Electrical capacitor with a boron nitride dielectric

Claim 1

A CAPACITOR CAPABLE OF WITHSTANDING ADVERSE ENVIRONMENTAL CONDITIONS, SAID CAPACITOR COMPRISING: A CYLINDRICAL INSULATING TUBE; A PLURALITY OF CONDUCTIVE DISC ELECTRODES STACKED IN LONGITUDINAL SUCCESSION WITHIN SAID TUBE; A PLURALITY OF LAYERS OF INSULATING MATERIAL IN SAID STACK RESPECTIVELY INTERLEAVED BETWEEN AND SEPARATING SUCCESSIVE ONES OF SAID ELECTRODES FROM EACH OTHER, SAID INSULATING MATERIAL COMPRISING A BONDED MIXTURE OF POWDERED BORON NITRODE AND A POWDERED BINDER COMPRISING MAGNESIUM ORTHOBORATE; A PAIR OF CONDUCTIVE CYLINDRICAL BARS LONGITUDINALLY EXTENDING WITHIN SAID TUBE AND RESPECTIVELY PASSING THROUGH ALTERNATE ONES OF SAID ELECTRODES SO AS TO MAKE PERIPHERAL ELECTRICAL CONTACT THEREWITH, THE PERIPHERY OF EACH OF SAID BARS BEING TRANSVERSELY SPACED FROM THE ELECTRODES IN CONTACT WITH THE OTHER BAR; AND A PAIR OF SEALS AFFIXED AT OPPOSITE ENDS OF SAID TUBE FOR RETAINING SAID STACK OF ELECTRODES AND LAYERS OF INSULATING MATERIAL THEREIN, EACH OF SAID BARS LONGITUDINALLY EXTENDING THROUGH AT LEAST ONE OF SAID SEALS SO AS TO PROVIDE TOGETHER A PAIR OF CONNECTION TERMINALS FOR SAID CAPACITOR.