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公开(公告)号：US4933025A
公开(公告)日：1990-06-12
申请号：US415696
申请日：1989-10-02
CPC分类号： H01F1/0571 , B22F1/0081
摘要： A method for treating rare earth permanent magnetic material is disclosed. The treatment includes soaking ribbon rare earth permanent magnetic material consisting essentially of grains of the tetragonal crystal phase RE.sub.2 TM.sub.14 B where RE is neodymium and/or praseodymium or mixtures thereof with other rare earth elements and TM is iron or mixtures of iron and cobalt, cobalt in a soaking solution of either distilled water or phosphoric acid and manganese phosphate solution, draining off the soaking solution, rinsing with distilled water while agitating to separate and remove fine powdered magnetic material, and washing and drying the remaining powder or ribbons. The treated material is taken to substantial dryness before the material is incorporated into a permanent magnet.
摘要翻译： 公开了一种处理稀土永磁材料的方法。 该处理包括浸渍带状稀土永久磁性材料，其基本上由四方结晶相RE2TM14B的晶粒组成，其中RE是钕和/或镨或其与其它稀土元素的混合物，TM是铁或铁和钴的混合物，钴 将蒸馏水或磷酸和磷酸锰溶液浸泡溶液，排出浸泡溶液，同时用蒸馏水冲洗，同时搅拌分离并除去细粉状磁性材料，并洗涤和干燥剩余的粉末或带。 在将材料掺入永磁体之前，将处理过的材料取得相当大的干燥度。
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公开(公告)号：US4946263A
公开(公告)日：1990-08-07
申请号：US274153
申请日：1988-11-21
IPC分类号： G02F1/133 , G02F1/1334
CPC分类号： G02F1/133382 , G02F1/1334
摘要： In an optical device containing material which is dielectric wherein the device is switchable between an inactive relatively opaque state and an activated relatively transparent state in response to the application of a driving electric field of sufficiently low frequency, a problem may arise in that the switching time between the inactive-opaque state and the activated-transparent state is increased and/or the light transmissivity in the activated-transparent state is decreased when the device is at a relatively low temperature. This problem is alleviated by applying a heating electric field of sufficiently high frequency as to heat the dielectric material while not switching the device to the activated-transparent state thereby raising the temperature of the device to decrease the switching time between the inactive-opaque state and the activated-transparent state and/or to increase the light transmissivity in the activated-transparent state. The dielectric material may be a polymer film containing dispersed liquid crystal droplets.
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公开(公告)号：US4845329A
公开(公告)日：1989-07-04
申请号：US274152
申请日：1988-11-21
CPC分类号： H05B6/54 , B60S1/026 , H05B6/62 , H05B2214/02
摘要： In an automotive vehicle having a visual glass pane subject to collecting vision obscuring moisture in the form of ice, frost, mist, fog, etc., apparatus is provided for removing the collected moisture. Specifically, the apparatus comprises a transparent layer of dielectric material underlying the glass pane in heat conducting relationship thereto, and means for producing dielectric heating of the dielectric material to thereby heat the glass and remove the collected moisture. Preferably, the layer of dielectric material is a polymer film and the means for producing dielectric heating includes a pair of transparent electrodes extending over the layer of dielectric material. For ease of fabrication, the pair of electrodes may be interdigitated on the same side of the layer of dielectric material.
摘要翻译： 在具有视觉玻璃窗的机动车辆中，收集视觉遮挡了冰，霜，雾，雾等形式的水分，提供了用于去除收集的水分的装置。 具体地说，该装置包括与导热关系的玻璃板下面的介电材料的透明层，以及用于产生电介质材料的电介质加热从而加热玻璃并除去收集的水分的装置。 优选地，介电材料层是聚合物膜，并且用于产生电介质加热的装置包括在电介质材料层上延伸的一对透明电极。 为了易于制造，该对电极可以在电介质材料层的同一侧上交错。
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公开(公告)号：US5142644A
公开(公告)日：1992-08-25
申请号：US666310
申请日：1991-03-08
IPC分类号： G02F1/13 , G02F1/1333 , G02F1/1334
CPC分类号： G02F1/13452 , G02F1/133365 , G02F1/1334
摘要： An electrical contact for use with an optically responsive, polymer dispersed liquid crystal film is provided. The preferred electrical contact means consists of a pair of U-shaped, electrically conductive spring connectors. Each of these spring connectors is rigidly biased against corresponding transparent electrodes provided on each of the surrounding transparent substrates, so as to provide a compressive clamping force against the electrode. This ensures an intimate and complete electrical connection between each spring connector and each transparent electrode. The spring connector may be formed from any electrically conductive material which is sufficiently strong yet yielding and which is sufficiently anodic with respect to the electrode material, a preferred material being a suitable beryllium copper alloy when the electrodes are formed from a material such as indium-tin oxide. The preferred spring connector also provides redundant electrical contact between each electrode and itself, therefore, enabling its use in large area devices, such as window panels, wherein it is imperative that failure at a single point of electrical contact does not result in failure of the electrical connection.
摘要翻译： 提供了一种与光学响应的聚合物分散液晶膜一起使用的电接触。 优选的电接触装置由一对U形导电弹簧连接器组成。 这些弹簧连接器中的每一个刚性地偏压设置在每个周围透明基板上的相应的透明电极，以便提供抵抗电极的压缩夹紧力。 这确保了每个弹簧连接器和每个透明电极之间的紧密和完整的电连接。 弹簧连接器可以由相当于电极材料充分强度而足够阳极的任何导电材料形成，优选的材料是合适的铍铜合金，当电极由诸如铟 - 氧化锡。 优选的弹簧连接器还在每个电极和其自身之间提供冗余的电接触，因此，使其能够用于大面积的装置，例如窗板，其中必须在单个电接点处的故障不会导致 电气连接。
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