Patent ID: 6663520
Filing Date: 2003-12-16
Classification: A63B

Abstract:
A ball pocket bladder adapted for disposing in a ball carcass of a stitching ball for propping up and supporting said ball carcass, comprising:an inflatable bladder having a valve stem extended therefrom; and a construction ball pocket, which is made of fabric material and constructed to have a true roundness shape, having an interior receiving cavity defined therein to sealedly receive said inflatable bladder inside and a valve hole for said valve stem extended therethrough to an exterior of said construction ball pocket, wherein said construction ball pocket is arranged to retain a true roundness shape of said inflatable bladder after said inflatable bladder is inflated, wherein an outer spherical surface of said inflatable bladder is spaced apart from an inner spherical surface of said construction ball pocket so as to form an air cushion layer therebetween.