US3302907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Rolls Royce PLC
•
Filing: 1964-11-30
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Granted: 1967-02-07
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Wilde Geoffrey Light
- 👤 Coplin John Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:06
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033; B64C29/0041; B64C29/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN AIRCRAFT HAVING A FUSELAGE, AERODYNAMIC SURFACES, AT LEAST ONE FORWARD PROPULSION ENGINE, AND AN ADDITIONAL PROPULSION UNIT WHICH IS MOUNTED SO AS TO BE MOVABLE BETWEEN A RETRACTED POSITION IN WHICH IT IS DISPOSED WITHIN THE FUSELAGE OF THE AIRCRAFT, AND AN EXTENDED POSITION IN WHICH IT IS DISPOSED EXTERNALLY OF THE AIRCRAFT SO AS TO BE CAPABLE OF PRODUCING LIFT FORCES ON THE AIRCRAFT INDEPENDENTLY OF THOSE PRODUCED BY THE AERODYNAMIC SURFACES OF THE AIRCRAFT DURING FORWARD FLIGHT THEREOF, AND MEANS OPERABLE TO PIVOT THE ADDITIONAL PROPULSION UNIT SELECTIVELY REARWARDLY AND FORWARDLY ABOUT A PIVOT AXIS PERPENDICULAR TO THE LONGITUDINAL AXIS OF THE AIRCRAFT FOR DIRECTING THE THRUST OF THE ADDITIONAL PROPULSION UNIT RESPECTIVELY REARWARDLY OF THE AIRCRAFT TO ENABLE TRANSITION OF THE AIRCRAFT FROM VERTICAL TO FORWARD FLIGHT TO BE EFFECTED AND FORWARDLY OF THE AIRCRAFT TO PROVIDE A BRAKING EFFECT AND REDUCE THE FORWARD SPEED OF THE AIRCRAFT.
Claim 2
Dependent Claim
152 words
AN AIRCRAFT HAVING A FUSELAGE, AERODYNAMIC SURFACES, AT LEAST ONE FORWARD PROPULSION ENGINE, AND AN ADDITIONAL PROPULSION UNIT WHICH IS MOUNTED SO AS TO BE MOVABLE BETWEEN A RETRACTED POSITION IN WHICH IT IS DISPOSED WITHIN THE FUSELAGE OF THE AIRCRAFT, AND AN EXTENDED POSITION IN WHICH IT IS DISPOSED EXTERNALLY OF THE AIRCRAFT SO AS TO BE CAPABLE OF PRODUCING LIFT FORCES ON THE AIRCRAFT INDEPENDENTLY OF THOSE PRODUCED BY THE AERODYNAMIC SURFACES OF THE AIRCRAFT DURING FORWARD FLIGHT THEREOF, AND MEANS OPERABLE TO PIVOT THE ADDITIONAL PROPULSION UNIT SELECTIVELY REARWARDLY AND FORWARDLY ABOUT A PIVOT AXIS PERPENDICULAR TO THE LONGITUDINAL AXIS OF THE AIRCRAFT FOR DIRECTING THE THRUST OF THE ADDITIONAL PROPULSION UNIT RESPECTIVELY REARWARDLY OF THE AIRCRAFT TO ENABLE TRANSITION OF THE AIRCRAFT FROM VERTICAL TO FORWARD FLIGHT TO BE EFFECTED AND FORWARDLY OF THE AIRCRAFT TO PROVIDE A BRAKING EFFECT AND REDUCE THE FORWARD SPEED OF THE AIRCRAFT.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |