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. 16, 2010
Filed:
Mar. 22, 2005
Gabriel Roussie, Cappelle en Pevele, FR;
Jacky Massaglia, Saint-Saulve, FR;
Gabriel Roussie, Cappelle en Pevele, FR;
Jacky Massaglia, Saint-Saulve, FR;
Vallourec Mannesmann Oil & Gas France, Aulnoye-Aymeries, FR;
Sumitomo Metal Industries, Ltd., Osaka-shi, JP;
Abstract
A threaded tubular connection includes a male tubular element including a male threaded portion and a female tubular element including a female threaded portion that cooperates by screwing with the male threaded portion. The threaded connection includes at least one transfer zone that can transfer bending loads between the elements and that is axially spaced from the threaded portions, in which the male and female elements have an undulating surface and a smooth surface facing each other, the undulating surface defining a series of rounded annular ribs that come into contact with the smooth surface with a radial interference fit. The connection may find application to production strings for hydrocarbon wells.