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:
Jan. 18, 2005
Filed:
Sep. 24, 2002
Wataru Shinohara, Moriguchi, JP;
Yasuaki Yamamoto, Moriguchi, JP;
Hiroshi Hosokawa, Moriguchi, JP;
Yasuhiro Yamauchi, Moriguchi, JP;
Wataru Shinohara, Moriguchi, JP;
Yasuaki Yamamoto, Moriguchi, JP;
Hiroshi Hosokawa, Moriguchi, JP;
Yasuhiro Yamauchi, Moriguchi, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A method of manufacturing a sealed battery that is able to keep productivity as high as possible while suppressing cracking incident to welding using an energy beam, such as a laser beam. A material such as an aluminum alloy is used for the external casing and the cover plate. The cover plate bas a rib, which is formed on the outer edge of the cover plate, and a flat part. The external casing rim and the outer edge of the cover plate are welded together, the thickness of the external casing at the rim is made small. A closure cap is fit into the external casing. The closure cap and external casing are welded together and the molten part is gradually cooled.