US3287907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine exhaust duct structure
Assignee: Rolls Royce PLC
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Filing: 1965-04-01
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Granted: 1966-11-29
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Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 Bill Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:25
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F01; F01D; F01D25/00; F01D25/30; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A GAS TURBINE COMPRISING COMPRESSOR EQUIPMENT, COMBUSTION EQUIPMENT, TURBINE EQUIPMENT AND AN ANNULAR EXHAUST DUCT ALL ARRANGED IN FLOW SERIES, SAID EXHAUST DUCT COMPRISING AN OUTER CASING MEMBER AND AN INNER FRUSTO-CONICAL MEMBER, THE FRUSTO CONICAL MEMBER BEING OPEN AT ITS DOWNSTREAM END AND INDUCING EXHAUST GASES TO FORM A VORTEX FLOWING THEREWITHIN, AND FORM A CONE OF GAS OVER WHICH THE REMAINING EXHAUST GASES FLOW, MEANS FOR BLEEDING COMPRESSED AIR FROM A STAGE OF SAID COMPRESSOR EQUIPMENT, MEANS FOR DIRECTING IT TO PARTS OF SAID ENGINE TO COOL THE PARTS, AND BOOSTER MEANS FOR BOOSTING THE PRESSURE OF THE COMPRESSED AIR SUCH THAT IT MAY BE EXHAUSTED INTO SAID VORTEX FLOW WITHIN THE EXHAUST DUCT.
Claim 2
Dependent Claim
116 words
A GAS TURBINE COMPRISING COMPRESSOR EQUIPMENT, COMBUSTION EQUIPMENT, TURBINE EQUIPMENT AND AN ANNULAR EXHAUST DUCT ALL ARRANGED IN FLOW SERIES, SAID EXHAUST DUCT COMPRISING AN OUTER CASING MEMBER AND AN INNER FRUSTO-CONICAL MEMBER, THE FRUSTO CONICAL MEMBER BEING OPEN AT ITS DOWNSTREAM END AND INDUCING EXHAUST GASES TO FORM A VORTEX FLOWING THEREWITHIN, AND FORM A CONE OF GAS OVER WHICH THE REMAINING EXHAUST GASES FLOW, MEANS FOR BLEEDING COMPRESSED AIR FROM A STAGE OF SAID COMPRESSOR EQUIPMENT, MEANS FOR DIRECTING IT TO PARTS OF SAID ENGINE TO COOL THE PARTS, AND BOOSTER MEANS FOR BOOSTING THE PRESSURE OF THE COMPRESSED AIR SUCH THAT IT MAY BE EXHAUSTED INTO SAID VORTEX FLOW WITHIN THE EXHAUST DUCT.
References Cited (Backward Citations)
US2636665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |