Rca Inc.

Thermacore, Inc.

Robert F Keller

John H Rosenfeld

Sebastian W Kessler, Jr

A high permeability wick structure for heat pipes. A thin capillary liquid transport structure is encased within relatively thick sections of a plastic bonded aluminum powder wick. The capillary structure is formed of two layers of fine mesh screen separated only by small, randomly located, powdered metal granules. The capillary liquid transport structure can be built in numerous cross sectional configurations, including annular rings or spoke like radial sections.

High permeability heat pipe wick structure

A magnetron includes an evacuated envelope having therein a cathode assembly. An anode electrode surrounds the cathode assembly. The cathode assembly is formed of a helically wound filament having a quadrilateral cross-section. One of the surfaces of the quadrilateral cross-section filament is wider than the others. The wider surface of the filament faces the anode electrode. The quadrilateral cross-section thereby increasing the sag resistance of the filament.

Magnetron filament having a quadrilateral cross-section

A semiconductor wafer is sandwiched between the ends of two heat pipes. One end of each heat pipe is in electrical and thermal contact with the wafer. The heat pipes are fastened together so that the wafer is held in compression between the two heat pipes. The ends of the heat pipe, are reinforced from within the heat pipe so that the ends will not buckle due to the compression loading of the wafer.

Growing community of inventors

Lancaster, PA, United States of America

Robert F Keller