting surface on the first end oriented at an axial angle relative to the radius to move material displaced during drilling away from the first end.
Public/Granted literature
- US20090283326A1 SONIC DRILL BIT FOR CORE SAMPLING Public/Granted day:2009-11-19
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