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:
Nov. 09, 1976
Filed:
Oct. 20, 1975
Applicant:
Inventors:
Damian V Gullotti, Cheshire, CT (US);
Philip R Sperry, North Haven, CT (US);
William C Setzer, Creve Coeur, MO (US);
Assignee:
Swiss Aluminium Ltd., Chippis, CH;
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 148 / ; 148 13 ;
Abstract
A method of heat treating aluminum alloys of the aluminum magnesium-silicon type to improve processibility by extrusion which comprises initially homogenizing the alloys at an elevated temperature below the equilibrium solidus temperature of the alloy for from 2 to 12 hours, further homogenizing said alloys at an elevated temperature below the initial homogenization temperature and below the solvus temperature of the alloy for from 2 to 12 hours and slowly cooling said alloys to at least 800.degree. F at a rate of less than 100.degree. F per hour.