发明名称 |
SELF-LOCKING TOP DRIVE GUIDE SYSTEM |
摘要 |
A top drive guide system comprising first and second rail sections axially aligned to form a top drive guide rail. A locking member is coupled to the first rail section and is movable between a locked position and an unlocked position. A locking surface is disposed on the second rail section and is operable to engage the locking member when the locking member is in the locked position. An actuator is coupled to the locking member and is operable to move the locking member from the locked position to the unlocked position. |
申请公布号 |
EP2904189(A2) |
申请公布日期 |
2015.08.12 |
申请号 |
EP20130779432 |
申请日期 |
2013.09.23 |
申请人 |
NATIONAL OILWELL VARCO, L.P. |
发明人 |
MARICA, ADRIAN;IONESCU, MIHAI |
分类号 |
E21B17/046;B61B13/00;E21B3/02;E21B7/02;E21B19/15 |
主分类号 |
E21B17/046 |
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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