Patent FR370467A successfully refreshed from Google Patents.
US3282104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitance level gauge having plural sensors of differing capacitance
Assignee: Honeywell Inc
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Filing: 1963-12-19
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Granted: 1966-11-01
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 John J Exon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:15
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263; G01F23/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
301 words
FUEL GAUGE APPARATUS INVOLVING SELECTIVE FUEL QUANTITY INDICATION OF A PLURALITY OF TANKS WHEREIN THE TANK MEASURING CAPACITORS HAVE AT LEAST TWO FUEL QUANTITY PER CAPACITANCE RELATIONSHIPS COMPRISING, INCOMBINATION: FIRST TRANSFORMER MEANS INCLUDING PRIMARY AND SECONDARY WINDING MEANS; REFERENCE POTENTIAL MEANS CONNECTED TO A TAP ON SAID SECONDARY WINDING MEANS OF SAID FIRST TRANSFORMER MEANS; SUMMING AMPLIFIER MEANS INCLUDING INPUT MEANS AND OUTPUT MEANS; SWITCH MEANS CONNECTED TO ONE END OF SAID SECONDARY WINDING MEANS OF SAID FIRST TRANSFORMER MEANS, SAID SWITCH MEANS SELECTIVELY CONNECTING A PLURALITY OF OUTPUT CONTACTS TO SAID SECONDARY WINDING MEANS FOR RECEIVING A FIRST SIGNAL OF A FIRST PHASE THEREFROM; FIRST MEANS FOR SUPPLYING A SECOND SIGNAL OF A PHASE OPPOSITE SAID FIRST PHASE, SAID FIRST MEANS BEING CONNECTED TO SAID SECONDARY MEANS OF SAID TRANSFORMER MEANS; REFERENCE FIRST CAPACITIVE MEANS CONNECTED BETWEEN SAID FIRST MEANS AND SAID INPUT MEANS OF SAID SUMMING AMPLIFIER MEANS; TANK UNIT SECOND CAPACITIVE MEANS CONNECTED BETWEEN ONE OF SAID PLURALITY OF SAID OUTPUT CONTACTS ON SAID SWITCH MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS; SECOND TRANSFORMER MEANS CONNECTED BETWEEN ANOTHER OF SAID PLURALITY OF OUTPUT CONTACTS OF SAID SWITCH MEANS AND SAID REFERENCE POTENTIAL MEANS, SAID SECOND TRANSFORMER MEANS INCLUDING FIRST AND SECOND VARIABLE POTENTIAL OUTPUTS; TANK UNIT THIRD CAPACITIVE MEANS CONNECTED BETWEEN SAID FIRST OUTPUT OF SAID SECOND TRANSFORMER MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS; REFERENCE FOURTH CAPACITIVE MEANS CONNECTED BETWEEN SAID SECOND OUTPUT OF SAID SECOND TRANSFORMER MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS; MEANS CONNECTED BETWEEN SAID OUTPUT MEANS OF SAID AMPLIFIER MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS FOR APPLYING A REBALANCE SIGNAL THERETO FOR MINIMIZING THE EFFECTIVE INPUT SIGNAL APPLIED TO SAID AMPLIFIER MEANS; AND INDICATOR MEANS CONNECTED TO SAID OUTPUT MEANS OF SAID AMPLIFIER MEANS.
Claim 2
Dependent Claim
301 words
FUEL GAUGE APPARATUS INVOLVING SELECTIVE FUEL QUANTITY INDICATION OF A PLURALITY OF TANKS WHEREIN THE TANK MEASURING CAPACITORS HAVE AT LEAST TWO FUEL QUANTITY PER CAPACITANCE RELATIONSHIPS COMPRISING, INCOMBINATION: FIRST TRANSFORMER MEANS INCLUDING PRIMARY AND SECONDARY WINDING MEANS; REFERENCE POTENTIAL MEANS CONNECTED TO A TAP ON SAID SECONDARY WINDING MEANS OF SAID FIRST TRANSFORMER MEANS; SUMMING AMPLIFIER MEANS INCLUDING INPUT MEANS AND OUTPUT MEANS; SWITCH MEANS CONNECTED TO ONE END OF SAID SECONDARY WINDING MEANS OF SAID FIRST TRANSFORMER MEANS, SAID SWITCH MEANS SELECTIVELY CONNECTING A PLURALITY OF OUTPUT CONTACTS TO SAID SECONDARY WINDING MEANS FOR RECEIVING A FIRST SIGNAL OF A FIRST PHASE THEREFROM; FIRST MEANS FOR SUPPLYING A SECOND SIGNAL OF A PHASE OPPOSITE SAID FIRST PHASE, SAID FIRST MEANS BEING CONNECTED TO SAID SECONDARY MEANS OF SAID TRANSFORMER MEANS; REFERENCE FIRST CAPACITIVE MEANS CONNECTED BETWEEN SAID FIRST MEANS AND SAID INPUT MEANS OF SAID SUMMING AMPLIFIER MEANS; TANK UNIT SECOND CAPACITIVE MEANS CONNECTED BETWEEN ONE OF SAID PLURALITY OF SAID OUTPUT CONTACTS ON SAID SWITCH MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS; SECOND TRANSFORMER MEANS CONNECTED BETWEEN ANOTHER OF SAID PLURALITY OF OUTPUT CONTACTS OF SAID SWITCH MEANS AND SAID REFERENCE POTENTIAL MEANS, SAID SECOND TRANSFORMER MEANS INCLUDING FIRST AND SECOND VARIABLE POTENTIAL OUTPUTS; TANK UNIT THIRD CAPACITIVE MEANS CONNECTED BETWEEN SAID FIRST OUTPUT OF SAID SECOND TRANSFORMER MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS; REFERENCE FOURTH CAPACITIVE MEANS CONNECTED BETWEEN SAID SECOND OUTPUT OF SAID SECOND TRANSFORMER MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS; MEANS CONNECTED BETWEEN SAID OUTPUT MEANS OF SAID AMPLIFIER MEANS AND SAID INPUT MEANS OF SAID AMPLIFIER MEANS FOR APPLYING A REBALANCE SIGNAL THERETO FOR MINIMIZING THE EFFECTIVE INPUT SIGNAL APPLIED TO SAID AMPLIFIER MEANS; AND INDICATOR MEANS CONNECTED TO SAID OUTPUT MEANS OF SAID AMPLIFIER MEANS.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |