发明名称 |
Dual dynamic rotary seal |
摘要 |
The invention is a roller cone drill bit including a seal adapted to seal between the bit body and a roller cone on the drill bit. The seal includes a seal body formed from a material that is adapted to energize the seal after compression of the seal. A first dynamic seal surface formed on the seal body and is adapted to seal against the bit body. A second dynamic seal surface is formed the seal body and is adapted to seal against the roller cone. The first and second dynamic seal surfaces are formed from a material adapted to withstand relative motion between the first dynamic seal surface and the bit body and between the second dynamic seal surface and the roller cone.
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申请公布号 |
US6598690(B2) |
申请公布日期 |
2003.07.29 |
申请号 |
US20010922228 |
申请日期 |
2001.08.03 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
PETERSON STEVEN W. |
分类号 |
E21B10/22;E21B10/25;(IPC1-7):E21B9/08;F16J15/34 |
主分类号 |
E21B10/22 |
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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