发明名称 |
DLC coating for earth-boring bit seal ring |
摘要 |
An earth-boring bit has a seal assembly with a seal face having a DLC coating. The seal assembly locates between a bearing pin and a cone of the bit. The seal assembly has at least one rigid ring that rotates against a mating surface. The DLC coating is diamond-like carbon that may be coated by different processes onto either the ring, the mating surface, or both.
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申请公布号 |
US7234541(B2) |
申请公布日期 |
2007.06.26 |
申请号 |
US20020223533 |
申请日期 |
2002.08.19 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
SCOTT DANNY E.;LIN CHIH C.;DICK AARON J. |
分类号 |
E21B10/22;E21B10/25;E21B10/46;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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