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    • 2. 发明申请
    • FLOOD PROTECTION FOR UNDERGROUND AIR VENTS
    • 地下通风口的防洪
    • WO2018075914A1
    • 2018-04-26
    • PCT/US2017/057629
    • 2017-10-20
    • WATERS, Louis, A. Jr.
    • WATERS, Louis, A. Jr.
    • E06B7/02E04H9/14G08B5/02E06B7/14E21F1/10E21F1/14F24F7/04
    • Apparatus for allowing ventilation for underground tunnels through a ventilation shaft opening to atmosphere yet preventing underground flooding from surface waters pouring through the grate comprises an assembly that fits within the ventilation shaft and includes one or more panels mounted on a pivot axis and rotatable upwardly by human action raising the panel past a center point of the pivot axis to an upright inwardly leaning home position that allows ventilation as usual but by manual push or pull of the panels past the center point of the pivot axis lets the panels rotationally fall under gravitational impetus to a lower sealing position closing a passage between the ventilation shaft and atmosphere to prevent water from entering the underground tunnels.
    • 用于允许地下隧道通过穿过大气的通风井通风而防止通过格栅倾倒地表水的地下淹没的设备包括装配在通风井内的组件,该组件包括安装在通风井中的一个或多个面板 枢转轴线并且可以通过人的作用向上转动,使面板通过枢转轴线的中心点而上升到直立的向内倾斜的原始位置,该位置允许像通常那样进行通风,但是通过手动推动或拉动面板越过枢转轴线的中心点 面板在重力的推动下转动到一个较低的密封位置,封闭了通风井和大气之间的通道,以防止水进入地下通道。