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:
Jun. 10, 2008
Filed:
Apr. 24, 2002
Koji Oda, Tochigi-ken, JP;
Naoki Fukai, Higashimatsuyama, JP;
Jun Kitagawa, Utsunomiya, JP;
Junya Tanabe, Tochigi-ken, JP;
Keiji Otsuka, Tochigi-ken, JP;
Koji Oda, Tochigi-ken, JP;
Naoki Fukai, Higashimatsuyama, JP;
Jun Kitagawa, Utsunomiya, JP;
Junya Tanabe, Tochigi-ken, JP;
Keiji Otsuka, Tochigi-ken, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
While steel sheets are positioned and held by a holding mechanism, a first laser beam is applied to a heating region of the steel sheet to space the steel sheet from the other steel sheet by a predetermined distance. A second laser beam is applied to a welding region to weld the steel sheets. An amount of heat applied by the first laser beam, a moving speed of the first laser beam, and a focused spot diameter of the first laser beam are set to keep the sheet irradiated with the first laser beam in an unmelted state and plastically deform the sheet.