Parallel grounding scheme
    3.
    发明公开
    Parallel grounding scheme 失效
    平行接地方案

    公开(公告)号:EP0145317A3

    公开(公告)日:1986-02-12

    申请号:EP84307871

    申请日:1984-11-14

    IPC分类号: H05K09/00

    CPC分类号: H05K9/0066

    摘要: The disclosure relates to improved system grounding that includes two system grounding paths for card caged electronic modules. A grounding path through the card cage and a grounding path through the system power supply are used to minimize noise, i.e., reduce unwanted induced superimposed transient voltage levels.

    Door in a construction preventing the transition of interference fields
    4.
    发明公开
    Door in a construction preventing the transition of interference fields 失效
    建筑物门禁防止干扰场的过渡

    公开(公告)号:EP0095743A3

    公开(公告)日:1984-11-21

    申请号:EP83105241

    申请日:1983-05-26

    申请人: EUROSHIELD OY

    发明人: Sohlström, Lasse

    IPC分类号: E05D03/06 E06B05/18 H05K09/00

    摘要: The invention is concerned with a door in a construction forming an electromagnetically protected space, wherein the contact zone between the door (1) and the stationary construction (2) has been sealed by means of a labyrinth structure (3 to 6) attenuating the transition of interference fields. A problem related to the prior-art door constructions f this type is the loss of the ease of operation of the door and loss of the customary operating properties of a normally hinged door when an efficiently attenuating labyrinth structure is used, as a result of the high compression force required for closing the door as well as of the tendency of the pivoting movement of the door to damage the labyrinth structure. In the invention, this problem has been overcome in practice so that the movement of closing of the door (1) consists of a normal pivoting movement around an axis (8) defined by the hinge devices (7) as well as of a substantially linear controlled final movement producing a contact preventing the transition of interference fields.

    Electromagnetic wave-shielding materials
    5.
    发明公开
    Electromagnetic wave-shielding materials 失效
    电磁波屏蔽材料

    公开(公告)号:EP0083723A3

    公开(公告)日:1984-02-22

    申请号:EP82110885

    申请日:1982-11-24

    IPC分类号: H05K09/00

    CPC分类号: H05K9/0083

    摘要: An electromagnetic wave-shielding material is disclosed. The material is comprised of one or more electromagnetic wave-shielding layers and one or more surface layers. The shielding layers are comprised of a thermoplastic resin, an aluminum or aluminum alloy and electrically conductive carbon black. The surface layers are comprised substantially of thermoplastic resin. The proportion of the carbon black and aluminum in the shielding layer are from 5 to 50% by volume and 5 to 50% by volume, respectively, provided the total proportion of the carbon black and aluminum is 10 to 60% by volume. The different in solubility parameter between the thermoplastic resin of the surface layer and the thermoplastic resin of the shielding layer is 3.0 or less. The material has superior mechanical strength and electromagnetic wave-shielding properties.

    Printed circuit board
    6.
    发明公开
    Printed circuit board 失效
    印刷电路板

    公开(公告)号:EP0027047A3

    公开(公告)日:1982-10-27

    申请号:EP80303504

    申请日:1980-10-03

    IPC分类号: H05K01/00 H05K09/00 H05K03/46

    摘要: A three layer printed circuit board comprises upper and lower layers (A, C) which provide terminal locations (1A-6A) (1C-6C) for connection to pins of electrical connectors or electronic components which are to be connected in parallel by conductor tracks of the circuit board. In order to achieve an even distribution of conductor tracks between the layers (A, C) only certain terminal locations (2A, 4A, 6A, 1C, 3C, 5C) are connected to respective conductor tracks, the locations of the respective layers being electrically connected by plated-through holes. A conductive layer (B) providing a ground plane is located between the upper and lower layers (A, C) and has non-conductive areas (lB-6B) providing clearance for the plated-through holes. Shield tracks (7A-9A, 7C-9C) are located between the conductor tracks and are connected to the ground plane (B) by plated-through holes (10) so that they form closed conductive loops providing shielding against capacitative and inductive cross-talk between the conductor tracks.

    Screening for electronic assemblies
    7.
    发明公开
    Screening for electronic assemblies 失效
    屏蔽电子组装

    公开(公告)号:EP0217355A3

    公开(公告)日:1988-01-27

    申请号:EP86113429

    申请日:1986-09-30

    IPC分类号: H05K09/00 B32B15/10

    CPC分类号: H05K9/0084

    摘要: Eine Abschirmung für elektronische Baugruppen besteht zur Erfüllung der unterschiedlichen Anforderungen wie Feuersicherheit, Biegsamkeit, Kurzschlußsicherheit und möglichst billiger Herstellbarkeit aus einer Aluminiumfolie, einer hoch verdichteten und kalt gewalzten Preßspanschicht sowie aus einer auf der zur Aluminiumfolie entgegen gesetzten Seite der Preßspanschicht aufkaschierten Klarsicht folie mit jeweils entsprechenden kritischen Werten.

    摘要翻译: 为了满足消防安全,灵活性,短路安全性和尽可能廉价的生产能力等各种要求,电子组件的屏幕由铝箔,冷轧压板层,提供良好的密封, 以及涂覆在与铝箔相对的压板层侧的透明膜,其中每一个具有合适的临界值。

    Interlocking device for a two-part keyboard housing
    9.
    发明公开
    Interlocking device for a two-part keyboard housing 失效
    用于两部分键盘外壳的互锁装置

    公开(公告)号:EP0127164A3

    公开(公告)日:1987-07-01

    申请号:EP84106008

    申请日:1984-05-25

    发明人: Lemche, Josef

    IPC分类号: H05K05/00 H05K09/00

    摘要: Die Erfindung bezieht sich auf eine Verriegelvorrichtung für ein zweiteiliges Tastaturgehäuse aus Kunststoff mit innenseitig angeordneter Schirmung. Eine befriedigende Schirmung wurde bei derartigen Kunststoffgehäusen bisher nur dadurch erreicht, daß in das Tastaturgehäuse ver schraubte Blecheinsätze eingesetzt werden. Dies ist aber mit einem hohen Aufwand verbungen. Erfindungsgemäß wird der hohe Aufwand dadurch vermieden, daß das Tastaturun terteil 1 mindestens an einer Seite, vorzugsweise an der Vor derseite Durchbrüche 2 aufweist, in die am Tastaturoberteil 10 befestigte Haken 9 eingreifen. Unterhalb der Durchbrüche 2 ist eine Verschlußschiene 4 verschiebbar angeordnet, die im Abstand der Haken 9 mit schräg nach oben gebogenen Kon taktzungen 5 und mit Kontaktbuckeln 6 versehen ist. In der Mitte der Seiten der Tastaturunterteile 1, vorzugsweise an der Vorderseite, befindet sich ein Steg 7 und in der Ver schlußschiene 4 eine Öffnung 8, die aufeinander so abges timmt sind, daß die Verschlußschiene 4 mittels Werkzeug verschiebbar ist. Die Verriegelung nach der Erfindung ist vor zugsweise bei Tastaturgehäusender Datentechnik verwend bar.