Patent US3290588A successfully refreshed from Google Patents.
US3290588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric measuring system including phase inverting means
Assignee: Industrial Nucleonics Corp
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Filing: 1963-03-27
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Granted: 1966-12-06
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Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 Norwich Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01R; G01R27/00; G01R27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
A SYSTEM FOR DETERMINING A PROPERTY OF A DIELECTRIC MATERIAL COMPRISING: A MEASURING PROBE HAVING FIRST AND SECOND SPACED ELECTRODES FOR COUPLING SAID PROBE TO SAID MATERIAL, SIGNAL GENERATING MEANS FOR GENERATING A FIRST SIGNAL AT A FIRST FREQUENCY AND A SECOND SIGNAL AT A SECOND SUBSTANTIALLY DIFFERENT FREQUENCY, MEANS CONNECTED TO SAID SIGNAL GENERATING MEANS FOR COUPLING SAID FIRST AND SECOND SIGNALS TO SAID FIRST ELECTRODE, A BALANCING IMPEDANCE CONNECTED TO SAID SECOND ELECTRODE, PHASE INVERTING AMPLIFIER MEANS HAVING ITS INPUT CONNECTED TO RECEIVE THE SIGNALS COUPLED TO SAID FIRST ELECTRODE FOR DEVELOPING THIRD AND FOURTH SIGNALS AT SAID RESPECTIVE FIRST AND SECOND FREQUENCIES AND SUBSTANTIALLY 180* OUT OF PHASE WITH SAID RESPECTIVE FIRST AND SECOND SIGNALS ON SAID FIRST ELECTRODE, MEANS CONNECTED TO SAID PHASE INVERTING MEANS FOR APPLYING SAID THIRD AND FOURTH SIGNALS THROUGH SAID BALANCING IMPEDANCE TO SAID SECOND ELECTRODE TO BALANCE SAID FIRST AND SECOND SIGNALS PASSING THROUGH SAID MEASURING PROBE SO THAT THERE IS NO NET SIGNAL DEVELOPED AT SAID SECOND ELECTRODE AT EITHER OF SAID FIRST AND SECOND FREQUENCIES IN THE ABSENCE OF SAID MATERIAL AT SAID PROBE, AND OUTPUT MEANS CONNECTED TO SAID SECOND ELECTRODE FOR MEASURING A FUNCTION OF THE SIGNALS DEVELOPED THEREAT AT BOTH OF SAID FREQUENCIES WITH SAID MATERIAL AT SAID PROBE AS AN INDICATION OF SAID PROPERTY OF SAID ELECTRIC MATERIAL.
Claim 2
Independent Claim
223 words
A SYSTEM FOR DETERMINING A PROPERTY OF A DIELECTRIC MATERIAL COMPRISING: A MEASURING PROBE HAVING FIRST AND SECOND SPACED ELECTRODES FOR COUPLING SAID PROBE TO SAID MATERIAL, SIGNAL GENERATING MEANS FOR GENERATING A FIRST SIGNAL AT A FIRST FREQUENCY AND A SECOND SIGNAL AT A SECOND SUBSTANTIALLY DIFFERENT FREQUENCY, MEANS CONNECTED TO SAID SIGNAL GENERATING MEANS FOR COUPLING SAID FIRST AND SECOND SIGNALS TO SAID FIRST ELECTRODE, A BALANCING IMPEDANCE CONNECTED TO SAID SECOND ELECTRODE, PHASE INVERTING AMPLIFIER MEANS HAVING ITS INPUT CONNECTED TO RECEIVE THE SIGNALS COUPLED TO SAID FIRST ELECTRODE FOR DEVELOPING THIRD AND FOURTH SIGNALS AT SAID RESPECTIVE FIRST AND SECOND FREQUENCIES AND SUBSTANTIALLY 180* OUT OF PHASE WITH SAID RESPECTIVE FIRST AND SECOND SIGNALS ON SAID FIRST ELECTRODE, MEANS CONNECTED TO SAID PHASE INVERTING MEANS FOR APPLYING SAID THIRD AND FOURTH SIGNALS THROUGH SAID BALANCING IMPEDANCE TO SAID SECOND ELECTRODE TO BALANCE SAID FIRST AND SECOND SIGNALS PASSING THROUGH SAID MEASURING PROBE SO THAT THERE IS NO NET SIGNAL DEVELOPED AT SAID SECOND ELECTRODE AT EITHER OF SAID FIRST AND SECOND FREQUENCIES IN THE ABSENCE OF SAID MATERIAL AT SAID PROBE, AND OUTPUT MEANS CONNECTED TO SAID SECOND ELECTRODE FOR MEASURING A FUNCTION OF THE SIGNALS DEVELOPED THEREAT AT BOTH OF SAID FREQUENCIES WITH SAID MATERIAL AT SAID PROBE AS AN INDICATION OF SAID PROPERTY OF SAID ELECTRIC MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |