Patent ID: 8974329
Filing Date: 2015-03-10
Classification: A63B

Abstract:
1. A method for forming an inflatable ball carcass having a sponge layer, the method comprising: providing an inflatable bladder and a plurality of outer layer sheets; providing two foamed sponge layer sheets, each foamed sponge layer sheet having a first side and a second side, and a plurality of leaves extending from a center, the leaves shaped so that the foamed sponge layer sheet can be folded into substantially the shape of a hemisphere with substantially no gap remaining between each pair of adjacent leaves; placing the outer layer sheets on the first side of each foamed sponge layer sheet so that the foamed sponge layer sheet is substantially covered by the outer layer sheets; placing the bladder on the second side of each foamed sponge layer sheet so that the foamed sponge layer sheets substantially cover the bladder to form a semi-finished ball carcass; and heat molding the semi-finished ball carcass to form an inflatable ball carcass having a sponge layer.