Gripping member for well tools
US4212352A · kind A · utility
6Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/129
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A unitary tubular cylindrical gripping member for well tools has variable angled gripping surfaces formed thereon by a plurality of insert teeth elements arranged to provide constant positive gripability of the gripping member in well casings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.