Boomerang
OwnerDavid P. Robsoninventor
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Abstract
The disclosure is directed to a multi-arm boomerang with a structural configuration with permits simple modification of operational flight characteristics. The boomerang comprises a plurality of airfoil-shaped arms spaced about a central axis with an airfoil-shaped control device, preferably in the form of a ring, interconnecting the arms. By altering the cross sectional shape of the control device means, the flight characteristics of the boomerang may be modified. Furthermore, by constructing the disclosed boomerang of a resilient material there is created an entertainment device with safety features far in advance of those heretofore known.
Claims6
In a boomerang with a plurality of airfoil-shaped arms spaced about a central axis and extending outwardly thereabout the improvement wherein:
- the boomerang has a top surface and an opposing bottom surface and an airfoil-shaped lift producing control means interconnecting said plurality of arms, said control means being generally open-centered and symmetrical about said central axis, said airfoil-shaped arms providing a net lift toward said top surface, said control means providing a net lift toward said bottom surface for controlling lay down.
Dependencies are inferred from the claim text.