US4195439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy flying object
Assignee: Individual
•
Filing: 1978-04-13
•
Granted: 1980-04-01
•
Expires: 1998-04-13
Abstract
Abstract A toy flying object consists of a single wing which is shaped and weighted to provide aerodynamic capabilities. The single wing structure is readily and simply manufactured.
Inventors
- 👤 Dale C. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/001
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
170 words
A toy free flight flying object which is substantially non-flexible in flight and consists essentially of a single generally planar element without stabilizing members upstanding from said plane, whereby said element has close to neutral lateral stability, said planar element having forward and rearward effective parallel edges and generally continuous smooth upper and lower surfaces, said planar element being substantially symmetrical about a centre line extending between said forward and rearward edges and lying within a rectangle, said planar element having a cross-sectional shape wherein at least the upper surface thereof undulates between said forward and rearward edges with a convex upper surface towards the forward edge and a concave upper surface towards the rearward edge, said cross-sectional shape establishing an aerodynamic centre of said planar element located sufficiently close to said forward edge to impart longitudinal stability to said planar element, said planar element being weighted towards said forward edge thereof to establish a centre of gravity of said flying object which is located forwardly of said aerodynamic centre.
Claim 2
Dependent Claim
170 words
A toy free flight flying object which is substantially non-flexible in flight and consists essentially of a single generally planar element without stabilizing members upstanding from said plane, whereby said element has close to neutral lateral stability, said planar element having forward and rearward effective parallel edges and generally continuous smooth upper and lower surfaces, said planar element being substantially symmetrical about a centre line extending between said forward and rearward edges and lying within a rectangle, said planar element having a cross-sectional shape wherein at least the upper surface thereof undulates between said forward and rearward edges with a convex upper surface towards the forward edge and a concave upper surface towards the rearward edge, said cross-sectional shape establishing an aerodynamic centre of said planar element located sufficiently close to said forward edge to impart longitudinal stability to said planar element, said planar element being weighted towards said forward edge thereof to establish a centre of gravity of said flying object which is located forwardly of said aerodynamic centre.
Claim 3
Dependent Claim
49 words
The flying object of claim 1, wherein said cross-sectional shape of said planar element also includes a lower surface which undulates between the forward and rearward edges with a concave lower surface corresponding to said convex upper surface and a convex lower surface corresponding to said concave upper surface.
Claim 4
Dependent Claim
21 words
The flying object of claim 2, wherein said planar element tapers in thickness between said forward edge and said rearward edge.
Claim 5
Dependent Claim
29 words
The flying object of claim 1, wherein said planar element is weighted by at least one generally U-shaped clip member mounted on the forward edge of said planar element.
Claim 6
Dependent Claim
160 words
A toy free flight flying object which is substantially non-flexible in flight and consisting essentially of an integrally-formed substantially rigid generally rectangular and planar element having a forward longitudinal edge and a rearward longitudinal edge and generally continuous smooth upper and lower surfaces without stabilizing members upstanding therefrom, whereby said element has substantially neutral lateral stability, said element having a thin cross-sectional dimension and a cross-sectional shape which undulates between said forward edge and said rearward edge with convexo-concave upper and lower surfaces towards the forward edge and concavo-convex upper and lower surfaces towards the rearward edge, said cross-sectional shape imparting longitudinal stability to said element and establishing an aerodynamic centre of said body members located less than about 25% of the linear distance from said forward edge to said rearward edge, said element member being weighted towards said forward edge thereof to establish a centre of gravity of said flying object which is located forwardly of said aerodynamic centre.
Claim 7
Dependent Claim
160 words
A toy free flight flying object which is substantially non-flexible in flight and consisting essentially of an integrally-formed substantially rigid generally rectangular and planar element having a forward longitudinal edge and a rearward longitudinal edge and generally continuous smooth upper and lower surfaces without stabilizing members upstanding therefrom, whereby said element has substantially neutral lateral stability, said element having a thin cross-sectional dimension and a cross-sectional shape which undulates between said forward edge and said rearward edge with convexo-concave upper and lower surfaces towards the forward edge and concavo-convex upper and lower surfaces towards the rearward edge, said cross-sectional shape imparting longitudinal stability to said element and establishing an aerodynamic centre of said body members located less than about 25% of the linear distance from said forward edge to said rearward edge, said element member being weighted towards said forward edge thereof to establish a centre of gravity of said flying object which is located forwardly of said aerodynamic centre.
Claim 8
Dependent Claim
58 words
The flying object of claim 5, wherein said convexo-concave upper and lower surfaces extend substantially from the forward edge of said element to approximately the midpoint of the distance between said forward and rearward edges and said concavo-convex upper and lower surfaces extend substantially from said rearward edge to the termination of said convexo-concave upper and lower surfaces.
Claim 9
Dependent Claim
21 words
The flying object of claim 6, wherein said centre of gravity is located between said aerodynamic centre and said forward edge.
Claim 10
Dependent Claim
36 words
The flying object of claim 7, wherein said element is weighted by at least one U-shaped clip member located on the forward edge of said element with the legs thereof engaging the upper and lower surfaces.
Claim 11
Dependent Claim
24 words
The flying object of claim 8, wherein one of the legs of said clip member is shorter in length than the other such leg.
Claim 12
Dependent Claim
32 words
The flying object of claim 8, wherein said at least one clip member is symmetrically arranged on said forward edge with respect to the mid-point of the length of said forward edge.
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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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |