发明名称 |
Bearing assembly |
摘要 |
A bearing assembly, for a drive shaft connected to an in-hole motor rotor to drive a bit and a housing connected to the motor stator has sets of oppositely acting thrust bearings having corresponding members of bearings and parts at opposite sides of a thrust member on the shaft. Plural sets of thrust bearings are shown between spaced radial bearings to optimize load distribution.
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申请公布号 |
US4260202(A) |
申请公布日期 |
1981.04.07 |
申请号 |
US19790067923 |
申请日期 |
1979.08.20 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
CRASE, GARY M.;TRZECIAK, KURT M. |
分类号 |
E21B4/00;F16C19/54;(IPC1-7):F16C19/00 |
主分类号 |
E21B4/00 |
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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