EMI/RFI shield
    1.
    发明授权
    EMI/RFI shield 失效
    EMI / RFI屏蔽

    公开(公告)号:US5239125A

    公开(公告)日:1993-08-24

    申请号:US540068

    申请日:1990-06-19

    IPC分类号: H05K9/00

    CPC分类号: H05K9/0003 H05K9/0015

    摘要: An EMI/RFI shield for seams and cracks in surfaces of shielded structures disclosed. At least one conductive screen is applied in electrical contact with the surfaces and a conductive coating is applied over the screen to physically bond the screen to the surfaces and to maintain electrical conduction.

    摘要翻译: 公开了用于屏蔽结构表面的接缝和裂纹的EMI / RFI屏蔽。 至少一个导电屏被施加与表面电接触,并且导电涂层施加在屏幕上以将屏幕物理地结合到表面并且保持导电。

    Method of making concrete electrically conductive for electromagnetic
shielding purposes
    2.
    发明授权
    Method of making concrete electrically conductive for electromagnetic shielding purposes 失效
    制造具有导电性的电磁屏蔽方法

    公开(公告)号:US5346547A

    公开(公告)日:1994-09-13

    申请号:US880442

    申请日:1992-05-08

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: C04B14/48 C04B28/02

    摘要: Method and apparatus for making electrically conductive concrete articles ed for electromagnetic shielding, the invention also includes the articles of manufacture formed according to the method. Concrete articles formed according to the method of the invention are reinforced with magnetized metallic fibers, preferably steel fibers, a substantial portion of the fibers contacting nearby fibers to provide electrical continuity through the article. Contact between fibers is enhanced according to the invention by vibration of the concrete/fiber mix during forming of the electrically conductive concrete article.

    摘要翻译: 用于制造用于电磁屏蔽的导电混凝土制品的方法和装置,本发明还包括根据该方法形成的制品。 根据本发明的方法形成的混凝土制品用磁化的金属纤维(优选钢纤维)加强,大部分纤维接触附近的纤维以提供通过制品的电连续性。 根据本发明,通过在形成导电混凝土制品期间混凝土/纤维混合物的振动来增强纤维之间的接触。

    Testing electromagnetic shielding effectiveness of shielded enclosures
    3.
    发明授权
    Testing electromagnetic shielding effectiveness of shielded enclosures 失效
    测试屏蔽外壳的电磁屏蔽效能

    公开(公告)号:US5153524A

    公开(公告)日:1992-10-06

    申请号:US330247

    申请日:1989-03-29

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: G01R29/08

    CPC分类号: G01R29/0835

    摘要: A method for determining the electromagnetic RF shielding effectiveness of a shielding enclosure including sequentially driving the four diagonally opposite corner pairs of the enclosure with a RF signal, measuring the RF energy leakage for each corner pair, and averaging the four measured RF leakage levels to obtain an average RF energy leakage level. This average RF energy leakage level may then be compared with prior (preferably immediately after manufacture) measured average RF energy leakage levels to obtain an indication of the RF energy shielding effectiveness lost, if any, during the time from the prior test to the current test.

    摘要翻译: 一种用于确定屏蔽外壳的电磁RF屏蔽效能的方法,包括用RF信号顺序驱动外壳的四个对角相对的角对,测量每个角对的RF能量泄漏,并平均四个测量的RF泄漏电平以获得 平均RF能量泄漏水平。 然后可以将该平均RF能量泄漏水平与先前(优选紧接在制造之后)测量的平均RF能量泄漏水平进行比较,以获得在从先前测试到当前测试的时间期间RF能量屏蔽效能的损失(如果有的话)的指示 。

    Optical fire detection system responsive to spectral content and flicker
frequency
    4.
    发明授权
    Optical fire detection system responsive to spectral content and flicker frequency 失效
    响应光谱含量和闪烁频率的光学火灾探测系统

    公开(公告)号:US4533834A

    公开(公告)日:1985-08-06

    申请号:US446143

    申请日:1982-12-02

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: F23N5/08 G08B17/12 G08B26/00

    摘要: A fire detection system using optical fibers to transmit flame signals from a plurality of remote monitoring stations to a central detection and analysis station, the invention comprises a network of optical fibers which connect the monitoring stations to the central detection station for the purpose of transmitting incident analog optical, infrared and ultraviolet spectra to the central station for detection of fire conditions. The central detection and analysis station preferably includes a rotary scanner which scans each of the optical fibers, light from the fibers being dispersed by a prism associated with the scanner to allow detection of the various spectral components of the dispersed light by light sensitive semiconductors. The detected spectral components are then compared to known fire signal signatures which include flicker rate and spectral content information.

    摘要翻译: 一种使用光纤将火焰信号从多个远程监测站传输到中央检测和分析站的火灾探测系统,本发明包括光纤网络,其将监测站连接到中央检测站,以便发射事件 模拟光学,红外和紫外光谱到中心站检测火灾状况。 中央检测和分析站优选地包括扫描每个光纤的旋转扫描器,来自光纤的光被与扫描仪相关联的棱镜分散,以允许通过光敏半导体检测分散光的各种光谱分量。 然后将检测到的光谱分量与包括闪烁速率和光谱内容信息的已知火信号特征进行比较。

    Distance measuring system
    5.
    发明授权
    Distance measuring system 失效
    距离测量系统

    公开(公告)号:US4397548A

    公开(公告)日:1983-08-09

    申请号:US217335

    申请日:1980-12-17

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: G01S17/36 G01C3/08

    CPC分类号: G01S17/36

    摘要: A modulated light beam from a radiation source on a structure whose posit is to be measured is split into a first beam which propagates through the atmosphere to a first detector and a second beam which travels through an optical fiber to a second detector. The first and second detectors recover the modulation on the first and second beams, the phases of which are compared to determine the distance. In a preferred embodiment, the light source is a sine-wave modulated laser.

    摘要翻译: 来自辐射源的被测量位置的结构的调制光束被分割成通过大气传播到第一检测器的第一光束和通过光纤传播到第二检测器的第二光束。 第一和第二检测器恢复在第一和第二光束上的调制,其相位被比较以确定距离。 在优选实施例中,光源是正弦波调制激光器。

    Electromagnetically shielded door
    6.
    发明授权
    Electromagnetically shielded door 失效
    电磁屏蔽门

    公开(公告)号:US5241132A

    公开(公告)日:1993-08-31

    申请号:US543018

    申请日:1990-06-22

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: E06B5/18 E06B7/22 E06B7/232

    CPC分类号: E06B7/232 E06B5/18 E06B7/22

    摘要: A shielding connecting structure is disclosed for permitting the opening closing of the electromagnetic seal of screening material as applied across a door and a door jamb wherein the screening material is attached to the jamb and applied along the door. A pair of compressible parallel oriented rubber hoses are mounted between the jamb and the material attached thereto and a single compressible rubber hose is mounted between the door frame and the material applied thereto. The hose on the door is arranged to be positioned between the two parallel hoses when the door is closed upon the jamb during which the hoses become compressed to produce a wiping contacting action between the associated portions of the material.

    摘要翻译: 公开了一种屏蔽连接结构,用于允许屏蔽材料的电磁密封件打开和关闭,所述屏蔽材料施加在门和门侧柱上,其中所述屏蔽材料附接到所述侧柱并沿着所述门施加。 一对可压缩的平行取向的橡胶软管安装在侧柱和附着在其上的材料之间,并且单个可压缩橡胶软管安装在门框和施加于其之间的材料之间。 门上的软管被布置成当门被关闭在侧柱上时位于两个平行软管之间,在该侧柱期间软管被压缩以在材料的相关部分之间产生擦拭接触作用。

    Apparatus for determining break locations in fencing
    7.
    发明授权
    Apparatus for determining break locations in fencing 失效
    用于确定围栏中断点位置的装置

    公开(公告)号:US4450434A

    公开(公告)日:1984-05-22

    申请号:US265886

    申请日:1981-05-19

    IPC分类号: G08B13/12 G08B29/00 G08B13/00

    CPC分类号: G08B13/124

    摘要: An improved intrusion detection apparatus for detecting when a fence is cutr has been climbed over, as well as the location of the intrusion. A cable comprising at least one optical fiber having an electrical transmission line running therealong is strung along the fence to be protected. If an intruder either cuts the cable or stresses the fence so that the cable breaks, an optical signal running along the optical fiber or fibers is lost, thus providing an alarm indication at a central station. The loss of the optical signal automatically triggers an electrical pulse generator means which feeds pulses down the transmission line running along the optical fiber. Part of the pulse energy is reflected at the transmission line break, and the time elapsed between transmission and receipt of the pulses is determined by time domain reflectometry techniques (TDR).

    摘要翻译: 一种改进的入侵检测装置,用于检测围栏何时被切割或已经爬过,以及入侵的位置。 包括至少一根具有沿其运行的电传输线的光纤的电缆沿着要被保护的栅栏串起。 如果入侵者切断电缆或对栅栏施加压力以使电缆断裂,则沿着光纤或光纤运行的光信号将丢失,从而在中心站提供报警指示。 光信号的损失自动触发一个电脉冲发生器装置,它将脉冲沿着沿光纤运行的传输线进给。 脉冲能量的一部分在传输线断裂处反映,并且脉冲的传输和接收之间经过的时间由时域反射测量技术(TDR)确定。

    RFI shielded doors with inflatable gaskets
    8.
    发明授权
    RFI shielded doors with inflatable gaskets 失效
    RFI屏蔽门与充气垫圈

    公开(公告)号:US4177353A

    公开(公告)日:1979-12-04

    申请号:US778911

    申请日:1977-03-18

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: F16J15/46 H05K9/00

    摘要: A gasket structure for the door frame of an electromagnetically shielded enclosure having a flexible inflatable tube with a sleeve or coating of conducting material which upon inflation with the door closed provides intimate electrical contact between the door and the door frame.

    摘要翻译: 用于电磁屏蔽外壳的门框的垫圈结构具有柔性的可充气管,其具有套管或导电材料涂层,当门关闭时,该套可以封闭,从而在门和门框之间进行紧密的电接触。

    Method and apparatus for normalizing the outputs of sequentially scanned
magnetic flaw detectors
    9.
    发明授权
    Method and apparatus for normalizing the outputs of sequentially scanned magnetic flaw detectors 失效
    用于对顺序扫描的磁性探伤仪的输出进行归一化的方法和装置

    公开(公告)号:US4087749A

    公开(公告)日:1978-05-02

    申请号:US762373

    申请日:1977-01-25

    申请人: Ray G. McCormack

    发明人: Ray G. McCormack

    IPC分类号: G01N27/82 G01R33/07 G01R33/12

    CPC分类号: G01R33/07 G01N27/82

    摘要: A method and apparatus for detecting flaws in conduits or the like which prises positioning an annular array of Hall-effect devices transversely around the conduit, applying an electric current to the conduit to flow longitudinally therethrough so as to create a magnetic field around the conduit, sequentially scanning the Hall-effect devices to produce a series of output signals corresponding to the portions of the magnetic field sensed respectively by them, and comparing the output signals for nonuniformities among them, the nonuniformities being indicative of the existence and location of flaws.

    摘要翻译: 一种用于检测导管等中的缺陷的方法和装置,其包括将霍尔效应装置的环形阵列横向于导管周边定位,向导管施加电流以纵向流过,以便在导管周围产生磁场, 顺序地扫描霍尔效应器件以产生与其分别感测的磁场的部分相对应的一系列输出信号,并且比较它们之间不均匀性的输出信号,该不均匀性表示缺陷的存在和位置。