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:
Oct. 21, 1997
Filed:
Nov. 16, 1995
Applicant:
Inventor:
Giulio Fontana, Sesto San Giovanni, IT;
Assignee:
AGIP S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 / ; 138143 ; 138D / ; 285 55 ; 285 94 ;
Abstract
An anti-seizure protection for a threaded joint or sleeve, particularly suitable for the petroleum sector, comprises a first film layer of a copper-zinc alloy anchored to the threads of the joint and a second film layer of lead anchored to the first layer. The anchoring is preferably achieved by ionic deposition.