Apparatus for handling and racking pipes
US7331746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2004 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for handling pipes in a derrick and racking the pipes on a pipe racking assembly mounted on the derrick is provided to improve the stability of transferring pipes during a round trip operation. The apparatus includes a rotatable gate assembly mounted on the pipe racking assembly. The rotatable gate assembly includes a collar rotatably mounted to a first end of a shaft and an arm pivotably and rotatably mounted on a second end of the shaft. The collar defines a gate for securing an upper portion of the pipe stand. A first securing means mounted to a second end of the arm secures the mid-portion of the pipe stand and a second securing means mounted to the first securing means secures the lower portion of the pipe stand. After the arm secures the pipe stand from the derrick, a drive mechanism mounted to the shaft rotates the rotatable gate assembly such that the arm may rack the pipe on the pipe racking assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.