US3213360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic gauging system
Assignee: K F PRODUCTS Inc
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Filing: 1962-06-25
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Granted: 1965-10-19
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Gilbert V O Cook
- 👤 Robert S Henley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ELECTRONIC GAUGING SYSTEM COMPRISING A BALANCED IMPEDANCE BRIDGE HAVING AN ADJUSTABLE RATIO IMPEDANCE MEANS CONSTITUTING ONE HALF THEREOF AND A DIFFERENTIAL CAPACITOR CONSTITUTING THE OTHER HALF, SAID IMPEDANCE MEANS INCLUDING A RATIO TAP DEFINING TWO ARMS IN SAID ONE HALF OF THE BRIDGE, SAID CAPACITOR COMPRISING TWO COAXIAL CYLINDRICAL PLATES OF EQUAL DIAMETER AND SPACED AXIALLY FROM ONE ANOTHER AND A THIRD CYLINDRICAL PLATE COAXIAL WITH SAID TWO PLATES AND SPACED RADIALLY THEREFROM AND COUPLED CAPACITIVELY THEREWITH AND DIFFERENTIALLY MOVABLE AXIALLY WITH RESPECT THERETO AND PROVIDING TWO OPPOSITELY VARIABLE CAPACITANCE ARMS FOR SAID OTHER HALF OF SAID BRIDGE, MEANS FOR IMPRESSING AN ALTERNATING ELECTRIC POTENTIAL ON SAID BRIDGE ACROSS SAID IMPEDANCE MEANS AND SAID CAPACITOR IN PARALLEL, MEANS CONNECTED BETWEEN SAID THIRD PLATE AND THE JUNCTION BETWEEN SAID TWO RMS OF SAID ONE
Claim 2
Dependent Claim
134 words
AN ELECTRONIC GAUGING SYSTEM COMPRISING A BALANCED IMPEDANCE BRIDGE HAVING AN ADJUSTABLE RATIO IMPEDANCE MEANS CONSTITUTING ONE HALF THEREOF AND A DIFFERENTIAL CAPACITOR CONSTITUTING THE OTHER HALF, SAID IMPEDANCE MEANS INCLUDING A RATIO TAP DEFINING TWO ARMS IN SAID ONE HALF OF THE BRIDGE, SAID CAPACITOR COMPRISING TWO COAXIAL CYLINDRICAL PLATES OF EQUAL DIAMETER AND SPACED AXIALLY FROM ONE ANOTHER AND A THIRD CYLINDRICAL PLATE COAXIAL WITH SAID TWO PLATES AND SPACED RADIALLY THEREFROM AND COUPLED CAPACITIVELY THEREWITH AND DIFFERENTIALLY MOVABLE AXIALLY WITH RESPECT THERETO AND PROVIDING TWO OPPOSITELY VARIABLE CAPACITANCE ARMS FOR SAID OTHER HALF OF SAID BRIDGE, MEANS FOR IMPRESSING AN ALTERNATING ELECTRIC POTENTIAL ON SAID BRIDGE ACROSS SAID IMPEDANCE MEANS AND SAID CAPACITOR IN PARALLEL, MEANS CONNECTED BETWEEN SAID THIRD PLATE AND THE JUNCTION BETWEEN SAID TWO RMS OF SAID ONE
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |