US3155342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vtol aircraft construction
Assignee: Boelkow Entwicklungen KG
•
Filing: 1962-05-22
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Granted: 1964-11-03
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Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bolkow Ludwig
- 👤 Haberkorn Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:31
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN AIRCRAFT COMPRISING A FUSELAGE, AT LEAST ONE FIRST THRUST ENGINE MEANS ARRANGED FORWARD OF THE CENTER OF GRAVITY OF SAID AIRCRAFT IN A FIXED POSITION FOR DIRECTING THRUST GASES DOWNWARDLY FOR LIFTING THE AIRCRAFT VERTICALLY, MEANS FOR DEFLECTING THRUST GASES DIRECTED DOWNWARDLY BY SAID FIRST THRUST ENGINE BOTH IN FORWARD AND REAR DIRECTIONS AND LATERALLY AND AT LEAST ONE SECOND THRUST ENGINE MEANS AFT OF THE CENTER OF GRAVITY HAVING MEANS FOR SELECTIVELY DIRECTING THRUST GASES DOWNWARDLY AND REARWARDLY FOR VERTICAL AND FORWARD FLIGHT, RESPECTIVELY.
Claim 2
Dependent Claim
86 words
AN AIRCRAFT COMPRISING A FUSELAGE, AT LEAST ONE FIRST THRUST ENGINE MEANS ARRANGED FORWARD OF THE CENTER OF GRAVITY OF SAID AIRCRAFT IN A FIXED POSITION FOR DIRECTING THRUST GASES DOWNWARDLY FOR LIFTING THE AIRCRAFT VERTICALLY, MEANS FOR DEFLECTING THRUST GASES DIRECTED DOWNWARDLY BY SAID FIRST THRUST ENGINE BOTH IN FORWARD AND REAR DIRECTIONS AND LATERALLY AND AT LEAST ONE SECOND THRUST ENGINE MEANS AFT OF THE CENTER OF GRAVITY HAVING MEANS FOR SELECTIVELY DIRECTING THRUST GASES DOWNWARDLY AND REARWARDLY FOR VERTICAL AND FORWARD FLIGHT, RESPECTIVELY.
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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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |