Non-destructive status determination for electric power cables
    1.
    发明授权
    Non-destructive status determination for electric power cables 失效
    电力电缆的非破坏性状态确定

    公开(公告)号:US5101161A

    公开(公告)日:1992-03-31

    申请号:US598859

    申请日:1990-10-12

    CPC classification number: G01R31/021

    Abstract: Method and apparatus for identifying and determining the energization status of a cable having a conductive neutral member and an internal resistive screen layer involving probes radially movable relative to the cable to contact the neutral member and the internal resistive screen. Narrow-band AC signals and resistance measurements are utilized for self-testing and for cable testing. A microprocessor controls probe-heating in the advancing of probes through plastic sheath to reach the neutral wire and resistive screen layer. Resistance measurements made under control of the microprocessor are monitored with probe advance. Oscillators provide two signals of different frequencies, one of which is that of the power being transmitted through the cable, to provide distinctive signals indicative of cable energization status.

    Abstract translation: 用于识别和确定具有导电中性构件和内部电阻屏蔽层的电缆的通电状态的方法和装置,其涉及可相对于电缆径向移动的探针,以接触中性构件和内部电阻屏。 窄带交流信号和电阻测量用于自检和电缆测试。 微处理器通过塑料护套控制探针在探针中的行进,以达到中性线和电阻屏层。 在微处理器的控制下进行的电阻测量用探针提前监测。 振荡器提供两个不同频率的信号,其中一个是通过电缆传输的功率信号,以提供指示电缆通电状态的独特信号。

    Insect control apparatus and method
    2.
    发明授权
    Insect control apparatus and method 失效
    昆虫控制装置及方法

    公开(公告)号:US6088949A

    公开(公告)日:2000-07-18

    申请号:US36123

    申请日:1998-03-06

    CPC classification number: A01M1/223 A01M1/023 A01M1/226 A01M2200/012

    Abstract: A method and apparatus for attracting insects, especially black flies, sand flies and mosquitoes, in which the physical effects associated with the skin areas of prey-animals are simulated. Basic elements of a first embodiment of the apparatus include warmed elastic-walled holders of pulsed fluid which may be in the form of elastic tubing through which warm fluid flows in pulses arranged to produce various physical effects. Power for fluid heating and pulsing action may be provided by solar electrical, mechanical, nuclear, chemical or other source. Basic elements of a second embodiment of the apparatus include a weak spring suspended from a support and coupled to a vibration generator. The spring includes a deformable skin-like membrane therearound. Vibration is imparted to the spring and transmitted to the membrane to produce physical effects associated with movement of a skin surface of a prey animal. A heater may also be provided to heat the skin-like surface. A still further embodiment includes an exciter and a traveling wave transmitting member. The exciter is moved relative to the traveling wave transmitting member to impart a traveling wave therein to attract insects to the apparatus. Killing of insects or collection of live or dead insects may be accomplished by trapping or execution electrically, mechanically, or chemically. In a preferred embodiment, the wave transmitting member and collector/killer element are combined into an integral unit. This unit may be removed and replaced as necessary.

    Abstract translation: 一种用于吸引昆虫,特别是黑蝇,沙蝇和蚊子的方法和装置,其中模拟与猎物皮肤区域相关的物理作用。 该装置的第一实施例的基本元件包括温暖的脉冲流体的弹性壁保持器,其可以是弹性管的形式,热流体通过该弹性管流动,脉冲布置成产生各种物理效应。 用于流体加热和脉动作用的功能可以由太阳能电力,机械,核,化学或其他来源提供。 装置的第二实施例的基本元件包括从支撑件悬挂并联接到振动发生器的弱弹簧。 弹簧包括一个可变形的皮肤状膜。 振动被施加到弹簧并传递到膜以产生与猎物动物的皮肤表面的运动相关的物理效应。 还可以提供加热器来加热皮肤状表面。 又一实施例包括励磁机和行波传输部件。 励磁机相对于行波传递部件移动,以在其中传播行波以将昆虫吸引到设备。 杀死昆虫或收集活的或死亡的昆虫可以通过电,机械或化学捕获或执行来实现。 在优选实施例中,波发射部件和集电极/激光器元件组合为一体的单元。 必要时可以拆卸和更换本机。

    Cable status testing
    3.
    发明授权
    Cable status testing 失效
    电缆状态测试

    公开(公告)号:US4760327A

    公开(公告)日:1988-07-26

    申请号:US928872

    申请日:1986-11-10

    CPC classification number: G01R31/021

    Abstract: A method and system for determining the status of power distribution cables which involves the removal of a plug from the sheath which is tiny relative to the size of the cable to expose an area of resistive material which may be probed to detect the presence or absence of a signal of predetermined frequency. The apparatus is equipped with self-testing circuits as well as circuits for determining resistance between the resistive layer and the sheath, whereby positive identification of the cable to be tested is assured. The apparatus is clamped directly to the cable and is controlled from a remote location, which protects the operator of the equipment. The plug removed from the sheath is cut and extracted by a tool which is also subject to remote control by the operator.

