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    • 3. 发明申请
    • Natural gas alarm
    • 天然气报警器
    • US20100033336A1
    • 2010-02-11
    • US11888595
    • 2008-08-18
    • Gwendolyn Jones
    • Gwendolyn Jones
    • G08B17/10
    • G08B21/16
    • A combined natural gas and audible alarm device includes a circular-shaped housing. An internal power supply source is positioned in the housing and includes batteries. Threaded fasteners are supplied for mounting the device onto a support surface. The housing further encloses a natural gas detector, an audible alarm unit, and printed circuit board. A battery status light and a pushbutton switch are externally positioned on the front surface of the housing. The battery status light is illuminated whenever the battery level is low, notifying a person that the battery needs to be replaced. The pushbutton switch is depressed to test operation of the device. As natural gas is lighter than air and rises, the device is either wall or ceiling mounted.
    • 一种组合的天然气和声音报警装置包括一个圆形的壳体。 内部电源位于外壳中并包括电池。 提供螺纹紧固件用于将设备安装到支撑表面上。 外壳还包括天然气检测器,声音报警单元和印刷电路板。 电池状态指示灯和按钮开关外部位于外壳的前表面。 电池电量不足时,电池状态指示灯亮起,通知人员电池需要更换。 按下按钮开关来测试设备的操作。 由于天然气比空气轻,上升,装置是墙壁或天花板安装。