Power tong interlock system
US9995095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jun 26, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/164
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A power tong assembly includes a power tong and an interlock system operably coupled to the power tong. The power tong is configured to grip and rotate a tubular segment in a first direction to make-up a threaded connection with the tubular segment and in a second direction to break-out the threaded connection with the tubular segment. The interlock system is configured to selectively allow the power tong to rotate the tubular segment in one of the first direction and the second direction unrestricted while restricting the power tong to rotate the tubular segment in the other of the first direction and the second direction at a limited speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.