Patent ID: 7278471

Claim:
A heat sink assembly for removing heat from an electronic device, said assembly comprising; a body including a bottom surface having a bottom width and a top surface having a top width spaced therefrom, wherein said bottom width is greater than said top width, and defining a plurality of channels extending through said body in parallel relationship to said bottom surface and aligned in a plurality of layers stacked vertically between said bottom surface and said top surface and with each of said plurality of layers including at least one of said plurality of channels, a first of said layers adjacent said bottom surface and a second of said layers adjacent said top surface, said first layer including a thermal capacity for transmitting heat to a fluid flowing through said plurality of channels and said second layer including a thermal capacity less than said thermal capacity of said first layer for transferring a lesser quantity of heat to the fluid than said first layer, thereby providing a substantially constant heat flux from said bottom surface to said top surface.