Pressurized, non-refillable recreation ball inflated with sulfur hexafluoride
AssigneeAir Products and Chemicals, Inc.
InventorsJohn Papinsick, John J. Oransky, Shivaji Sircar
Life of this patent
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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.
Claims6
A pressurized, non-refillable recreation ball inflated with a mixture of sulfur hexafluoride and air to maximize shelf life and play characteristic retention wherein the sulfur hexafluoride is present in a range of 65% to 75% by volume of the total gas content of said ball.
Dependencies are inferred from the claim text.