Fluid flow measurement system
Abstract
Abstract FOUR VELOCITY MEASUREMENTS ARE MADE OF A FLUID FLOWING IN A PIPE. THE VELOCITY MEASUREMENTS ARE MADE BY UPSTREAM AND DOWNSTREAM TRANSDUCERS PROJECTING ACOSTIC ENERGY TOWARDS ONE ANOTHER ALONG AN ACOUSTIC PATH. WITH FOUR MEASUREMENTS THE ACOUSTIC PATHS LIE IN RESPECTIVE PLANES PARALLEL TO ONE ANOTHER AND AT A SPECIFIED DISTANCE FROM THE EDGE OR FROM THE CENTER OF THE PIPE. THE VELOCITY INDICATIONS OBTAINED ARE PROCESSED IN A DIGITAL PROCESSOR AND ARE MULTIPLIED BY A PREDETERMINED WEIGHTING FACTOR. THE SPECIFIED LOCATIONS OF THE PLANES, AND THE PREDETERMINED WEIGHTING FACTORS ARE INACCORDANCE WITH A WELL KNOWN MATHEMATICAL RELATIONSHIP UTILIZED IN THE NUMERICAL SOLUTION OF INTEGRALS, AND KNOWN AS THE GAUSSIAN QUADRATURE FORMULA OR TECHNIQUE. GREATER OR FEWER THAN FOUR PATHS MAY BE UTILIZED AND AS A VARIATION THE WEIGHTING FACTORS AND POSITIONING DESIGNATIONS MAY BE MADE IN ACCORDANCE WITH TWO OTHER WELL KNOWN MATHEMATICAL TECHNIQUES KNOWN AS THE CHEBYCHEFF (SPELLED VARIOUS WAYS E.G. CHEBYSHEV) OR LOBATTO TECHNIQUE RESPECTIVELY.
Inventors
- 👤 James T Malone
- 👤 Donald K Whirlow
Bibliographic Details
Claims Analysis
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |