US3308660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High precision flow meter
Assignee: Phillips Petroleum Co
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Filing: 1964-06-15
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Granted: 1967-03-14
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Ford Donald D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:39
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A FLUID METER COMPRISING IN COMBINATION: (A) A TUBE OF DROPLET-SIZE BORE HAVING A FLUID INLET AT ONE END AND A FLUID OUTLET AT THE OTHER END; (B) A FIRST PAIR OF FACING ELECTRODES IN SAID BORE; (C) A SECOND PAIR OF FACING ELECTRODES IN SAID BORE SUBSTANTIALLY SPACED FROM SAID FIRST PAIR AND DEFINING A PREDETERMINED BORE VOLUME BETWEEN THE TWO PAIRS OF ELECTRODES; (D) A PIPE OF SMALL BORE EXTENDING INTO THE FLUID INLET OF (A) FOR INJECTION OF MERCURY DROPLETS INTO SAID TUBE; (E) A SOURCE OF MERCURY CONNECTED WITH THE PIPE OF (D); AND (F) A NEEDLE VALVE IN THE DELIVERY END OF THE PIPE OF (D) COMMUNICATING WITH THE MERCURY SOURCE OF (E) FOR REGULATING THE FLOW OF DROPLETS OF MERCURY INTO SAID PIPE.
Claim 2
Dependent Claim
129 words
A FLUID METER COMPRISING IN COMBINATION: (A) A TUBE OF DROPLET-SIZE BORE HAVING A FLUID INLET AT ONE END AND A FLUID OUTLET AT THE OTHER END; (B) A FIRST PAIR OF FACING ELECTRODES IN SAID BORE; (C) A SECOND PAIR OF FACING ELECTRODES IN SAID BORE SUBSTANTIALLY SPACED FROM SAID FIRST PAIR AND DEFINING A PREDETERMINED BORE VOLUME BETWEEN THE TWO PAIRS OF ELECTRODES; (D) A PIPE OF SMALL BORE EXTENDING INTO THE FLUID INLET OF (A) FOR INJECTION OF MERCURY DROPLETS INTO SAID TUBE; (E) A SOURCE OF MERCURY CONNECTED WITH THE PIPE OF (D); AND (F) A NEEDLE VALVE IN THE DELIVERY END OF THE PIPE OF (D) COMMUNICATING WITH THE MERCURY SOURCE OF (E) FOR REGULATING THE FLOW OF DROPLETS OF MERCURY INTO SAID PIPE.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |