US3603700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating circular wing
Assignee: Individual
•
Filing: 1969-05-19
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Granted: 1971-09-07
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Expires: 1989-05-19
Abstract
Abstract A propulsion device for vertical takeoff and landing type aircraft consisting of one or more rotary circular wings; the wings being of circular shape but having standard airfoil cross sections with vanes on the surfaces to cause air to pass radially outwardly over the airfoil surfaces. Lift is produced by air passage over the airfoil surfaces in a manner similar to standard aircraft wings, but high velocity air flow and high lift is feasible regardless of the speed of the aircraft.
Inventors
- 👤 Michael Eskeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:28
CPC Classifications
B; B64; B64C; B64C39/00; B64C39/06; B64C39/062; B64C39/064
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
194 words
In a vertical takeoff and landing type aircraft having a power means rotating a substantially vertically mounted shaft, having a lifting means connected with said shaft for effecting lift in response to rotAtion of said shaft; and having means for controlling pitch and roll of said aircraft with respect to said shaft; the improved lifting means comprising: a. an airfoil that is circular in shape and that is disposed concentrically about said shaft; said airfoil having a curved upper lifting surface to take advantage of the Bernoulli effect of conventional airfoils and having a substantially flat bottom surface that is tilted to effect lift from ram air pressure, and having a predetermined angle of attack; said airfoil having its lifting surfaces disposed substantially perpendicular to radials from said shaft so as to effect lift in response to flow of air radially outwardly from said shaft; b. spoke means connecting said airfoil with said shaft; and c. vanes disposed on said airfoil so as to effect flow of air centrifugally radially outwardly over said airfoil for effecting via speed of rotation of said airfoil any degree of lift regardless of the speed of said aircraft.
Claim 2
Dependent Claim
194 words
In a vertical takeoff and landing type aircraft having a power means rotating a substantially vertically mounted shaft, having a lifting means connected with said shaft for effecting lift in response to rotAtion of said shaft; and having means for controlling pitch and roll of said aircraft with respect to said shaft; the improved lifting means comprising: a. an airfoil that is circular in shape and that is disposed concentrically about said shaft; said airfoil having a curved upper lifting surface to take advantage of the Bernoulli effect of conventional airfoils and having a substantially flat bottom surface that is tilted to effect lift from ram air pressure, and having a predetermined angle of attack; said airfoil having its lifting surfaces disposed substantially perpendicular to radials from said shaft so as to effect lift in response to flow of air radially outwardly from said shaft; b. spoke means connecting said airfoil with said shaft; and c. vanes disposed on said airfoil so as to effect flow of air centrifugally radially outwardly over said airfoil for effecting via speed of rotation of said airfoil any degree of lift regardless of the speed of said aircraft.
Claim 3
Dependent Claim
28 words
The aircraft of claim 1 wherein said improved lifting means comprises a plurality of said air foils, each with its said spoke means and its said vane means.
Claim 4
Dependent Claim
62 words
The aircraft of claim 2 wherein said plurality of airfoils comprise a large said airfoil disposed concentrically about a smaller said airfoil; said airfoils are connected with said power means so as to rotate in opposite directions; and the respective sets of vane means are adapted to effect series of flow of air over the counter rotating smaller airfoil and large airfoil.
Claim 5
Dependent Claim
29 words
The aircraft of claim 3 wherein said vanes in each said set of vanes are disposed with their interior edges leading their exterior edges in the direction of rotation.
Claim 6
Dependent Claim
14 words
The aircraft of claim 1 wherein said vanes are substantially parallel with respective radials.
Claim 7
Dependent Claim
23 words
The aircraft of claim 1 wherein said vanes are disposed with their interior edges leading their exterior edges in the direction of rotation.
References Cited (Backward Citations)
GB114919A
Cited
CA596718A
Cited
FR543399A
Cited
FR626660A
Cited
US1971820A
Cited
CH286849A
Cited
US3504990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |