Male element for a sealed threaded tubular connection
US7883120B2 · kind B2 · utility
1Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2005 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/001
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A male element for a sealed threaded tubular connection. Before tapered reduction swaging of an end region of a tube and machining in the region of a tapered male threading and a male lip to obtain a male tubular element for makeup into a female tubular element to form a sealed threaded tubular connection after diametrical expansion, the tube is shaped over a portion of its length to produce a cylindrical internal surface that connects via a chamfer to the cylindrical internal surface of the lip obtained subsequently by machining, the radius of the first surface being greater than the radius of the second surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.