US3263338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash drying system for fine coal
Assignee: Combustion Engineering Inc
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Filing: 1963-09-26
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Granted: 1966-08-02
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Charles W Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:58
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/10; F26B17/101; F26B17/103; B; B04; B04C; B04C9/00; B04C2009/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A DRYING SYSTEM FOR COAL COMPRISING A SUBSTANTIALLY VERTICAL DUCT, HAVING A LOWER INLET END AND AN UPPER OUTLET END, A SOURCE OF HOT GASES CONNECTED TO THE INLET END, MEANS FOR MAINTAINING A HIGH VELOCITY FLOW OF THE HOT GASES THROUGH SAID DUCT, MEANS FOR INTRODUCING CRUSHED WET COAL INTO SAID DUCT EVENLY ABOUT THE ENTIRE PERIPHERY THEREOF AT A LOCATION ABOVE THE INLET END, AND MEANS FOR SEPARATING THE DRIED COAL PARTICLES LEAVING THE OUTLET END FROM THE GASES, SAID MEANS FOR INTRODUCING WET CRUSHED COAL INTO THE DUCT AROUND THE ENTIRE PERIPHERY THEREOF COMPRISES A TABLE FEEDER WHICH COMPLETELY SURROUNDS THE DUCT, THE TABLE FEEDER BEING MADE UP OF WALL MEANS FORMING A SERIES OF POCKETS, AND A HELICAL DISCHARGE OPENING IN THE DUCT ADJACENT SUCH POCKETS, SAID HELICAL OPENING EXTENDING THROUGH A 360* ARC, THE UPPER PORTIONS OF THE POCKETS BEING AT THE SAME HEIGHT AS THE HIGHEST PORTION OF THE HELICAL OPENING, AND THE LOWEST PORTION OF THE POCKETS BEING AT THE SAME HEIGHT AS THE LOWER PORTION OF THE HELICAL OPENING, AND MEANS FOR CONTINUOUSLY ROTATING THE TABLE FEEDER.
Claim 2
Dependent Claim
185 words
A DRYING SYSTEM FOR COAL COMPRISING A SUBSTANTIALLY VERTICAL DUCT, HAVING A LOWER INLET END AND AN UPPER OUTLET END, A SOURCE OF HOT GASES CONNECTED TO THE INLET END, MEANS FOR MAINTAINING A HIGH VELOCITY FLOW OF THE HOT GASES THROUGH SAID DUCT, MEANS FOR INTRODUCING CRUSHED WET COAL INTO SAID DUCT EVENLY ABOUT THE ENTIRE PERIPHERY THEREOF AT A LOCATION ABOVE THE INLET END, AND MEANS FOR SEPARATING THE DRIED COAL PARTICLES LEAVING THE OUTLET END FROM THE GASES, SAID MEANS FOR INTRODUCING WET CRUSHED COAL INTO THE DUCT AROUND THE ENTIRE PERIPHERY THEREOF COMPRISES A TABLE FEEDER WHICH COMPLETELY SURROUNDS THE DUCT, THE TABLE FEEDER BEING MADE UP OF WALL MEANS FORMING A SERIES OF POCKETS, AND A HELICAL DISCHARGE OPENING IN THE DUCT ADJACENT SUCH POCKETS, SAID HELICAL OPENING EXTENDING THROUGH A 360* ARC, THE UPPER PORTIONS OF THE POCKETS BEING AT THE SAME HEIGHT AS THE HIGHEST PORTION OF THE HELICAL OPENING, AND THE LOWEST PORTION OF THE POCKETS BEING AT THE SAME HEIGHT AS THE LOWER PORTION OF THE HELICAL OPENING, AND MEANS FOR CONTINUOUSLY ROTATING THE TABLE FEEDER.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |