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公开(公告)号：US4793429A
公开(公告)日：1988-12-27
申请号：US184308
申请日：1988-04-20
CPC分类号： G01G19/035 , G01G3/13
摘要： A system for weighing a vehicle in motion is disclosed. One or more piezoelectric weight sensors produce charge outputs in response to the weight of a vehicle passing over the sensors. A charge amplifier converts the sensor outputs to a voltage level. A peak voltage detector detects the peak voltage, which represents the sum of all sensor outputs. The peak voltage is then converted to a weight value using the thickness sensitivity of the piezoelectric material.
摘要翻译： 公开了一种用于对运动中的车辆进行称重的系统。 一个或多个压电重量传感器响应于通过传感器的车辆的重量而产生电荷输出。 电荷放大器将传感器输出转换为电压电平。 峰值电压检测器检测峰值电压，其表示所有传感器输出的和。 然后使用压电材料的厚度灵敏度将峰值电压转换成重量值。
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2.发明授权Electrical circuit protection devices comprising PTC conductive liquid crystal polymer compositions 失效包括PTC导电液晶聚合物组合物的电路保护装置
公开(公告)号：US5691689A
公开(公告)日：1997-11-25
申请号：US514201
申请日：1995-08-11
IPC分类号： C08G69/32 , C08G63/06 , C08G63/181 , C08G63/19 , C08G69/26 , C08G69/44 , H01C7/02 , H01C7/13 , H01G4/12 , H02H3/08 , H02H9/02 , H01C7/10
CPC分类号： H01C7/028 , H01C7/02 , H01G4/1227
摘要： Electrical circuit protection devices containing PTC elements comprised of conductive polymers which exhibit PTC behavior and are used to protect a load in an electrical circuit, in which the PTC conductive polymers are based on highly crystalline and highly ordered liquid crystal polymers and particulate conductive fillers dispersed therein, which are cross-linked by radiation. These circuit protection devices operate as automatically resettable current limiters and are particularly useful for protecting motors, solenoids, telephone lines and batteries, and for enhancing circuit interruption capability when used in conjunction with breakers and contactors. The liquid crystal polymers include aromatic polyesters, e.g., poly(p-phenylene terephthalate) and poly(p-hydroxybenzoate); aromatic copolyesters, e.g., poly(p-hydroxybenzoate-co-2,6-hydroxynaphthoate), poly(deca-methyleneterephthaloyl di-p-hydroxybenzoate, and poly(ethylene terephthalate-co-oxybenzoate); aromatic copolyester amides, e.g., poly(2,6-hydroxy-naphoate-phenoxyaminoterephthoate); aromatic polyamides, e.g., poly(p-phenylene terephthalamide), Kevlar, poly(p-benzamide), poly(2-chloro-1,4-phenylene terephthalamide), poly(p,p'-biphenylamide), and poly(2,6-napthalamide); aromaticpolyazomethines, e.g., poly (nitro-2-methyl-1,4-phenylenenitriloethylidine-1,4-phenylenethylidine), poly(nitrilo-2-methyl-1,4-phenylenenitrilomethylidine-1,4-phenylenemethylidine), and poly(nitrolo-2-chloro-1,4-phenylenenitrilomethylidine-1,4-phenylenemethylidine); and, blends thereof. The particulate conductive fillers include carbon black, carbon fibers, graphite, and metal flakes.
