Variable capacitor

Claim 1

A VARIABLE CAPACITOR CONSTRUCTIOM COMPRISING IN COMBINATION: (A) A STATOR CAPACITOR ELECTRODE, (B) A ROTOR CAPACITOR ELECTRODE DISPOSED IN JUXTAPOSITION TO SAID STATOR ELECTRODE, (C) A THIN SHEET OF SOLID DIELECTRIC MATERIAL DISPOSED BETWEEN SAID ELECTRODES WITH EACH ELECTRODE CONTIGUOUS THERETO, (1) SAID ROTOR ELECTRODE BEING ROTATABLE RELATIVE TO SAID STATOR ELECTRODE TO EFFECT FOR THE ASSEMBLY OF SAID ELECTRODES AND THE DIELECTRIC SHEET A VALUE OF CAPACITY RANGING FROM A MINIMUM TO A MAXIMUM VALUE, (D) A LUBRICANT MATERIAL COVERING AT LEAST THE PORTION OF SAID DIELECTRIC SHEET CONTIGUOUS WITH SAID ELECTRODES, (1) SAID LUBRICANT MATERIAL BEING A LIQUID HAVING A VISCOSITY OF LESS THAN ABOUT 100 CENTISTOKES, AND HAVING A VALUE FOR TANGENT O OF LESS THAN ABOUT 0.01, (E) MEANS IN CONTACT WITH SAID ROTOR ELECTRODE FOR URGING THE ASSEMBLY OF ELECTRODES AND SAID DIELECTRIC SHEET INTO MORE INTIMATE CONTACT, (F) MEANS GIRDING SAID ROTOR ELECTRODE FOR PREVENTING THE ENTRY OF AIR BETWEEN SAID ROTOR ELECTRODE AND SAID DIELECTRIC SHEET, AND (G) AN AREA RECESSED INTO THE FACE OF SAID ROTOR ELECTRODE IN CONTACT WITH SAID DIELECTRIC SHEET, (1) SAID RECESSED AREA CONTAINING LUBRICANT MATERIAL AND HAVING A DEPTH OF SUFFICIENT MAGNITUDE THAT THE DISTANCE BETWEEN THE STATOR ELECTRODE AND THE BOTTOM OF SAID RECESSED AREA WILL RESULT IN A VERY LOW VALUE OF CAPACITY WITH SAID STATOR ELECTRODE, DIELECTRIC SHEET AND RECESSED AREA BEING ARRANGED IN JUXTAPOSITION.