Motorized rotary swivel equipped with a dynamometric measuring unit
US5272925A · kind A · utility
82Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Aug 7, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A motorised rotary swivel for driving drill pipe in rotation is disclosed. The swivel includes a measuring unit for measuring a dynamometric behavior of the drill pipe which is mounted adjacent to the output of the motor between the motor and a torque wench assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.