US3183606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device in press-roll sections for dewatering cellulose pulp webs
Assignee: Svenska Flaktfabriken AB
•
Filing: 1960-10-19
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Granted: 1965-05-18
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Expires: 1980-10-19
Abstract
No abstract record available.
Inventors
- 👤 Gustafsson Rune
- 👤 Wellmar Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:47
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A PRESS-ROLL SECTION FOR DEWATERING A WEB OF PULP MATERIAL, COMPRISING IN COMBINATION, A PLURALITY OF SETS OF PRESS ROLLS AND A DRYER ARRANGED DOWNSTREAM OF THE LAST SET OF PRESS ROLLS THROUGH WHICH THE WEB PASSES, A CLOSED CASING ARRANGED BETWEEN THE LAST SETS OF PRESS ROLLS AHEAD OF THE DRYER AND THROUGH WHICH THE WEB PASSES, WEB CONTACT HEATING MEANS AND TEMPERATURE AND HUMIDITY CONTROL MEANS WITHIN SAID CLOSED CASING FOR HEATING SAID WEB BY DIRECT HEAT APPLICATION WHILE RESTRICTING EVAPORATION OF MOISTURE THEREFROM, WHEREBY TO MAINTAIN A SATURATED AMBIENT ATMOPHERE ABOUT THE WEB IN SAID CLOSED CASING AT THE TEMPERATURE TO WHICH IT IS RAISED BY SAID CONTACT HEATING MEANS, SAID CONTACT HEATING MEANS COMPRISING A HEATING CYLINDER MEANS AROUND WHICH THE WEB PASSES, AND SAID TEMPERATURE AND HUMIDITY CONTROL MEANS WITHIN SAID CASING COMPRISING PRESSURE SPRAY NOZZLES WHICH DIRECT HOT MOIST GASEOUS FLUID INTO THE CASING TO MAINTAIN A HOT SATU-
Claim 2
Dependent Claim
156 words
IN A PRESS-ROLL SECTION FOR DEWATERING A WEB OF PULP MATERIAL, COMPRISING IN COMBINATION, A PLURALITY OF SETS OF PRESS ROLLS AND A DRYER ARRANGED DOWNSTREAM OF THE LAST SET OF PRESS ROLLS THROUGH WHICH THE WEB PASSES, A CLOSED CASING ARRANGED BETWEEN THE LAST SETS OF PRESS ROLLS AHEAD OF THE DRYER AND THROUGH WHICH THE WEB PASSES, WEB CONTACT HEATING MEANS AND TEMPERATURE AND HUMIDITY CONTROL MEANS WITHIN SAID CLOSED CASING FOR HEATING SAID WEB BY DIRECT HEAT APPLICATION WHILE RESTRICTING EVAPORATION OF MOISTURE THEREFROM, WHEREBY TO MAINTAIN A SATURATED AMBIENT ATMOPHERE ABOUT THE WEB IN SAID CLOSED CASING AT THE TEMPERATURE TO WHICH IT IS RAISED BY SAID CONTACT HEATING MEANS, SAID CONTACT HEATING MEANS COMPRISING A HEATING CYLINDER MEANS AROUND WHICH THE WEB PASSES, AND SAID TEMPERATURE AND HUMIDITY CONTROL MEANS WITHIN SAID CASING COMPRISING PRESSURE SPRAY NOZZLES WHICH DIRECT HOT MOIST GASEOUS FLUID INTO THE CASING TO MAINTAIN A HOT SATU-
References Cited (Backward Citations)
US1515614A
Cited
US2344686A
Cited
US2711591A
Cited
US2760410A
Cited
US2838982A
Cited
US2837830A
Cited
US3056213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |