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. 16, 2001
Filed:
Jul. 14, 1998
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A metallic outer case has an opening portion. A first corner portion is provided at an outer periphery of the opening portion. A power generating element is stored within the outer case. The power generating element has a positive electrode and a negative electrode opposed to each other, with a separator interposed. An end face of the opening portion is sealed by a metallic cover member. The cover member has a second corner portion corresponding to the first corner portion of the outer case, and welded to the outer case, with a coupled portion between the cover member and the outer case irradiated with a laser beam. Those portions of the first corner portion of the outer case and the second corner portion of the cover member, which are irradiated with the laser beam, are shaped as angular portions of substantially the same shape.