发明申请
- 专利标题： Earth Boring Bit with DLC Coated Bearing and Seal
- 专利标题（中）： DLC涂层轴承和密封的地球镗孔
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申请号： US12556325申请日： 2009-09-09
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公开(公告)号： US20090321146A1公开(公告)日： 2009-12-31
- 发明人: Aaron J. Dick , Chih C. Lin , Anton F. Zahradnik , Gregory L. Ricks , Terry J. Koltermann
- 申请人： Aaron J. Dick , Chih C. Lin , Anton F. Zahradnik , Gregory L. Ricks , Terry J. Koltermann
- 申请人地址： US TX Houston
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： US TX Houston
- 主分类号： E21B10/25
- IPC分类号： E21B10/25 ; E21B10/08 ; E21B10/22 ; C23C16/50
摘要：
A roller cone bit is provided that includes a wear resistant diamond-like carbon coating applied to a bearing shaft, where it is in sliding contact with the bearing seal. The wear resistant diamond-like carbon coating reduces wear and corrosion of the head bearing shaft sealing surface and provides extended life to the bearing seal.
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