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    Electromagnetic shield-type doorway for buildings and electromagnetic shielding system therefor
    43.
    发明授权
    Electromagnetic shield-type doorway for buildings and electromagnetic shielding system therefor 失效
    用于建筑物的电磁屏蔽式门口及其电磁屏蔽系统

    公开(公告)号：US4894489A

    公开(公告)日：1990-01-16

    申请号：US52635

    申请日：1987-05-20

    申请人： Takeshi Takahashi ,  Masatake Nakamura ,  Yoshiji Yabana ,  Toshiyuki Ishikawa ,  Koji Nagata

    发明人： Takeshi Takahashi ,  Masatake Nakamura ,  Yoshiji Yabana ,  Toshiyuki Ishikawa ,  Koji Nagata

    IPC分类号： E06B5/18 ,  H05K9/00

    CPC分类号： H05K9/0003 ,  E06B5/18

    摘要： An electromagnetic shield-type doorway for a building is provided with two doors having a curved passageway between them. By lengthening the passageway to such an extent that the two doors cannot be opened simultaneously, electric waves can be blocked at either of the doors. The electromagnetic shielding effect can be enhanced by installing a revolving door in the passageway and attaching electrically conductive brushes to at least the lower edge and one side edge of the revolving door to fill the gaps at these edges. In a system for electromagnetically shielding a building, a doorway passageway of the building is partitioned by three or more doorways each having an electromagnetic shielding function. When persons leaving and exiting a building simultaneously approach entrance and exit doors at the ends of the doorway passageway so that these doors open at the same time, the central doorway remains closed to maintain the integrity of the electromagnetic shield. If a large number persons are entering and exiting, the doors are opened and closed in an interlocked manner so that one of the three doorways will always be closed, thereby maintaining the integrity of the shield in reliable fashion without hampering entry and exit.

    Building with electromagnetic shield structure for individual floors
    44.
    发明授权
    Building with electromagnetic shield structure for individual floors 失效
    建筑用电磁屏蔽结构为个别楼层

    公开(公告)号：US4889958A

    公开(公告)日：1989-12-26

    申请号：US60297

    申请日：1987-06-10

    申请人： Takeshi Takahashi ,  Masatake Nakamura ,  Yoshiji Yabana ,  Toshiuyki Ishikawa ,  Koji Nagata

    发明人： Takeshi Takahashi ,  Masatake Nakamura ,  Yoshiji Yabana ,  Toshiuyki Ishikawa ,  Koji Nagata

    IPC分类号： E04B1/92 ,  H04B15/00 ,  H05K9/00

    CPC分类号： E04B1/92 ,  H04B15/00 ,  H05K9/0001

    摘要： A building with an electromagnetic shield structure for individual floors uses an electromagnetic shielding material in a body of the building and in openings such as windows and doorways, and the external wall surface of the building is covered with an electromagnetic shielding layer. An electromagnetically shielded space within the building is divided into individual floors by floor partitions using an electromagnetic shielding material. Wireless communication utilizing electric waves is carried out within the building, with the same frequency band or any desired frequency band being allotted to each floor. With the above arrangement, sets of communications equipment using the same frequency band on one floor can communicate with one another without interfering with sets on another floor, even though the sets of equipment on the other floors use the same frequency band. Accordingly, by installing sets of communications equipment of a fixed frequency band irrespective of the number of floors in the building, information can be communicated freely within the building.

    System for detecting and processing abnormality in electromagnetic shielding of intelligent buildings
    46.
    发明授权
    System for detecting and processing abnormality in electromagnetic shielding of intelligent buildings 失效
    智能建筑电磁屏蔽检测和处理异常系统

    公开(公告)号：US4814694A

    公开(公告)日：1989-03-21

    申请号：US195053

    申请日：1988-05-17

    申请人： Takeshi Takahashi ,  Masatake Nakamura ,  Yoshiji Yabana ,  Toshiyuki Ishikawa ,  Koji Nagata

    发明人： Takeshi Takahashi ,  Masatake Nakamura ,  Yoshiji Yabana ,  Toshiyuki Ishikawa ,  Koji Nagata

    IPC分类号： H04B15/00 ,  G01R29/08 ,  H04B15/02 ,  H05K9/00 ,  G01R23/00

    CPC分类号： G01R29/0835

    摘要： Disclosed is a system for detecting and processing an abnormality in electromagnetic shielding for use in an intelligent building which is constructed using an electromagnetic shielding material for the skeleton and openings such as windows and doorways so that the whole of the building is formed into an electromagnetic shielding structure in order to carry out radio communication inside the building. The system has radio wave detecting means for detecting an external radio wave inside the building, level judging means for judging the level of an external radio wave detected by the radio wave detecting means, and processing means for detecting and processing an abnormality on the basis of an output from the level judging means, whereby an abnormality in the electromagnetic shielding performance is detected on the basis of the intensity level of a detected radio wave intruding into the building from the outside. When the electromagnetic shielding performance has deteriorated, external radio waves such as broadcast waves, telecast waves, etc. intrude into the building. Therefore, any of these radio waves is constantly monitored by the radio wave detecting means inside the building. Thus, when the electromagnetic shielding performance has considerably deteriorated, the abnormality can be detected by judging the level of the detected radio wave with the level judging means.

    Puffer type current interrupter
    48.
    发明授权
    Puffer type current interrupter 失效
    河豚式电流灭弧室

    公开(公告)号：US4442330A

    公开(公告)日：1984-04-10

    申请号：US399820

    申请日：1982-07-19

    申请人： Youichi Oshita ,  Shunji Sato ,  Takeshi Takahashi ,  Kunio Hirasawa

    发明人： Youichi Oshita ,  Shunji Sato ,  Takeshi Takahashi ,  Kunio Hirasawa

    IPC分类号： H01H33/16 ,  H01H33/91 ,  H01H33/915 ,  H01H33/70

    CPC分类号： H01H33/16 ,  H01H33/91

    摘要： A puffer type current interrupter employing a pair of symmetric electrodes with contact bosses provided on their confronting surfaces. An insulator nozzle is arranged such that the throat section for providing a jet of arc blasting gas is located in the periphery of the bosses. The electrode structure provides a uniform electric field between the electrodes, thereby gaining the breakdown voltage.

    摘要翻译： 一种使用一对对称电极的波纹式电流断流器，其具有设置在其相对表面上的接触凸起。 绝缘子喷嘴布置成使得用于提供喷弧气体喷射的喉部位于凸台的周边。 电极结构在电极之间提供均匀的电场，从而获得击穿电压。

    Method for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the method
    49.
    发明授权
    Method for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the method 失效
    用于检查封闭式开关装置的电触头的方法和与开关装置一起使用的辅助装置以使用该方法

    公开(公告)号：US4263491A

    公开(公告)日：1981-04-21

    申请号：US889535

    申请日：1978-03-23

    申请人： Masaki Murashita ,  Seizo Nakano ,  Hiroshi Itoh ,  Shigeo Shiono ,  Takeshi Takahashi

    发明人： Masaki Murashita ,  Seizo Nakano ,  Hiroshi Itoh ,  Shigeo Shiono ,  Takeshi Takahashi

    IPC分类号： H01H33/00 ,  G01R31/02 ,  H01H1/00 ,  H01H33/16 ,  H01H9/00 ,  H01H33/12

    CPC分类号： G01R31/02 ,  H01H1/0015

    摘要： In an enclosed-type switching device having at least a pair of electric contacts, a method for checking the contacts without visual inspection wherein with the contacts closed, the resistance value between outer terminals connected to the contacts is measured and compared with a reference resistance value, so that the result of comparison is used to determine the degree of damage of the contacts. Also disclosed is an auxiliary apparatus for use with an enclosed-type switching device to facilitate application of the above-mentioned method, especially when the switching device is equipped with a plurality of parallel-connected sequentially closed or opened contact pairs. The auxiliary apparatus is arranged to interrupt the sequential operation of the contact pairs so that the resistance is measured during the interruption of the operation.

    摘要翻译： 在具有至少一对电触点的封闭式开关装置中，用于在不进行目视检查的情况下检查触点的方法，其中触点闭合时，测量与触点相连接的外部端子之间的电阻值，并将其与参考电阻值进行比较 ，因此比较结果用于确定触点的损坏程度。 还公开了一种用于封闭式开关装置的辅助装置，以便于应用上述方法，特别是当开关装置配备有多个并联连接的顺序关闭或开放的触点对时。 辅助装置被布置成中断触点对的顺序操作，使得在操作中断期间测量电阻。