Pressure gaging systems of apparatus
First Claim
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1. A PRESSURE-GAGING SYSTEM COMPRISING IN COMBINATION:
- (A) A DUAL-CHAMBER GAGE CELL HAVING A RIM-ANCHORED THIN FLEXIBLE CONDUCTIVE DIAPHRAGM POSITIONED BETWEEN AND SEPARATING FROM EACH OTHER A SAMPLE CHAMBER POSITIONED BETWEEN THE DIAPHRAGM AND A CONDUCTIVE SENSING-PLATE AND AN OPPOSITE REFERENCE CHAMBER POSITIONED BETWEEN THE DIAPHRAGM AND A CONDUCTIVE ATTRACTION PLATE, WITH THE DIAPHRAGM AND BOTH PLATES ELECTRICALLY INSULATED FROM EACH OTHER, (B) CONDUIT MEANS RESPECTIVEL CONNECTING THE SAMPLE AND REFERENCE CHAMBERS TO SEPARATE SOURCE OF SAMPLE AND REFERENCE PRESSURES TO BE COMPARED;
(C) INDICATING CIRCUIT MEANS RESPONSIVE TO CHANGES IN THE ELECTRICAL RELATIONSHIP BETWEEN THE DIAPHRAGM AND THE SENSING PLATE CAUSED BY PRESSURE-DIFFERENTIAL-ACTUATED FLEXING DEFLECTION OF THE DIAPHRAGM, (D) AND ADJUSTABLE MEANS SUPPLYING A VARIABLE PRESELECTED ATTRACTION VOLTAGE TO THE ATTRACTION PLATE TO COUNTERACT THE FLEXING DEFLECTION OF THE DIAPHRAGM.
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1 Claim
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1. A PRESSURE-GAGING SYSTEM COMPRISING IN COMBINATION:
- (A) A DUAL-CHAMBER GAGE CELL HAVING A RIM-ANCHORED THIN FLEXIBLE CONDUCTIVE DIAPHRAGM POSITIONED BETWEEN AND SEPARATING FROM EACH OTHER A SAMPLE CHAMBER POSITIONED BETWEEN THE DIAPHRAGM AND A CONDUCTIVE SENSING-PLATE AND AN OPPOSITE REFERENCE CHAMBER POSITIONED BETWEEN THE DIAPHRAGM AND A CONDUCTIVE ATTRACTION PLATE, WITH THE DIAPHRAGM AND BOTH PLATES ELECTRICALLY INSULATED FROM EACH OTHER, (B) CONDUIT MEANS RESPECTIVEL CONNECTING THE SAMPLE AND REFERENCE CHAMBERS TO SEPARATE SOURCE OF SAMPLE AND REFERENCE PRESSURES TO BE COMPARED;
(C) INDICATING CIRCUIT MEANS RESPONSIVE TO CHANGES IN THE ELECTRICAL RELATIONSHIP BETWEEN THE DIAPHRAGM AND THE SENSING PLATE CAUSED BY PRESSURE-DIFFERENTIAL-ACTUATED FLEXING DEFLECTION OF THE DIAPHRAGM, (D) AND ADJUSTABLE MEANS SUPPLYING A VARIABLE PRESELECTED ATTRACTION VOLTAGE TO THE ATTRACTION PLATE TO COUNTERACT THE FLEXING DEFLECTION OF THE DIAPHRAGM.
- (A) A DUAL-CHAMBER GAGE CELL HAVING A RIM-ANCHORED THIN FLEXIBLE CONDUCTIVE DIAPHRAGM POSITIONED BETWEEN AND SEPARATING FROM EACH OTHER A SAMPLE CHAMBER POSITIONED BETWEEN THE DIAPHRAGM AND A CONDUCTIVE SENSING-PLATE AND AN OPPOSITE REFERENCE CHAMBER POSITIONED BETWEEN THE DIAPHRAGM AND A CONDUCTIVE ATTRACTION PLATE, WITH THE DIAPHRAGM AND BOTH PLATES ELECTRICALLY INSULATED FROM EACH OTHER, (B) CONDUIT MEANS RESPECTIVEL CONNECTING THE SAMPLE AND REFERENCE CHAMBERS TO SEPARATE SOURCE OF SAMPLE AND REFERENCE PRESSURES TO BE COMPARED;
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Current AssigneeAugustus H. Fiske
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Original AssigneeAugustus H. Fiske
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InventorsFiske, Augustus H.
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Application NumberUS04/503,331Time in Patent Office766 DaysField of SearchUS Class Current73/701CPC Class CodesG01L 13/025 using diaphragmsG01L 9/0072 using variations in capacit...G01L 9/125 with temperature compensati...
