Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1990-10-30
1992-07-07
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
405 91, E02B 720
Patent
active
051277662
ABSTRACT:
An air inflation/deflection weir having an air bag made of a flexible film attached to the bed and the vertical bank of a river. The weir is adapted to be inflated and deflated by charging and discharging air into and out 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 at predetermined valve. This inflates and raises the weir to a predetermined height in accordance with the detected water levels upstream and downstream of the weir. Maintaining the pressure inside the air bag, avoids abnormally high or low inner pressure of the air bag that would otherwise cause the air bag to burst or buckle resulting in a flood.
REFERENCES:
patent: 4728221 (1988-03-01), Tsuji et al.
"Technical Standards for the Collapsible Dam Made of Rubber Coated Cloth", edited by Ministry of Construction, published by the Foundation of National and Development Technology, Aug., 1983, pp. 67-71 and 53.
Maruyama Ichiro
Matsuoka Haruhiko
Tsuji Yoshiomi
Sumotomo Electric Industries, Ltd.
Taylor Dennis L.
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