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First Claim
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1. IN A TRANSDUCER:
- A PIEZOELECTRIC ELEMENT MOUNTED WITHIN A CASE, A CAPACITOR IN THE CASE, THE PIEZOELECTRIC ELEMENT AND THE CAPACITOR BEING ELECTRICALLY CONNECTED TO TERMINALS ADAPTED FOR CONNECTION TO AN EXTERNAL CIRCUIT, THE TEMPERATURE COEFFICIENT OF THE CAPACITANCE OF THE CAPACITOR BEING LOW COMPARED WITH THE TEMPERATURE COEFFICIENT OF THE VOLTAGE SENSITIVITY OF THE PIEZOELECTRIC ELEMENT WHEREBY THE TRANSFER RATIO OF THE TRANSDUCER VARIES WITH TEMPERATURE LESS THAN IF THE CAPACITOR WERE OMITTED.
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1 Claim
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1. IN A TRANSDUCER:
- A PIEZOELECTRIC ELEMENT MOUNTED WITHIN A CASE, A CAPACITOR IN THE CASE, THE PIEZOELECTRIC ELEMENT AND THE CAPACITOR BEING ELECTRICALLY CONNECTED TO TERMINALS ADAPTED FOR CONNECTION TO AN EXTERNAL CIRCUIT, THE TEMPERATURE COEFFICIENT OF THE CAPACITANCE OF THE CAPACITOR BEING LOW COMPARED WITH THE TEMPERATURE COEFFICIENT OF THE VOLTAGE SENSITIVITY OF THE PIEZOELECTRIC ELEMENT WHEREBY THE TRANSFER RATIO OF THE TRANSDUCER VARIES WITH TEMPERATURE LESS THAN IF THE CAPACITOR WERE OMITTED.
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Current AssigneeBernard A. Shoor
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Original AssigneeBernard A. Shoor
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InventorsShoor, Bernard A.
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Application NumberUS04/156,312Time in Patent Office1,271 DaysField of SearchUS Class Current310/315CPC Class CodesG01H 11/08 using piezoelectric devicesG01L 1/16 using properties of piezoel...
