Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1975-10-31
1978-07-04
Marlo, George J.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
273 65ED, 273DIG20, A63B 4100
Patent
active
040985040
ABSTRACT:
A pressurized game ball including an air-permeable elastomeric wall defining a cavity containing a compressible inflation gas with the improvement being that the inflation gas includes predetermined mixed amounts of air and sulfur hexafluoride (SF.sub.6) 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.
REFERENCES:
patent: 2012283 (1935-08-01), Miller
patent: 3047040 (1962-07-01), Gross
patent: 3819040 (1974-06-01), Coons
"Flow of Gases through Polyethylene" Journal of Polymer Science, vol. L, 1961, pp. 413-439.
Koziol Dale Lee
Reed Thomas Freeman
Marlo George J.
The General Tire & Rubber Company
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