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:
Sep. 18, 2012
Filed:
Nov. 26, 2007
Katsuhiko Mori, Osaka, JP;
Katsuhiko Mori, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A battery case is formed by drawing a metallic plate thin to form a cylindrical bodyhaving a closed end and cutting away part of the cylindrical bodyat an openingthereof in the direction perpendicular to an axis of the cylindrical body. The cutting of the cylindrical bodyis carried out by moving a second bladearranged outside the cylindrical bodyrelatively toward the axis of the cylindrical body with a first blade kept abutting the inner circumference of the cylindrical body. As a result, an inward burrextending in the direction perpendicular to the side face of the cylindrical bodyis formed on a cut surfaceof the cylindrical body, but the burris prevented from entering the battery case.