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. 14, 2001

Filed:

Feb. 29, 2000
Applicant:
Inventor:

Vernon P. Bollesen, Milpitas, CA (US);

Assignee:

Sun Microsystems, Inc., Palo Alto, CA (US);

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

A heat sink structure includes first and second add-on heat sinks mounted to a primary heat sink. The add-on heat sinks are thermally connected to the primary heat sink such that the effective heat transfer surface area for dissipating heat to the ambient environment is increased compared to the surface area of the primary heat sink alone. Increasing the effective heat transfer surface area enhances heat transfer from the primary heat sink. The add-on heat sinks also restrict air from flowing between the primary heat sink and a cabinet of the computer system. In this manner, the add-on heat sinks force air to flow between the fins of the primary heat sink, thus further enhancing heat transfer from the primary heat sink.


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