US3285537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical take off and landing aircraft
Assignee: De Havilland Aircraft of Canada Ltd
•
Filing: 1966-03-22
•
Granted: 1966-11-15
•
Expires: 1986-03-22
Abstract
No abstract record available.
Inventors
- 👤 Whittley Donald Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:54
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A VERTICAL TAKE OFF AND LANDING AIRCRAFT COMPRISING: A FUSELAGE; WING STRUCTURE ADAPTED TO SUSTAIN SAID FUSELAGE IN FLIGHT AT A FORWARD CRUISING SPEED; A FIRST JET ENGINE AND A REARWARDLY EXTENDING JET TUBE IN SAID FUSELAGE ADAPTED TO PROPEL SAID AIRCRAFT AT CRUISING SPEED; AT LEAST ONE OTHER JET ENGINE IN SAID FUSELAGE; TWO SIDE PLENUMS EXTENDING LONGITUDINALLY IN THE LOWER FORWARD REGIONS AT LEAST OF SAID FUSELAGE AND EACH HAVING A LONGITUDINAL SLOT FOR THE TANGENTIALLY DOWNWARD ESCAPE OF GASES THEREFROM OVER UNDER SURFACES OF SAID FUSELAGE; MEANS CONNECTING SAID OTHER ENGINE TO SAID PLENUMS AND RETRACTABLE SHROUD FLAP MEANS FOR EACH PLENUM DEFINING WHEN CLOSED THEREWITH SUBSTANTIALLY CONVENTIONAL FUSELAGE CONTOURS
Claim 2
Dependent Claim
113 words
A VERTICAL TAKE OFF AND LANDING AIRCRAFT COMPRISING: A FUSELAGE; WING STRUCTURE ADAPTED TO SUSTAIN SAID FUSELAGE IN FLIGHT AT A FORWARD CRUISING SPEED; A FIRST JET ENGINE AND A REARWARDLY EXTENDING JET TUBE IN SAID FUSELAGE ADAPTED TO PROPEL SAID AIRCRAFT AT CRUISING SPEED; AT LEAST ONE OTHER JET ENGINE IN SAID FUSELAGE; TWO SIDE PLENUMS EXTENDING LONGITUDINALLY IN THE LOWER FORWARD REGIONS AT LEAST OF SAID FUSELAGE AND EACH HAVING A LONGITUDINAL SLOT FOR THE TANGENTIALLY DOWNWARD ESCAPE OF GASES THEREFROM OVER UNDER SURFACES OF SAID FUSELAGE; MEANS CONNECTING SAID OTHER ENGINE TO SAID PLENUMS AND RETRACTABLE SHROUD FLAP MEANS FOR EACH PLENUM DEFINING WHEN CLOSED THEREWITH SUBSTANTIALLY CONVENTIONAL FUSELAGE CONTOURS
References Cited (Backward Citations)
US3124322A
Cited
US2918233A
Cited
US3148848A
Cited
US3117643A
Cited
US3073548A
Cited
US3053482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |