| 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 | US9074421(B2) | 申请公布日期 | 2015.07.07 |
| 申请号 | US201213645988 | 申请日期 | 2012.10.05 |
| 申请人 | NATIONAL OILWELL VARCO, L.P. | 发明人 | Marica Adrian;Ionescu Mihai |
| 分类号 | E21B19/00;E21B3/02;E21B7/02;E21B17/046;E21B19/15;E21B19/10;E21B19/22;E21B19/24 | 主分类号 | E21B19/00 |
| 代理机构 | Porter Hedges LLP | 代理人 | Forinash Derek V.;Porter Hedges LLP |
| 主权项 | 1. A top drive guide system comprising: a first rail section having an upper end and a lower end; a second rail section having an upper end coupled to the lower end of the first rail section; a locking surface coupled to the lower end of the first rail section; a locking member coupled to the upper end of the second rail section and movable between a locked position wherein the locking member is engaged with the locking surface and an unlocked position wherein the locking member is disengaged from the locking surface; and an actuator coupled to the locking member and operable to move the locking member from the locked position to the unlocked position, wherein the actuator extends from the locking member through the second rail section to the lower end of the second rail section. | ||
| 地址 | Houston TX US | ||