Visual alarm device interconnectable to existing monitoring circuitry
    1.
    发明授权
    Visual alarm device interconnectable to existing monitoring circuitry 失效
    与现有监控电路相连的视觉报警装置

    公开(公告)号:US5008655A

    公开(公告)日:1991-04-16

    申请号:US438083

    申请日:1989-11-20

    IPC分类号: G08B29/02

    CPC分类号: G08B29/02

    摘要: A visual alarm device monitors the condition of a control and indication circuit and gives a distinct visual alarm upon detection of an abnormal condition in the monitored circuit. The device uses the indicator lights of the monitored circuit itself to give the visual alarm. The alarm device interconnects with the monitored circuit locally requiring no new cabling and remains in a passive state until an abnormal condition is detected. When the monitored circuit is rendered inoperative by a thermal overload trip, the alarm device becomes active to flash the indicator lights to provide a distinct visual alarm. Included in the device is a test switch, an appropriate voltage converter, an oscillator, and a power indication light.

    摘要翻译: 视觉报警装置监视控制和指示电路的状况,并在检测到监控电路中的异常情况时给出明显的视觉报警。 该设备使用监控电路本身的指示灯给出视觉报警。 报警装置与本地监控的电路互连,不需要新的布线,并保持在被动状态,直到检测到异常情况。 当被监控的电路由于热过载跳闸而使其无法工作时,报警装置将被激活以闪烁指示灯以提供明显的视觉报警。 设备中包括测试开关,适当的电压转换器,振荡器和电源指示灯。

    Geometrically Variable Filter Underdrain Header
    2.
    发明申请
    Geometrically Variable Filter Underdrain Header 审中-公开
    几何可变过滤器漏斗头

    公开(公告)号:US20080121580A1

    公开(公告)日:2008-05-29

    申请号:US11563309

    申请日:2006-11-27

    IPC分类号: B01D24/00

    摘要: An embedded geometrically variable filter underdrain header and a method for constructing such a filter. Often the variation is a decrease in cross section along the header from the backwash media source, which avoids a pressure loss as liquid is diverted to the laterals along the header. The header is formed inside a filter underdrain basin and is embedded in the basin. The method for constructing the basin and header includes providing a mold for the basin and the header and filling the molds with concrete by pouring concrete into the area between the interior of the mold for the basin and the exterior of the mold for the header. After the concrete cures, the mold for the basin may or may not be removed, while the mold for the header is kept in place.

    摘要翻译: 一种嵌入式几何可变滤波器底划线头和一种用于构造这种滤波器的方法。 通常,这种变化是沿反冲洗介质源的集管部分的横截面减小,这避免了当液体转移到沿着集管的侧壁时的压力损失。 头部形成在过滤器底下盆地内并嵌入盆中。 用于构造盆和头部的方法包括:将混凝土浇注到用于盆地的模具的内部和用于集管的模具的外部之间的区域中,为盆地和集水器提供模具和模具填充模具。 在混凝土固化之后,用于盆的模具可以被移除,也可以不被去除,而用于头部的模具保持在适当位置。