Pressure transducer

Claim 1

A CAPACITIVE TYPE PRESSURE TRANSDUCER COMPRISING A PLURALITY OF LAYERS OF THIN SHEET MATERIAL, SAID LAYERS INCLUDING A BASE STRIP OF DIELECTRIC MATERIAL, A MAIN ELECTRODE ON TOP OF SAID BASE STRIP, SAID MAIN ELECTRODE HAVING A BOTTOM SURFACE FIXED RELATIVE TO THE TOP SURFACE OF SAID BASE STRIP AND HAVING A ROUGH TOP SURFACE, AND AN UPPER FLEXIBLE STRIP OF DIELECTRIC MATERIAL HAVING ITS BOTTOM SURFACE FREELY ENGAGING AT LEAST A PART OF SAID ROUGH TOP SURFACE OF SAID MAIN ELECTRODE, SAID BASE STRIP OF DIELECTRIC MATERIAL BEING FLEXIBLE SO THAT SAID TRANSDUCER APART FROM THE AREA OF SAID MAIN ELECTRODE IS CAPABLE OF CONFORMING TO VARIOUS DIFFERENT CURVED SURFACES TO WHICH IT MAY BE ATTACHED, SAID MAIN ELECTRODE BEING OF SUCH A SMALL MAXIMUM DIMENSION THAT IF SAID ELECTRODE DOES NOT DEFORM AS SAID TRANSDUCER IS APPLIED TO A CURVED SURFACE THE MAXIMUM DIFFERENCE IN THE SPACING OF ANY TWO POINTS THEREOF FROM SAID CURVED SURFACE WILL BE OF THE SAME MAGNITUDE AS THE THICKNESS OF SAID VARIOUS LAYERS, AND SAID UPPER DIELECTRIC STRIP BEING MADE FROM A PLASTIC HAVING A THICKNESS OF NO MORE THAN ONE THOUSANDTH OF AN INCH.