Volumetric measurement system
First Claim
1. A SYSTEM FOR MEASURING THE VOLUME OF A NON-COMPRESSIBLE MATERIAL WITHIN A CONFINED SPACE COMPRISING A REFERENCE CAVITY, AN ACOUSTIC FILTER CONNECTING SAID SPACE AND SAID CAVITY FOR EQUALIZING THE STATIC PRESSURES WITHIN SAID SPACE AND SAID CAVITY WHILE MAINTAINING ACOUSTIC SEPARATION THEREOF, A DRIVE TRANSDUCER HAVING A MOVABLE ELEMENT BETWEEN THE CAVITY AND THE SPACE, MEANS FOR ACTUATING THE DRIVE TRANSDUCER TO DISPLACE THE MOVABLE ELEMENT TO PRODUCE INCREMENTAL CHANGES IN DYNAMIC GAS PRESSURE BOTH WITHIN THE SPACE AND WITHIN THE GAS CAVITY, A PAIR OF PICKUP TRANSDUCERS FOR MEASURING BOTH INCREMENTAL PRESSURE CHANGES, AND MEANS FOR COMPARING THE INCREMENTAL PRESSURE CHANGES TO PROVIDE AN OUTPUT INDICATION OF THE VOLUME OF THE NON-COMPRESSIBLE MATERIAL IN THE SPACE.
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1 Claim
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1. A SYSTEM FOR MEASURING THE VOLUME OF A NON-COMPRESSIBLE MATERIAL WITHIN A CONFINED SPACE COMPRISING A REFERENCE CAVITY, AN ACOUSTIC FILTER CONNECTING SAID SPACE AND SAID CAVITY FOR EQUALIZING THE STATIC PRESSURES WITHIN SAID SPACE AND SAID CAVITY WHILE MAINTAINING ACOUSTIC SEPARATION THEREOF, A DRIVE TRANSDUCER HAVING A MOVABLE ELEMENT BETWEEN THE CAVITY AND THE SPACE, MEANS FOR ACTUATING THE DRIVE TRANSDUCER TO DISPLACE THE MOVABLE ELEMENT TO PRODUCE INCREMENTAL CHANGES IN DYNAMIC GAS PRESSURE BOTH WITHIN THE SPACE AND WITHIN THE GAS CAVITY, A PAIR OF PICKUP TRANSDUCERS FOR MEASURING BOTH INCREMENTAL PRESSURE CHANGES, AND MEANS FOR COMPARING THE INCREMENTAL PRESSURE CHANGES TO PROVIDE AN OUTPUT INDICATION OF THE VOLUME OF THE NON-COMPRESSIBLE MATERIAL IN THE SPACE.
Specification
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Current AssigneeAndrew V. Haeff
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Original AssigneeAndrew V. Haeff
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InventorsHaeff, Andrew V.
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Application NumberUS04/230,866Time in Patent Office1,232 DaysField of SearchUS Class Current73/149CPC Class CodesG01F 23/296 Acoustic waves
