发明名称 |
Motor shaft security apparatus |
摘要 |
An interference structure is provided in a drilling motor to engage the motor drive shaft assembly if the thrust bearings fail and the drive shaft moves axially a preselected amount. The interference structure is protected from wear common to drilling motor use. The structure assures the recovery of all drilling motor parts if all thrust bearings fail.
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申请公布号 |
US2010187013(A1) |
申请公布日期 |
2010.07.29 |
申请号 |
US20090321827 |
申请日期 |
2009.01.26 |
申请人 |
TOMAHAWK DOWNHOLE LLC |
发明人 |
FALGOUT, JR. THOMAS E.;DAIGLE CHAD M. |
分类号 |
E21B4/00;H02K7/10 |
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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