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:
Jul. 26, 2005
Filed:
Feb. 10, 2004
Applicants:
Matteo Morotti, Bergamo, IT;
Diego Dell'erba, Campana, AR;
Giuseppe Della Pina, Treviolo, IT;
Inventors:
Assignee:
Tenaris Connections A.G., Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L015/04 ;
U.S. Cl.
CPC ...
Abstract
Described herein is a threaded joint, in which the threads are coated with a layer of dry lubricant having a thickness of between 5 μm and 30 μm and in which the nominal void volume NVV of the space () between the thread of the male tube and the thread of the female tube, is sized by means of the following formulae:where OD is the nominal outer diameter and Wt is the thickness of the wall of the pipes.