US4022403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible aircraft
Assignee: Individual
•
Filing: 1976-01-28
•
Granted: 1977-05-10
•
Expires: 1996-01-28
Abstract
Abstract An aircraft that is designed to additionally be able to travel along a railroad track so that it can get into a heart of a city, instead of terminating at an airport located some distance away from the city; the aircraft including wings which can be folded inwardly adjacent the side of the aircraft fuselage so that it requires approximately a same width of clearance as a conventional railroad train, and the railroad tracks being additionally fitted with a system of channel rails welded on top of the oid railroad track so that the airplane can travel thereupon.
Inventors
- 👤 Louis Francois Chiquet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:32
CPC Classifications
B; B61; B61B; B61B15/00; B64; B64C; B64C3/00; B64C3/38; B64C3/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
In a convertible aircraft, the combination of an airplane fuselage, a jet engine mounted along said fuselage, a pair of wings connected to said fuselage, a tail with rudder, and means for said wings to be retracted from a sidewardly extended position to a position alongside said fuselage, said means comprising for each wing a hydraulic cylinder located in a forward portion of said fuselage, said hydraulic cylinder having a piston rod which at its end is pivotally connected to an inboard end of said wing which is located close to a pivot about which said wing pivots, and a bracing mechanism being located in a rear portion of said fuselage, said bracing mechanism including a second hydraulic cylinder pivotable at one end about a stationary pin on said fuselage, a piston of said second cylinder being attached at its outward end to an intermediate portion of an arm which at its one end is pivotable about another stationary pin of said fuselage, an opposite end of said arm being pivotally attached to one end of a brace which at its other end is pivotally attached to said wing.
Claim 2
Dependent Claim
189 words
In a convertible aircraft, the combination of an airplane fuselage, a jet engine mounted along said fuselage, a pair of wings connected to said fuselage, a tail with rudder, and means for said wings to be retracted from a sidewardly extended position to a position alongside said fuselage, said means comprising for each wing a hydraulic cylinder located in a forward portion of said fuselage, said hydraulic cylinder having a piston rod which at its end is pivotally connected to an inboard end of said wing which is located close to a pivot about which said wing pivots, and a bracing mechanism being located in a rear portion of said fuselage, said bracing mechanism including a second hydraulic cylinder pivotable at one end about a stationary pin on said fuselage, a piston of said second cylinder being attached at its outward end to an intermediate portion of an arm which at its one end is pivotable about another stationary pin of said fuselage, an opposite end of said arm being pivotally attached to one end of a brace which at its other end is pivotally attached to said wing.
References Cited (Backward Citations)
US141217A
Cited
US2319446A
Cited
FR54814E
Cited
GB672959A
Cited
US3140842A
Cited
US3715991A
Cited
US3701323A
Cited
US3830452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |