US3144767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining fluid flow rate
Assignee: Phillips Petroleum Co
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Filing: 1961-07-03
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Granted: 1964-08-18
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Maurice K Testerman
- 👤 Paul C Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN ULTRASONIC FREQUENCY WAVE GENERATOR SERVING AS A FLUID FLOW RATE MEASURING DEVICE COMPRISING AN ORIFICE HAVING RECTANGULAR CROSS-SECTIONAL AREA WITH A WIDTH TO HEIGHT RATIO GREATER THAN ONE SO AS TO PERMIT A STREAM OF FLUID OF VARIABLE MASS FLOW TO JET THEREFROM, A RESONANT CAVITY ADJACENT SAID ORIFICE AND ALSO DISPOSED BELOW THE FLOWING GAS STREAM; SAID FLOWING FLUID STREAM IMPINGING UPON THE EDGE OF SAID RESONANT CAVITY OPPOSITE SAID ORIFICE, WHEREBY THE NATURAL ENERGY UNDULATIONS IN SAID STREAM ARE AMPLIFIED IN THE ULTRASONIC FREQUENCY RANGE.
Claim 2
Dependent Claim
88 words
AN ULTRASONIC FREQUENCY WAVE GENERATOR SERVING AS A FLUID FLOW RATE MEASURING DEVICE COMPRISING AN ORIFICE HAVING RECTANGULAR CROSS-SECTIONAL AREA WITH A WIDTH TO HEIGHT RATIO GREATER THAN ONE SO AS TO PERMIT A STREAM OF FLUID OF VARIABLE MASS FLOW TO JET THEREFROM, A RESONANT CAVITY ADJACENT SAID ORIFICE AND ALSO DISPOSED BELOW THE FLOWING GAS STREAM; SAID FLOWING FLUID STREAM IMPINGING UPON THE EDGE OF SAID RESONANT CAVITY OPPOSITE SAID ORIFICE, WHEREBY THE NATURAL ENERGY UNDULATIONS IN SAID STREAM ARE AMPLIFIED IN THE ULTRASONIC FREQUENCY RANGE.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |