US3047453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulp handling system, method and apparatus
Assignee: Sprout Waldron and Co Inc
•
Filing: 1959-04-06
•
Granted: 1962-07-31
•
Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Raymond E Shook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:34
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A METHOD FOR HANDLING PAPER PULP PRODUCED AS A WATER SLURRY OF PULP FIBERS IN A PULPING PROCESS FOR TRANSPORTATION AND STORAGE BETWEEN A PULP MILL AND A PAPER MILL, THE STEPS WHICH COMPRISE DEWATERING SAID PULP SLURRY UNDER PRESSURE, INTRODUCING SAID DEWATERED PULP TO A PELLET MILL FOR MECHANICALLY WORKING AND PELLETING SAID PULP FIBERS, SAID DEWATERING INCREASING THE CONSISTENCY OF SAID SLURRY TO A DEGREE PERMITTING PALLETING, SUBJECTING SAID PULP FIBERS IN SAID PELLETS MILL TO MECHANICAL WORKING BY A ROLLING PRESSURE AGAINST A HARD SURFACE, EXTRUDING SAID WORKED PULP UNDER HIGH PRESSURE THROUGH A RESTRICTED COMPACTING EXTRUSION PASSAGE IN SAID PELLET MILL THUS FORMING COMPACTED AND SELF-SUSTAINING PELLETS OF SAID DEWATERED AND WORKED PULP FIBERS, AND DRYING SAID PELLETS TO A SUBSTANTIALLY FREE FLOWING CONSISTENCY FOR BULK STORAGE AND TRANS PORTATION AND HANDLING THEREOF.
Claim 2
Dependent Claim
138 words
IN A METHOD FOR HANDLING PAPER PULP PRODUCED AS A WATER SLURRY OF PULP FIBERS IN A PULPING PROCESS FOR TRANSPORTATION AND STORAGE BETWEEN A PULP MILL AND A PAPER MILL, THE STEPS WHICH COMPRISE DEWATERING SAID PULP SLURRY UNDER PRESSURE, INTRODUCING SAID DEWATERED PULP TO A PELLET MILL FOR MECHANICALLY WORKING AND PELLETING SAID PULP FIBERS, SAID DEWATERING INCREASING THE CONSISTENCY OF SAID SLURRY TO A DEGREE PERMITTING PALLETING, SUBJECTING SAID PULP FIBERS IN SAID PELLETS MILL TO MECHANICAL WORKING BY A ROLLING PRESSURE AGAINST A HARD SURFACE, EXTRUDING SAID WORKED PULP UNDER HIGH PRESSURE THROUGH A RESTRICTED COMPACTING EXTRUSION PASSAGE IN SAID PELLET MILL THUS FORMING COMPACTED AND SELF-SUSTAINING PELLETS OF SAID DEWATERED AND WORKED PULP FIBERS, AND DRYING SAID PELLETS TO A SUBSTANTIALLY FREE FLOWING CONSISTENCY FOR BULK STORAGE AND TRANS PORTATION AND HANDLING THEREOF.
References Cited (Backward Citations)
US1986907A
Cited
US2059486A
Cited
US2182274A
Cited
US2516384A
Cited
US2628540A
Cited
US2543928A
Cited
US2525135A
Cited
US2739895A
Cited
US2847702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |