Pressure measuring system
Abstract
Abstract A CONTAINER OF SPECIFIC VOLUME IS PRESSURIZED TO THE LEVEL OF AN UNKNOWN PRESSURE. A DIAPHRAGM EXPOSED TO THE UNKNOWN PRESSURE AND TO THE CONTAINER IS UTILIZES TO CONTROL A VALVE FOR MAKING THE PRESSURE IN THE CONTAINER EQUAL TO THE UNKNOWN PRESSURE. AFTER THE CONTAINER IS PRESSURIZED TO THE DESIRED LEVEL. IT IS ISOLATED FROM ITS PRESSURIZING SOURCE AND THE FLUID IN THE CONTAINER IS PROCESSED THROUGH A FLUIDIC BISTABLE OSCILLATOR IN A MANNER TO PRODUCE OSCILLATING MASS-FLOW PULSES. THESE PULSES ARE COUNTED AS INCREMENTAL AND ACCUMULATING PRESSURE VALUE IN SUITABLE REGISTERS TO PROVIDE A DIGITAL DISPLAY OF THE PRESSURE IN THE CONTAINER, AND HENSE THE UNKNOWN PRESSURE. A PRESSURE OPERATED SWITCH IS PROVIDED TO RESET THE COUNTERS WHEN THE CONTAINERS IS ISOLATED FROM ITS PRESSUREIZING SOURCE. D R A W I N G
Inventors
- 👤 C Buddecke
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |