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. 06, 2018
Filed:
Oct. 16, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Hiroomi Kobayashi, Okazaki, JP;
Keisuke Uchida, Nagoya, JP;
Ryo Watanabe, Toyota, JP;
Yuto Tanaka, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
Provided is a laser welding apparatus that performs welding by irradiating a laser beam onto a welded part, the laser welding apparatus including: a shielding gas supply unit that supplies a shielding gas to the welded part; a gas feed rate controlling unit that controls a flow rate of the shielding gas; a light intensity measurement unit that measures a light intensity of plasma light emitted from the welded part; and a rate-of-change calculation unit that calculates a rate of change of the light intensity measured by the light intensity measurement unit. The gas feed rate controlling unit controls, according to the calculated rate of change of the light intensity, the flow rate of the shielding gas supplied to the welded part.