Patent US2671017A successfully refreshed from Google Patents.
US2671017A
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Method of charging a blast furnace
Assignee: Reserve Mining Co
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Filing: 1949-09-24
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Granted: 1954-03-02
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Expires: 1969-09-24
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Mccutcheon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:30
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; C21B7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
THE METHOD OF CHARGING ORE, COKE AND FLUX MATERIAL INTO A BLAST FRUNACE COMPRISING, SEPARATING THE COKE INTO PORTIONS OF FINE PARTICLES AND RELATIVELY COARSE PARTICLES, ESTABLISHING A FIRST ZONE SUBSTANTIALLY FREE OF UPWARDLY RISING CURRENTS OF GAS WITHIN THE UPPER PORTION OF THE FURNACE IN COMMUNICATION WITH THE CHARGING OPENING OF THE FURNACE AND SPACED INWARDLY FROM THE SIDE WALLS OF SAID FURNACE WITH THE INTERIOR OF THE FURNACE BEING IN COMMUNICATION WITH THE SAID ZONE ONLY AT THE LOWER END OF THE LATTER, ESTABLISHING A SECOND SUBSTANTIALLY GAS FREE ZONE INTERIORLY OF THE FIRST ZONE AND COMMUNICATING WITH THE CHARGING OPENING AND THE INTERIOR OF THE FURNACE, THE LOWER ENDS OF SAID ZONES BEING A SUBSTANTIALLY THE SAME ELEVATION WITHIN THE FURNACE AND THE CROSS-SECTIONAL AREA OF SAID SECOND ZONE BEING IN THE ORDER OF 5% TO 25% OF THE CROSS-SECTIONAL AREA OF THE INTERIOR OF THE FURNACE ADJACENT THE LOWER END OF SAID ZONES, WITHDRAWING THE GASES FROM SAID
Claim 2
Independent Claim
162 words
THE METHOD OF CHARGING ORE, COKE AND FLUX MATERIAL INTO A BLAST FRUNACE COMPRISING, SEPARATING THE COKE INTO PORTIONS OF FINE PARTICLES AND RELATIVELY COARSE PARTICLES, ESTABLISHING A FIRST ZONE SUBSTANTIALLY FREE OF UPWARDLY RISING CURRENTS OF GAS WITHIN THE UPPER PORTION OF THE FURNACE IN COMMUNICATION WITH THE CHARGING OPENING OF THE FURNACE AND SPACED INWARDLY FROM THE SIDE WALLS OF SAID FURNACE WITH THE INTERIOR OF THE FURNACE BEING IN COMMUNICATION WITH THE SAID ZONE ONLY AT THE LOWER END OF THE LATTER, ESTABLISHING A SECOND SUBSTANTIALLY GAS FREE ZONE INTERIORLY OF THE FIRST ZONE AND COMMUNICATING WITH THE CHARGING OPENING AND THE INTERIOR OF THE FURNACE, THE LOWER ENDS OF SAID ZONES BEING A SUBSTANTIALLY THE SAME ELEVATION WITHIN THE FURNACE AND THE CROSS-SECTIONAL AREA OF SAID SECOND ZONE BEING IN THE ORDER OF 5% TO 25% OF THE CROSS-SECTIONAL AREA OF THE INTERIOR OF THE FURNACE ADJACENT THE LOWER END OF SAID ZONES, WITHDRAWING THE GASES FROM SAID
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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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |