Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2006-03-28
2006-03-28
Chervinsky, Boris (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S697000, C361S703000, C257S722000, C165S080300, C165S185000, C174S016300
Reexamination Certificate
active
07019969
ABSTRACT:
A heat sink having air flow directors on each of multiple fins attached to a heat sink base. The air flow directors direct air flow from dual fans towards a geometric center of the heat sink base, which is above the hottest part of the integrated circuit (IC) package being cooled by the heat sink. In one embodiment, a protrusion in the geometric center of the heat sink base provides additional cooling from air impingement, and also directs air towards the upper portions of the fins. The use of dual fans allows the fans to run at a lower speed than a single fan, thus reducing an overall fan acoustic level. Furthermore, the dual fans allow for a backup fan if one of the fans should fail.
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Foster, Sr. Jimmy Grant
June Michael Sean
Makley Albert Vincent
Matteson Jason Aaron
Chervinsky Boris
Dillon & Yudell LLP
International Business Machines - Corporation
McKinley Martin J.
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