Expandable tubular connection
US7585002B2 · kind B2 · utility
19Cited by
26References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | May 19, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/008
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An expandable tubular pin and box connection is described having a feature of trapping the pin nose after preferably deforming the pin nose plastically in an outward direction away from the longitudinal axis of the connection. The box end is held away from the pin wall before expansion so that its tendency to curl inwardly upon expansion causes it to bend against the pin wall for sealing with it. The thread profile is also optimized to reduce flank separation as a result of expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.