Pipe handling device and safety mechanism
US8037932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2010 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jan 6, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/086
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pipe handling assembly includes a pipe engaging apparatus having a pipe gripping mechanism connectable to a top drive such that the top drive transmits rotational movement and axial movement to the pipe gripping mechanism. A pipe handling device is mounted onto the pipe engaging apparatus, the pipe handling device including a link hanger mounted on the pipe engaging apparatus. A link arm has a first end pivotally connectable to the link hanger and an outboard end selected to carry a pipe into a position to be gripped by the pipe engaging apparatus. A bearing isolates rotational movement to the pipe gripping mechanism from the link hanger. A connection rigidly connects the link hanger to the pipe engaging apparatus during operation of the pipe handling assembly. The connection is selected to substantially prevent the link hanger from rotating with the pipe gripping mechanism should the bearing seize.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.