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:
Nov. 25, 2014
Filed:
Dec. 21, 2011
Takashi Sumida, Kyoto, JP;
Takashi Sumida, Kyoto, JP;
Hitachi Maxell, Ltd., Ibaraki-Shi, JP;
Abstract
A sealed battery includes: a columnar battery case encapsulating a chargeable/dischargeable electrode assembly and electrolyte in an interior and having a vent that cleaves up when a pressure in the interior exceeds a threshold; a cover that covers at least a portion of an outer surface of the vent of the battery case to prevent the vent from being covered with resin which is formed on the battery case; and a temperature protection device electrically connected with a terminal of the battery case and capable of blocking electric current when a temperature exceeds a threshold. The cover includes an overhang located to cover at least a portion of the temperature protection device when the temperature protection device is mounted on the cover. The temperature protection device is at least partially covered with the overhang and, together with the cover, covered with the resin.