The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2009
Filed:
Jun. 11, 2003
Eric Verger, Gommegnies, FR;
Albert Bruneau, Boulogne Billancourt, FR;
Antoine Durand, Valenciennes, FR;
Eric Verger, Gommegnies, FR;
Albert Bruneau, Boulogne Billancourt, FR;
Antoine Durand, Valenciennes, FR;
Vallourec Mannesmann Oil & Gas France, Aulnoye-Aymeries, FR;
Abstract
The invention relates to a high-performance threaded tubular joint comprising a first, male tubular element () and a second, female tubular element () made up together by screwing. One of the tubular elements () has a non-threaded lip () extending between its thread and its free end and having a sealing surface () in sealing-tight contact with the opposite surface () of the other element after screwing together, diametric expansion, and then generation of springback forces of the first and second tubular elements. The joint has a tubular sleeve () threaded over the second element () before screwing together and positioned to extend axially substantially opposite to the lip () and, after diametric expansion, generating a springback force which is added to that of the second element in order to counteract the springback force of the first element, thus effecting at least the shrink-fitting of the tubular sleeve over the second element.