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. 22, 2003
Filed:
Mar. 12, 2002
Hiroshi Kubota, Tokyo, JP;
Hiroshi Kiire, Tokyo, JP;
Kiyoshi Nagatsuka, Tokyo, JP;
Hiroshi Ootani, Tokyo, JP;
Junya Sakurai, Tokyo, JP;
Shintarou Fujioka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An electric system has exothermic components housed in a case; the case is formed with ventilation holes, and a fan forcibly evacuates the hot air from the inner space through the ventilation holes for removing heat from the exothermic components; foamable pain is spread on the surface near the ventilation hole, and a fuse element is exposed to the air passage; when a fire breaks out inside the case, the paint foams for closing the ventilation hole, and the fuse element stops the fans, whereby the fire is extinguished without being spread to the outside the case.