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:
Jul. 21, 2026
Filed:
Dec. 12, 2023
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Naoaki Munemura, Tokyo, JP;
Koichi Taniguchi, Tokyo, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 20/12 (2006.01); B23K 20/24 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
B23K 20/122 (2013.01); B23K 20/24 (2013.01); B23K 20/1295 (2013.01); B23K 2103/04 (2018.08);
Abstract
A friction element welding method for welding a sheet set that includes two or more overlapping metal sheets by pressing a rotating element having a tapered portion at a tip into the sheet set, the method includes a first step of removing a film of oxide on an upper surface of a lower sheet disposed as a lowermost layer of the sheet set, and a second step of pressing the rotating element into the lower sheet to form a welded portion.