Volume correcting integrator for fluid meters

Claim 1

A VOLUME CORRECTING INTEGRATOR FOR FLUID METERS COMPRISING A VARIABLE RATIO INTEGRATING MECHANISM HAVING AN INPUT DIRECTLY PROPORTIONAL TO THE VOLUMETRIC FLOW OF THE FLOWING FLUID BEING METERED AT THE EXISTING PRESSURE AND TEMPERATURE THEREOF AND AN OUTPUT INDICATIVE OF SAID VOLUMETRIC FLOW CORRECTED TO A STANDARD BASE PRESSURE AND TEMPERATURE, A SEALED FLEXIBLE CONTAINER FOR CONFINING A SAMPLE OF FLUID OF THE SAME COMPOSITION AS THE FLOWING FLUID, SAID FLEXIBLE CONTAINER BEING FIXEDLY SUPPORTED AT ONE END AND HAVING ITS OTHER END FREE TO MOVE IN RESPONSE TO VARIATIONS IN THE VOLUME OF THE CONTAINED FLUID DUE TO VARIATIONS IN THE PRESSURE AND TEMPERATURE THEREOF, MEANS FORMING AN ENVIRONMENTAL CHAMBER IN WHICH SAID FLEXIBLE CONTAINER IS SUPPORTED, MEANS DEFINING AN OPENING IN SAID CHAMBER FOR NORMALLY ADMITTING SOME OF THE FLOWING FLUID TO THE INTERIOR OF SAID CHAMBER SO AS TO SUBJECT SAID FLEXIBLE CONTAINER TO A TEMPERATURE AND AN EXTERNAL PRESSURE SUBSTANTIALLY EQUAL TO THOSE OF THE FLOWING FLUID, MEANS CONNECTED TO THE FREE END OF SAID FLEXIBLE CONTAINER FOR VARYING THE RATIO BETWEEN THE INPUT AND THE OUTPUT OF SAID INTEGRATING MECHANISM, AND MEANS CONNECTED TO THE FREE END OF SAID FLEXIBLE CONTAINER FOR CLOSING SAID CHAMBER OPENING TO PREVENT ACCESS OF THE FLOWING FLUID TO SAID CHAMBER WHEN THE PRESSURE IN SAID CHAMBER FALLS BELOW A PREDETERMINED RANGE.