Miniature variable capacitor

Claim 1

A VARIABLE CAPACITOR COMPRISING IN COMBINATION, A DISC ROTOR OF DIELECTRIC MATERIAL OF GENERALLY CIRCULAR FORM AND HAVING FIRST AND SECOND OPPOSITELY FACING SURFACES INCLUDING A GENERALLY ARCUATE ELECTRODE CONFINED TO A GIVEN ANGULAR AREA ON SAID FIRST SURFACE, SAID ELECTRODE HAVING AN APPRECIABLE RADIAL EXTEND AND RADIALLY EXTENDING OPENINGS THROUGH SAID ROTOR ADJACENT TO THE RESPECTIVE ENDS THEREOF IN AREAS OF SAID ROTOR WHICH ARE FREE OF SAID ELECTRODE, SAID OPENINGS EXTENDING RADIALLY SUBSTANTIALLY THROUGHOUT THE FULL RADIAL EXTENT OF SAID ELECTRODE, A STATOR INCLUDING AN ELECTRODE CONFORMING GENERALLY TO THE ARCUATE ELECTRODE OF THE ROTOR, MEANS SUPPORTING SAID ROTOR IN GENERALLY PARALLEL RELATION TO AND FOR ROTATION RELATIVE TO SAID STATOR TO MOVE SAID ROTOR ELECTRODE INTO AND OUT OF AXIAL ALIGNMENT WITH SAID STATOR ELECTRODE FOR ADJUSTMENT OF SAID CAPACITOR BETWEEN MAXIMUM AND MINIMUM CAPACITANCE SETTINGS, AND FOR POSITIONING SAID ELECTRODES WHEN OUT OF OVERLAPPING RELATION SO AS TO LIE ON OPPOSITE SIDES OF SAID OPENINGS, THUS TO COOPERATE IN ESTABLISHING THE MINIMUM CAPACITANCE FOR SAID VARIABLE CAPACITOR, AND A RESILIENT MEMBER ENGAGING SAID FIRST SURFACE OF SAID ROTOR TO MAINTAIN OPERATIVE RELATIN BETWEEN SAID SECOND ROTOR SURFACE AND SAID STATOR DURING ROTOTION.