US3334339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel gas gauge with low-level warning indicator
Assignee: Individual
•
Filing: 1965-04-16
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Granted: 1967-08-01
•
Expires: 1985-04-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank E Mccauley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:44
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A LOW-LEVEL WARNING INDICATOR ADAPTED TO BE CONNECTED TO AN ELECTRICAL FUEL GAUGE SYSTEM HAVING A FLOAT OPERATED VARIABLE IMPEDANCE TANK UNIT AND A REMOTELY POSITIONED ELECTRICALLY OPERATED METER TYPE INDICATOR CONNECTED THERETO AND CONTROLLABLY ENERGIZED THEREFROM COMPRISING, A CONTROL CIRCUIT INCLUDING AN IMPEDANCE MATCHING ELEMENT AND A SWITCHING ELEMENT, SAID ELEMENTS BEING DIRECTLY COUPLED TOGETHER WITH A SIGNAL INPUT CONDUCTOR CONNECTED TO THE IMPEDANCE MATCHING ELEMENT AND ADAPTED TO BE CONNECTED BETWEEN THE FLOAT OPERATED VARIABLE IMPENDANCE AND THE METER TYPE INDICATOR SO AS NOT TO ALTER THE IMPEDANCE TO THE FUEL GUAGE SYSTEM, A SIGNAL ENERGIZING CONDUCTOR CONNECTED TO THE SWITCHING ELEMENT AND ADAPTED TO BE CONNECTED TO AN ELECTRICAL SOURCE TO ENERGIZED BOTH THE IMPEDANCE MATCHING ELEMENT AND THE SWITCHING ELEMENT, AN INDICATOR LIGHT CONNECTED IN AN ENERGIZING CIRCUIT CONTROLLED BY THE SWITCHING ELEMENT, AND A COMMON RETURN CONNECTION FOR THE ELEMENTS OF THE CONTROL CIRCUIT AND THE INDICATOR LIGHT TO COMPLETE THE ENERGIZING CIRCUIT FOR SAID ELEMENTS AND THE INDICATOR LIGHT.
Claim 2
Dependent Claim
165 words
A LOW-LEVEL WARNING INDICATOR ADAPTED TO BE CONNECTED TO AN ELECTRICAL FUEL GAUGE SYSTEM HAVING A FLOAT OPERATED VARIABLE IMPEDANCE TANK UNIT AND A REMOTELY POSITIONED ELECTRICALLY OPERATED METER TYPE INDICATOR CONNECTED THERETO AND CONTROLLABLY ENERGIZED THEREFROM COMPRISING, A CONTROL CIRCUIT INCLUDING AN IMPEDANCE MATCHING ELEMENT AND A SWITCHING ELEMENT, SAID ELEMENTS BEING DIRECTLY COUPLED TOGETHER WITH A SIGNAL INPUT CONDUCTOR CONNECTED TO THE IMPEDANCE MATCHING ELEMENT AND ADAPTED TO BE CONNECTED BETWEEN THE FLOAT OPERATED VARIABLE IMPENDANCE AND THE METER TYPE INDICATOR SO AS NOT TO ALTER THE IMPEDANCE TO THE FUEL GUAGE SYSTEM, A SIGNAL ENERGIZING CONDUCTOR CONNECTED TO THE SWITCHING ELEMENT AND ADAPTED TO BE CONNECTED TO AN ELECTRICAL SOURCE TO ENERGIZED BOTH THE IMPEDANCE MATCHING ELEMENT AND THE SWITCHING ELEMENT, AN INDICATOR LIGHT CONNECTED IN AN ENERGIZING CIRCUIT CONTROLLED BY THE SWITCHING ELEMENT, AND A COMMON RETURN CONNECTION FOR THE ELEMENTS OF THE CONTROL CIRCUIT AND THE INDICATOR LIGHT TO COMPLETE THE ENERGIZING CIRCUIT FOR SAID ELEMENTS AND THE INDICATOR LIGHT.
References Cited (Backward Citations)
US2756410A
Cited
US2736883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |