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. 27, 2024

Filed:

May. 28, 2021
Applicant:

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

Inventors:

Madeline Marie Roemer, Los Altos, CA (US);

Mahesh Daisy, Folsom, CA (US);

Jerome Henry, Pittsboro, NC (US);

Assignee:

CISCO TECHNOLOGY, INC., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/367 (2006.01); H01L 23/373 (2006.01); H05K 1/02 (2006.01);
U.S. Cl.
CPC ...
H01L 23/3675 (2013.01); H01L 23/3735 (2013.01); H05K 1/0209 (2013.01); H05K 2201/066 (2013.01);
Abstract

An apparatus includes a printed circuit board (PCB), an integrated circuit (IC) component connected with a surface of the PCB, and a heat sink. The heat sink includes a base plate disposed directly over the IC component, and a plurality of cooling fins extending transversely from the base plate. The heat sink includes at least one component including a bimetallic material that distorts when heated above a threshold temperature so as to modify a flow of air directed toward and contacting the cooling fins or maintain contact between a surface of the IC component and a facing surface of the base plate.


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