US3083935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible aircraft
Assignee: Piasecki Aircraft Corp
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Filing: 1962-01-15
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Granted: 1963-04-02
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Frank N Piasecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:50
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0025; B64C3/00; B64C3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A CONVERTIBLE AIRCRAFT ADAPTED FOR HIGH SPEED FORWARD FLIGHT AND FOR VERTICAL TAKE-OFF AND LANDING INCLUDING A FUSELAGE, MEANS FOR FORWARD PROPULSION OF THE AIRCRAFT, WING ASSEMBLIES EXTENDING OUTWARDLY FROM OPPOSITE SIDES OF THE FUSELAGE, EACH WING ASSEMBLY COMPRISING A MOVABLE AIRFOIL WING DESIGNED TO PROVIDE LIFT FOR THE AIRCRAFT DURING HIGH SPEED FORWARD FLIGHT AND A STATIONARY ROOT MEMBER FIXED TO THE FUSELAGE AND EXTENDING LATERALLY THEREFROM FOR SUPPORTING SAID AIRFOIL WING, SAID ROOT MEMBER HOUSING A HELICOPTER ROTOR UNIT THEREIN INCLUDING A ROTOR DUCT AND A HELICOPTER ROTOR ROTATABLE WITHIN SAID DUCT ABOUT A VERTICAL AXIS, MEANS SLIDABLY SUPPORTING SAID AIRFOIL WING IN SPANWISE RECIPROCATIVE MOVEMENT ON SAID ROOT MEMBER FROM A RETRACTED POSITION WHEREIN THE AIRFOIL WING ABUTS THE FUSELAGE TO AN EXTENDED POSITION WHEREIN SAID HELICOPTER ROTOR UNIT IS EXPOSED, SAID AIRFOIL WING HAVING MEANS COMPLETELY ENCASING SAID ROOT MEMBER WHEN SAID AIRFOIL WING IS IN RETRACTED POSITION, AND POWER MEANS FOR DRIVING THE ROTORS OF SAID HELICOPTER ROTOR UNITS TO PROVIDE THE LIFT FOR SUSTAINING THE AIRCRAFT WHEN SAID AIRFOIL WINGS OCCUPY SAID OUTWARD EXTENDED POSITIONS.
Claim 2
Dependent Claim
181 words
A CONVERTIBLE AIRCRAFT ADAPTED FOR HIGH SPEED FORWARD FLIGHT AND FOR VERTICAL TAKE-OFF AND LANDING INCLUDING A FUSELAGE, MEANS FOR FORWARD PROPULSION OF THE AIRCRAFT, WING ASSEMBLIES EXTENDING OUTWARDLY FROM OPPOSITE SIDES OF THE FUSELAGE, EACH WING ASSEMBLY COMPRISING A MOVABLE AIRFOIL WING DESIGNED TO PROVIDE LIFT FOR THE AIRCRAFT DURING HIGH SPEED FORWARD FLIGHT AND A STATIONARY ROOT MEMBER FIXED TO THE FUSELAGE AND EXTENDING LATERALLY THEREFROM FOR SUPPORTING SAID AIRFOIL WING, SAID ROOT MEMBER HOUSING A HELICOPTER ROTOR UNIT THEREIN INCLUDING A ROTOR DUCT AND A HELICOPTER ROTOR ROTATABLE WITHIN SAID DUCT ABOUT A VERTICAL AXIS, MEANS SLIDABLY SUPPORTING SAID AIRFOIL WING IN SPANWISE RECIPROCATIVE MOVEMENT ON SAID ROOT MEMBER FROM A RETRACTED POSITION WHEREIN THE AIRFOIL WING ABUTS THE FUSELAGE TO AN EXTENDED POSITION WHEREIN SAID HELICOPTER ROTOR UNIT IS EXPOSED, SAID AIRFOIL WING HAVING MEANS COMPLETELY ENCASING SAID ROOT MEMBER WHEN SAID AIRFOIL WING IS IN RETRACTED POSITION, AND POWER MEANS FOR DRIVING THE ROTORS OF SAID HELICOPTER ROTOR UNITS TO PROVIDE THE LIFT FOR SUSTAINING THE AIRCRAFT WHEN SAID AIRFOIL WINGS OCCUPY SAID OUTWARD EXTENDED POSITIONS.
References Cited (Backward Citations)
US1763454A
Cited
US1841936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |