US3217250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductivity cell with thermostatically controlled heater
Assignee: EPPI PRECISION PRODUCTS Inc
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Filing: 1962-03-14
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Granted: 1965-11-09
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Milton H Goemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:40
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A DEVICE FOR MEASURING THE DEGRADATION OF LIQUIDS BY MEASURING THEIR ELECTRICAL CONDUCTIVITY, INCLUDING A TANK HAVING A HEAT TRANSFER AGENT THEREIN, A CIRCUMFERENTIALLY EXTENDING HEATER ELEMENT ABOUT SAID TANK, INSULATION SURROND SAID HEATER ELEMENT, AN AGITATOR IN SAID TANK AND MEANS FOR DRIVING IT TO AGITATE THE HEAT TRANSFER AGENT, A THEREMOSTAT EXTENDING INTO SAID HEAT TRANSFER AGENT AND EFFECTIVE CONTROL THE HEATER, A COVER ON SAID TANK HAVING A DEFINED OPENING, A CONTAINER HAVING A PREDETERMINED GEOMETRIC CONFIGURATION FOR HOLDING A CONTROLLED VOLUME OF THE LIQUID TO BE TESTED, SAID CONTAINER BEING MOUNTED IN SAID DEFINED OPENING AND EXTENDING INTO THE HEAT TRANSFER AGENT, A PROBE FIXED TO SAID CONTAINER AND EXTENDING THEREING INTO CONTACT WITH THE LIQUID TO BE TESTED, MEANS FOR APPLYING A CONTROLLED VOLTAGE BETWEEN THE PROBE AND THE CONTAINER, AND MEANS FOR MEASURING THE CURRENT FLOW THROUGH SAID LIQUID.
Claim 2
Independent Claim
145 words
A DEVICE FOR MEASURING THE DEGRADATION OF LIQUIDS BY MEASURING THEIR ELECTRICAL CONDUCTIVITY, INCLUDING A TANK HAVING A HEAT TRANSFER AGENT THEREIN, A CIRCUMFERENTIALLY EXTENDING HEATER ELEMENT ABOUT SAID TANK, INSULATION SURROND SAID HEATER ELEMENT, AN AGITATOR IN SAID TANK AND MEANS FOR DRIVING IT TO AGITATE THE HEAT TRANSFER AGENT, A THEREMOSTAT EXTENDING INTO SAID HEAT TRANSFER AGENT AND EFFECTIVE CONTROL THE HEATER, A COVER ON SAID TANK HAVING A DEFINED OPENING, A CONTAINER HAVING A PREDETERMINED GEOMETRIC CONFIGURATION FOR HOLDING A CONTROLLED VOLUME OF THE LIQUID TO BE TESTED, SAID CONTAINER BEING MOUNTED IN SAID DEFINED OPENING AND EXTENDING INTO THE HEAT TRANSFER AGENT, A PROBE FIXED TO SAID CONTAINER AND EXTENDING THEREING INTO CONTACT WITH THE LIQUID TO BE TESTED, MEANS FOR APPLYING A CONTROLLED VOLTAGE BETWEEN THE PROBE AND THE CONTAINER, AND MEANS FOR MEASURING THE CURRENT FLOW THROUGH SAID LIQUID.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |