Patent US5301768A successfully refreshed from Google Patents.
Patent US3076607A successfully refreshed from Google Patents.
US3076607A
Expired / Lapsed
US
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Hydrocarbon injector for blastfurnaces
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1961-11-24
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Granted: 1963-02-05
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Cordier Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:51
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/001; F; F23; F23D; F23D11/00; F23D11/10; Y; Y10; Y10S; Y10S239/00; Y10S239/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A HYDROCARBON INJECTOR FOR BLAST FURNACES, WHICH COMPRISES AN OUTER HEAT RESISTING TUBE, AN INTERMEDIATE TUBE CO-AXIAL THEREWITH FOR THE SUPPLY OF ATOMIZING GAS, A HEAT RESISTING CYLINDRO-CONICAL HEAD TERMINATING SAID INTERMEDIATE TUBE AND HAVING AN OUTLET ORIFICE THE LENGTH THEREOF BEING SUBSTANTIALLY EQUAL TO ITS DIAMETER, A CENTRAL COAXIAL TUBE FOR THE SUPPLY OF AT LEAST A LIQUID HYDROCARBON FUEL, A CYLINDRICAL HEAD TERMINATING SAID CENTRAL TUBE AND HAVING A CENTRAL PASSAGE FOR THE FLOW OF FUEL ADAPTED TO SLIDE FREELY INTO THE CYLINDRO-CONICAL HEAD, THE OUTLET EXTREMITY OF THE CYLINDRICAL HEAD BEING AT A DISTANCE FROM SAID OUTLET ORIFICE OF THE CYLINDRO-CONICAL HEAD COMPRISED BETWEEN TWICE AND EIGHT TIMES THE DIAMETER OF SAID OUTLET ORIFICE, SAID CYLINDRICAL HEAD BEING PROVIDED WITH PERIPHERAL PASSAGES FOR THE FLOW OF THE ATOMIZING GAS HAVING A TOTAL SECTION SUCH THAT THE VELOCITY OF SAID GAS IS COMPRISED BETWEEN 50 AND 150 METRES PER SECOND, BEARING MEANS BETWEEN SAID CYLINDRO-CONICAL HEAD AND SAID CYLINDRICAL HEAD, AND A SPRING TO APPLY SAID CYLINDRICAL HEAD AGAINST SAID CYLINDRO-CONICAL HEAD.
Claim 2
Dependent Claim
174 words
A HYDROCARBON INJECTOR FOR BLAST FURNACES, WHICH COMPRISES AN OUTER HEAT RESISTING TUBE, AN INTERMEDIATE TUBE CO-AXIAL THEREWITH FOR THE SUPPLY OF ATOMIZING GAS, A HEAT RESISTING CYLINDRO-CONICAL HEAD TERMINATING SAID INTERMEDIATE TUBE AND HAVING AN OUTLET ORIFICE THE LENGTH THEREOF BEING SUBSTANTIALLY EQUAL TO ITS DIAMETER, A CENTRAL COAXIAL TUBE FOR THE SUPPLY OF AT LEAST A LIQUID HYDROCARBON FUEL, A CYLINDRICAL HEAD TERMINATING SAID CENTRAL TUBE AND HAVING A CENTRAL PASSAGE FOR THE FLOW OF FUEL ADAPTED TO SLIDE FREELY INTO THE CYLINDRO-CONICAL HEAD, THE OUTLET EXTREMITY OF THE CYLINDRICAL HEAD BEING AT A DISTANCE FROM SAID OUTLET ORIFICE OF THE CYLINDRO-CONICAL HEAD COMPRISED BETWEEN TWICE AND EIGHT TIMES THE DIAMETER OF SAID OUTLET ORIFICE, SAID CYLINDRICAL HEAD BEING PROVIDED WITH PERIPHERAL PASSAGES FOR THE FLOW OF THE ATOMIZING GAS HAVING A TOTAL SECTION SUCH THAT THE VELOCITY OF SAID GAS IS COMPRISED BETWEEN 50 AND 150 METRES PER SECOND, BEARING MEANS BETWEEN SAID CYLINDRO-CONICAL HEAD AND SAID CYLINDRICAL HEAD, AND A SPRING TO APPLY SAID CYLINDRICAL HEAD AGAINST SAID CYLINDRO-CONICAL HEAD.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |