Coiled tubing injector with limited slip chains
US9458682B2 · kind B2 · utility
1Cited by
53References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2015 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Sep 11, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coiled tubing injector comprises a drive system for independently driving a plurality of chains independently but otherwise retarding relative motion between the driven chains when a chain begins to slip uncontrollably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.