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:
Apr. 08, 2003

Filed:

Oct. 04, 2000
Applicant:
Inventors:

Kaoru Sato, Kumamoto, JP;

Yasuhiro Fujiwara, Fukuoka, JP;

Shinobu Kamizuru, Fukuoka, JP;

Sumio Tate, Fukuoka, JP;

Kazuhiko Sugimoto, Fukuoka, JP;

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

The cooling element of the present invention comprises a base section in contact with a heat producing element, and a heat dissipation section integrally formed with the base section. The cooling element of the present invention is constructed such that a ratio of T (a thickness of the base section) to L (a reference length, namely, a shortest width or an external diameter of the base section disposed right above the heat producing element) is within a range of not less than 0.14 and not more than 0.24. The cooling element of the present invention comprises a base section in contact with a heat producing element and a heat dissipation element integrally formed with the base section. The cooling element of the present invention is constructed such that a ratio of d (a length of the base section at around the center) to L2 (a longest length or an external diameter of said base section) is not less than 0.5.


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