Knuckle swivel for servicing wells
US7661901B2 · kind B2 · utility
0Cited by
8References
4Claims
0Family size
Inventor
Key dates
| Filing date | May 15, 2007 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | May 15, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32606
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A knuckle-swivel (10) is used with well drilling equipment for protecting helical wound line 62, which may be wire rope, cable and/or strand, against torsional forces and also providing for angular displacement of sinker bars or other tools during wireline strip over operations to minimize interference with rig equipment (80) when pulling pipe or tools 64 from a well head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.