Patent US1829899A successfully refreshed from Google Patents.
Patent US2988223A successfully refreshed from Google Patents.
US2988223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for removal of resin and/or dewatering of pulp
Assignee: Celleco AB
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Filing: 1959-02-05
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Granted: 1961-06-13
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Expires: 1979-02-05
Abstract
No abstract record available.
Inventors
- 👤 Janson Bengt Gotthard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:46
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
APPARATUS FOR REMOVAL OF RESIN AND/OR FOR DEWATERING OF AN AQUEOUS PULP SLUDE OF CELLULOSE FIBRES, COMPRISING IN COMBINATION A MIDDLE CHAMBER AND TWO OUTER HORIZONTALLY ELONGATED CHAMBERS EXTENDING SIDE BY SIDE, SAID MIDDLE CHAMBER EXTENDING BETWEEN SAID OUTER CHAMBERS, TWO OPPOSITE SIDE WALLS SEPARATING SAID MIDDLE CHAMBER FROM SAID OUTER CHAMBERS, SAID TWO OPPOSITE SIDE WALLS SUBSTANTIALLY CONSTITUTING STRAINER WALLS, A PLURALITY OF SPRAY NOZZLES IN EACH OF SAID OUTER CHAMBERS, EACH OF SAID NOZZLES BEING FORMED TO FINELY DIVIDE AND DISTRIBUTE LIQUID MATERIAL SUPPLIED TO SAID NOZZLE IN THE FORM OF A WIDELY DIVERGING CONICAL SPRAY, SAID NOZZLES BEING ARRANGED SIDE BY SIDE IN AT LEAST ONE PRINCIPALLY HORIZONTAL ROW AND BEING POSITIONED AT A DISTANCE FROM AND DIRECTED TOWARDS THE RESPECTIVE STRAINER WALL, MEANS TO SUPPLY PULP SLUDGE TO BE TREATED TO SAID SPRAY NOZZLES, AND EACH OF SAID CHAMBERS BEING FORMED WITH BOTTOM OUTLETS THEREFOR.
Claim 2
Dependent Claim
149 words
APPARATUS FOR REMOVAL OF RESIN AND/OR FOR DEWATERING OF AN AQUEOUS PULP SLUDE OF CELLULOSE FIBRES, COMPRISING IN COMBINATION A MIDDLE CHAMBER AND TWO OUTER HORIZONTALLY ELONGATED CHAMBERS EXTENDING SIDE BY SIDE, SAID MIDDLE CHAMBER EXTENDING BETWEEN SAID OUTER CHAMBERS, TWO OPPOSITE SIDE WALLS SEPARATING SAID MIDDLE CHAMBER FROM SAID OUTER CHAMBERS, SAID TWO OPPOSITE SIDE WALLS SUBSTANTIALLY CONSTITUTING STRAINER WALLS, A PLURALITY OF SPRAY NOZZLES IN EACH OF SAID OUTER CHAMBERS, EACH OF SAID NOZZLES BEING FORMED TO FINELY DIVIDE AND DISTRIBUTE LIQUID MATERIAL SUPPLIED TO SAID NOZZLE IN THE FORM OF A WIDELY DIVERGING CONICAL SPRAY, SAID NOZZLES BEING ARRANGED SIDE BY SIDE IN AT LEAST ONE PRINCIPALLY HORIZONTAL ROW AND BEING POSITIONED AT A DISTANCE FROM AND DIRECTED TOWARDS THE RESPECTIVE STRAINER WALL, MEANS TO SUPPLY PULP SLUDGE TO BE TREATED TO SAID SPRAY NOZZLES, AND EACH OF SAID CHAMBERS BEING FORMED WITH BOTTOM OUTLETS THEREFOR.
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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |