Patent ID: 7699361

Claim:
An expandable tubular joint, comprising: a first tubular male element, comprising a first male threading and a ring shaped lip having a first axial stop surface at a free end of the first element; and a second tubular female element comprising a second female threading, matching the first threading, and a receiving element matching the male lip, having a second axial stop surface, the first threading configured to be screwed into the second threading to bring the two stop surfaces into mutual contact, and a peripheral surface of the receiving element radially facing inwards comprising a first inclined shoulder fitting facing towards the second axial stop surface and distal from another inclined shoulder fitting axially facing in an opposite direction to said axial stop surfaces and formed on a peripheral surface of the first tubular male element radially facing outwards, wherein, upon expansion of the joint, the shoulders are in sealed mutual contact with radial interference.