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    Electrical heating cable with indicator light and manual test device
    7.
    发明授权
    Electrical heating cable with indicator light and manual test device 失效
    带指示灯和手动测试装置的电加热电缆

    公开(公告)号：US3851149A

    公开(公告)日：1974-11-26

    申请号：US42026373

    申请日：1973-11-29

    申请人： SMITH GATES CORP

    发明人： DALEY W

    IPC分类号： H01H9/02 ,  H05B3/56 ,  H05B3/36

    CPC分类号： H05B3/56 ,  H01H9/0228

    摘要： An elongated flexible electrical resistance heating cable adapted to be wrapped about water pipes and for other similar uses. A cold lead extends to the cable and a thermostat is interposed between the cold lead and the cable with a translucent and flexible envelope thereabout. A small indicator light within a second translucent envelope is connected in parallel with the heating cable and operates to reflect visually operation of the thermostat. A test device in the first envelope comprises a small spring metal conductor connected at one end with one thermostat terminal and having an opposite end movable toward and away from a second thermostat terminal. Manual deflection of the envelope against the conductor urges the same into contact with the terminal whereby to close the circuit for testing of the heating cable and release of manual pressure opens the circuit.

    摘要翻译： 一种细长的柔性电阻加热电缆，适用于围绕水管缠绕和用于其他类似用途。 冷引线延伸到电缆，并且恒温器介于冷引线和电缆之间，其周围具有半透明和柔性的封装。 第二透明封套内的小指示灯与加热电缆并联连接，并可操作以反映恒温器的视觉操作。 第一封套中的测试装置包括一个小的弹簧金属导体，其一端连接有一个恒温器端子，并且具有可朝向和远离第二恒温器端子移动的相对端。 信封对导体的手动偏转促使其与端子接触，从而关闭用于测试加热电缆的电路并释放手动压力打开电路。