Mass flowmeter
Abstract
Abstract A FLOWMETER WHICH OPERATES ON A TIME-BASE ANGULARMOMENTUM PRINCIPLE TO PROVIDE ACCURATE TIME-MASS GAGING OF FLUID STREAMS OF VARYING DENSITY AND VISCOSITY. THE FLOWMETER INCLUDES A ROTATABLE DRIVE TURBINE AND A ROTATABLE REACTION TURBINE WHICH IS MECHANICALLY COUPLED TO THE DRIVE TURBINE THROUGH A LINEAR SPIRAL SPRING WHICH CAUSES THE REACTION TURBINE TO LAG THE DRIVE TURBINE BY A LAG ANGLE WHICH WHEN MEASURED ON A TIME-BASE PRODUCES A SIGNAL WHICH IS PROPORTIONAL TO THE MASS FLOW RATE OF THE FLUID STREAM. THE DRIVE TURBINE INCLUDES A PLURALITY OF BYPASS OPENINGS WHICH PERMIT FLOW OF THE FLUID STREAM THERETHROUGH AND IS PROVIDED WITH A PLURALITY OF VARIABLE ANGLE TURBINE BLADES WHICH ARE DISPOSED ADJACENT THE BYPASS OPENINGS TO PROGRESSIVELY PERMIT INCREASED FLOW THROUGH THE BYPASS OPENINGS WHEN THE PRESSURE DROP ACROSS THE DRIVE TURBINE EXCEEDS A PREDETERMINED VALUE.
Inventors
- 👤 Richey L Scott
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |