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:
Feb. 16, 2021
Filed:
Mar. 06, 2017
Jfe Steel Corporation, Tokyo, JP;
Asato Hara, Tokyo, JP;
Yasushi Kitani, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A laser lap-welded joint being formed from stacked steel sheets and including a plurality of welded portions each having a substantially C-shaped surface, each of the welded portions being formed of a first linear portion and second linear portions having a surface having a semicircular shape. The radius R of the semicircular shape and the sheet thickness t of one of the steel sheets having a larger sheet thickness satisfy 0<R≤1.5 t. The pitch λ between the adjacent welded portions and a weld length l satisfy 0.4≤l/λ<0.7. The space X between an end of a contact portion where the steel sheets are in contact with each other and each of the welded portions satisfy 2 t≤X≤4 t. The sheet thickness t and the width W of each of the welded portions satisfy 0.3≤W/t≤1.0.