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92 条记录 (耗时 0.011 秒)

    Backflow prevention valve
    31.
    发明申请
    Backflow prevention valve 审中-公开
    防回流阀

    公开(公告)号：US20060016479A1

    公开(公告)日：2006-01-26

    申请号：US11187884

    申请日：2005-07-25

    申请人： Peter Gonzales

    发明人： Peter Gonzales

    IPC分类号： E03B9/02

    CPC分类号： E03C1/104 ,  E03B9/16 ,  Y10T137/5392

    摘要： The backflow prevention valve comprises various embodiments for installation in a liquid conduit for the prevention of reverse flow therethrough. The valve is particularly well suited for installation in a fire hydrant, where it prevents the illicit backflushing of the water system with contaminants. The valve may be constructed for use with either dry barrel hydrants, i.e., where the water is drained from the hydrant when the water is shut off, or wet barrel hydrants, where water remains in the hydrant body at all times. The valve may be constructed with a cylindrical body or with a thinner ring for the body, depending upon the installation desired. Each embodiment includes a series of generally triangular leaves hinged about the inner circumference of the valve body, which close against the central control rod or against one another at their apices when water is not flowing therethrough.

    摘要翻译： 防回流阀包括用于安装在液体管道中以防止逆流通过的各种实施例。 该阀特别适用于安装在消防栓中，防止水系统受到污染物的非法反冲洗。 阀门可以构造成与干桶消火栓一起使用，即当水被关闭时水从消火栓中排出，或湿桶消火栓，其中水总是保持在消火栓体内。 根据所需的安装，阀可以构造为具有圆柱形主体或具有用于身体的较薄环。 每个实施例包括围绕阀体的内周铰接的一系列大致三角形的叶片，当水没有流过其中时，它们在中心控制杆处或其顶部彼此靠近。

    Fire hydrant with a second valve
    32.
    发明申请
    Fire hydrant with a second valve 失效
    消防栓与第二个阀门

    公开(公告)号：US20050115609A1

    公开(公告)日：2005-06-02

    申请号：US10997733

    申请日：2004-11-23

    申请人： Thomas Davidson

    发明人： Thomas Davidson

    IPC分类号： E03B9/16 ,  F16K15/18

    CPC分类号： F16K27/006 ,  A62C37/20 ,  E03B9/16 ,  F16K15/18 ,  Y10T137/1654 ,  Y10T137/5327 ,  Y10T137/5485 ,  Y10T137/7929 ,  Y10T137/7932 ,  Y10T137/88054

    摘要： Fire hydrants which feature additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include valves which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open. Such valves preferably open, manually or automatically, when water is flowing from the water supply through the nozzle, a condition which renders it difficult at best to introduce toxins through the hydrant into a water supply, but close off portions of the barrel when the nozzle is open and water is not flowing through the nozzle.

    摘要翻译： 消防栓具有额外的结构，以减少潜在的意图，通过将毒素或其他材料引入消防栓来对市政供水造成污染。 各种实施例包括当消防栓喷嘴帽被拧开并打开时，关闭消防栓的部分，否则可用于接收有毒或其它材料的阀。 当水从水源通过喷嘴流动时，这种阀门最好是手动地或自动地打开，这种情况使得难以最大限度地将毒素通过消防栓引入供水管中，但是当喷嘴 是开放的，水没有流过喷嘴。