Les Nemes

53218884, Jun 21, 1994

May 5, 1992

7/878595

Les E. Nemes - Buena Park CA

Rockwell International Corporation - Seal Beach CA

B23P 1526

29890054

A plurality of heat sinks assembled to form a rack in a lightweight box accommodate printed circuit cards between the heat sinks and circulate cooling oil through the heat sinks to drain the test heat from the boards quickly. Each heat sink includes a porous metal foam core configured in zigzag shape to provide a tortuous path for the fluid flow which extends into lateral fins comprising the side plates of the metal foam for receiving the cards or ground plates therefore. These plates are clamped against the fins for close contact to the cooling fluid thereby shortening the heat flow path. Brazed on aluminum top and bottom cover plates make a fluid tight connection with the porous metal. The brazed on top and bottom plates are also configured in the zigzag pattern of the foam. Lightweight thin aluminum feelers or plates conform to the zigzag sides of the foam and are clamped there against by side covers so that the feelers melt in a brazing process for sealing the side covers in fluid tight core conforming relationship with the foam metal core.

52259641, Jul 6, 1993

Oct 31, 1991

7/785632

Les E. Nemes - Buena Park CA

Rockwell International Corporation - Seal Beach CA

H05K 720

361386

A plurality of heat sinks assembled to form a rack in a lightweight housing accommodate printed circuit cards between the heat sinks and circulate cooling oil through the heat sinks to drain the test heat from the boards quickly. Each heat sink uses a porous metal foamed core, configured in zigzag shape, to provide a tortuous path for the fluid flow which extends into lateral fins comprising the side plates of the porous metal foam for receiving the cards or ground plates therefore. These plates are clamped against the fins for close contact to the cooling fluid thereby shortening the heat flow path. Brazed on aluminum top and bottom cover plates make a fluid tight connection with the porous foamed metal. The brazed on top and bottom plates are also configured in the zigzag pattern of the porous foamed metal. Lightweight thin aluminum feelers or plates conform to the zigzag sides of the porous foamed metal and are clamped thereagainst by side covers so that the feelers melt in a brazing process for sealing the side covers in fluid tight core conforming relationship with the porous foamed metal core.