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. 31, 2018
Filed:
Jan. 19, 2012
Applicants:
Hideaki Shirai, Anjo, JP;
Tsuyoshi Hayakawa, Hekinan, JP;
Inventors:
Hideaki Shirai, Anjo, JP;
Tsuyoshi Hayakawa, Hekinan, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 9/16 (2006.01); B23K 9/167 (2006.01); B23K 9/29 (2006.01);
U.S. Cl.
CPC ...
B23K 9/164 (2013.01); B23K 9/167 (2013.01); B23K 9/296 (2013.01);
Abstract
An arc welding apparatus disclosed in this specification includes: first electrode; second electrode; and a first gas supply unit which supplies a first shielding gas from the circumference of a base material-side portion of an arc region formed between the first electrode and a base material connected to the second electrode toward the center of the arc region, and controls the ratio of the pressure outside the arc region to the pressure at the center of the arc region to within the range of 70 to 5000.