E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/38
E02B 7/20 (2006.01)
Patent
CA 2028543
An air inflation/deflation weir having an air bag made of a flexible film attached to the bed and the vertical bank of a river and adapted to be inflated and deflated by charging and discharging air into and from the inside of the air bag, wherein the effect of the change of the atmospheric air temperature on the inner pressure of the air bag is eliminated and the inner pressure of the air bag is always maintained to a predetermined value so as to inflate and rise the weir to a predetermined height in accordance with the detected water levels at the upstream and the downstream of the weir. An abnormally high or low inner pressure of the bag air which would otherwise cause burst or buckling of the air bag, or lead to flooding disaster can be prevented.
Maruyama Ichiro
Matsuoka Haruhiko
Tsuji Yoshiomi
Riches Mckenzie & Herbert Llp
Sumitomo Electric Industries Ltd.
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