Invention Grant
- Patent Title: Multi-sectional percussive drill bit assembly
- Patent Title (中): 多段冲击钻头组件
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Application No.: US11422625Application Date: 2006-06-07
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Publication No.: US07389833B2Publication Date: 2008-06-24
- Inventor: Thomas A. Walker , Richard K. Smith, Jr. , Stephen R. Means
- Applicant: Thomas A. Walker , Richard K. Smith, Jr. , Stephen R. Means
- Applicant Address: US PA Somerset
- Assignee: Keystone Drill Services, Inc.
- Current Assignee: Keystone Drill Services, Inc.
- Current Assignee Address: US PA Somerset
- Agency: Beck & Thomas, P.C.
- Main IPC: E21B10/36
- IPC: E21B10/36
Abstract:
A multi-sectional percussive drill bit assembly for drilling holes in earth formation primarily used in conjunction with a pneumatic percussive device. The drill bit assembly is comprised of an easily removable bit that is rotationally driven by a lug and pocket structure and axially limited in travel by means of retaining members.
Public/Granted literature
- US20060278433A1 Multi-Sectional Percussive Drill Bit Assembly Public/Granted day:2006-12-14
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