Mass flow meter
Abstract
Abstract THE INVENTION RELATES TO MASS FLOW MEASUREMENTS. A CYLINDRICAL BODY HAVING A CURVED NOSE AT ONE END AND A FLAT BASE AT THE OTHER END IS CONNECTED TO A DISC OF SMALLER DIAMETER, WITH THE DISC BEING CENTERED COINCIDENT WITH THE LONGITUDINAL AXIS OF THE BODY AND BEING SPACED AXIALLY FROM THE BASE THEREOF. THIS ASSEMBLY, WHEN ALIGNED AXIALLY AT MIDSTREAM OF A FLOWING FLUID WITH THE NOSE POINTED UPSTREAM, GENERATES A DOWNSTREAM WAKE IN WHICH THE FLUID TRACES AN OSCILLATORY FLOW PATTERN. THE MASS FLOW OF THE FLUID IS DETERMINED FROM THE FREQUENCY AND AMPLITUDE OF THE OSCILLATIONS. THE FREQUENCY VARIES DIRECTLY WITH THE VELOCITY OF THE FLUID FLOW WHEREAS THE AMPLITUDE VARIES WITH THE PRODUCT OF THE FLUID DENSITY AND THE SQUARE OF THE FLOW VELOCITY. THE DEVICE PRODUCES SESIRABLE LOW PRESSURE LOSSES AND HAS A SIMPLE INTERNAL GEOMETRY.
Inventors
- 👤 R Mahon
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |