Boomerang

Details Boomerang Boomerang

1987-12-03

1988-09-20

Shapiro, Paul E.

Amusement devices: games

Problem eliciting response

D21 85, A63B 6508

Patent

active

047720301

ABSTRACT:
A boomerang comprising a central hub having a generally central aperture therein, a plurality of equally spaced, cambered blades extending generally radially outwardly from the hub, a tip depending generally downwardly from each of the blades but one, the included angle between each blade and its respective tip being greater than 90.degree., and a weight on the blade without a tip so that the boomerang is mass balanced about an axis through the center of the hub. The included angle between each successive tip and its respective blade may increase in either the clockwise or counterclockwise direction around the boomerang.

REFERENCES:
patent: 692608 (1902-02-01), Bristow
patent: 2816764 (1957-12-01), Gleason
patent: 3403910 (1968-10-01), Claycomb
patent: 3881729 (1975-05-01), Block et al.
patent: 3955817 (1976-05-01), Davis
patent: 4479655 (1984-10-01), Adler
patent: 4506894 (1985-03-01), Laux et al.
patent: 4591164 (1986-05-01), Blight

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