Drilling rig employing top drive
US9790751B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2013 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Nov 2, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus includes a carriage movable along a drilling tower, a linking member pivotally coupled to the carriage, at least one actuator extending between the carriage and the linking member to pivot the linking member between first and second pivot positions, and a top drive pivotally coupled to the linking member. According to another aspect, an apparatus includes a drilling tower, a carriage movably coupled to the drilling tower, a linking member pivotally coupled to the carriage to permit the linking member to pivot between first and second pivot positions, and a top drive extending longitudinally in a parallel relation to the drilling tower, the top drive being pivotally coupled to the linking member to permit the top drive to continue to extend longitudinally in a parallel relation to the drilling tower when the linking member pivots between the first and second pivot positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.