Patent ID: 6668910
Filing Date: 2003-12-30
Classification: H01L

Abstract:
A heat sink for cooling electrical or electronic devices, said heat sink comprising:a base plate having a top surface and having a bottom surface for attaching to the electronic device; at least two vertical plates affixed to and extending substantially perpendicular from said top surface in a spaced apart manner, said at least two vertical plates parallel one to the other; and a secondary fin affixed to and extending between an upper portion of said at least two vertical plates, said secondary fin having a top convoluted edge and a bottom convoluted edge and oriented such that said bottom convoluted edge faces said top surface, said secondary fin further including a plurality of individual fins formed in a convoluted accordion-like manner and defining a plurality of secondary fin passageways between adjacent ones of said individual fins, each said secondary fin passageway extending from said top convoluted edge to said bottom convoluted edge, and wherein said secondary fin is arranged in an arcuate manner such that said top convoluted edge is concave with respect to a top edge of said vertical plates and a bottom edge is convex with respect to said top surface of said base plate.