Ultrasonic flow quantity measuring system
Abstract
Abstract AN APPARATUS FOR ULTRASONICALLY MEASURING THE QUANTITY OF FLOW OF A LIQUID IN A CONDUIT. MEANS FOR PRODUCING TWO ULTRASONIC PROPAGATION PATHS BETWEEN OPPOSITE SIDE WALLS OF THE CONDUIT, THE MEANS FOR PROPAGATING SAID PATHS BEING DISPOSED IN A PLANE CONTAINING TWO PARALLEL LONGITUDINAL STRAIGHT LINES AND WITH INCLINATIONS IN A MUTUALLY SUPPLEMENTARY RELATION TO SAID TWO LINES. THE APPARATUS INCLUDES MEANS FOR PROPAGATING ULTRASONIC WAVES IN BOTH DIRECTIONS FORTH AND BACK IN EACH OF THE TWO PATHS AFORESAID. FLOW IS DETERMINED BY MEASURING THE PROPAGATION SPEEDS IN THE DOWNSTREAM AND UPSTREAM DIRECTIONS AND CALCULATING THE AVERAGE VALUE OF THE DIFFERENCES BETWEEN SAID DIFFERENT SPEEDS. ONE CAN, AND PREFERABLY DOES, PROVIDE THE ULTRASONIC WAVES IN ONE PATH BY REFLECTION OF THE ULTRASONIC WAVES IN THE OTHER PATH.
Inventors
- 👤 Miaki Yamamoto
- 👤 Shin Amano
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |