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2. 发明授权

US4660126A Fire-preventive housing for line delay measuring apparatus 失效
标题翻译：线路延迟测量装置防火外壳
公开(公告)号：US4660126A
公开(公告)日：1987-04-21
申请号：US678631
申请日：1984-12-06
申请人： Hans Koster , Horst Weiler
发明人： Hans Koster , Horst Weiler
IPC分类号： G01R31/11 , H05K5/00 , H05K7/00
CPC分类号： H05K5/0017 , G01R31/11
摘要： A fire-preventive and flame-proof housing for line delay measuring apparatus, the components including a high-tension voltage supply, a display tube and operating elements and indicator elements, comprises a first section defined within the housing in which are positioned components carrying relative low voltages and without significant fire hazard, a second section defined within the housing adjacent to the first section, wherein are positioned those of the components carrying high voltages, and such components as are otherwise intrinsically unsafe, the second section being hermetically sealed and filled with insulating material. The housing includes a front panel and a partition separating the first and second sections, a cover is detachably mounted on the housing and sealed relative thereto by a resilient sealing element about an aperture of the housing. Potentiometers for focus and intensity functions of the display tube are positioned in the second section, and a potentiometer spindle and selector switch spindles extend from the second section through the partition to the front panel, with sealing between the partition and the spindles and between the spindles and the front panel. The display tube face is preferably positioned in a partition opening, and a hermetically inset glass pane mounted on the front panel for viewing the tube from the front panel.
摘要翻译：一种用于线路延迟测量装置的防火和防火外壳，包括高压电压源，显示管和操作元件和指示元件的部件包括限定在壳体内的第一部分，其中定位的部件承载相对低电压且没有明显的火灾危险，第二部分限定在与第一部分相邻的壳体内，其中定位为承载高电压的部件的那些，以及其它本质上不安全的部件，第二部分被气密地密封并填充绝缘材料。壳体包括前面板和分隔第一和第二部分的隔板，盖可拆卸地安装在壳体上并且通过围绕壳体的孔的弹性密封元件相对于其密封。用于显示管的聚焦和强度功能的电位器位于第二部分中，并且电位器主轴和选择器开关主轴从第二部分通过隔板延伸到前面板，在分隔件和心轴之间以及心轴之间的密封和前面板。显示管面优选地定位在分隔开口中，并且安装在前面板上的气密插入玻璃板用于从前面板观察管。

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