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:
Dec. 17, 2013
Filed:
Dec. 02, 2009
Haruhiko Kobayashi, Tochigi-ken, JP;
Satoshi Ohkubo, Utsunomiya, JP;
Shinichi Miyasaka, Utsunomiya, JP;
Koji Oda, Sakura, JP;
Naoki Takahashi, Utsunomiya, JP;
Hideari Kamachi, Utsunomiya, JP;
Haruhiko Kobayashi, Tochigi-ken, JP;
Satoshi Ohkubo, Utsunomiya, JP;
Shinichi Miyasaka, Utsunomiya, JP;
Koji Oda, Sakura, JP;
Naoki Takahashi, Utsunomiya, JP;
Hideari Kamachi, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
The method of lap-welding of metal plates using a laser beam, wherein at least one of the metal plates is surface-treated, includes putting a metal plate on the other metal plate and forming a gap between the metal plates so that gas generated at the treated surface at the time weld can be dissipated therethrough. A surface-treated first work and a surface-treated second work are placed one on the other and clamped by a clamp with an opening of the clamp centered at the location on the first work to be welded. Then a laser beam is directed to the location to form a weld. The beam is then directed near the inner periphery of the opening to form a heated portion so that the heated portion deflects to form a gap through which the gas generated at the treated surface dissipates thereby reducing gas pressure.