发明名称 |
Grease pump for sealed bearing rotary cone rock bits |
摘要 |
A positive displacement grease pump apparatus is disclosed to circulate a lubricating grease from a grease reservoir system, formed within a body of a sealed bearing rotary cone rock bit. The relatively viscous grease is positively circulated to and from the reservoir through bearings defined between a rotary cone and its respective journal bearing extending from the rock bit body.
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申请公布号 |
US4501338(A) |
申请公布日期 |
1985.02.26 |
申请号 |
US19830520964 |
申请日期 |
1983.08.08 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
UNDERWOOD, LANCE D. |
分类号 |
E21B10/24;F16N9/02;F16N11/08;(IPC1-7):E21B10/24 |
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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