US3278138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Take-off assist for vtol aircraft
Assignee: Bolkow GmbH
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Filing: 1964-04-14
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Granted: 1966-10-11
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Expires: 1984-04-14
Abstract
No abstract record available.
Inventors
- 👤 Haberkorn Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
B; B64; B64D; B64D27/00; B64D27/02; B64D27/023; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0083; B64C29/0091; Y; Y02; Y02T; Y02T50/00; Y02T50/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
184 words
A VERTICAL TAKE-OFF AND LANDING AIRCRAFT COMPRISING A FUSELAGE HAVING AN AIR FOIL WIND ARRANGED IN THE CENTER OF GRAVITY OF SAID AIRCRAFT, A T LEAST TWO LIFT ENGINES MOUNTED IN A FIXED POSITION ON SAID FUSELAGE BEFORE THE CENTER OF GRAVITY OF SAID AIRCRAFT, AT LEAST ONE COMBUSTION FORWARD PROPULSION AND LIFT ENGINE MOUNTED ON SAID FUSELAGE BEHIND THE CENTER OF GRAVITY OF SAID AIRCRAFT AND PROVIDING CORRECTIVE LIFT ABOUT THE CENTER OF GRAVITY IN RESPECT TO THE LIFT PROVIDED BY SAID LIFT ENGINES, SAID COMBUSTION FORWARD PROPULSION AND LIFT ENGINE HAVING MENS FOR SELECTIVELY DIRECTING THRUST GASES SUBSTANTIALLY VERTICALLY AND SUBSTANTIALLY HORIZONTALLY AND MEANS ADJACENT THE DISCHARGE OF SAID LIFT ENGINES AND SAID COMBUSTION FORWARD PROPULSION AND LIFT ENGINE FOR DEFLECTING PORPELLING GASES FROM THE VERTICAL IN ANY SELECTED DIRECTION, AND A ROCKET MOUNTED ON SAID AIRCRAFT IN THE VICINITY OF THE CENTER OF GRAVITY, FOR SUPPLYING AN ASSIST-THRUST FOR TAKE-OFF PURPOSES FOR DIRECTING A THRUST IN A DIRECTION TO COMPENSATE FOR ANY REDUCTION IN LIFT DUE TO GROUND EFFECTS ON SAID LIFT ENGINES AND SAID COMBINATION LIFT ENGINE AND THRUST ENGINE.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |