Mass measuring system
Abstract
Abstract A CONTINUOUSLY WEIGHING CONVEYOR IS DESCRIBED IN WHICH A NINETY DEGREE PHASE ANGLE LAG IS CREATED BETWEEN THE RESONANT NATURAL VIBRATING FREQUENCY OF A CONVEYOR MATERIAL WEIGHT PER FOOT CALLED HEREAFTER LOAD AND THE FREQUENCY OF A MOTOR DRIVEN ECCENTRIC INDUCING THE VIBRATION AND DEVIATION OF SAID PHASE ANGLE FROM NINETY DEGREES IS DETECTED BY A PHASE SENSITIVE NETWORK WHICH AUTOMATICALLY ADJUSTS THE MOTOR SPEED FOR RESONANCE. THE SPEED OF THE MOTOR IS CONVERTED INTO A NONUNIFORM LINEAR MOTION AND SAID NONUNIFORM LINEAR MOTION IS TRANSFORMED INTO ROTARY MOTION PROPORTIONAL TO THE LOAD WHICH ACTUATES A POTENTIOMETER. THE PRODUCT OF THE LOAD AND THE LOAD CONVEYOR SPEED REPRESENTING THE WEIGHT PER TIME UNIT CONVEYED BY THE WEIGHT CONVEYOR IS OBTAINED BY EXTENDING THE VOLTAGE OF A TACHOMETER GENERATOR DRIVEN BY THE LOAD CONVEYOR ACROSS THE POTENTIOMETER WINDING.
Inventors
- 👤 John L Christmann
Bibliographic Details
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |