| 摘要 |
An apparatus, system and method for recharging depleted tennis balls that uses pressurized gas is disclosed. A pressure vessel includes a cylindrical shell with a closed end and a spaced apart and opening top connected by a wall to form a charging chamber. The vessel may be pivotally secured to a base. A port in the outer wall, closed end, or top of the vessel permits gas entry and exit for charging. The chamber is filled with an appropriate number of discharged tennis balls and then is sealed and charged with high pressure gas having a molecular weight heavier than air. The chamber is monitored to determine when the tennis balls have reached a desired internal pressure. Once the balls reach the desired internal pressure they are removed. |
