US3253906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slagging grate furnace and method of operation thereof
Assignee: Individual
•
Filing: 1961-12-11
•
Granted: 1966-05-31
•
Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Secord Campbell Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/02; C; C10; C10J; C10J3/00; C10J3/02; C10J3/06; C10J3/08; C10J3/20; C10J3/34; C10J3/36; C10J3/72; C10J3/74; C10J3/76; C10J3/78; C10J3/82; C10J3/84; C10J3/845; C21; C21B; C21B5/00; C21B5/001; C21B7/00; C21B7/02; C22; C22B; C22B19/00; C22B19/34; C22B19/36; C22B5/00; C22B5/02; C22B5/04; C22B5/06; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0969; C10J2300/0973; C10J2300/0976; Y; Y10; Y10S; Y10S48/00; Y10S48/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A METHOD OF OPERATING A FURNACE IN WHICH COMBUSTION OF SOLID LUMP MATERIALS IS CARRIED OUT IN A BED SUPPORTED ON A COOLED GRATE COMPRISING HOLLOW MEMBERS THROUGH WHICH COOLING MEDIA IS PASSED, WHICH METHOD COMPRISES SUPPLYING OXYGEN-CONTAINING GAS FOR THE COMBUSTION OF THE SOLID MATERIAL FORM BELOW THE GRATE AND THROUGH SUBSTANTIALLY THE WHOLE OF THE GRATE AND CROSSSECTION OF THE BED OF LUMP MATERIAL AT SUCH A CONCENTRATION AND RATE THAT THE TEMPERATURE IN THE REACTION ZONE IS SUFFICIENTLY HIGH TO KEEP SLAG AND OTHER MOLTEN PRODUCTS WHICH ARE PRODUCED DURING THE COMBUSTION IN A FREE FLOWING LIQUID STATE SO THAT SLAG AND OTHER MOLTEN PRODUCTS PASS THROUGH THE GRATE IN A MOLTEN CONDITION, THE SPACE BELOW THE GRATE BEING HEATED BY BURNING A FUEL THEREIN TO MAINTAIN SAID SPACE AT A TEMPERATURE SUFFICIENT TO ENSURE THAT SOLIDIFICATION OF THE SLAG AND OTHER MOLTEN PRODUCTS DOES NOT OCCUR ON THE UNDERSIDE OF THE GRATE TO SUCH AN EXTENT AS TO SUBSTANTIALLY INTERFERE WITH PASSAGE OF THE OXYGEN-
Claim 2
Independent Claim
169 words
A METHOD OF OPERATING A FURNACE IN WHICH COMBUSTION OF SOLID LUMP MATERIALS IS CARRIED OUT IN A BED SUPPORTED ON A COOLED GRATE COMPRISING HOLLOW MEMBERS THROUGH WHICH COOLING MEDIA IS PASSED, WHICH METHOD COMPRISES SUPPLYING OXYGEN-CONTAINING GAS FOR THE COMBUSTION OF THE SOLID MATERIAL FORM BELOW THE GRATE AND THROUGH SUBSTANTIALLY THE WHOLE OF THE GRATE AND CROSSSECTION OF THE BED OF LUMP MATERIAL AT SUCH A CONCENTRATION AND RATE THAT THE TEMPERATURE IN THE REACTION ZONE IS SUFFICIENTLY HIGH TO KEEP SLAG AND OTHER MOLTEN PRODUCTS WHICH ARE PRODUCED DURING THE COMBUSTION IN A FREE FLOWING LIQUID STATE SO THAT SLAG AND OTHER MOLTEN PRODUCTS PASS THROUGH THE GRATE IN A MOLTEN CONDITION, THE SPACE BELOW THE GRATE BEING HEATED BY BURNING A FUEL THEREIN TO MAINTAIN SAID SPACE AT A TEMPERATURE SUFFICIENT TO ENSURE THAT SOLIDIFICATION OF THE SLAG AND OTHER MOLTEN PRODUCTS DOES NOT OCCUR ON THE UNDERSIDE OF THE GRATE TO SUCH AN EXTENT AS TO SUBSTANTIALLY INTERFERE WITH PASSAGE OF THE OXYGEN-
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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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |