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:
Apr. 30, 1996
Filed:
Apr. 13, 1994
Applicant:
Inventors:
Lawrence S Kramer, Clarksville, MD (US);
Joseph R Pickens, Glenelg, MD (US);
Carl E Cross, Idaho Springs, CO (US);
Assignee:
Martin Marietta Corporation, Bethesda, MD (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
420528 ; 148516 ; 148524 ; 148689 ; 148437 ; 148438 ; 148439 ; 420529 ; 420531 ; 420532 ; 420533 ; 420539 ; 420540 ; 420542 ; 420552 ; 420553 ;
Abstract
Weld filler alloys comprising aluminum, copper, lithium and, optionally, silver are disclosed which possess significantly improved fabricability and weldability. The weld filler alloys are free of magnesium and can be easily drawn into weld wire that is useful for welding aluminum-base alloys. Weldments made with the filler alloys exhibit highly improved mechanical, physical and corrosion resistance properties. The weld filler alloys may be used to weld cryogenic containers for space launch vehicles and the like.