Power tong wrench
US6082225A · kind A · utility
49Cited by
8References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/164
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A power tong wrench having an open slot to accommodate a range of pipe diameters capable of making and breaking pipe threads and spinning in or out the threads and in which hydraulic power is supplied with a pump disposed within a rotary assembly, which pump is powered through a non-mechanical coupling, preferably magnetic, to a motor disposed outside the rotary assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.