Patent US3223360A successfully refreshed from Google Patents.
US3223360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vtol aircraft jet installation
Assignee: Vereinigte Flugtechnische Werke Fokker GmbH
•
Filing: 1962-10-10
•
Granted: 1965-12-14
•
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 20:15
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.
References Cited (Backward Citations)
US1723012A
Cited
US2715001A
Cited
US2722391A
Cited
US2838257A
Cited
US2926868A
Cited
US2990137A
Cited
US2936973A
Cited
US3037723A
Cited
US3043538A
Cited
GB907398A
Cited
US3048011A
Cited
US3061243A
Cited
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 |