Erratic bouncing ball

Details Erratic bouncing ball Erratic bouncing ball

1990-09-14

1991-07-02

Grieb, William H.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Projectile backstop

273 58K, A63B 4108, A63B 4300, A63B 6700

Patent

active

050280538

ABSTRACT:
A ball capable of providing an erratic, as well as a normal, bounce comprised of a hollow spherical member and, preferably, twenty-two integral hemispheric projections arranged in a predetermined pattern about the periphery of the spherical-shaped member. The projections are of uniform diameter which is a predetermined relationship to the diameter of the spherical-shaped member to achieve a desirable ergonomic effect. The cumulative volume of the hemispheric projections is substantially equal to one-half the volume of the spherical member and the radius of the spherical member is preferably of the order of 2.8 times the diameter of the projections. The game ball may be provided in the form of a kit including a cord having predetermined colored markers for creating the playing court which has a likeness of an international "PEACE" symbol. The projections may be provided with a similar "PEACE" symbol.

REFERENCES:
patent: 744718 (1903-11-01), Cassidy
patent: 2078382 (1937-04-01), Hanshaw
patent: 3948521 (1976-04-01), Warren

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