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:
Oct. 19, 2004
Filed:
Aug. 10, 2001
Applicant:
Inventors:
Kiyoshi Hanafusa, Hyogo, JP;
Hiroichi Ishida, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/12 ;
U.S. Cl.
CPC ...
H01M 2/12 ;
Abstract
A battery ( to to ) includes a cylindrical or polygonal exterior can ( ); a safety valve ( to ) provided to the exterior can ( ) to reduce an internal pressure of the battery ( to to ). The exterior can ( ) includes: a relatively thick portion ( ) and a relatively thin portion ( to to ). The relatively thin portion ( to to ) constitutes the safety valve ( to ).