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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.:

US 4739444 B1

PDFFull Text
Date of Patent:
Apr. 19, 1988

Filed:

Mar. 03, 1986

Device for adjusting pressure loss of cooling air for an assembly of

Applicant:
Inventors:

Shizuo Zushi, Hadano, JP;

Tetsuo Ogata, Machida, JP;

Mitsuo Miyamoto, Hadano, JP;

Tsutomu Imai, Hadano, JP;

Fumiyuki Kobayashi, Sagamihara, JP;

Assignees:

Hitachi, Ltd., Tokyo, JP;

Hitachi Micro Eng. Ltd., Tokyo, JP;

Attorney:

Antonelli, Terry & Wands

Primary Examiner:

A D Pellinen

Assistant Examiner:

Gregory D Thompson

Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361383 ; 361384 ;
Abstract

In a cooling structure for electronic apparatus in which cards consisting of electronic components mounted on circuit boards are arranged in parallel on a motherboard. A pressure adjustment device with holes is arranged in a cooling air flow passage of each card. The area of the holes is selected in relation to the pressure loss characteristics of the related card based upon average air-flow sectional area.

Find Patent Forward Citations

Zushi, Shizuo. (1988). Device for adjusting pressure loss of cooling air for an assembly of (U.S. Patent No. 4739444). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4739444

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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