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:
May. 25, 2010

Filed:

Mar. 31, 2006
Applicants:

Takayuki Atarashi, Tsuchiura, JP;

Masato Nakanishi, Tokyo, JP;

Inventors:

Takayuki Atarashi, Tsuchiura, JP;

Masato Nakanishi, Tokyo, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A cooling jacket for cooling a heat-generating element through transmitting heat-generation into a coolant flowing within an inside of the cooling jacket, which is mounted within an electronic apparatus, and includes a base portion, and a cover portion. The base portion includes a heat-transfer surface in proximity to a surface of the heat-generating element, and a plurality of wall portions. Each wall portion is defined to extend into a direction perpendicular to the heat-transfer surface, thereby defining flow passages for the fluid coolant between the wall portions. The cover portion is attached on the base portion surrounding a periphery of the base portion, thereby defining a passage for guiding the fluid coolant into the base portion. The base portion builds up the sector-shaped flow passages and a summit portion at a central portion of the base, and has a configuration that is thermally isotropic to the heat-generating element.


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