Hot box detector system
    1.
    发明授权
    Hot box detector system 失效
    热箱检测系统

    公开(公告)号:US3994458A

    公开(公告)日:1976-11-30

    申请号:US543621

    申请日:1975-01-23

    IPC分类号: B61K9/04 B61L1/20 B61L3/12

    CPC分类号: B61K9/04 B61L1/20 Y10S116/38

    摘要: A normally inactive sound signal generator is supported from the rotatable axle of each railway car in a train and actuatable to generate a predetermined signal in response to a hot box condition. Electrically operable signal receivers coupled to electrically operable radio signal transmitters are spaced along the railroad track at predetermined intervals which may be 4,000 to 6,000 feet apart and the receivers and transmitters are operable on low magnitude current, such as provided in the rails of the track for Centralized Train Control Systems. The engine and caboose of a freight train are provided with radio signal receivers actuated by on-board current and the caboose receiver is operative to actuate visual and audible signals as well as an electrically operated air brake dump valve (through a time delay mechanism) and the engine receiver is operable to also actuate visual and audible signals and a relay (through a time delay mechanism) electrically connected to the engine electrical control system for automatically reducing the power output of the engine. If the hot box condition detected is too distant from the actuated track side radio signal generator to receive its low magnitude radio signal, then the low magnitude signal is received by the caboose mounted radio signal receiver as it passes close by the actuated trackside radio transmitter.

    摘要翻译: 一个通常不起作用的声音信号发生器从列车中的每个铁路车辆的可旋转轴支撑并且可致动以响应于热箱状况产生预定信号。 耦合到电可操作的无线电信号发射器的电可操作的信号接收器以预定的间隔沿着铁路轨道间隔开,该间隔可以是4,000至6,000英尺,并且接收器和发射器可在低电平电流上操作,例如设置在轨道的轨道中 集中列车控制系统。 货运列车的发动机和轿厢设有由车载电流驱动的无线电信号接收器,并且可以使用caboose接收器来致动视觉和听觉信号以及电动空气制动排放阀(通过延时机构)和 发动机接收器可操作以致动视觉和听觉信号,以及电连接到发动机电气控制系统的继电器(通过时间延迟机构),用于自动降低发动机的功率输出。 如果检测到的热箱条件与被致动的轨道侧无线电信号发生器相距太远以接收其低幅度无线电信号,则在由被驱动的轨道侧无线电发射机靠近的时候,由安装在驾驶的无线电信号接收机接收低幅度信号。

    Power controller for a heating/air conditioning unit
    2.
    发明授权
    Power controller for a heating/air conditioning unit 失效
    用于加热/空调单元的电源控制器

    公开(公告)号:US5838776A

    公开(公告)日:1998-11-17

    申请号:US701920

    申请日:1996-08-23

    IPC分类号: H04M11/00

    摘要: A power controller for a powered device such as a heating/air conditioning unit that monitors and controls the supply of power to an individual heating/air conditioning unit and shuts off power to the powered device when the voltage level of the power supplied to the unit falls outside a predetermined range. The power controller also transmits telephonic alarms and receives touch tone commands over telephone lines. The power controller may be equipped with a device for sensing the presence of a fire.

    摘要翻译: 用于诸如加热/空调单元的供电设备的功率控制器,其监测和控制向单个加热/空调单元供电,并且当提供给单元的电力的电压电平 落在预定范围之外。 电源控制器还通过电话线传输电话报警和接收触摸音命令。 功率控制器可以配备有用于感测火灾的设备。