US3223360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vtol aircraft jet installation
Assignee: Vereinigte Flugtechnische Werke Fokker GmbH
•
Filing: 1962-10-10
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Granted: 1965-12-14
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Expires: 1982-10-10
Abstract
No abstract record available.
Inventors
- 👤 Hertel Heinrich Ludwig
- 👤 Krug Helmut Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:26
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0025; B64C29/0041; B64C29/0058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A VERTICALO TAKE-OFF AND LANDING AIRCRAFT, AN EN-U CLOSED FUSELAGE HAVING A CENTRAL LONGITUDINAL AXIS, A PAIR OF LIFTING JET DEVICES, EACH HAVING A DOWNWWARDLY-DIRECTED AIR OUTLET AND AN UPWARDLY AND OUTWARDLY-DIRECTED AIR INLET, AND MEANS MOUNTING EACH SAID DEVICE BENEATH SAID FUSELAGE IN SUSPENDED CONNECTION THEREWITH, WITH SAID OUTLETS IN SYMMETRICAL RELATION WITH A NORMALLY VERITCAL PLAN THROUGH SAID AXIS AND INLETS DIRECTED OUTWARDLY AND UPWARDLY AT RESPECTIVELY OPPOSITE SIDES OF SAID FUSELAGE.
Claim 2
Dependent Claim
75 words
IN A VERTICALO TAKE-OFF AND LANDING AIRCRAFT, AN EN-U CLOSED FUSELAGE HAVING A CENTRAL LONGITUDINAL AXIS, A PAIR OF LIFTING JET DEVICES, EACH HAVING A DOWNWWARDLY-DIRECTED AIR OUTLET AND AN UPWARDLY AND OUTWARDLY-DIRECTED AIR INLET, AND MEANS MOUNTING EACH SAID DEVICE BENEATH SAID FUSELAGE IN SUSPENDED CONNECTION THEREWITH, WITH SAID OUTLETS IN SYMMETRICAL RELATION WITH A NORMALLY VERITCAL PLAN THROUGH SAID AXIS AND INLETS DIRECTED OUTWARDLY AND UPWARDLY AT RESPECTIVELY OPPOSITE SIDES OF SAID FUSELAGE.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |