US3117747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical take-off aircraft
Assignee: English Electric Co Ltd
•
Filing: 1961-10-30
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Granted: 1964-01-14
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 Creasey Raymond Frederick
- 👤 Annes Lytham St
- 👤 Walley Gerald David
- 👤 Willox Frank Gerrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:23
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/08; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN AEROPLANE CAPABLE OF LIFTING ITSELF CLEAR OF THE GROUND AT A SPEED BELOW WINGBORNE SPEED AND OF ACCELERATING TO WINGBORNE SPEED WHILE OFF THE GROUND COMPRISING IN COMBINATION: A FUSELAGE, AN AEROPLANE WING MOUNTED ON SAID FUSELAGE, GAS JET GENERATING MEANS ARRANGED ON THE UNDERSIDE OF SAID FUSELAGE FOR PRODUCING A PERIPHERAL GAS CURTAIN OF A THRUST OF A MAGNITUDE BELOW THE WEIGHT OF SAID AEROPLANE BUT EXCEEDING THE THRUST REQUIRED FOR STEADILY HOVERING CLOSE TO THE GROUND OWING TO THE GROUND EFFECT OF THE GAS CUSHION ENCLOSED BY SAID GAS CURTAIN, AND ENABLING SAID AIRCRAFT TO LEAP ABOVE SAID STEADY HOVERING HEIGHT, PROPULSIVE MEANS HAVING AT LEAST A FORWARD THRUST COMPONENT ACCELERATING SAID AEROPLANE TO WINGBORNE
Claim 2
Dependent Claim
118 words
AN AEROPLANE CAPABLE OF LIFTING ITSELF CLEAR OF THE GROUND AT A SPEED BELOW WINGBORNE SPEED AND OF ACCELERATING TO WINGBORNE SPEED WHILE OFF THE GROUND COMPRISING IN COMBINATION: A FUSELAGE, AN AEROPLANE WING MOUNTED ON SAID FUSELAGE, GAS JET GENERATING MEANS ARRANGED ON THE UNDERSIDE OF SAID FUSELAGE FOR PRODUCING A PERIPHERAL GAS CURTAIN OF A THRUST OF A MAGNITUDE BELOW THE WEIGHT OF SAID AEROPLANE BUT EXCEEDING THE THRUST REQUIRED FOR STEADILY HOVERING CLOSE TO THE GROUND OWING TO THE GROUND EFFECT OF THE GAS CUSHION ENCLOSED BY SAID GAS CURTAIN, AND ENABLING SAID AIRCRAFT TO LEAP ABOVE SAID STEADY HOVERING HEIGHT, PROPULSIVE MEANS HAVING AT LEAST A FORWARD THRUST COMPONENT ACCELERATING SAID AEROPLANE TO WINGBORNE
References Cited (Backward Citations)
US3070327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |