Patent ID: 8087452

Claim:
A cold plate cooling device, comprising: a plurality of patterned plates, each of said patterned plates having a first side, a second side, and a thickness between the first side and the second side; a channel pattern formed on the first side of each patterned plate, the channel pattern comprising a plurality of parallel channels, the channels of each plate being defined in part by walls extending from the first side to a depth less than the plate thickness such that the walls terminate short of the second side; the channel pattern further comprising a barrier extending for at least a portion of the length of each patterned plate at an angle to the plurality of parallel channels, the barrier having an upper surface coplanar with said first surface, the barrier located intermediate edges of each plate such that at least a portion of the channels terminates at the barrier; wherein the patterned plates are in a stack with the channel patterns of two plates abutting and the parallel channels of one plate arranged substantially crosswise with respect to the parallel channels of the other plate to provide a flow path for the coolant, and with the barrier of the one patterned plate arranged in abutment with the barrier of the other patterned plate to separate the flow path into at least two segments along at least a portion of the length of the flow path.