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:
Jul. 22, 2008

Filed:

Mar. 06, 2006
Applicants:

Earl Wayne Boone, Round Rock, TX (US);

William C. Johnson, Austin, TX (US);

Earl J. Devenport, San Jose, CA (US);

Inventors:

Earl Wayne Boone, Round Rock, TX (US);

William C. Johnson, Austin, TX (US);

Earl J. Devenport, San Jose, CA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 7/20 (2006.01); H05K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An improved air flow management has an air control device for blocking air from low impedance airflow pathways without high thermal components and directing the air flow initially at specific components with high thermal loading. Other components are cooled by the air as it passes from the high thermal loading component to exit from the unit. The air control device directs the air flow by locating and sizing apertures in the air control device based on the location and thermal load of the components on the printed circuit board. Accordingly, the unit can require less air flow through the unit and smaller or no heat sinks than conventional methods.


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