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. 20, 2011
Filed:
Jan. 23, 2007
Tomotaka Ishida, Tokyo, JP;
Mitsuru Yamamoto, Tokyo, JP;
Sakae Kitajo, Tokyo, JP;
Kazuhiro Kumakura, Oyama, JP;
Tomotaka Ishida, Tokyo, JP;
Mitsuru Yamamoto, Tokyo, JP;
Sakae Kitajo, Tokyo, JP;
Kazuhiro Kumakura, Oyama, JP;
NEC Corporation, Tokyo, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A liquid-cooled heat radiatorincludes a heat radiation basehaving a cooling-liquid channel, and an expansion tankprovided on the heat radiation base. The expansion tankhas a tank bodyhaving an expanded portion, which expands upward and opens downward, and a bottom platejoined to the lower end of the tank bodyto thereby close a bottom opening of the expanded portion. A through-holeis formed in the top wall of the expanded portionof the tank bodyand serves as a communication section for establishing communication between the interior and the exterior of the cooling-liquid channel. A hydrogen-permeable memberis fixedly fitted into the through-holeso as to stop the through-hole. The hydrogen-permeable membersatisfies the relation B≧50 A, where A and B are water-vapor permeability and hydrogen permeability, respectively, of the hydrogen-permeable member. The hydrogen-permeable memberis formed from a single material selected from the group consisting of ethylene-propylene rubber, butyl rubber, fluorine-containing rubber, nitrile-butadiene rubber, and silicone rubber. The liquid-cooled heat radiatorcan be free from an increase in pressure in the cooling-liquid channel