US3287263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for controlling addition of reagents to the feed of phase separation vessels
Assignee: Atlas Copco AB
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Filing: 1963-01-11
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Granted: 1966-11-22
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Expires: 1983-01-11
Abstract
No abstract record available.
Inventors
- 👤 Willard M Johnson
- 👤 Louis B Carr
- 👤 Lewis A Painter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:55
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/01; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF CONTROLLING THE ADDITION OF A REAGENT TO THE FEED OF A CONTINUOUSLY-FED SETTLING VESSEL FOR LOQUIDSOLIDS PHASE SEPARATION, COMPRISING: CONTINUOUSLY WITHDRAWING A SAMPLE OF THE FINAL FEED MATERIAL FROM THE FINAL FEED STREAM TO SUCH APPARATUS; CONTINUOUSLY FLOWING SAID SAMPLE INTO A RELATIVELY SMALL, GRAVITY-SEPARATION VESSEL FOR REPRESENTATIVE PHASE SEPARATION; SEPARATELY DISCHARGING THE SEPARATED LIQUID AND SOLIDS PHASE OF THE SAMPLE FROM THE GRAVITY-SEPARATION VESSEL ON A CONTINUOUS BASIS AT A VOLUMETRIC RATIO PREDETERMINED BY CONDITIONS DESIRED IN SAID SETTLING VESSEL; SENSING CHANGES IN THE INTERFACE LEVEL BETWEEN SAID LIQUID AND SOLIDS PHASES OF SAID SAMPLE IN THE SEPARATION VESSEL; AND ADJUSTING THE REGENT ADDITION IN ACCORDANCE WITH VARIATIONS IN SAID INTERFACE LEVEL.
Claim 2
Independent Claim
116 words
A METHOD OF CONTROLLING THE ADDITION OF A REAGENT TO THE FEED OF A CONTINUOUSLY-FED SETTLING VESSEL FOR LOQUIDSOLIDS PHASE SEPARATION, COMPRISING: CONTINUOUSLY WITHDRAWING A SAMPLE OF THE FINAL FEED MATERIAL FROM THE FINAL FEED STREAM TO SUCH APPARATUS; CONTINUOUSLY FLOWING SAID SAMPLE INTO A RELATIVELY SMALL, GRAVITY-SEPARATION VESSEL FOR REPRESENTATIVE PHASE SEPARATION; SEPARATELY DISCHARGING THE SEPARATED LIQUID AND SOLIDS PHASE OF THE SAMPLE FROM THE GRAVITY-SEPARATION VESSEL ON A CONTINUOUS BASIS AT A VOLUMETRIC RATIO PREDETERMINED BY CONDITIONS DESIRED IN SAID SETTLING VESSEL; SENSING CHANGES IN THE INTERFACE LEVEL BETWEEN SAID LIQUID AND SOLIDS PHASES OF SAID SAMPLE IN THE SEPARATION VESSEL; AND ADJUSTING THE REGENT ADDITION IN ACCORDANCE WITH VARIATIONS IN SAID INTERFACE LEVEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |