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:
Dec. 05, 2006
Filed:
Aug. 25, 2005
Kiyohide Tsutsui, Shizuoka, JP;
Norihisa Watanabe, Aichi, JP;
Itsue Yoshioka, Shizuoka, JP;
Yuji Tsuchida, Shizuoka, JP;
Kiyohide Tsutsui, Shizuoka, JP;
Norihisa Watanabe, Aichi, JP;
Itsue Yoshioka, Shizuoka, JP;
Yuji Tsuchida, Shizuoka, JP;
FDK Energy Co., Ltd., Shizuoka, JP;
Abstract
An alkaline battery sealing gasketmade of a resin, comprises a peripheral packing portionsandwiched in a pressed state between an opening end of a metal battery canthat contains an electricity generating elementand doubles as a positive electrode terminal and a negative electrode terminalso as to seal the opening end with an airtight manner; and an isolation wall portionfor isolating a space on a back side of the negative electrode terminal from a space containing the electricity generating element, wherein in the isolation wall portion, a thinner portionto break open earlier due to increases in gas pressure in the containing space to function as a safety valve is formed groove-like. A groove direction of the thinner portionis in the same direction as an orientation of the resin of the gasket, and an Izod impact value of the resin forming the gasket is in a range of 20 to 60 J/m (at a temperature of 23±2° C. and a relative humidity of 50±5%).