| 发明名称 |
Sealed bearing rotary rock bit assembly |
| 摘要 |
A water detecting system for detecting water in the bearings and lubricant reservoir system of a sealed bearing rotary rock bit permits detection and removal of water to decrease premature bearing failure caused by the presence of water on the bearing surface.
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| 申请公布号 |
US4441244(A) |
申请公布日期 |
1984.04.10 |
| 申请号 |
US19810316179 |
申请日期 |
1981.10.29 |
| 申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
CASON, JR., GEORGE A. |
| 分类号 |
E21B10/24;G01N25/56;(IPC1-7):B23P19/04 |
主分类号 |
E21B10/24 |
| 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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