Gaged diaphragm pressure transducer

Claim 1

A GAGED DIAPHRAGM TRANSDUCER COMPRISING AN ELASTIC DIAPHRAGM HAVING OPPOSITELY-DISPOSED SURFACES AT LEAST ONE OF WHICH HAS A CONCAVE CURVATURE AND WHEREIN THE THICKNESSES OF THE DIAPHRAGM INCREASE PROGRESSIVELY FROM SUBSTANTIALLY THE MIDDLE TO THE OUTER PERIPHERY THEREOF, MEANS SUPPORTING SAID DIAPHRAGM ABOUT THE OUTER PERIPHERY THEREOF, MEANS FOR DEFLECTING SAID DIAPHRAGM RELATIVE TO SAID SUPPORTING MEANS, AND MEASUREMENT MEANS INCLUDING STRAIN GAGES CONNECTED TO SAID ONE OF SAID DIAPHRAGM SURFACES HAVING SAID CONCAVE CURVATURE AND DEVELOPING ELECTRICAL OUTPUT SIGNAL RESPONSIVE TO DEFLECTIONS NEAR THE CENTER AND OUTER PERIPHERY THEREOF, RESPECTIVELY SAID THICKNESSES OF SAID DIAPHRAGM AT THE MIDDLE AND OUTER PERIPHERY THEREOF BEING OF RELATIVE PROPORTIONS MAKING THE MAXIMUM CO-EXISTING RADIAL STRAINS IN TENSION AND COMPRESSION ON EACH SURFACE OF THE DEFLECTED DIAPHRAGM SUBSTANTIALLY EQUAL.