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:
Jul. 19, 2005
Filed:
Feb. 25, 2002
Hideaki Shirai, Okazaki, JP;
Koji Murakami, Chiryu, JP;
Norio Tanaka, Kariya, JP;
Yoshiki Kariya, Nishio, JP;
Hiroyuki Nishina, Okazaki, JP;
Takayuki Hokao, Anjo, JP;
Hideaki Shirai, Okazaki, JP;
Koji Murakami, Chiryu, JP;
Norio Tanaka, Kariya, JP;
Yoshiki Kariya, Nishio, JP;
Hiroyuki Nishina, Okazaki, JP;
Takayuki Hokao, Anjo, JP;
Denso Corporation, , JP;
Abstract
In a welding machine and welding method, for welding cylinder members together about an outside diameter, which prevents the cylinder members from being deformed and corrects the deformation of a portion to be welded, a laser beam, generated by a laser generator, is dispersed in two directions by a spectroscope. The laser beams focus on an outer cylinder member using two optical heads, respectively, in a plane perpendicular to a center axis of outer cylinder member. The optical heads are separated from each other by approximately 90 degrees in the plane. The outer and inner cylinder members are welded to each other in the circular direction using laser beams. Therefore, directions, in which the cylinder members are deformed due to the laser beams, are perpendicular to each other creating uniform radial deformation.