Snubbing jack capable of reacting torque loads
US11142439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jun 20, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/086
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A snubbing jack including a jack assembly including a base plate, a traveling plate, an axis extending through the base plate and the traveling plate, and a plurality of piston-cylinder assemblies, a rotary drive including a rotary base and a hub, wherein the rotary drive is configured to rotate the hub relative to the rotary base, a clamp coupled to the rotary base and configured to grip a first tubular member, a power tongs coupled to the rotary base and configured to grip a second tubular member and to rotate the second tubular relative to the rotary base, and a torque transfer device coupled between the rotary drive and the jack assembly and configured to allow the rotary drive to move axially relative to the base plate and configured to restrict rotation of the rotary drive relative to the jack assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.