| 摘要 |
An ovoid inflatable ball, such as a rugby ball, has an inflatable bladder (10) with an inflation valve assembly (2) in the stitched seam (3) between adjacent cover panels (1a, 1b). The valve (not shown) has an inflation tube (5) upstanding from the base (8) of a channel (7) formed in a flange member (4) which lies over or embraces the valve for inflating the bladder (10). The channel receives the inturned stitched edges of seam (3) and the inflation tube (5) passes through the seam (3) and is permanently accessible. Much improved ballistic properties result from the construction especially as regards kicking.
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