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:
Aug. 10, 2021
Filed:
Jan. 11, 2017
H-one Co., Ltd., Saitama, JP;
Hiroyuki Takebe, Saitama, JP;
Fumihiko Sugihara, Saitama, JP;
H-ONE CO., LTD., Saitama, JP;
Abstract
A laser lap welding method is provided. The laser lap welding method includes linearly scanning one side surface of overlapped plural workpieces with a laser beam in a linear scanning range of from a welding start point of the one side surface to a welding end point thereof to weld the plural workpieces; controlling a power of the laser beam to gradually decrease until the laser beam reaches the welding end point when the laser beam reaches a laser power control point in the linear scanning range a predetermined time before the laser beam reaches the welding end point; and performing circular laser scanning using the laser beam around an axis extending in a depth direction of the plural workpieces through the welding end point after the laser beam reaches the welding end point to circularly melt and fluidize a portion of the plural workpieces around the welding end point.