A contactless resistance potentiometer
    11.
    发明授权
    A contactless resistance potentiometer 失效
    非接触电阻电位器

    公开(公告)号:US4276534A

    公开(公告)日:1981-06-30

    申请号:US37824

    申请日:1979-05-10

    CPC分类号: H01L31/164

    摘要: The present invention involves a structure of a contactless ohmic resistance potentiometer. A current path between two exterior electrodes is provided by a photoconductor, and a means is provided for causing an exposure of a portion of the length of the photoconductor between one exterior electrode and a tapping electrode. This permits a voltage division between two exterior electrodes. The usable surface of the photoconductor layer is delimited by an exterior electrode and a tapping electrode having a definite geometric course between the exterior electrodes. The distance ratio from the tapping electrode to the two exterior electrodes is varied by means of displacing the exposure of the photoconductor which causes the active partial surface of the photoconductor to be varied at will.

    摘要翻译: 本发明涉及非接触欧姆电阻电位器的结构。 两个外部电极之间的电流路径由光电导体提供,并且提供了用于使得一个外部电极和分接电极之间的感光体的一部分长度的曝光的装置。 这允许两个外部电极之间的电压分配。 光电导体层的可用表面由外部电极和在外部电极之间具有确定的几何程度的攻丝电极限定。 通过移动感光体的曝光来改变从敲击电极到两个外部电极的距离比,这导致光电导体的有源部分表面随意变化。

    SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES
    17.
    发明申请
    SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES 审中-公开
    表面改性超级磁性氧化颗粒

    公开(公告)号:US20110147641A1

    公开(公告)日:2011-06-23

    申请号:US12922808

    申请日:2009-03-30

    IPC分类号: H01F1/00 B05D5/12

    摘要: Surface-modified superparamagnetic oxidic particles, characterized by the following physicochemical characteristics: BET surface area 20 to 75 m2/g; Carbon content 0.5 to 6.0% by weight; Tamped density 150 to 500 g/l; Chlorine content 50 to 1000 ppm; Drying loss 0.1 to 4.0% by weight are prepared by contacting the oxides with the surface modifier either by spraying or vapour deposition and then heat-treating them. The surface-modified oxidic particles can be used as a filler in adhesives. Further fields of application are use for data carriers, as a contrast agent in imaging processes, for biochemical separation and analysis processes, for medical applications, as an abrasive, as a catalyst or as a catalyst support, as a thickener, for thermal insulation, as a dispersing assistant, as a flow assistant and in ferrofluids.

    摘要翻译: 表面改性的超顺磁性氧化物颗粒,其特征在于以下物理化学特性:BET表面积为20〜75m2 / g; 碳含量为0.5〜6.0重量% 捣实密度150〜500g / l; 氯含量50〜1000ppm; 通过喷雾或气相沉积使氧化物与表面改性剂接触,然后对其进行热处理,制备0.1至4.0重量%的干燥失重。 表面改性的氧化物颗粒可用作粘合剂中的填料。 其它应用领域可用于数据载体,成像过程中的造影剂,生物化学分离和分析过程,医疗应用,研磨剂,催化剂或作为增稠剂的催化剂载体,用于保温, 作为分散助手,作为流动助手和铁磁流体。

    Silicone rubber
    20.
    发明授权
    Silicone rubber 有权
    硅橡胶

    公开(公告)号:US07659328B2

    公开(公告)日:2010-02-09

    申请号:US11048869

    申请日:2005-02-03

    IPC分类号: C08K9/06

    CPC分类号: C08K9/04 C08L83/04

    摘要: A composition containing a silicone and one or more silanized, structure-modified, pyrogenic silicas which contain groups fixed to their surface is described. The silicone containing silanized, structure-modified, pyrogenic silicas exhibit advantageous rheological properties, such as lowered crepe hardening, which facilitates the processing operations even after storage or transport of the silicone composition.

    摘要翻译: 描述了含有固定在其表面上的基团的硅氧烷和一种或多种硅烷化,结构改性的致热二氧化硅的组合物。 含有硅氧烷的硅烷化结构改性的致热二氧化硅表现出优异的流变性能,例如降低的起皱硬化,即使在硅氧烷组合物的储存或运输之后也有利于加工操作。