Trimmer capacitor with direct travel mechanism

Claim 1

IN AN ADJUSTABLE CAPACITOR HAVING A FIRST ELECTRODE, AND A SECOND MOVABLE ELECTRODE AND A DIELECTRIC MEMBER INTERPOSED THEREBETWEEN; SAID SECOND ELECTRODE COMPRISING A PISTON MOVABLE WITH RESPECT TO THE OTHER OF SAID ELECTRODES, AND MECHANISM CONNECTED TO SAID PISTON FOR MOVING SAID PISTON; SAID MECHANISM COMPRISING A GUIDE MEANS, A ROTATABLE SCREW HAVING A POSITION AXIALLY FIXED WITH RESPECT TO SAID FIRST ELECTRODE AND BEING ROTATABLE ABOUT THE AXIS THEREOF, AND A SCREW RECEIVING MEMBER INTEGRALLY CONNECTED TO SAID PISTON AND THREADABLY RECEIVING SAID ROTATABLE SCREW; SAID SCREW RECEIVING MEMBER HAVING A RADIALLY OUTWARDLY EXTENDING SECTION; SAID RADIALLY EXTENDING SECTION BEING RECEIVED BY SAID GUIDE MEANS; SAID GUIDE MEANS PERMITTING TRANSLATION MOTION OF SAID SCREW RECEIVING MEMBER AND PREVENTING ROTATY MOTION OF SAID SCREW RECEIVING MEMBER; SAID GUIDE MEANS COMPRISING A SLOTTED BUSHING; SAID PISTON BEING TELESCOPED OVER SAID SLOTTED BUSHING, SAID SLOTTED BUSHING HAVING A LONGITUDINAL SLOT THEREIN EXTENDING THROUGH THE WALL OF SAID BUSHING AND EXTENDING TO AN END OF SAID SLOTTED BUSHING; SAID LONGITUDINAL SLOT RECEIVING SAID RADIALLY EXTENDING SECTION OF SAID SCREW RECEIVING MEMBER.