US3157373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical lift gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1963-01-15
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Granted: 1964-11-17
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Expires: 1983-01-15
Abstract
No abstract record available.
Inventors
- 👤 May Gordon Cyril
- 👤 Stewart Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:31
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0058
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
IN AN AIRCRAFT ADAPTED FOR VERTICAL TAKE-OFF AND LANDING, A PLURALITY OF VERTICAL LIFT ENGINES EACH OF WHICH COMPRISES IN FLOW SERIES A COMPRESSOR, COMBUSTION EQUIPMENT, A TURBINE AND A FINAL NOZZLE; A BLEED CONDUIT ARRANGED UPSTREAM OF THE RESPECTIVE COMBUSTION EQUIPMENT AND EXTENDING EXTERNALLY OF THE RESPECTIVE ENGINE; MEANS FOR SUPPLYING SAID BLEED CONDUIT WITH A PORPOTION OF THE AIR COMPRESSED BY THE RESPECTIVE COMPRESSOR; AND MEANS FOR VARYING THE EFFECTIVE AREA OF THE RESPECTIVE FINAL NOZZLE SO AS TO VARY THE SPEED OF THE RESPECTIVE TURBINE AND COMPRESSOR AND HENCE THE AMOUNT OF AIR SUPPLIED TO THE RESPECTIVE BLEED CONDUIT; AND A NOZZLE MEANS ON SAID AIRCRAFT FOR EFFECTING ATTITUDE CONTROL; THE BLEED CONDUIT OF THE VERTICAL LIFT ENGINES SUPPLYING AIR TO SAID NOZZLE MEANS.
References Cited (Backward Citations)
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |