Production by plastic expansion of a sealed tubular joint with inclined abutting surface(s)
US8042842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2004 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jun 14, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubular joint, with a first male tubular element, with a male thread, a first annular lip, with a first axial abutting surface, a first internal surface, a section of a first external surface, a second abutting surface and a second female tubular element, with a female thread, matching the male thread, a second annular lip, with a third abutting surface, a second external surface, arranged to face the first internal surface, a second internal surface and a fourth axial abutting surface, supporting the first abutting surface and defining, in particular with the second external surface, an annular housing, matching the first lip. The second and third abutting surfaces being conical with effectively identical inclines and which permit generating a first radial sealing contact of the first internal surface or external surface against the second external surface, or the third internal surface, and, with expansion, provides a second sealing contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.