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:
Jul. 24, 2012
Filed:
Dec. 12, 2008
Satoshi Suzuki, Toyota, JP;
Hiroya Kondou, Toyohashi, JP;
Masato Komatsuki, Gifu, JP;
Youichi Naruse, Nagoya, JP;
Satoshi Suzuki, Toyota, JP;
Hiroya Kondou, Toyohashi, JP;
Masato Komatsuki, Gifu, JP;
Youichi Naruse, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A sealed battery includes a battery case with a liquid inlet, a power generating element in the case, a lid member closing the liquid inlet and having a peripheral edge welded to the case over the entire circumference, a circular groove in the outer surface of the case and around the entire periphery of the liquid inlet, a peripheral portion provided over the entire periphery of a portion in the back surface of the lid member facing the liquid inlet, and a protrusion partially placed around the liquid inlet between the circular groove and the peripheral portion to form a clearance between the circular groove and the peripheral portion. The space facing the inner surface in a portion melted during welding between the peripheral edge and the case is continuous to the liquid inlet through a clearance formed by the protrusion between the circular groove and the peripheral portion.