Patent US742583A successfully refreshed from Google Patents.
Patent US3112239A successfully refreshed from Google Patents.
US3112239A
Expired / Lapsed
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Method and apparatus for preparing very soluble fine powders from liquids
Assignee: Alfa Laval SA
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Filing: 1960-04-26
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Granted: 1963-11-26
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Expires: 1980-04-26
Abstract
No abstract record available.
Inventors
- 👤 Andermatt Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:52
CPC Classifications
A; A23; A23C; A23C1/00; A23C1/04; B; B01; B01D; B01D1/00; B01D1/16; B01D1/18; B01J; B01J8/00; B01J8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A METHOD OF TREATING A LIQUID MIXTURE CONTAINING SOLID MATTER DISSOLVED OR SUSPENDED THEREIN IN ORDER TO RECOVER THE SOLID MATTER IN DIVIDED FORM, VERY SOLUBLE IN A LIQUID, CONSISTING IN PROJECTING THIS LIQUID MIXTURE AT VERY HIGH SPEED WITH THE ASSISTANCE OF CENTRIFUGAL FORCE AND IN THE FORM OF A THIN HORIZONTAL SHEET IN THE UPPER PORTION OF A HOT-ATMOSPHERE DRYING TOWER, AND TO COLLECT THE POWDERED PRODUCT AT THE BOTTOM OF SAID TOWER, ACCORDING TO WHICH THE FINEST PARTICLES OF THE POWDERED PRODUCT ARE EXTRACTED BY SUCTION IN SAID TOWER BELOW THE HORIZONTAL SHEET OF LIQUID MIXTURE AND ARE PROJECTED AT VERY HIGH SPEED WITH THE ASSISTANCE OF CENTRIFUGAL FORCE AND IN THE FORM OF A THIN HORIZONTAL SHEET AT A LEVEL HIGHER THAN THAT OF SAID SHEET OF LIQUID MIXTURE AND A GAS IS BLOWN THROUGH THESE SHEETS IN ORDER TO BLOW THE SHEET OF THE FINEST PARTICLES OF THE POWDERED PRODUCT AGAINST THE SHEET OF LIQUID MIXTURE.
Claim 2
Independent Claim
161 words
A METHOD OF TREATING A LIQUID MIXTURE CONTAINING SOLID MATTER DISSOLVED OR SUSPENDED THEREIN IN ORDER TO RECOVER THE SOLID MATTER IN DIVIDED FORM, VERY SOLUBLE IN A LIQUID, CONSISTING IN PROJECTING THIS LIQUID MIXTURE AT VERY HIGH SPEED WITH THE ASSISTANCE OF CENTRIFUGAL FORCE AND IN THE FORM OF A THIN HORIZONTAL SHEET IN THE UPPER PORTION OF A HOT-ATMOSPHERE DRYING TOWER, AND TO COLLECT THE POWDERED PRODUCT AT THE BOTTOM OF SAID TOWER, ACCORDING TO WHICH THE FINEST PARTICLES OF THE POWDERED PRODUCT ARE EXTRACTED BY SUCTION IN SAID TOWER BELOW THE HORIZONTAL SHEET OF LIQUID MIXTURE AND ARE PROJECTED AT VERY HIGH SPEED WITH THE ASSISTANCE OF CENTRIFUGAL FORCE AND IN THE FORM OF A THIN HORIZONTAL SHEET AT A LEVEL HIGHER THAN THAT OF SAID SHEET OF LIQUID MIXTURE AND A GAS IS BLOWN THROUGH THESE SHEETS IN ORDER TO BLOW THE SHEET OF THE FINEST PARTICLES OF THE POWDERED PRODUCT AGAINST THE SHEET OF LIQUID MIXTURE.
References Cited (Backward Citations)
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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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |