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. 08, 2022
Filed:
Feb. 28, 2020
Applicant:
Kobe Steel, Ltd., Kobe, JP;
Inventors:
Koki Sugino, Kobe, JP;
Masatoshi Yoshida, Kobe, JP;
Assignee:
Kobe Steel, Ltd., Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/01 (2006.01); B21D 7/00 (2006.01); B21D 7/08 (2006.01); B61F 5/52 (2006.01); B65B 59/00 (2006.01); B32B 27/08 (2006.01);
U.S. Cl.
CPC ...
B21D 7/00 (2013.01); B21D 7/08 (2013.01); B32B 27/08 (2013.01); B61F 5/52 (2013.01); B65B 59/001 (2019.05);
Abstract
To suppress occurrence of stress corrosion cracking in a weld due to tensile residual stress generated in a web or a middle rib in case of bend forming of an aluminum alloy extrusion having the weld on the web or/and the middle rib. In bend forming of the aluminum alloy extrusion, a peak position of tensile residual stress generated in the middle rib exists in a region other than the vicinity of the weld. Since the peak position is away from the weld by a distance, tensile residual stress in the weld is reduced, making it possible to suppress occurrence of stress corrosion cracking.