摘要翻译： 电路保护装置包含由导电聚合物组成的PTC元件，其表现为PTC行为并用于保护电路中的负载，其中PTC导电聚合物基于分散在其中的高度结晶和高度有序的液晶聚合物和颗粒状导电填料 ，它们通过辐射交联。 这些电路保护装置作为自动可复位限流器工作，特别适用于保护电动机，螺线管，电话线和电池，并在与断路器和接触器结合使用时增强电路中断能力。 液晶聚合物包括芳族聚酯，例如聚（对苯二甲酸对苯二甲酸酯）和聚（对羟基苯甲酸酯）; 芳族共聚酯，例如聚（对羟基苯甲酸酯 - 共-2,6-羟基萘甲酸酯），聚（对 - 亚甲基对苯二甲酰二对羟基苯甲酸酯和聚对苯二甲酸乙二醇酯 - 共 - 苯氧基苯甲酸酯）;芳族共聚酯酰胺，例如聚（ 聚对苯二甲酰对苯二甲酰胺），聚（对 - 苯甲酰胺），聚（2-氯-1,4-亚苯基对苯二甲酰胺），聚（对 - 苯甲酰胺） ，对联苯酰胺）和聚（2,6-萘二胺）;芳族多取氮甲基，例如聚（硝基-2-甲基-1,4-亚苯基三乙烯基-1,4-苯基亚乙基），聚（亚硝基-2-甲基 - 1,4-亚苯基亚乙基三亚甲基-1,4-亚苯基亚甲基）和聚（亚硝基-2-氯-1,4-亚苯基三亚甲基-1,4-亚苯基亚甲基）;及其混合物，颗粒状导电填料包括炭黑，碳纤维 ，石墨和金属薄片。
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公开(公告)号：US5339038A
公开(公告)日：1994-08-16
申请号：US910854
申请日：1992-07-06
IPC分类号： G01R31/02
CPC分类号： G01R31/021
摘要： An assembly for protecting a conduit having a core and an axial length, which length is susceptible to being pinched by a structure is disclosed. The conduit includes an insulating coating in surrounding relationship about the core, with the assembly including a semiconductive layer in surrounding relationship about the insulating coating, and a switching layer in surrounding relationship about the semiconductive layer. The semiconductive layer being formed from partially vulcanized ethylene propylene rubber including particles of a conductive element in the form of carbon black, silver, nickel, aluminum or the like. The switching layer is non-conductive in its unstressed state and conductive when pinched such that the switching layer completes a current flow path between the semiconductive layer and either a grounded structure or another conductive layer, which condition may then be detected.
摘要翻译： 公开了一种用于保护具有芯部和轴向长度的导管的组件，该长度易于受到结构的挤压。 所述导管包括围绕所述芯的围绕关系的绝缘涂层，所述组件包括围绕所述绝缘涂层的围绕关系的半导体层以及围绕所述半导体层的围绕关系的开关层。 半导电层由部分硫化的乙丙橡胶形成，包括炭黑，银，镍，铝等形式的导电元件的颗粒。 开关层在其未受应力状态下是非导通的，并且当被夹持时导通，使得开关层完成半导体层与接地结构或另一导电层之间的电流流动路径，然后可以检测该条件。
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公开(公告)号：US4999136A
公开(公告)日：1991-03-12
申请号：US235089
申请日：1988-08-23
IPC分类号： C08F299/02 , H01B1/22 , H05K1/18 , H05K3/30 , H05K3/32
CPC分类号： H01B1/22 , C08F299/028 , H05K3/305 , H05K3/321 , H05K1/181 , H05K2201/10636 , Y02P70/611 , Y02P70/613 , Y10S428/901
摘要： A UV curable electrically conductive adhesive has been developed with low resistivity, adequate lap shear strength, good thermal stability, and very stable conductivity at high temperatures of about 100.degree. C. and high humidity. The adhesive may be applied by silk screen printing and cured by UV in about 8 seconds. The adhesive may also be used as a replacement of solder in automated surface mount technology for electronic circuit fabrication. The adhesive is a mixture of (A) a blend of an acrylate epoxy and a urethane, a copolymer of an acrylate epoxy and a urethane, or mixtures thereof; (B) a polyfunctional acrylate monomer; (C) a photoinitiator, and (D) a conductive filler. Optionally, adhesion promoters and flow control agents may be used.
