Light weight boomerang toy having improved flight and return cha

Details Light weight boomerang toy having improved flight and return cha Light weight boomerang toy having improved flight and return cha

1992-08-05

1993-04-06

Shapiro, Paul E.

Amusement devices: games

Problem eliciting response

A63B 6508

Patent

active

051997177

ABSTRACT:
A light weight boomerang toy having several blades of unique configuration extending from a central hub. Each blade has a straight or uniformly curved leading edge and a scalloped trailing edge. The trailing edge of each blade decreases in thickness from a line having a specific relationship to the blade centerline to provide improved lift and flight characteristics. While the blades are ordinarily coplanar with the hub and each other, they can be bent or the boomerang dished if desired to modify flight characteristics. For improved safety, and to permit use of the boomerang indoors, it preferably is formed from a closed cell synthetic resin foam.

REFERENCES:
patent: 3710505 (1973-01-01), Linenfelser
patent: 3881729 (1975-05-01), Block et al.
patent: 4222573 (1980-09-01), Adler
patent: 4337950 (1982-07-01), Gidge
patent: 4421320 (1983-12-01), Robson
patent: 4452461 (1984-06-01), O'Brien
patent: 4479655 (1984-10-01), Adler
patent: 4591164 (1986-05-01), Blight
patent: 4856793 (1989-08-01), Hannifin
patent: 4934713 (1990-06-01), Hunter
patent: 5045011 (1991-09-01), Lovik

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