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.

Date of Patent:
Oct. 19, 2004

Filed:

Jul. 18, 2003
Applicant:
Inventors:

Yoshihiro Kondo, Tsuchiura, JP;

Shigeo Ohashi, Tsuchiura, JP;

Rintaro Minamitani, Tsukuba, JP;

Takashi Naganawa, Chiyoda, JP;

Yuji Yoshitomi, Chiyoda, JP;

Masato Nakanishi, Tokyo, JP;

Yasuhiko Sasaki, Chiyoda, JP;

Tsuyoshi Nakagawa, Hadano, JP;

Osamu Suzuki, Chiyoda, JP;

Shinji Matsushita, Chigasaki, JP;

Yasunori Yamada, Hadano, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 7/20 ;
U.S. Cl.
CPC ...
H05K 7/20 ;
Abstract

A plurality of electronic apparatuses, each apparatus having a closed loop cooling system, are installed in a cabinet having another closed loop fluid cooling system. Each of the closed loop fluid cooling systems includes a heat receiver and a pump. A projection is mounted on the electronic apparatus and a switching valve is arranged on the cabinet to stop or start circulation of a cooling fluid.


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