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:
Mar. 06, 2012
Filed:
Mar. 29, 2007
Hajime Nishino, Nara, JP;
Tomomichi Ueda, Osaka, JP;
Kyousuke Miyata, Osaka, JP;
Mikinari Shimada, Osaka, JP;
Hajime Nishino, Nara, JP;
Tomomichi Ueda, Osaka, JP;
Kyousuke Miyata, Osaka, JP;
Mikinari Shimada, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
To operate a safety mechanism normally even when an accident happens. For this object, an electrochemical element includes an exhaust valve that operates when an internal pressure in a casingreaches a predetermined pressure to release gas occurring in the casing to the outside, and a perforated platehaving holesand, which is provided between an electrode groupand the exhaust valve. The area of the perforated plateexcluding the holesandis 20% or more and 50% or less of the area of the opening of the casing. The perforated plateis adapted for electrically insulating the electrode groupfrom the sealing member