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. 13, 2016
Filed:
Mar. 28, 2014
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Keisuke Uchida, Nagoya, JP;
Masashi Furukawa, Toyota, JP;
Hiroomi Kobayashi, Okazaki, JP;
Atsushi Kawakita, Miyoshi, JP;
Shuhei Ogura, Nagakute, JP;
Hiroaki Kishi, Toyota, JP;
Eiji Akamatsu, Toyota, JP;
Yuta Iwamoto, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
A welding laser beam (L) is radiated along welding loci (C, C) set in workpieces (W, W), or an inspection laser beam (L) is radiated along scanning loci (C, C) set in a molten pool (Y) of the workpieces that are molten by radiation of the welding laser beam, a returned light beam (L) including reflection light from the molten pool, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity of a returned light beam received in a first region inside the molten pool which is relatively close to a given point and an intensity of a returned light beam received in a second region inside the molten pool which is relatively spaced from the given point.