摘要翻译： 紫外线固化导电粘合剂已经开发出具有低电阻率，足够的搭接剪切强度，良好的热稳定性和在约100℃和高湿度的高温下非常稳定的导电性。 粘合剂可以通过丝网印刷施加，并通过UV固化约8秒。 粘合剂也可用作替代用于电子电路制造的自动表面贴装技术中的焊料。 粘合剂是（A）丙烯酸酯环氧树脂和氨基甲酸酯的共混物，丙烯酸酯环氧树脂和氨基甲酸酯的共聚物或其混合物的混合物; （B）多官能丙烯酸酯单体; （C）光引发剂，（D）导电填料。 任选地，可以使用粘合促进剂和流动控制剂。
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公开(公告)号：US06238790B1
公开(公告)日：2001-05-29
申请号：US09320202
申请日：1999-05-26
IPC分类号： B32B1500
CPC分类号： H02K3/30 , H01B3/40 , H01B3/421 , H01B3/441 , Y10T428/2927 , Y10T428/2933 , Y10T428/294
摘要： An electrically conducting member (2) is insulated with a thin coating (6) of a resinous insulation composition containing a resin interactive with and bonded to an oligomer containing a metal of at least one of Cr, Sn and Zn, where the oligomer is within a silicate type mica or clay structure.
摘要翻译： 导电构件（2）用包含树脂绝缘组合物的薄涂层（6）绝缘，所述树脂绝缘组合物包含与包含Cr，Sn和Zn中的至少一种的金属的低聚物相互作用并结合的树脂，其中低聚物在 硅酸盐型云母或粘土结构。
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公开(公告)号：US5772820A
公开(公告)日：1998-06-30
申请号：US685885
申请日：1996-07-25
申请人： Karl F. Schoch, Jr. , Theodore R. Vasilow , Andrew J. Piloto , Deborah P. Partlow , Kenneth C. Radford
发明人： Karl F. Schoch, Jr. , Theodore R. Vasilow , Andrew J. Piloto , Deborah P. Partlow , Kenneth C. Radford
CPC分类号： C01G49/009 , H01P11/00 , C01P2002/32 , C01P2002/52 , C01P2004/61 , C01P2006/12 , C01P2006/42 , Y10T156/1075
摘要： Materials and methods for the fabrication of high density, low temperature fired microwave ferrites for use in microwave power devices, transmission line elements, isolators, circulators, and phase shifters. Very fine (sub-micron) ferrite powders made by sol-gel methods are mixed with solvents and binders then tape-cast. Ferrite tapes in the unfired state are cut into complex shapes and may be provided with via holes. These ferrite sheets are fired discretely, or are laminated, cofired with printed metal pastes, or other active and passive ceramic tapes.
摘要翻译： 用于制造用于微波功率器件，传输线元件，隔离器，循环器和移相器的高密度，低温烧制微波铁氧体的材料和方法。 通过溶胶 - 凝胶法制备的非常细（亚微米）的铁氧体粉末与溶剂和粘合剂混合，然后进行胶带混合。 处于未烧结状态的铁氧体磁带被切割成复杂形状并且可以设置有通孔。 这些铁氧体片被离散地烧制，或被层压，与印刷的金属膏或其它有源和无源陶瓷带共烧。
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公开(公告)号：US6103382A
公开(公告)日：2000-08-15
申请号：US818483
申请日：1997-03-14
CPC分类号： H02K3/30 , H01B3/04 , H01B3/40 , Y10T428/251 , Y10T428/2911 , Y10T428/2936
摘要： A catalyzed mica tape used in insulating electrical conducting devices is made from a mica paper bonded to a backing with a bonding resin. The bonding resin is cross-linkable by an addition reaction. The catalyzed mica tape has distributed therein at least a catalyst at a concentration of greater than 0.01 g/m.sup.2 for every 100 g/m.sup.2 of the bonding resin. The catalyst is an organo-transition metal compound, organo-tin compound, or a combination thereof.
摘要翻译： 用于绝缘导电装置的催化云母带由用粘合树脂粘合到背衬上的云母纸制成。 粘合树脂通过加成反应可交联。 对于每100g / m2的粘合树脂，催化云母带至少分布有浓度大于0.01g / m 2的催化剂。 催化剂是有机过渡金属化合物，有机锡化合物或其组合。
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8.发明授权
公开(公告)号：US5968419A
公开(公告)日：1999-10-19
申请号：US986889
申请日：1997-12-08
摘要： The present invention is directed to conductive polymer composition that have positive temperature coefficients, electrical devices comprised thereof and methods of making the same. The composition comprises a thermoset polymer matrix containing discretely distributed thermoplastic material and dispersed conductive material. Preferably, the thermoset and thermoplastic polymers are substantially immiscible and have comparable volume transition temperatures, such as bisphenol A liquid epoxy resins and oxidized polyethylene.
