US3620085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the level of liquid in a reservoir
Assignee: CERMAT
•
Filing: 1969-10-15
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Granted: 1971-11-16
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Expires: 1989-10-15
Abstract
Abstract AT LEAST TWO MANOMETER TUBES, EACH TUBE BEING CONNECTED BETWEEN TWO PROBES LOCATED AT DIFFERENT LEVELS IN A RESERVOIR. THE PROBES MAY BE INSUFFLATION TUBES CONNECTED TO A GAS SUPPLY. A SCALE MOVABLE IN RELATION TO THE MANOMETER TUBES CARRIES AT LEAST TWO SERIES OF CURVES, EACH ASSOCIATED WITH ONE OF THE TUBES. EACH CURVE IN EACH SEREIS REPRESENTS THE HEIGHT OF LUQID IN ITS ASSOCIATED MANOMETER TUBE FOR A GIVEN LEVEL OF LIUQID IN THE RESERVOIR FOR A DIFFERENT LIQUID DENSITY. A REGULATOR IS INTERPOSED BETWEEN EACH INSUFFLATION TUBE AND ITS MANOMETER TUBE FOR MAINTAINING THE FLOW OF GAS CONSTANT THROUGH THE INSUFFLATION RUBES.
Inventors
- 👤 Danny James Khoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/16; G01F23/165; G01F23/167; G01F23/162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |