US3230770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Honeywell Inc
•
Filing: 1961-06-29
•
Granted: 1966-01-25
•
Expires: 1981-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harry M Hermanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A FLUID LEVEL SENSING CAPACITOR FOR USE IN A CONDUCTIVE FLUID COMPRISING, IN COMBINATION: FIRST AND SECOND SUBSTANTIALLY EQUAL SOURCES OF POTENTIAL; A FIRST ELECTRODE INSULATED TO PREVENT DIRECT CONTACT WITH THE FLUID; A SECOND UNINSULATED ELECTRODE CONNECTED TO THE FIRST SOURCE OF POTENTIAL; AND A SCREEN ELECTRODE SURROUNDING SAID FIRST AND SECOND ELECTRODES CONNECTED TO THE SECOND SOURCE OF POTENTIAL SO THAT THE TENDENCY FOR LEAKAGE CURRENT TO FLOW FROM THE SECOND ELECTRODE THROUGH THE CONDUCTIVE FLUID IS MINIMIZED.
References Cited (Backward Citations)
US2200678A
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US3013102A
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US3022665A
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US3037385A
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US2699523A
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US2849882A
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US3119266A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |