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:
Aug. 28, 2012
Filed:
Mar. 02, 2009
Syuichi Yamashita, Moriguchi, JP;
Masanori Ogi, Moriguchi, JP;
Toyoshige Muto, Moriguchi, JP;
SANYO Electric Co., Ltd., Moriguchi-shi, Osaka, JP;
Abstract
The present invention provides a sealed batteryincluding an electrode bodyformed by winding a positive electrode plate, a negative electrode plateand a separatorinterposed therebetween so as to have a hollow portionat the center, a tube-shaped center pininserted in the hollow portion, a battery outer cancontaining the electrode body, an external terminalalso serving as a safety valveevacuating gas when a gas pressure in the battery outer canexceeds a predetermined value. A slitis formed on a peripheral surface of the center pin, and a cutout partis formed on at least an end of the center pinat the external terminalside.