    Abstract translation: 一种用于确定配电电缆的状态的方法和系统,其包括从护套中移除塞子,该插头相对于电缆的尺寸是微小的,以暴露电阻材料的区域,该区域可被探测以检测是否存在 预定频率的信号。 该装置配备有自检电路以及用于确定电阻层和护套之间的电阻的电路,从而确保要测试的电缆的正确识别。 该设备直接夹在电缆上,并从远程位置进行控制,从而保护设备的操作人员。 从护套中取出的塞子被切割并通过操作者进行远程控制的工具提取。

    Fabrication of traveling wavetube barrels using precision track forming
    4.
    发明授权
    Fabrication of traveling wavetube barrels using precision track forming 有权
    使用精密轨道成型制造旅行瓦斯桶

    公开(公告)号:US6048242A

    公开(公告)日:2000-04-11

    申请号:US295702

    申请日:1999-04-21

    CPC classification number: H01J23/165 H01J2223/26

    Abstract: The inner surface of a barrel for a traveling wave tube is formed with a set of tracks extending parallel to the longitudinal axis of the barrel. The rods supporting the traveling wave tube circuit assembly are supported in the tracks. The tracks are formed by forcing a tool having track-forming elements through the barrel, or a succession of ever-larger tools may be used to first form and then gradually enlarge the tracks.

    Abstract translation: 用于行波管的枪管的内表面形成有平行于枪管的纵向轴线延伸的一组轨道。 支撑行波管电路组件的杆被支撑在轨道中。 轨道通过迫使具有轨道形成元件的工具通过枪管形成,或者可以使用一系列越来越大的工具来首先形成并且然后逐渐扩大轨道。

    Electrostatic discharge simulator with highly reproducible wave-front
    5.
    发明授权
    Electrostatic discharge simulator with highly reproducible wave-front 失效
    静电放电模拟器具有高度可重现的波前

    公开(公告)号:US4926285A

    公开(公告)日:1990-05-15

    申请号:US212954

    申请日:1988-06-29

    CPC classification number: G01R31/001

    Abstract: Current injection electrostatic discharge equipment that includes a discharge capacitor connected to the input terminal of a sulfur-hexafluoride filled relay for selectively applying a current discharge to a test tip, the wave shape of the current discharge being highly repeatable.

    Abstract translation: 电流注入静电放电设备,其包括连接到六氟化硫填充继电器的输入端的放电电容器,用于选择性地向测试端施加电流放电,电流放电的波形高度可重复。

    Trigger for pseudospark thyratron switch
    6.
    发明授权
    Trigger for pseudospark thyratron switch 失效
    用于伪脉冲闸流闸开关的触发

    公开(公告)号:US5055748A

    公开(公告)日:1991-10-08

    申请号:US530205

    申请日:1990-05-30

    CPC classification number: H01J17/30 H01J17/44 H03K3/55

    Abstract: The present invention concerns a method for triggering certain high voltage electronic, gas discharge switches that are a novel type of high power thyratron. In this invention, triggering of switches of the so-called "pseudospark thyratron" type (a type of cold cathode thyratron) is enhanced by the inclusion of a very small, hot thermiionic trigger switch or cathode, separate and isolated from the main switch electrodes, to initiate the triggering discharge. The trigger cathode is protected from destruction by the main discharge current through the switch by mechanically and electrically isolating it from further participation in the discharge once the triggering process has been initiated.

    Abstract translation: 本发明涉及一种用于触发作为新型高功率闸流管的某些高压电子气体放电开关的方法。 在本发明中,通过包括非常小的热的热电偶式触发开关或阴极来增强所谓的“假甲酸节流闸”型(一种冷阴极闸流管)的开关的触发,与主开关电极分离和隔离 ,以启动触发放电。 一旦触发过程已经启动,触发阴极就可以通过机械和电气隔离,使其免受主放电电流的破坏。

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