Inflated game ball having long lasting pressure retention with d

Details Inflated game ball having long lasting pressure retention with d Inflated game ball having long lasting pressure retention with d

1979-07-25

1981-11-17

Marlo, George J.

Amusement devices: games

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

Target

273 58F, A63B 4100

Patent

active

043007678

ABSTRACT:
A pressurized game ball including an elastomeric wall defining a cavity containing a compressible inflation gas that includes predetermined mixed amounts of air and a low permeability gas which effectively enables the ball to retain its pressurized state within a desired range of pressures for a period of time significantly longer than the ball would remain pressurized if the inflation gas were air alone with the improvement being that the noise ( a "ping" sound) resulting when an aforesaid gas system is caused to resonate is substantially lessened by including an amount of material sufficient to disturb the sonic resonance in the ball cavity. The best anti-ping material is polyurethane foam, and it may be in the form of a cube weighing less than 0.3 gram.

REFERENCES:
patent: 1402682 (1922-01-01), Takashima
patent: 3119618 (1964-01-01), Molitor et al.
patent: 3558413 (1971-01-01), Wall
patent: 4031688 (1977-06-01), Wasserman
patent: 4098504 (1978-07-01), Koziol

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