| 摘要 |
An inflatable device, such as a sport ball, includes a tubular elastomeric member inserted into and attached to a rubber carcass and having a valve slit at a bottom wall thereof. A tubular rigid stem is inserted into a receiving hole in the elastomeric member and is spaced apart from the valve slit so as not to deform the valve slit. The rigid stem confines a passage communicating with the valve slit to admit ambient air into the carcass via the passage and the valve slit.
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