Retrievable guide post system
US4927295A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1989 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Jan 9, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A retrievable guide post for installation in a subsea structure such as a template or a permanent guide base receptacle and for retrieval therefrom including a tubular body, a sleeve slidable axially on the lower exterior of the tubular body, a groove in the exterior of the sleeve a short distance below its upper end, a groove in the exterior of the tubular body a short distance above the uppermost position of the upper end of the sleeve, a split latching ring supported on the exterior of the tubular member immediately below the lower end of the sleeve in its upper position, a support ring positioned below the split latching ring to support the latching ring at its desired latching level, a pin and slot connection between the support ring to the tubular body to allow relative limited axial motion of the support ring on the tubular body and a shear pin releasably securing the support ring to the tubular body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.