US3283574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic flowmeter
Assignee: ROTH LAB FOR PHYSICAL RES
•
Filing: 1964-09-21
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Granted: 1966-11-08
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Roth Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:11
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/66; G01F1/665
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A FLOWMETER FOR MEASURING FLOW OF A FLUID STREAM, THE COMBINATION WHICH COMPRISES A TRANSMITTING TRANSDUCER FOR TRANSMITTING A BEAM OF SONIC ENERGY ACROSS SAID STREAM, RECEIVING TRANSDUCER MEANS POSITIONED TO RECEIVE SAID SONIC BEAM AFTER TRAVERSAL THEREOF ACROSS SAID STREAM, SAID RECEIVING TRANSDUCER MEANS INCLUDING AT LEAST TWO RECEIVING TRANSDUCERS SPACED IN THE DIRECTION OF FLUID FLOW WHEREBY THE RELATIVE OUTPUTS THEREOF VARY WITH BEAM DISPLACEMENT, MEANS CONNECTED TO RECEIVE THE OUTPUTS OF SAID TWO RECEIVING TRANSDUCERS AND PRODUCE A FIRST RESPONSE PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID OUTPUTS, MEANS CONNECTED TO SAID RECEIVING TRANSDUCER MEANS FOR OBTAINING A SECOND RESPONSE PROPORTIONAL TO THE RECEIVED BEAM INTENSITY AND SUBSTANTIALLY INDEPENDENT OF BEAM DISPLACEMENT, AND MEANS FOR DIVIDING SAID FIRST RESPONSE BY SAID SECOND RESPONSE TO OBTAIN AN OUTPUT VARYING WITH FLUID FLOW BUT NOT SUBSTANTIALLY VARYING WITH BEAM ATTENUATION.
Claim 2
Dependent Claim
141 words
IN A FLOWMETER FOR MEASURING FLOW OF A FLUID STREAM, THE COMBINATION WHICH COMPRISES A TRANSMITTING TRANSDUCER FOR TRANSMITTING A BEAM OF SONIC ENERGY ACROSS SAID STREAM, RECEIVING TRANSDUCER MEANS POSITIONED TO RECEIVE SAID SONIC BEAM AFTER TRAVERSAL THEREOF ACROSS SAID STREAM, SAID RECEIVING TRANSDUCER MEANS INCLUDING AT LEAST TWO RECEIVING TRANSDUCERS SPACED IN THE DIRECTION OF FLUID FLOW WHEREBY THE RELATIVE OUTPUTS THEREOF VARY WITH BEAM DISPLACEMENT, MEANS CONNECTED TO RECEIVE THE OUTPUTS OF SAID TWO RECEIVING TRANSDUCERS AND PRODUCE A FIRST RESPONSE PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID OUTPUTS, MEANS CONNECTED TO SAID RECEIVING TRANSDUCER MEANS FOR OBTAINING A SECOND RESPONSE PROPORTIONAL TO THE RECEIVED BEAM INTENSITY AND SUBSTANTIALLY INDEPENDENT OF BEAM DISPLACEMENT, AND MEANS FOR DIVIDING SAID FIRST RESPONSE BY SAID SECOND RESPONSE TO OBTAIN AN OUTPUT VARYING WITH FLUID FLOW BUT NOT SUBSTANTIALLY VARYING WITH BEAM ATTENUATION.
References Cited (Backward Citations)
US2959054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |