Mounts for blowout preventer bonnets
US7413019B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2006 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Feb 17, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bonnet locking apparatus is disclosed. The bonnet locking apparatus includes a segmented radial lock disposed around a bonnet and configured to engage a corresponding radial lock disposed in a body of a blowout preventer, at least one spring configured to bias at least one segment of the segmented radial lock in a locked position, and a backup sleeve disposed around the bonnet, wherein at least a portion of the backup sleeve is configured to secure engagement of the segmented radial lock with the corresponding radial lock disposed in the body of the blowout preventer. A method of locking a bonnet to a blowout preventer is also disclosed. The method includes assembling a segmented radial lock around a bonnet, wherein at least one segment of the radial lock is biased towards a locked position, inserting the bonnet into an opening in the blowout preventer, wherein an outer surface of the segmented radial lock contacts a surface of the opening, thereby moving the at least one segment of the segmented radial lock radially inward, until the at least one segment of the segmented radial lock extends radially outward into engagement with a corresponding radial lock disposed in the blowout…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.