US3237453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic flowmeter system
Assignee: Tokyo Keiki Inc
•
Filing: 1963-08-01
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Granted: 1966-03-01
•
Expires: 1983-08-01
Abstract
No abstract record available.
Inventors
- 👤 Yamamoto Miaki
- 👤 Ito Kazuyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/66; G01F1/667; G01H; G01H5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN ULTRASONIC FLOWMETER SYSTEM, CHARACTERIZED IN COMPRISING A FIRST PROBE MEANS, ATTACHED TO A VESSEL THROUGH WHICH A FLUID TO BE MEASURED IS FLOWING, FOR OBLIQUELY TRANSMITTING A TRAIN OF ULTRASONIC PULSES; A SECOND PROBE MEANS HAVING SUBSTANTIALLY THE SAME CHARACTERISTICS AS THE FIRST PROBE MEANS FOR RECEIVING THE TRANSMITTED ULTRASONIC PULSES, SAID SECOND PROBE MEANS BEING ATTACHED TO THE VESSEL AT A POSITION ON THE SIDE OPPOSITE SAID FIRST PROBE MEANS WHICH PERMITS MOST EFFICIENT RECEPTION OF THE TRANSMITTED ULTRASONIC PULSES; ELECTRICAL CIRCUIT MEANS IN RESPONSE TO THE RECEPTION OF PULSES IN THE SECOND PROBE MEANS FOR CAUSING THE FIRST PROBE MEANS TO TRANSMIT A NEXT ULTRASONIC PULSE; SWITCHING MEANS FOR REVERSING THE TRANSMISSION AND RECEPTION OF ULTRASONIC PULSES OF THE TWO PROBES AT PREDETERMINED TIME INTERVALS, AND MEANS FOR COUNTING THE DIFFERENCE BETWEEN THE FREQUENCIES OF PULSE REPETITION IN THE ELECTRICAL CIRCUIT MEANS IN THE CO-CURRENT AND COUNTER-CURRENT CASES, THEREBY TO MEASURE THE FLOW VELOCITY OF THE FLUID FLOWING IN THE VESSEL.
Claim 2
Dependent Claim
164 words
AN ULTRASONIC FLOWMETER SYSTEM, CHARACTERIZED IN COMPRISING A FIRST PROBE MEANS, ATTACHED TO A VESSEL THROUGH WHICH A FLUID TO BE MEASURED IS FLOWING, FOR OBLIQUELY TRANSMITTING A TRAIN OF ULTRASONIC PULSES; A SECOND PROBE MEANS HAVING SUBSTANTIALLY THE SAME CHARACTERISTICS AS THE FIRST PROBE MEANS FOR RECEIVING THE TRANSMITTED ULTRASONIC PULSES, SAID SECOND PROBE MEANS BEING ATTACHED TO THE VESSEL AT A POSITION ON THE SIDE OPPOSITE SAID FIRST PROBE MEANS WHICH PERMITS MOST EFFICIENT RECEPTION OF THE TRANSMITTED ULTRASONIC PULSES; ELECTRICAL CIRCUIT MEANS IN RESPONSE TO THE RECEPTION OF PULSES IN THE SECOND PROBE MEANS FOR CAUSING THE FIRST PROBE MEANS TO TRANSMIT A NEXT ULTRASONIC PULSE; SWITCHING MEANS FOR REVERSING THE TRANSMISSION AND RECEPTION OF ULTRASONIC PULSES OF THE TWO PROBES AT PREDETERMINED TIME INTERVALS, AND MEANS FOR COUNTING THE DIFFERENCE BETWEEN THE FREQUENCIES OF PULSE REPETITION IN THE ELECTRICAL CIRCUIT MEANS IN THE CO-CURRENT AND COUNTER-CURRENT CASES, THEREBY TO MEASURE THE FLOW VELOCITY OF THE FLUID FLOWING IN THE VESSEL.
References Cited (Backward Citations)
US2949772A
Cited
US3007637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |