Patent US2606820A successfully refreshed from Google Patents.
US2606820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for precipitation of solids from solutions and the like
Assignee: Dorr Co
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Filing: 1948-07-03
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Granted: 1952-08-12
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Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Harms Viggo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:01
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/14; C01F7/144; C01F7/147; B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00105; B01J2219/0011; B01J2219/00114; B01J2219/00121; B01J2219/00159; Y; Y10; Y10S; Y10S159/00; Y10S159/25; Y10S159/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
290 words
AN APPARATUS OF THE CLASS DESCRIBED COMPRISING A TANK HAVING A BOTTOM WITH MARGINAL WALL RISING THEREFROM AND EQUIPPED WITH EFFLUENT COLLECTING LAUNDER AT THE UPPER INTERIOR PORTION THEREOF AND PROVIDING AN OVERFLOW WEIR ELEMENT DETERMINING THE NORMAL OPERATIVES SURFACE LEVEL OF SUPERNATANT LIQUID WITHIN THE TANK AND HAVING OUTFLOW PASSAGE MEANS LEADING TO THE EXTERIOR OF THE TANK; A SKIRT EXTENDING FROM AN ELEMENT HIGHER THAN THAT OF SAID OVERFLOW WEIR ELEMENT INTO THE LIQUID HOLDING PORTION OF THE TANK AND TERMINATING AT ELEVATION FORM SUBSTANTIALLY LOWER THAN THAT OF THE OVERFLOW WEIR ELEMENT AND SERVING AS AN OPEN BOTTOM CENTRAL FEEDWELL SECTION FOR RECEIVING FEED MATERIAL SUPPLIED THEREINTO FOR TREATMENT WITHIN THE TANK, WHICH SKIRT IS OF LESS DIAMETER THAN THAT OF THE INTERIOR OF THE TANK AND PROVIDES OUTSIDE THEREOF AND BETWEEN IT AND THE UPPER INTERIOR PORTION OF THE TANK A SURROUNDING SUPERNATANT LIQUID RECEIVING SECTION WHEREIN THE EFFLUENT COLLECTING LAUNDER IS LOCATED; WITHIN SAID SKIRT AN OPEN TOP TROUGH OF WHICH THE UPPER EDGES OF SAID TROUGH ARE HIGHER THAN THAT OF SAID OVERFLOW WEIRS AND CONDUCTING MEANS LEADING THEREFROM TO A REGION OUTSIDE OF THE TANK; MEANS FOR PASSING INCOMING FEED MATERIAL FOR TREATMENT WITHIN THE TANK AND FOR DELIVERING SAID INCOMING MATERIAL INTO A REGION WITHIN THE SKIRT WHILE AVOIDING PASSING OF THE INCOMING FEED MATERIAL INTO SAID OPEN TOP TROUGH; MEANS FOR TRANSFERRING LIQUID SOLIDS INDENTIFIED AS PULP FROM THE LOWER INTERIOR PORTION OF THE TANK AND FOR DELIVERING A QUANTITY OF THE TRANSFERRED PULP INTO THE SKIRT AT A LOCALITY OUTSIDE OF THE TROUGH AND ALSO FOR DELIVERING A QUANTITY OF THE TRANSFERRED PULP INTO SAID TROUGH; AND A CONDUIT LEADING FROM SAID TROUGH TO A REGION OUTSIDE OF THE TANK.
Claim 2
Independent Claim
290 words
AN APPARATUS OF THE CLASS DESCRIBED COMPRISING A TANK HAVING A BOTTOM WITH MARGINAL WALL RISING THEREFROM AND EQUIPPED WITH EFFLUENT COLLECTING LAUNDER AT THE UPPER INTERIOR PORTION THEREOF AND PROVIDING AN OVERFLOW WEIR ELEMENT DETERMINING THE NORMAL OPERATIVES SURFACE LEVEL OF SUPERNATANT LIQUID WITHIN THE TANK AND HAVING OUTFLOW PASSAGE MEANS LEADING TO THE EXTERIOR OF THE TANK; A SKIRT EXTENDING FROM AN ELEMENT HIGHER THAN THAT OF SAID OVERFLOW WEIR ELEMENT INTO THE LIQUID HOLDING PORTION OF THE TANK AND TERMINATING AT ELEVATION FORM SUBSTANTIALLY LOWER THAN THAT OF THE OVERFLOW WEIR ELEMENT AND SERVING AS AN OPEN BOTTOM CENTRAL FEEDWELL SECTION FOR RECEIVING FEED MATERIAL SUPPLIED THEREINTO FOR TREATMENT WITHIN THE TANK, WHICH SKIRT IS OF LESS DIAMETER THAN THAT OF THE INTERIOR OF THE TANK AND PROVIDES OUTSIDE THEREOF AND BETWEEN IT AND THE UPPER INTERIOR PORTION OF THE TANK A SURROUNDING SUPERNATANT LIQUID RECEIVING SECTION WHEREIN THE EFFLUENT COLLECTING LAUNDER IS LOCATED; WITHIN SAID SKIRT AN OPEN TOP TROUGH OF WHICH THE UPPER EDGES OF SAID TROUGH ARE HIGHER THAN THAT OF SAID OVERFLOW WEIRS AND CONDUCTING MEANS LEADING THEREFROM TO A REGION OUTSIDE OF THE TANK; MEANS FOR PASSING INCOMING FEED MATERIAL FOR TREATMENT WITHIN THE TANK AND FOR DELIVERING SAID INCOMING MATERIAL INTO A REGION WITHIN THE SKIRT WHILE AVOIDING PASSING OF THE INCOMING FEED MATERIAL INTO SAID OPEN TOP TROUGH; MEANS FOR TRANSFERRING LIQUID SOLIDS INDENTIFIED AS PULP FROM THE LOWER INTERIOR PORTION OF THE TANK AND FOR DELIVERING A QUANTITY OF THE TRANSFERRED PULP INTO THE SKIRT AT A LOCALITY OUTSIDE OF THE TROUGH AND ALSO FOR DELIVERING A QUANTITY OF THE TRANSFERRED PULP INTO SAID TROUGH; AND A CONDUIT LEADING FROM SAID TROUGH TO A REGION OUTSIDE OF THE TANK.
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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |