Patent US2684288A successfully refreshed from Google Patents.
US2684288A
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Solvent extraction apparatus with automatic controls
Assignee: Extraction Continue de Smet SA
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Filing: 1949-12-19
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Granted: 1954-07-20
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Expires: 1969-12-19
Abstract
No abstract record available.
Inventors
- 👤 Smet Jean Albert De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:38
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/023; C; C11; C11B; C11B1/00; C11B1/10; C11B1/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN AN APPARATUS FOR THE CONTINUOUS COUNTERCURRENT EXTRACTION OF A LAYER OF PULVERIZED OLEAGINOUS GRAINS CONTINUOUSLY FED FROM A SUPPLY HOPPER ONTO A POROUS ENDLESS CONVEYOR AND TREATED WITH AN OIL EXTRACTING SOLVENT FROM A SPRINKLING MEANS ABOVE SAID CONVEYOR AND PROVIDED WITH COLLECTING MEANS BELOW SAID CONVEYOR TO COLLECT THE SOLVENT DRAINED FROM THE CONVEYOR, THAT IMPROVEMENT COMPRISING ELECTRICALLY OPERATED DRIVING MEANS INCLUDING ELECTRICAL SWITCHING MEANS, RAPIDLY ROTATING DRIVING MEANS AND SLOWLY ROTATING DRIVING MEANS TO DRIVE SAID CONVEYOR AT A SPEED IN ACCORDANCE WITH THE AMOUNT OF PULVERIZED GRAIN FED TO SAID CONVEYOR FROM SAID HOPPER, A PRESSURE RESPONSIVE FLEXIBLE MEMBRANE ATTACHED BELOW SAID HOPPER WHICH IS DISPLACED IN ACCORDANCE WITH THE WEIGHT OF THE GRAMS IN SAID HOPPER AND FED BY SAID HOPPER TO SAID CONVEYOR, SAID MEMBRANE OPERATIVELY CONNECTED TO SAID SWITCH-
Claim 2
Dependent Claim
136 words
IN AN APPARATUS FOR THE CONTINUOUS COUNTERCURRENT EXTRACTION OF A LAYER OF PULVERIZED OLEAGINOUS GRAINS CONTINUOUSLY FED FROM A SUPPLY HOPPER ONTO A POROUS ENDLESS CONVEYOR AND TREATED WITH AN OIL EXTRACTING SOLVENT FROM A SPRINKLING MEANS ABOVE SAID CONVEYOR AND PROVIDED WITH COLLECTING MEANS BELOW SAID CONVEYOR TO COLLECT THE SOLVENT DRAINED FROM THE CONVEYOR, THAT IMPROVEMENT COMPRISING ELECTRICALLY OPERATED DRIVING MEANS INCLUDING ELECTRICAL SWITCHING MEANS, RAPIDLY ROTATING DRIVING MEANS AND SLOWLY ROTATING DRIVING MEANS TO DRIVE SAID CONVEYOR AT A SPEED IN ACCORDANCE WITH THE AMOUNT OF PULVERIZED GRAIN FED TO SAID CONVEYOR FROM SAID HOPPER, A PRESSURE RESPONSIVE FLEXIBLE MEMBRANE ATTACHED BELOW SAID HOPPER WHICH IS DISPLACED IN ACCORDANCE WITH THE WEIGHT OF THE GRAMS IN SAID HOPPER AND FED BY SAID HOPPER TO SAID CONVEYOR, SAID MEMBRANE OPERATIVELY CONNECTED TO SAID SWITCH-
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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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |