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:
Feb. 19, 2019
Filed:
Mar. 30, 2016
Fdk Energy Co., Ltd., Kosai-shi, Shizuoka, JP;
Tatsuya Yamazaki, Kosai, JP;
Shigeyuki Kuniya, Kosai, JP;
FDK Corporation, Tokyo, JP;
Abstract
In a cylindrical battery including a gap formed between a peripheral side surfaceof a dish-shaped portion in an anode terminal plateand a curved end portionof a cathode can, and a washerhaving a cylindrical boss portionand an annular flange portionprovided around an upper end surface of the cylindrical boss portionthe washerbeing mounted to an opening portion of a cathode cansuch that the cylindrical boss portionis fitted into the gap, a vent structure configured to release gas released to the gapfrom a first vent holein the anode terminal plateto an exterior of the cylindrical battery () from an arc-shaped second vent hole () formed in the flange portion() or an annular gap () formed between the upper end surface of the cylindrical boss portion () and the terminal plate().