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:
Mar. 30, 2004
Filed:
May. 22, 2002
Jean-Luc Coulon, Monceau Saint Waast, FR;
Thierry Noel, Sebourg, FR;
Gabriel Roussie, Mons en Baroeuil, FR;
Emmanuel Varenne, Villefranche-sur-Saone, FR;
Vallourec Mannesmann Oil & Gas France, Aulnoye-Aymeries, FR;
Abstract
A threaded joint to be expanded, including a lip at the end of the male element end a housing for the lip on the female element to make the threaded joint capable of being sealed and of having a maximum internal passage cross-section after being subjected to diametral expansion by more than 10%. The free male end surface is socketed before expansion into a partially transverse shoulder surface of the female housing through the matching rebating shapes of the surfaces. And, the male lip outer peripheral surface is arranged with little play of the internal peripheral surface of the female housing. Such a threaded joint is particularly useful for casings and tubings used in oil wells.