US2811539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction and removal system
Assignee: Blaw Knox Co
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Filing: 1953-03-05
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Granted: 1957-10-29
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Expires: 1973-03-05
Abstract
No abstract record available.
Inventors
- 👤 George B Karnofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:16
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
161 words
IN A SOLVENT EXTRACTION AND REMOVAL SYSTEM, IN COMBINATION, A DESOLVENTIZING VESSEL, A PLURALITY OF TRAYS IN TIERED RELATION SURROUNDING A ROTATABLE SHAFT, SAID TRAYS HAVING EDGES OVER WHICH SOLIDS ARE DISCHARGED FOLLOWING MOVEMENT OVER SAID TRAYS, RAKE ARMS CONNECTED TO SAID SHAFT EXTENDING OVER SAID TRAYS IN EACH TIER THEREOF TO SWEEP SAID SOLIDS CIRCUMFERENTIALLY AND RADIALLY TOWARD THE TRAY EDGES, INTERMEDIATE LESSER DIAMETER ONES OF SAID TRAYS DEFINING A CASCADE ZONE AND HAVING A LESSER AREA TO ACCELERATE VAPORS RISING IN SAID VESSEL, AT LEAST ONE OF SAID TRAYS ABOVE THE BOTTOM OF SAID CASCADE ZONE HAVING A HEATING CHAMBER TO REGULATE THE CONDENSATION OF VAPOR IN SAID CASCADE ZONE, A VAPOR OUTLET PIPE CONNECTED TO SAID VESSEL ABOVE THE BOTTOM OF SAID CASCADE ZONE, AT LEAST CERTAIN OF SAID TRAYS BELOW THE BOTTOM OF SAID CASCADE ZONE HAVING A HEATING CHAMBER TO TOAST SOLIDS, AND MEANS FOR DISCHARGING DESOLVENTIZED AND TOASTED SOLIDS ADJACENT THE BOTTOM OF SAID VESSEL.
Claim 2
Dependent Claim
219 words
IN A SOLVENT EXTRACTION AND REMOVAL SYSTEM, IN COMBINATION, A CYLINDRICAL EXTRACTOR VESSEL HAVING A ROTOR THEREIN WITH A VERTICAL AXIS OF ROTATION, MEANS FOR FEEDING SOLID PARTICVLES TO SAID EXTRACTOR VESSEL TO BE EXTRACTED, MEANS FOR SUPPLYING SOLVENT SOLUTION TO AND DRAINING IT FROM SAID SOLID PARTICLES IN SAID EXTRACTOR VESSEL, MEANS FOR REMOVING DRAINED EXTRACTED SOLID PARTICLES THROUGH AN OPENING IN AND ADJACENT THE BOTTOM OF SAID EXTRACTOR VESSEL, A CYCLINDRICAL DESOLVENTIZING VESSEL HAVING ROTATABLE RAKING MEANS WITH A VERTICAL AXIS OF ROTATION, SAID VESSELS BEING MOUNTED IN IMMEDIATE SUPERPOSED COAXIAL RELATION, TRAY MEANS IN SAID DESOLVENTIZING VESSEL TO RECEIVE AND SUPPORT DRAINED EXTRACTED SOLID PARTICLES DISCHARGED FROM SAID EXTRATOR VESSEL, SAID TRAY MEANS BEING IN TIERED RELATION IN SAID DESOLVENTIZING VESSEL AND COOPERATING WITH SAID RAKING MEANS TO PROGESS SAID SOLID PARTICLES DOWNWARDLY THROUGH SAID DESOLVENTIZING VESSEL, CERTAIN OF SAID TRAY MEANS INTERMEDIATE THE TOP AND BOTTOM OF SAID EXTRACTOR VESSEL HAVING SMALLER OPENINGS COMMUNICATING WITH ADJOINING TRAY MEANS, AN OUTLET FOR VAPORR CONNECTED TO SAID DESOLVENTIZING VESSEL ADJACENT THE TOP THEREOF, MEANS FOR HEATING TRAY MEANS IN THE LOWER PORTION OF SAID DESOLVENTIZING VESSEL, MEANS FOR ROTATING SAID RAKING MEANS TO PROGESS SAID SOLID PARTICLES DOWNWARDLY OVER SAID TRAY MEANS, AND MEANS FOR DISCHARGING DESOLVENTIZED EXTRACTED PARTICLES FROM SAID DESOLVENTIZING VESSEL ADJACENT THE BOTTOM THEREOF.
Claim 3
Dependent Claim
130 words
IN A SOLVENT EXTRACTION AND REMOVAL SYSTEM, THE STEPS COMPRISING, IN COMBINATION, SOLVENT EXTRACTING SOLID PARTICLES IN AN EXTRACTION ZONE, DRAINING AND DISCHARGING EXTRACTED SOLID PARTICLES BY GRAVITY INTO A SOLIDS DESOLVENTIZING ZONE, INTRODUCING SOLVENT VAPOR FROM SAID EXTRACTION ZONE INTO SAID DESOLVENTIZING ZONE AT A RATE SUFFICIENT TO PROVIDE AZEOTROPIC PROPORTIONS OF SOLVENT FOR ALL WATER VAPOR WITHDRAWN FROM SAID DESOLVENTIZING ZONE, AGITATING AND MOVING SAID SOLID PARTICLES THROUGH SAID DESOLVENTIZING ZONE INCLUSIVE OF A CONSTRICTED PASSAGE INTERMEDIATE THE RESPECTIVE ENTRANCE AND DISCHARGE ENDS OF SAID DESOLVENTIZING ZONE CONTROLLABLY HEATING SAID SOLID PARTICLES IN RESPECTIVE PORTIONS OF SAID DESOLVENTIZING ZONE, WITHDRAWING VAPOR FROM SAID DESOLVENTIZING ZONE INTERMEDIATE SAID EXTRACTION ZONE AND SAID CONSTRICTED PASSAGE, AND DISCHARGING EXTRACTED AND DESOLVENTIZED SOLID PARTICLES FROM THE DISCHARGE END OF SAID DESOLVENTIZING ZONE.
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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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |