| 摘要 |
PURPOSE:To enable operation of a device only by a single hand when it is used as a lifesaving signal tool and to improve portability, by a method wherein a device filling a balloon with gas, being lighter than air, is contained in the one of spherical parts. CONSTITUTION:A device 3, filling a balloon with gas lighter than air, is contained in the one of the spherical parts of the balloon formed in the shape of a gourd and having a throttled central part forming a long cylindrical pipe 2.
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