US3099698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method to increase the efficiency of a furnace regenerator, particularly for open-hearth furnaces, and to decrease the piling temperature
Assignee: Societa Finanziaria Siderurgica "Finsider" per Azioni Istituto Siderurgico Genoa Cornigliano
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Filing: 1961-03-27
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Granted: 1963-07-30
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Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 Ramacciotti Aldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:12
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/04; F; F28; F28D; F28D17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD OF INCREASING THE EFFICIENCY OF A FURNANCE COMPRISING THE STEPS OF BURNING A FUEL IN A FURNANCE HEARTH, HEATING THE REFRACTORY MATERIAL OF A GENERATOR BY PASSING THE COMBUSTION GASES IN ONE DIRCTION THROUGH THE REGENERATOR, FORCING ATMOSPHERIC COMBUSTION AIR FROM A POINT OF ENTRY THROUGH SAID REGNERATOR IN THE OPPOSITE DIRECTION AFTER THE REGENERATOR IS HEATED, AND INTRODUCING INTO THE COMBUSTION AIR AT A LOCATION NEAR SAID POINT OF ENTERY A FLUID AT LEAST PARTIALLY OPAQUE TO THERMAL RADIATION IN THE PROPORTION OF 5 TO 80 GRAMS PER NORMAL CUBIC METER ACCORDING TO THE HUMIDITY OF THE ATMOSPHERE AIR.
Claim 2
Independent Claim
102 words
A METHOD OF INCREASING THE EFFICIENCY OF A FURNANCE COMPRISING THE STEPS OF BURNING A FUEL IN A FURNANCE HEARTH, HEATING THE REFRACTORY MATERIAL OF A GENERATOR BY PASSING THE COMBUSTION GASES IN ONE DIRCTION THROUGH THE REGENERATOR, FORCING ATMOSPHERIC COMBUSTION AIR FROM A POINT OF ENTRY THROUGH SAID REGNERATOR IN THE OPPOSITE DIRECTION AFTER THE REGENERATOR IS HEATED, AND INTRODUCING INTO THE COMBUSTION AIR AT A LOCATION NEAR SAID POINT OF ENTERY A FLUID AT LEAST PARTIALLY OPAQUE TO THERMAL RADIATION IN THE PROPORTION OF 5 TO 80 GRAMS PER NORMAL CUBIC METER ACCORDING TO THE HUMIDITY OF THE ATMOSPHERE AIR.
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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |