Method and apparatus for measuring and dispensing predetermined liquid volumes
Abstract
Abstract AN UPRIGHT CYLINDRICAL CONTAINER IS PROVIDED WITH A LIQUID LEVEL SENSING PROBE WHICH MAY BE SET AT A PREDETERMINED POSITION IN THE CONTAINER. THE CONTAINER IS FILLED FROM A PREDETERMINED MINIMUM LEVEL UNTIL THE TOP SURFACE OF THE LIQUID IS SENSED BY THE PROBE, DISCONTINUING FILLING. THE LIQUID IS THEN DISCHARGED TO THE PREDETERMINED MINIMUM LEVEL. THE PROBE IS PREFERABLY MOUNTED AT THE END OF A CABLE OR CHAIN. THE PROBE IS LOWERED TO CONTACT THE SURFACE OF THE LIQUID AT ITS MINIMUM LEVEL. THE CHAIN OR CABLE IS DRIVEN BY A SYNCHRONOUS MOTOR OR STEPPING MOTOR. WHEN DRIVEN BY A SYNCHRONOUS MOTOR, THE MOTOR A DRIVEN FOR A PREDETERMINED AMOUNT OF TIME TO RAISE THE PROBE TO THE PREDETERMINED POSITION. WHEN DRIVEN BY A STEPPING MOTOR, A SETTABLE COUNTER PROVIDES THE STEPPING MOTOR WITH A PREDETERMINED NUMBER OF STEPPING SIGNALS FROM A PULSE SOURCE.
Inventors
- 👤 Matthew G Maselli Jr
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |