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:
Feb. 08, 2011
Filed:
Sep. 08, 2005
Ludovic Fontaine, Aulnoye-Aymeries, FR;
Benoit Duquesne, Valenciennes, FR;
Gregory Molins, Valenciennes, FR;
Ludovic Fontaine, Aulnoye-Aymeries, FR;
Benoit Duquesne, Valenciennes, FR;
Gregory Molins, Valenciennes, FR;
Vallourec Mannesmann Oil & Gas France, Aulnoye-Aymeries, FR;
Abstract
A male element for a sealed threaded tubular connection. Before tapered reduction swaging of an end region of a tube and machining in the region of a tapered male threading and a male lip to obtain a male tubular element for makeup into a female tubular element to form a sealed threaded tubular connection after diametrical expansion, the tube is shaped over a portion of its length to produce a cylindrical internal surface that connects via a chamfer to the cylindrical internal surface of the lip obtained subsequently by machining, the radius of the first surface being greater than the radius of the second surface.