Patent US3237891A successfully refreshed from Google Patents.
US3237891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet-propulsion power-plants for aircraft
Assignee: BAC AND BRITISH AEROSPACE
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Filing: 1964-05-13
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Granted: 1966-03-01
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Wotton John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:22
CPC Classifications
B; B64; B64D; B64D27/00; B64D27/02; B64D27/16; B64D27/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN AIRCRAFT JET-PROPULSION ENGINE INSTALLATION INCLUDING A CENTRAL ENGINE BURIED IN THE TAIL END OF THE FUSELAGE, TWO NACELLES ATTACHED TO OPPOSITE SIDES OF THE FUSELAGE LATERALLY OF SAID CENTRAL ENGINE, AN ENGINE MOUNTED WITHIN EACH OF SAID NACELLES, THE THRUST LINES OF SAID NACELLE MOUNTED ENGINES BEING ANGLED OUTWARDLY IN PLAN TOWARDS THE FRONT OF THE AIRCRAFT, ALL OF SAID ENGINES BEING OF THE TURBO-FAN TYPE HAVING AT THEIR AFTER ENDS A CO-AXIALLY DISPOSED SUPPLEMENTARY TURBO-FAN UNIT, ANNULAR COWLS SURROUNDING EACH OF SAID SUPPLEMENTARY TURBO-FAN UNITS, THE COWLS SURROUNDING THE SUPPLEMENTARY TURBO-FAN UNITS OF SAID NACELLE MOUNTED ENGINES BEING INTEGRATED WITH THE COWL SURROUNDING THE SUPPLEMENTARY TURBO-FAN UNIT OF SAID CENTRAL ENGINE, AND ALL THREE OF SAID COWLS HAVING EFFLUX JEX-NOZZLES OF ELLIPTICAL CROSS-SECTION WITH THEIR MAJOR AXES LYING IN THE HORIZONTAL PLANE.
Claim 2
Dependent Claim
134 words
AN AIRCRAFT JET-PROPULSION ENGINE INSTALLATION INCLUDING A CENTRAL ENGINE BURIED IN THE TAIL END OF THE FUSELAGE, TWO NACELLES ATTACHED TO OPPOSITE SIDES OF THE FUSELAGE LATERALLY OF SAID CENTRAL ENGINE, AN ENGINE MOUNTED WITHIN EACH OF SAID NACELLES, THE THRUST LINES OF SAID NACELLE MOUNTED ENGINES BEING ANGLED OUTWARDLY IN PLAN TOWARDS THE FRONT OF THE AIRCRAFT, ALL OF SAID ENGINES BEING OF THE TURBO-FAN TYPE HAVING AT THEIR AFTER ENDS A CO-AXIALLY DISPOSED SUPPLEMENTARY TURBO-FAN UNIT, ANNULAR COWLS SURROUNDING EACH OF SAID SUPPLEMENTARY TURBO-FAN UNITS, THE COWLS SURROUNDING THE SUPPLEMENTARY TURBO-FAN UNITS OF SAID NACELLE MOUNTED ENGINES BEING INTEGRATED WITH THE COWL SURROUNDING THE SUPPLEMENTARY TURBO-FAN UNIT OF SAID CENTRAL ENGINE, AND ALL THREE OF SAID COWLS HAVING EFFLUX JEX-NOZZLES OF ELLIPTICAL CROSS-SECTION WITH THEIR MAJOR AXES LYING IN THE HORIZONTAL PLANE.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |