Drill pipe handling device
US4834441A · kind A · utility
10Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Nov 25, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device to facilitate the handling of drill pipe which obviates the necessity of climbing the drill rig tower to attach or detach the lifting device. The device comprises a collar which is temporarily attached to the drill pipe and a basket device having a lifting bail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.