Invention Grant
- Patent Title: Excluder ring for earth-boring bit
- Patent Title (中): 排气环用于钻孔钻头
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Application No.: US11485406Application Date: 2006-07-12
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Publication No.: US07708090B2Publication Date: 2010-05-04
- Inventor: Anton Zahradnik , Gregory L. Ricks , Gregory W. Peterson , Don Quy Nguyen , Chih C. Lin , Terry J. Koltermann
- Applicant: Anton Zahradnik , Gregory L. Ricks , Gregory W. Peterson , Don Quy Nguyen , Chih C. Lin , Terry J. Koltermann
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Bracewell & Giuliani LLP
- Main IPC: E21B10/25
- IPC: E21B10/25
Abstract:
An elastomeric seal ring is located between each bearing pin and each cone of an earth-boring bit. An excluder ring or band is imbedded within the inner diameter of the seal ring. A portion of the inner diameter of the seal ring as well as the excluder ring are in dynamic sealing contact with the bearing pin. The excluder ring may be harder and more wear resistant than the seal ring. The excluder ring may have lubricating properties. An outer excluder ring may be located on the outer diameter of the seal ring for engaging the cone to resist rotation.
Public/Granted literature
- US20080011518A1 Excluder ring for earth-boring bit Public/Granted day:2008-01-17
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