| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable expansion weir convenient to carry, rapidly assembled, folded and compactly stored and connected to each other to make the length adjustable. SOLUTION: A weir body 2 of this portable expansion weir 1 comprises a flexible cylinder body 3; a first connecting body 10 provided at one end 3a of the flexible cylinder body 3, and a second connecting body 30 provided at the other end 3b of the flexible cylinder body 3 and connected to the first connecting body 10. At least one of the first connecting body 10 and second connecting body 30 is provided with an air vent means 26. The first connecting body 10 is provided with a water filling part 20, and the second connecting body 30 is provided with a drain part 49. COPYRIGHT: (C)2003,JPO
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