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:
Jan. 11, 1994
Filed:
Oct. 30, 1992
G William Kuhlman, Cleveland, OH (US);
Paul E Magnusen, Plum Boro, PA (US);
Paul L Mehr, Lower Burrell, PA (US);
Dell F Skluzak, Huntington Beach, CA (US);
Andrew C Spitznas, Davenport, IA (US);
Paul T Wang, Murrysville, PA (US);
Charles J Warren, Sarver, PA (US);
Kenton P Young, Davenport, IA (US);
John A Schelin, Bettendorf, IA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
Disclosed is a method of producing a forged and rolled Al-Zn-Cu-Mg alloy plate product having improved fatigue properties in the long transverse direction. The method comprises providing a body of an Al-Zn-Cu-Mg alloy, working said body by a forging operation to reduce its thickness in a C direction by at least 30% and rolling or working the forged body to provide a forged and rolled plate product having improved fatigue properties in the long transverse direction.