摘要翻译： 本发明涉及具有正温度系数的导电聚合物组合物，由其组成的电气装置及其制造方法。 组合物包含含有离散分布的热塑性材料和分散的导电材料的热固性聚合物基质。 优选地，热固性和热塑性聚合物基本上是不混溶的并且具有相当的体积转变温度，例如双酚A液体环氧树脂和氧化聚乙烯。
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9.发明授权Electrically conductive prepreg for suppressing corona discharge in high voltage devices 失效用于抑制高压设备电晕放电的导电预浸料
公开(公告)号：US5633477A
公开(公告)日：1997-05-27
申请号：US242817
申请日：1994-05-16
摘要： A resin-rich electrically conductive felt material is described. The described conductive felt can be used to suppress corona discharge in high voltage generator coils. The conductive felt is prepared by treatment with electrically conducting polymers, such as polyaniline and polypyrrole, and resistivity values ranging from 4,000 to 100,000 ohms may be obtained. This treated felt can be readily impregnated with thermoset resins, such as epoxies, to provide flexible prepregs suitable for coil bonding applications in turbine generators.
摘要翻译： 描述了一种富含树脂的导电毡材料。 所描述的导电毡可用于抑制高压发生器线圈中的电晕放电。 通过用导电聚合物如聚苯胺和聚吡咯处理来制备导电毡，并且可以获得范围从4,000至100,000欧姆的电阻率值。 该经处理的毡可以容易地用热固性树脂例如环氧树脂浸渍，以提供适用于涡轮发电机中的线圈接合应用的柔性预浸料。
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10.发明授权
公开(公告)号：US5581192A
公开(公告)日：1996-12-03
申请号：US350299
申请日：1994-12-06
CPC分类号： H01H29/06 , H01H29/004 , H01H33/162 , H01H71/24
摘要： Novel conductive liquid compositions which have low resistivity when carrying an applied steady-state current (I.sub.Steady-State) but exhibit sharp increases in resistivity when subject to an applied fault current (I.sub.Fault). When used in circuit protection devices, the novel conductive liquid compositions having low resistivity are contained within an elongated flexible tube sealed by electrodes electrically connected to a load of an electrical circuit. The conductive liquid compositions carry an applied normal current under steady-state conditions. The flexible tube is deformed by radial contraction transverse to the direction of current flow and axial expansion, when an excessive current of fault magnitude is sensed by an actuator electrically connected to the electrodes and mechanically connected to the flexible tube to apply a deformation force on the tube, thereby causing the current path of the conductive liquid compositions to have high resistivity in order to limit the let through current to a safe value (I.sub.Limited). When the excessive current is removed, the deformation is correspondingly removed and the conductive liquid composition automatically reverts back to its original low resistivity state. The invention has specific applications as automatically resettable fuses or current limiters.
摘要翻译： 新型导电液体组合物在承载施加的稳态电流（ISteady-State）时具有低电阻率，但在受到施加的故障电流（IFault）时呈现电阻率的急剧增加。 当用于电路保护装置时，具有低电阻率的新型导电液体组合物被包含在由电连接到电路的负载的电极密封的细长柔性管中。 导电液体组合物在稳态条件下携带施加的正常电流。 柔性管通过横向于电流和轴向膨胀方向的径向收缩而变形，当故障幅度的过大电流被电连接到电极的致动器感测并机械地连接到柔性管以在其上施加变形力时 从而导致导电液体组合物的电流路径具有高电阻率，以便将通过电流限制到安全值（ILimited）。 当去除过大的电流时，相应地去除变形，并且导电液体组合物自动地回复到其原始的低电阻率状态。 本发明具有可自动复位的保险丝或电流限制器的具体应用。
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