US3339286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for drying wet pulverulent material in a gaseous path
Assignee: Fluid Energy Processing and Equipment Co
•
Filing: 1965-03-11
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Granted: 1967-09-05
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Expires: 1985-03-11
Abstract
No abstract record available.
Inventors
- 👤 Nicholas N Stephanoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:38
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/10; F26B17/101; F26B17/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD OF DRYING WET PULVERULENT MATERIAL TO RETAIN SAID MATERIAL IN COLLOIDAL PARTICLE SIZE WHICH COMPRISES ATOMIZING SAID MATERIAL IN A FLUID VORTEX, SPRAYING THE PARTICLES OF ATOMIZED MATERIAL AND FLUID THROUGH A STRAIGHT FLASH-DRYING PATH WHILE HEATING SAID PARTICLES AND FLUID TO A TEMPERATURE THAT IS SUFFICIENTLY HIGH TO SUBSTANTIALLY EVAPORATE ANY LIQUID ADHERING TO SAID PARTICLES BEFORE SAID PARTICLES REACH THE END OF SAID STRAIGHT PATH, THEN CENTRIFUGALLY CIRCULATING SAID PARTICLES AND FLUID THROUGH A SEPARATION AREA WHERE THE MOST DRY, LIGHTER PARTICLES ARE CENTRIFUGALLY REMOVED, AND THEN CONTINUING THE CIRCULATION OF THE LESS DRY, HEAVIER PARTICLES IN A CENTRIFUGAL PATH THAT IS SPACED FROM THE FLASH-DRYING PATH.
Claim 2
Independent Claim
111 words
A METHOD OF DRYING WET PULVERULENT MATERIAL TO RETAIN SAID MATERIAL IN COLLOIDAL PARTICLE SIZE WHICH COMPRISES ATOMIZING SAID MATERIAL IN A FLUID VORTEX, SPRAYING THE PARTICLES OF ATOMIZED MATERIAL AND FLUID THROUGH A STRAIGHT FLASH-DRYING PATH WHILE HEATING SAID PARTICLES AND FLUID TO A TEMPERATURE THAT IS SUFFICIENTLY HIGH TO SUBSTANTIALLY EVAPORATE ANY LIQUID ADHERING TO SAID PARTICLES BEFORE SAID PARTICLES REACH THE END OF SAID STRAIGHT PATH, THEN CENTRIFUGALLY CIRCULATING SAID PARTICLES AND FLUID THROUGH A SEPARATION AREA WHERE THE MOST DRY, LIGHTER PARTICLES ARE CENTRIFUGALLY REMOVED, AND THEN CONTINUING THE CIRCULATION OF THE LESS DRY, HEAVIER PARTICLES IN A CENTRIFUGAL PATH THAT IS SPACED FROM THE FLASH-DRYING PATH.
References Cited (Backward Citations)
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US2284746A
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US2413420A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |