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US3047453A Expired / Lapsed US ⏱️ 0.0 years remaining

Pulp handling system, method and apparatus

Assignee: Sprout Waldron and Co Inc
•
Filing: 1959-04-06
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Granted: 1962-07-31
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Expires: 1979-04-06
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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 17:52
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

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