Casing head connector with landing base
US6834718B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jul 9, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A connector head, for transferring at least a portion of the load from an inner tubular body onto an outer tubular body, comprises a generally tubular connector head formed with a central bore through which the inner tubular body extends. The connector head has an inwardly extending stop shoulder to allow the connector head to rest on the upper end of the inner tubular body. A slip connecting means is located in the connector head for gripping the outer wall of the inner tubular body. A base plate, formed with a central bore therethrough, is located below the connector head and is adapted to rest on the upper end of the outer tubular body. A retainer ring, formed with a central bore therethrough, is located between the connector head and the base plate and includes a plurality of threaded stud members extending therethrough allowing the retainer ring to slide upwardly and downwardly on the threaded stud members. Tightening of upper nuts against the retainer ring pushes the retainer ring upwardly to force the slip to grip the inner tubular body, and downward tightening of lower nuts against the base plate transfers at least a portion of the load from the inner tubular body to the ba…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.