Sealed tubular joint comprising local and initial added...

Details Sealed tubular joint comprising local and initial added... Sealed tubular joint comprising local and initial added...

2011-04-26

2011-04-26

Hewitt, James M (Department: 3679)

Pipe joints or couplings

Deformed

Outwardly expanded

C285S333000, C285S382000, C285S382200

Reexamination Certificate

active

07931311

ABSTRACT:
An expandable tubular joint including a male element with a male thread, a first annular lip having a first axially abutting surface, a first inner surface and a first outer surface, and a second abutting surface; and a female element with a female thread, a second annular lip having a third abutting surface, a second outer surface and a second inner surface, and a third inner surface and a fourth axially abutting surface which, together with the second outer surface, defines a first annular housing. The male tubular element includes a local added thickness at a fourth inner surface projecting out from the second abutting surface. After screwing, the first lip is housed in the annular housing and the abutting surfaces rest against one another, in order to enable the formation of an annular shoulder at the first outer surface during diametral expansion.

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