Drill pipe handling and placement apparatus
US4547109A · kind A · utility
Inventors
Key dates
| Filing date | Jun 8, 1983 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Jun 8, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cylindrical goods lifting and placement apparatus comprises a platform, an angularly disposable frame pivotably connected to the platform and having a drill pipe holding system for holding a length of drill pipe. An angularly displaceable member is pivotably connected to the platform and has a cylinder and piston assembly for angularly displacing the member from a first position substantially adjacent the holding system. Drill pipe grippers are connected to the member and the grippers are rotatable on an axis from a first position to a second position substantially aligned with the holding system. A drive system for rotating the pipe grippers is provided. Similarly, a drive system for operating the grippers is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.