Patent US2970901A successfully refreshed from Google Patents.
US2970901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for heating and humidifying blast for metallurgical furnaces
Assignee: Beazer East Inc
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Filing: 1959-10-28
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Granted: 1961-02-07
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Expires: 1979-10-28
Abstract
No abstract record available.
Inventors
- 👤 Owen R Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:55
CPC Classifications
C; C21; C21B; C21B5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS OF HEATING AND HUMIDIFYING THE BLAST FOR A METALLURIGICAL BLAST FURNACE, WHICH COMPRISES: BLOWING COLD BLAST AIR FOR THE BLAST OF THE FURNACE THROUGH A PREHEATING MEDIUM THEREFOR AND THEREBY PREHEATING THE BLAST FOR THE FURNACE, THEREAFTER AUGMENTING THE HEAT OF THE BLAST FROM SAID MEDIUM BY BURNING COMBUSTIBLE FUEL WITH PART OF THE TOTAL AIR OF THE BLAST DIRECTLY IN PREHEATED BLAST, AND THEREAFTER DELIVERING THE HEAT AUGMENTED HOT BLAST INTO THE HEARTH IN THE BLAST FURNACE WHILE CHARGED WITH WATER VAPOR TO A PREDETERMINED CONSTANCY OF HUMIDITY, THE IMPROVEMENT COMPRISING THE STEPS OF, EFFECTING SAID AUGMENTING OF THE HEAT OF THE BLAST BY BURNING A
Claim 2
Dependent Claim
110 words
IN A PROCESS OF HEATING AND HUMIDIFYING THE BLAST FOR A METALLURIGICAL BLAST FURNACE, WHICH COMPRISES: BLOWING COLD BLAST AIR FOR THE BLAST OF THE FURNACE THROUGH A PREHEATING MEDIUM THEREFOR AND THEREBY PREHEATING THE BLAST FOR THE FURNACE, THEREAFTER AUGMENTING THE HEAT OF THE BLAST FROM SAID MEDIUM BY BURNING COMBUSTIBLE FUEL WITH PART OF THE TOTAL AIR OF THE BLAST DIRECTLY IN PREHEATED BLAST, AND THEREAFTER DELIVERING THE HEAT AUGMENTED HOT BLAST INTO THE HEARTH IN THE BLAST FURNACE WHILE CHARGED WITH WATER VAPOR TO A PREDETERMINED CONSTANCY OF HUMIDITY, THE IMPROVEMENT COMPRISING THE STEPS OF, EFFECTING SAID AUGMENTING OF THE HEAT OF THE BLAST BY BURNING A
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |