US2630376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple extraction apparatus
Assignee: University of California Berkeley
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Filing: 1949-11-15
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Granted: 1953-03-03
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Expires: 1969-11-15
Abstract
No abstract record available.
Inventors
- 👤 Rayburn W Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/0009; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0457
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
PLURAL STATE EXTRACTION APPARATUS COMPRISING A VERTICALLY EXTENDING CYLINDRICAL TANK HAVING A COVER DISPOSED ACROSS THE UPPER END THEREOF, AN INNER CYLINDRICAL TANK OF REDUCED DIAMETER PROJECTING UPWARDLY THROUGH A CORRESPONDING CENTRAL OPENING IN THE BOTTOM OF SAID FIRST TANK, THE OPEN UPPER END OF SAID INNER TANK TERMINATING SUBSTANTIALLY ABOVE THE BOTTOM OF SAID FIRST TANK WHILE THE BOTTOM OF SAID INNER TANK IS DISPOSED A SUBSTANTIAL DISTANCE BELOW THE BOTTOM OF SAID FIRST TANK, AND INTEGRAL FLUID AGITATING AND FLUID SUPPLYING MEANS FOR SAID TANKS INCLUDING ROTATABLE INLET TUBE MEANS EXTENDING FROM AN EXTERNAL SUPPLY VERTICALLY AND CENTRALLY THROUGH SAID COVER AND TERMINATING ADJACENT THE BOTTOM OF SAID INNER TANK, A CYLINDRICAL BAFFLE HAVING A HORIZONTALLY DISPOSED AND CENTRALLY APERTURED COVER PORTION THROUGH WHICH SAID TUBE INTEGRALLY EXTENDS, THE CYLINDRICAL WALL PORTION OF SAID BAFFLE BEING DISPOSED BETWEEN SAID FIRST TANK AND SAID INNER TANK AND THE LOWER MARGIN THEREOF TERMINATING BELOW THE UPPER END OF SAID INNER TANK, AND SUITABLE INGRESS AND EXIT CONNECTIONS TO SAID TANKS AND TUBE.
Claim 2
Dependent Claim
172 words
PLURAL STATE EXTRACTION APPARATUS COMPRISING A VERTICALLY EXTENDING CYLINDRICAL TANK HAVING A COVER DISPOSED ACROSS THE UPPER END THEREOF, AN INNER CYLINDRICAL TANK OF REDUCED DIAMETER PROJECTING UPWARDLY THROUGH A CORRESPONDING CENTRAL OPENING IN THE BOTTOM OF SAID FIRST TANK, THE OPEN UPPER END OF SAID INNER TANK TERMINATING SUBSTANTIALLY ABOVE THE BOTTOM OF SAID FIRST TANK WHILE THE BOTTOM OF SAID INNER TANK IS DISPOSED A SUBSTANTIAL DISTANCE BELOW THE BOTTOM OF SAID FIRST TANK, AND INTEGRAL FLUID AGITATING AND FLUID SUPPLYING MEANS FOR SAID TANKS INCLUDING ROTATABLE INLET TUBE MEANS EXTENDING FROM AN EXTERNAL SUPPLY VERTICALLY AND CENTRALLY THROUGH SAID COVER AND TERMINATING ADJACENT THE BOTTOM OF SAID INNER TANK, A CYLINDRICAL BAFFLE HAVING A HORIZONTALLY DISPOSED AND CENTRALLY APERTURED COVER PORTION THROUGH WHICH SAID TUBE INTEGRALLY EXTENDS, THE CYLINDRICAL WALL PORTION OF SAID BAFFLE BEING DISPOSED BETWEEN SAID FIRST TANK AND SAID INNER TANK AND THE LOWER MARGIN THEREOF TERMINATING BELOW THE UPPER END OF SAID INNER TANK, AND SUITABLE INGRESS AND EXIT CONNECTIONS TO SAID TANKS AND TUBE.
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |