Pressurized, non-refillable recreation ball inflated with sulfur

Details Pressurized, non-refillable recreation ball inflated with sulfur Pressurized, non-refillable recreation ball inflated with sulfur

1981-04-02

1982-11-09

Marlo, George J.

Amusement devices: games

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

Target

A63B 4100

Patent

active

043581110

ABSTRACT:
A pressurized, non-refillable recreation ball inflated with a mixture of sulfur hexafluoride and air for improved shelf life and pressure retention is obtained by filling the ball with sulfur hexafluoride in a range of 65% to 75% by volume and 35% to 25% by volume of air. Preferably, the sulfur hexafluoride is present in an amount of 71% by volume. The recreation balls include tennis balls, racquet balls, squash balls, handballs and other non-refillable pressurized balls.

REFERENCES:
patent: 3047040 (1962-07-01), Gross
patent: 4098504 (1978-07-01), Koziol
patent: 4166484 (1979-09-01), Reed
patent: 4340626 (1982-07-01), Rudy

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