Production by plastic expansion of a sealed tubular joint...

Details Production by plastic expansion of a sealed tubular joint... Production by plastic expansion of a sealed tubular joint...

2004-11-22

2011-10-25

Hewitt, James (Department: 3679)

Pipe joints or couplings

Deformed

Outwardly expanded

C285S382200, C285S334000

Reexamination Certificate

active

08042842

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.

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