| 摘要 |
A novel one piece reserve ball holder having an integral device for attachment to a player's waistband or belt comprising a right cylinder structure having an interior diameter minimally smaller than that of a tennis ball, and long enough to accept and hold firmly two tennis balls, which while protruding one from each end are contained by the ball's inflated pressure and the binding friction and resistance to movement that occurs where the ball's outer surface comes into contact with the interior wall surface of the cylinder which is divided by a partition at the center of its length into two separate chambers each having a depth slightly greater than the ball's radius dimension and each chamber having near its open end in the sides of the tube two axially aligned openings of a length and width approximately half the ball's radius dimension to allow digital access for placing and removing the ball or balls from the holder.
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