US3264482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engines
Assignee: Bristol Siddeley Engines Ltd
•
Filing: 1963-08-22
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Granted: 1966-08-02
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Clark Kenneth William
- 👤 Seymour Donald Glenfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
F; F01; F01D; F01D15/00; F01D15/10; F02; F02C; F02C7/00; F02C7/26; F02C7/264; F02C7/266; F02C7/268; F02C7/32; H; H02; H02P; H02P9/00; H02P9/08; H02P2101/00; H02P2101/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
TWO-SPOOL GAS TURBINE ENGINE FOR AIRCRAFT PROPULSION COMPRISING A PAIR OF AXIALLY ALIGNED FIRST AND SECOND AXIAL FLOW COMPRESSORS, AN ANNULAR DUCT COMMUNICATING AT LEAST A PART OF THE OUTPUT OF THE FIRST COMPRESSOR TO THE SECOND COMPRESSOR, SAID DUCT INCLUDING INNER AND OUTER ANNULAR WALLS, GUIDE VANES RADIALLY CONNECTED BETWEEN SAID WALLS, AN AUXILIARY A.C. MACHINE, E.G. FOR STARTING THE ENGINE, SITUATED AT THE INSIDE OF SAID INNER WALL AND AXIALLY BETWEEN SAID COMPRESSOR, SAID MACHINE INCLUDING A STATOR SUPPORTED BY SAID INNER WALL AND A ROTOR DRIVINGLY CONNECTED TO ONE OF THE COMPRESSORS TO BE ROTATED THEREBY, AND ELECTRICAL CABLE MEANS CONNECTED TO THE STATOR FROM A POSITION OUTSIDE SAID OUTER WALL AND PASSING TO THE STATOR THROUGH THE INTERIOR OF AT LEAST ONE OF SAID VANES.
Claim 2
Dependent Claim
129 words
TWO-SPOOL GAS TURBINE ENGINE FOR AIRCRAFT PROPULSION COMPRISING A PAIR OF AXIALLY ALIGNED FIRST AND SECOND AXIAL FLOW COMPRESSORS, AN ANNULAR DUCT COMMUNICATING AT LEAST A PART OF THE OUTPUT OF THE FIRST COMPRESSOR TO THE SECOND COMPRESSOR, SAID DUCT INCLUDING INNER AND OUTER ANNULAR WALLS, GUIDE VANES RADIALLY CONNECTED BETWEEN SAID WALLS, AN AUXILIARY A.C. MACHINE, E.G. FOR STARTING THE ENGINE, SITUATED AT THE INSIDE OF SAID INNER WALL AND AXIALLY BETWEEN SAID COMPRESSOR, SAID MACHINE INCLUDING A STATOR SUPPORTED BY SAID INNER WALL AND A ROTOR DRIVINGLY CONNECTED TO ONE OF THE COMPRESSORS TO BE ROTATED THEREBY, AND ELECTRICAL CABLE MEANS CONNECTED TO THE STATOR FROM A POSITION OUTSIDE SAID OUTER WALL AND PASSING TO THE STATOR THROUGH THE INTERIOR OF AT LEAST ONE OF SAID VANES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |