Threaded tubular connection with progressive axial thread interference
US7661728B2 · kind B2 · utility
3Cited by
13References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2004 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | May 21, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0423
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded connection includes at least one contact zone axially separated from threadings in which male and female elements are in sealed contact via bearing surfaces respectively constituted by a cambered surface and by a tapered surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.