发明名称 |
Earth boring bit with tilted hydrodynamic thrust bearing |
摘要 |
An earth boring bit has thrust faces with one of the thrust faces being at least partially tilted relative to the other. The bit has a cone rotatably mounted to a bearing pin of the bit body. The thrust faces are in the cone and on an end of the bearing pin. One of the thrust faces is completely flat and perpendicular to the axis of the bearing pin. The other 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.
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申请公布号 |
US7465096(B2) |
申请公布日期 |
2008.12.16 |
申请号 |
US20050248623 |
申请日期 |
2005.10.12 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
DICK AARON J.;LIN CHIH |
分类号 |
F16C33/00;E21B10/22;F16C33/66 |
主分类号 |
F16C33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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