发明公开
- 专利标题： EARTH BORING BIT WITH TILTED HYDRODYNAMIC THRUST BEARING
- 专利标题（中）： 地球有倾斜HYDRO动压轴承无聊
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申请号： EP06816362.5申请日： 2006-10-11
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公开(公告)号： EP1951987A1公开(公告)日： 2008-08-06
- 发明人: DICK, Aaron , LIN, Chih
- 申请人： Baker Hughes Incorporated
- 申请人地址： P.O. Box 4740 Houston, TX 77210-4740 US
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： P.O. Box 4740 Houston, TX 77210-4740 US
- 代理机构： Hano, Christian
- 优先权： US248623 20051012
- 国际公布： WO2007047147 20070426
- 主分类号： E21B10/24
- IPC分类号： E21B10/24
摘要：
An earth boring bit (11) has thrust faces (27,33) with one of the thrust faces (27) being at least partially tilted relative to the other. The bit has a cone (29) rotatably mounted to a bearing pin (1.9) of the bit body. The thrust faces are in the cone and on an end of the bearing pin. One of the thrust faces (33) is completely flat and perpendicular to the axis of the bearing pin. The other (27) thrust face has a tilted portion that is at a skewed angle relative to the axis. The tilted portion creates converging and diverging zones between the thrust faces (27,33).
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