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US 5,947,785 AGranted
Flying wing toy
OwnerLuc Bauschinventor
Life of this patent
Estimating the term…
Abstract
A flying wing toy including a rigid planar body, a wing of flexible sheet material affixed to the body and preshaped with flexible leading and lateral edges and flexible, flanking stabilizers extending rearwardly, a propeller rotatably mounted to the front end of the body, and a manually actuated rotational drive unit comprising an elastic member mounted on the body and coupled to the propeller.
Claims27
A flying wing toy comprising:
- a flexible wing sheet defining a wing body symmetrical about a longitudinal roll axis and formed with a leading section projecting forwardly to terminate in respective leading edges;
- and
- a rigid longitudinal body affixed to said wing and extending along said roll axis to provide structural support to said wing;
- and
- a wing spar, projecting laterally to said body, affixed to said wing section at a predetermined distance behind the respective said leading edges to leave said leading sections free to flex upwardly to impart positive pitch to said wing relative to a latitudinal pitch axis;
- and
- a propeller rotationally mounted on the front end of said longitudinal body anterior to said leading edge;
- and
- a drive unit including an energy storage device mounted to said body and coupled to said propeller to rotationally drive said propeller, whereby said energy storage device is actuated to store energy for driving said propeller and when said propeller is released to rotate and drive said Flying Wing Toy forwardly to climb upwardly such that when said toy reaches the top of said climb and pitches over to start it descent said leading edges will flare upwardly relative to said spar to cause air flowing over said wing section to impart a positive pitch to said toy to cause said toy to descend with a relatively low angle of attack glide path.
6 more elements
A toy airplane comprising:
- a one-piece flexible sheet formed at its forward extremity with a transversely projecting wing section having a forwardly disposed flexible leading edge section, said sheet tapering aft and inboard from said wing section along its opposite outboard edges, said sheet being further formed with a pair of rearwardly projecting laterally spaced apart stabilizers;
- a transverse balsa wood spar stick disposed under said wing section;
- a longitudinally projecting balsa wood spar stick disposed centrally under said sheet;
- adhesive tape strips securing the opposite ends of said transverse spar stick and said longitudinal stick to the underside of said sheet to be suspended therefrom;
- a hub fitting fitted over the forward end of said longitudinal stick and rotatably mounting a propeller therefrom;
- and
- an elastic band secured between said propeller and the aft end of said longitudinal stick for storing energy therein for rotation of said propeller.
4 more elements
A flying wing toy kit, comprising:
- a flexible sheet of wing material configured with contoured edges to form a wing symmetrical about a longitudinal roll axis with leading edges, lateral edges, and rearwardly extending, flanking stabilizers laterally spaced apart about said roll axis and free to flex at the rear extremities into the partial vacuum created by a laminar air flow over said wing to stabilize said wing about a vertical yaw axis and to impart positive pitch to said wing relative to a latitudinal pitch axis;
- a frame including a longitudinal body to be positioned along said roll axis of said wing and a wing spar of predetermined length disposed at right angles to said longitudinal body to be positioned at a predetermined distance behind said leading edge to allow said leading edge to flex into said vacuum to impart positive pitch to said wing about said pitch axis, said wing spar to be further positioned between said lateral edges to allow said lateral edges to flex into said vacuum to stabilize said wing about said roll axis;
- attachment means to attach said frame members to said wing member;
- a propeller rotatably mountable to the fore end of said longitudinal body;
- an anchor to mount to the aft end of said longitudinal body;
- and
- an elastic band for connection to said propeller and to said anchor, said band being torsionally deformable to store energy therein.
4 more elements
A method for constructing a toy airplane comprising the steps of:
- selecting a flexible sheet of material configured with contoured edges to form a wing symmetrical about a longitudinal roll axis, including flexible leading edges, lateral edges and a body having rearwardly extending stabilizers;
- selecting a balsa wood stick of predetermined length to form a wing spar;
- mounting said wing spar to said wing laterally to said roll axis, aft of said leading edges;
- selecting a balsa wood stick configured to form a longitudinal body;
- mounting said longitudinal body to said wing along said roll axis such that said longitudinal body passes over said wing spar;
- selecting a propeller;
- attaching said propeller to said longitudinal body, by a propeller mount;
- selecting an anchor;
- mounting said anchor to said longitudinal body spaced from said propeller mount;
- coupling an elastic band to said propeller and to said anchor.
7 more elements
Dependencies are inferred from the claim text.