Patent JPS5574202A successfully refreshed from Google Patents.
US3304074A
Expired / Lapsed
US
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Blast furnace supply system
Assignee: RTX Corp
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Filing: 1962-10-31
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Granted: 1967-02-14
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Robert R Atherton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:11
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/001; C21B5/06; C21B9/00; C21B9/10; C21B9/12; F; F02; F02C; F02C3/00; F02C3/20; F02C3/24; F02C6/00; F02C6/04; F02C6/06; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04006; F25J3/04012; F25J3/04018; F25J3/04109; F25J3/04115; F25J3/04127; F25J3/04521; F25J3/04527; F25J3/04533; F25J3/04551; F25J3/04557; F25J3/04593; F25J3/046; F25J3/04612; C21B2100/00; C21B2100/20; C21B2100/26; C21B2100/28; C21B2100/284; C21B2100/40; C21B2100/44; C21B2100/60; C21B2100/62; C21B2100/66; F25J2230/00; F25J2230/20; F25J2230/40; F25J2230/60; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE COMBINATION WITH A BLAST FURNACE OR THE LIKE HAVING AIR INLETS TO WHICH GAS UNDER PRESSURE IS ADMITTED, AND AN EXHAUST STACK, AND AN OXYGEN PRODUCING PLANT, OF A GAS TURBINE ENGINE HAVING A MAIN COMPRESSOR AND TURBINE, SAID TURBINE DRIVING SAID COMPRESSOR, MEANS FOR DELIVERING AIR FROM SAID MAIN COMPRESSOR TO THE BLAST FURNACE INLETS, AN AUXILIARY COMPRESSOR DRIVEN BY THE TURBINE AND SUPPLYING AIR TO THE OXYGEN PRODUCING PLANT, MEANS FOR COMBINING A PART OF THE OXYGEN FROM THE OXYGEN PRODUCING PLANT WITH THE AIR FROM THE MAIN COMPRESSOR
Claim 2
Dependent Claim
92 words
THE COMBINATION WITH A BLAST FURNACE OR THE LIKE HAVING AIR INLETS TO WHICH GAS UNDER PRESSURE IS ADMITTED, AND AN EXHAUST STACK, AND AN OXYGEN PRODUCING PLANT, OF A GAS TURBINE ENGINE HAVING A MAIN COMPRESSOR AND TURBINE, SAID TURBINE DRIVING SAID COMPRESSOR, MEANS FOR DELIVERING AIR FROM SAID MAIN COMPRESSOR TO THE BLAST FURNACE INLETS, AN AUXILIARY COMPRESSOR DRIVEN BY THE TURBINE AND SUPPLYING AIR TO THE OXYGEN PRODUCING PLANT, MEANS FOR COMBINING A PART OF THE OXYGEN FROM THE OXYGEN PRODUCING PLANT WITH THE AIR FROM THE MAIN COMPRESSOR
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |