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. 15, 2009
Filed:
Dec. 24, 2002
Applicants:
Antoine Durand, Valenciennes, FR;
Andrei G. Filippov, Ab Rijswijk, NL;
Inventors:
Antoine Durand, Valenciennes, FR;
Andrei G. Filippov, Ab Rijswijk, NL;
Assignee:
Vallourec Mannesmann Oil & Gas France, Aulnoye Aymeries, FR;
Primary Examiner:
Int. Cl.
CPC ...
F16L 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tubular joint for hydrocarbon wells including a male tubular element and a female tubular element including respective sealing faces configured to come into mutual sealing-tight contact after sliding over one another during assembly and/or during radial expansion of the joint. At least one of the sealing faces is equipped with an adhesive coating of a more ductile material than the material of the substrate and of a thickness greater than 17 μm, capable of increasing the effective contact area of the sealing faces.