Method and means for measuring depth of water or the like
Abstract
Abstract AN ELECTRONIC DEPTH GAUGE WITHIN A LOW FREQUENCY PULSE GENERATOR IS CONNECTED TO AN ULTRASONIC TRANSDUCER THROUGH AN OSCILLATOR TO EMIT A SIGNAL DOWNWARD THROUGH A BODY OF WATER OR THE LIKE, WITH THE REFLECTED SIGNAL BEING RECEIVED BY THE TRANSDUCER AND CONVERTED TO A REFLECTED VOLTAGE INPUT. AN AMPLIFIER IS CONNECTED TO THE TRANSDUCER TO AMPLIFY THE REFLECTED VOLTAGE, WHICH IN TURN IS CONNECTED TO A SWITCHING MECHANISM. THE SWITCHING MECHANISM IS CONNECTED TO THE LOW FREQUENCY PULSE GENERATOR AND A METER OF THE D''ARSONVAL TYPE, WHICH IS GRADUATED IN FEET AND WHICH MEASURES AVERAGE CURRENT VALUES PROPORTIONAL TO THE TIME THAT THE UNIT MEASURES MAXIMUM DEPTH WITH RESPECT TO THE TIME THAT THE SWITCHING MECHANISM IS INTERRUPTED BY THE AMPLIFIED VOLTAGE OF THE SIGNAL REFLECTED FROM THE BOTTOM OF THE BODY OF WATER.
Inventors
- 👤 Roger C Camp
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |