Apparatus for particle separation
Abstract
Abstract A SELECTED LOW AVERAGE DC POWER DISSIPATION IN THE MIXTURE AND WHICH MAY BE SUBSTANTIALLY CONSTANT IN SPITE OF VARIATIONS IN THE IMPEDENACE OF THE MIXTURE THROUGHOUT THE PERIOD OF THE SEPARATION. A MIXTURE OF PARTICLES IN A SUSPENDING MEDIUM IS SUBJECTED TO AN INTERMITTENT DC ELECTRICAL FIELD OF STRENGTH WHICH IS SUFFICIENT TO PRODUCE A SHARP SEPARATION OF TWO OR MORE COMPONENTS OF THE MIXTURE. THE DUTY CYCLE OF THE FIELD IS SUCH THAT ELECTRIC POWER DISSIPATION IN THE MIXTURE PRODUCED BY THE INTERMITTENT DC ELECTRIC FIELD DOES NOT MATERIALLY CAUSE LOSS OF SHARPENESS OF SEPARATION OF THE COMPONENTS, AND THE APPLICATION OF THE INTERMITTENT DC ELECTRIC FIELD IS REGULATED IN SUCH A WAY AS TO PRODUCE
Inventors
- 👤 Robert H Dilworth
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |