Light-transmitting type screen for a color television projector
    3.
    发明公开
    Light-transmitting type screen for a color television projector 失效
    光透射屏幕的彩色电视投影机。

    公开(公告)号:EP0037739A1

    公开(公告)日:1981-10-14

    申请号:EP81301520.3

    申请日:1981-04-07

    IPC分类号: G03B21/62 H04N5/72

    CPC分类号: G03B21/625

    摘要: In a rear projection screen for a color television projector, having a plurality of lenticular lenses on one surface thereof, the contour of the cross-section of each lenticular lens (12) is simply formed of a pair of linear portions (7a', 7b') and an arcuate portion (8') interposed between the pair of linear portions. Thus, a mold for manufacturing the screen can be simply and readily machined so as to provide low cost screens, while the picture on the screen looks satisfactorily when viewed from various view points throughout a wide angle.

    Electrode for fuel cell and method of producing the same
    4.
    发明公开
    Electrode for fuel cell and method of producing the same 审中-公开
    ElektrodefürBrennstoffzelle und Verfahren zur Herstellung

    公开(公告)号:EP0948071A2

    公开(公告)日:1999-10-06

    申请号:EP99105131.9

    申请日:1999-03-26

    IPC分类号: H01M8/10 H01M4/88

    摘要: A method of producing an electrode having a high performance in a simple and convenient manner which does not require the use of any of the medium, surfactant and pore-producing agent is disclosed. In the disclosed method, a layer including a catalyst powder is formed on a surface of a polymer electrolyte film or a porous conductive electrode substrate by supplying an electrostatically-charged catalyst powder to the polymer electrolyte film or the porous conductive electrode substrate. Alternatively, a layer including a catalyst powder is formed on a surface of a polymer electrolyte film or a porous conductive electrode substrate by spraying the catalyst powder on the surface of the polymer electrolyte film or the porous conductive electrode substrate together with a carrier gas, thereby to cause the catalyst powder to adhere to the surface.

    摘要翻译: 公开了一种以简单方便的方式制造具有高性能的电极的方法,其不需要使用任何介质,表面活性剂和孔隙生成剂。 在所公开的方法中,通过将静电荷催化剂粉末供给到高分子电解质膜或多孔导电性电极基板上,在高分子电解质膜或多孔导电性电极基板的表面上形成包含催化剂粉末的层。 或者,通过将催化剂粉末与载气一起喷涂在高分子电解质膜或多孔导电性电极基板的表面上,在高分子电解质膜或多孔导电性电极基板的表面上形成包含催化剂粉末的层,由此 以使催化剂粉末附着在表面上。

    Self-regulating heating article having electrodes directly connected to a PTC layer
    8.
    发明公开
    Self-regulating heating article having electrodes directly connected to a PTC layer 失效
    自调节与它们直接连接到PTC层电极Heizartikel。

    公开(公告)号:EP0187320A1

    公开(公告)日:1986-07-16

    申请号:EP85116105.9

    申请日:1985-12-17

    IPC分类号: H05B3/14 H05B3/06

    CPC分类号: H01C1/1406 H05B3/06 H05B3/146

    摘要: A self-regulating heating article (10) comprises a first elongate layer (11) formed by a crystalline polymeric composition of high crystallinity and conductive particles dispersed in the polymeric composition to exhibit a positive temperature coefficient of resistance. A pair of elongate electrodes (12, 131, which are adapted for connection to a mains supply, are secured one on each surface of the first layer to develop a potential in the direction of thickness of the first layer. The electrodes are arranged so that a creeping distance which is greater than the thickness of the first layer is established between the electrodes along peripheral edges thereof. The creeping distance prevents insulation breakdown and ensures safe, high wattage operation at mains voltages.