Patent US3290885A successfully refreshed from Google Patents.
US3290885A
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US
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Gas turbine jet propulsion engine for v. t. o. l. aircraft
Assignee: Rolls Royce PLC
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Filing: 1964-06-29
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Granted: 1966-12-13
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas Samuel David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:38
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0066; F; F02; F02K; F02K1/00; F02K1/002; F02K1/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A GAS TURBINE JET PROPULSION ENGINE HAVING COMPRESSOR MEANS, COMBUSTION EQUIPMENT, TURBINE MEANS AND A JET PIPE FOR EXHAUST GASES, ALL ARRANGED IN FLOW SERIES, SAID ENGINE ALSO BEING PROVIDED WITH TWO DUCTS DISPOSED SYMMETRICALLY ON OPPOSITE SIDES OF THE LONGITUDINAL AXIS OF THE ENGINE AND ADAPTED TO BE SUPPLIED DIRECTLY WITH SOME OF THE AIR COMPRESSED BY SAID COMPRESSOR MEANS, A PAIR OF FIXED PROPULSION NOZZLES HAVING THEIR AAXES INCLINED AT A FIXED ANGLE TO EACH OTHER AND MOUNTED IN EACH DUCT FOR RECEIVING AIR CONDUCTED BY SAID DUCTS, AND VALVE MEANS ASSOCIATED WITH EACH PAIR OF PROPULSION NOZZLES FOR PERMITTING THE COMPRESSED AIT TO FLOW THROUGH A SELECTED ONE OF THE PAIR OF PROPULSION NOZZLES, AND FOR SIMULTANEOUSLY PREVENTING THE COMPRESSED AIR FROM FLOWING THROUGH THE OTHER PROPULSION NOZZLE.
Claim 2
Dependent Claim
131 words
A GAS TURBINE JET PROPULSION ENGINE HAVING COMPRESSOR MEANS, COMBUSTION EQUIPMENT, TURBINE MEANS AND A JET PIPE FOR EXHAUST GASES, ALL ARRANGED IN FLOW SERIES, SAID ENGINE ALSO BEING PROVIDED WITH TWO DUCTS DISPOSED SYMMETRICALLY ON OPPOSITE SIDES OF THE LONGITUDINAL AXIS OF THE ENGINE AND ADAPTED TO BE SUPPLIED DIRECTLY WITH SOME OF THE AIR COMPRESSED BY SAID COMPRESSOR MEANS, A PAIR OF FIXED PROPULSION NOZZLES HAVING THEIR AAXES INCLINED AT A FIXED ANGLE TO EACH OTHER AND MOUNTED IN EACH DUCT FOR RECEIVING AIR CONDUCTED BY SAID DUCTS, AND VALVE MEANS ASSOCIATED WITH EACH PAIR OF PROPULSION NOZZLES FOR PERMITTING THE COMPRESSED AIT TO FLOW THROUGH A SELECTED ONE OF THE PAIR OF PROPULSION NOZZLES, AND FOR SIMULTANEOUSLY PREVENTING THE COMPRESSED AIR FROM FLOWING THROUGH THE OTHER PROPULSION NOZZLE.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |