Capacitor

Claim 1

A LIGHTWEIGHT CAPACITOR ADAPTED TO OPERATE AT RELATIVELY HIGH VOLTAGES AND AT TEMPERATURES UP TO 1000*F. AND HIGHER WITHOUT DETERIORATION OR BREAKDOWN, COMPRISING A SELF-SUPPORTING CERAMIC WAFER OF SUBSTANTIAL THICKNESS COMPOSED OF DENSE NONPOROUS ALUMINUM OXIDE, SAID WAFER BEING CHARACTERIZED BY A RELATIVELY HIGH AND UNIFORM DIELECTRIC STRENGTH AND A SUBSTANTIALLY NONVARYING DIELECTRIC CONSTANT OVER THE TEMPERATURE RANGE UP TO ABOUT 1000*F., METAL WAGER CONDUCTORS ON EACH SIDE OF SAID CERAMIC WAFER, SAID METAL WAFERS BEING SELECTED FROM THE GROUP OF PURE METALS CONSISTING OF GOLD, SILVER, METALS OF THE PLATINUM GROUP, AND ALLOYS OF THESE METALS WITH EACH OTHER, SAID A THIN LAYER OF GLASS FUSED TO EXTERIOR SURFACE PORTIONS OF SAID CERAMIC WAFER AND BONDING SAID CONDUCTORS THERETO, SAID GLASS COVERING SURFACE AND PERIPHERAL EDGE PORTIONS OF SAID CERAMIC WAFER AND FILLING VOID SPACES BETWEEN SAID WAFER AND ADJACENT CONDUCTORS, WHEREBY THE GLASS SERVES NOT ONLY TO BOND THE CERAMIC WAFER AND CONDUCTORS INTO AN INTEGRAL UNIT BUT ALSO TO INCREASE THE RESISTANCE OF THE LEAKAGE PATH AROUND THE CERAMIC WAFER.