| 摘要 |
PROBLEM TO BE SOLVED: To provide a floating tube suitable for play equipment and lifesaving, and a floating tube system having the floating tube. SOLUTION: The floating tube system 10 is composed of a bag 2, a four-folded floating tube 5 stored in the bag 2, a compressed gas cylinder type gas introducing means 3 and a manual gas introducing means 4. A Y-shaped type introducing part 1 for introducing gas into the floating tube 5 is provided with a back-flow prevention valve compatible with the joint part 31 of the compressed gas cylinder type gas introducing means 3 and the joint part 41 of the manual gas introducing means 4 respectively. COPYRIGHT: (C)2009,JPO&INPIT
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