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:
Aug. 07, 2007

Filed:

Jun. 15, 2004
Applicants:

Hiroshi Chiba, Tokyo, JP;

Tetsuro Ogushi, Tokyo, JP;

Akira Yamada, Tokyo, JP;

Hiroshi Yamabuchi, Tokyo, JP;

Inventors:

Hiroshi Chiba, Tokyo, JP;

Tetsuro Ogushi, Tokyo, JP;

Akira Yamada, Tokyo, JP;

Hiroshi Yamabuchi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A low-cost heat sink easy to assemble which is designed to be mounted on a power semiconductor module () through the medium of cooling water includes a base member (), a heat sink body () superposed on the base member () to form in cooperation with the base member () a passage through which the coolant flows, and a bellows-like flow straightening plate () disposed between the power semiconductor module () and the base member () in physical contact with the power semiconductor module () on one hand and with the base member () on the other hand. The flow straightening plate () partitions the passage into a plurality of flow straightening channels (A,B).


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