Patent US3312936A successfully refreshed from Google Patents.
US3312936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical fluid level indicating system
Assignee: Motors Liquidation Co
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Filing: 1964-04-10
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Granted: 1967-04-04
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Expires: 1984-04-10
Abstract
No abstract record available.
Inventors
- 👤 Gerald O Huntzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:01
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A LIQUID LEVEL INDICATING SYSTEM COMPRISING, A CIRCUIT HAVING A PAIR OF INPUT TERMINALS, FIRST AND SECOND CAPACITORS HAVING A COMMON JUNCTION CONNECTED ACROSS SAID INPUT TERMINALS, A CONTAINER, A PROBE MEANS ADAPTED TO CONTACT A QUANTITY OF LIQUID WHEN SAID LIQUID IS AT A PREDETERMINED LEVEL IN SAID CONTAINER, A RESISTOR, SAID RESISTOR AND SAID LIQUID BEING CONNECTED ACROSS THE INPUT TERMINALS OF SAID CIRCUIT AND FORMING A PART OF SAID CIRCUIT, MEANS CONNECTING THE JUNCTION OF SAID RESISTOR AND SAID PROBE WITH THE COMMON JUNCTION OF SAID CAPACITORS, MEANS FOR APPLYING A PULSATING VOLTAGE TO THE INPUT TERMINALS OF SAID CIRCUIT, AND A MEANS CONNECTED WITH THE COMMON JUNCTION OF SAID CAPACITORS FOR INDICATING A CONDITION WHERE THE LIQUID IS OUT OF CONTACT WITH THE PROBE.
Claim 2
Dependent Claim
128 words
A LIQUID LEVEL INDICATING SYSTEM COMPRISING, A CIRCUIT HAVING A PAIR OF INPUT TERMINALS, FIRST AND SECOND CAPACITORS HAVING A COMMON JUNCTION CONNECTED ACROSS SAID INPUT TERMINALS, A CONTAINER, A PROBE MEANS ADAPTED TO CONTACT A QUANTITY OF LIQUID WHEN SAID LIQUID IS AT A PREDETERMINED LEVEL IN SAID CONTAINER, A RESISTOR, SAID RESISTOR AND SAID LIQUID BEING CONNECTED ACROSS THE INPUT TERMINALS OF SAID CIRCUIT AND FORMING A PART OF SAID CIRCUIT, MEANS CONNECTING THE JUNCTION OF SAID RESISTOR AND SAID PROBE WITH THE COMMON JUNCTION OF SAID CAPACITORS, MEANS FOR APPLYING A PULSATING VOLTAGE TO THE INPUT TERMINALS OF SAID CIRCUIT, AND A MEANS CONNECTED WITH THE COMMON JUNCTION OF SAID CAPACITORS FOR INDICATING A CONDITION WHERE THE LIQUID IS OUT OF CONTACT WITH THE PROBE.
References Cited (Backward Citations)
US2744177A
Cited
US3206615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |