Top drive counter moment system
US9404318B2 · kind B2 · utility
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3References
16Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 26, 2013 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Aug 7, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/086
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Present embodiments are directed to a top drive system comprising a hoisting assembly having an upper link, a lower link, and a first joint coupling the upper link and the lower link. The top drive system also includes a main body coupled to the hoisting assembly by a second joint, wherein the hoisting assembly is configured to support the main body, and the main body is configured to support a tubular. Further, the top drive system includes a frame coupled to the main body and a counter moment system configured to apply a force on the first joint to create a bending moment about the second joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.