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99 条记录 (耗时 0.043 秒)

    Method of making electrically insulating metallic oxides electrically conductive
    42.
    发明授权
    Method of making electrically insulating metallic oxides electrically conductive 失效
    电绝缘金属氧化物导电的方法

    公开(公告)号：US5098485A

    公开(公告)日：1992-03-24

    申请号：US584618

    申请日：1990-09-19

    申请人： David A. Evans

    发明人： David A. Evans

    IPC分类号： C23C8/10 ,  H01G9/08

    CPC分类号： C23C8/10 ,  H01G9/08

    摘要： A method of making an electrical contact to a metal on which an electrically insulating native oxide is formed includes applying atoms or ions to the native oxide, heating the metal and oxide to a temperature and for a time effective to make the oxide, where the atoms and/or ions have been applied, electrically conducting and in electrical communication with the metal. The invention may be employed to establish electrical contacts with native oxides on aluminum, molybdenum, niobium, tantalum, titanium, tungsten, and zirconium. The atoms and ions include aluminum, antimony, arsenic, boron, gallium, indium, phosphorus, and silicon. An aqueous solution of boric acid and trisodium phosphate may be applied to establish electrically conductive regions in an oxide on niobium, tantalum, titanium, and stainless steel after heat treatment. Brushing with palladium wires mechanically applies palladium atoms to tantalum oxide to establish electrical contact to the tantalum after heat treatment. The invention is useful in forming containers for electrolytic tantalum capacitors and making direct metal-to-metal electrical connections for capacitors and contacts for switches and relays.

    摘要翻译： 与其上形成电绝缘的天然氧化物的金属进行电接触的方法包括将原子或离子施加到天然氧化物上，将金属和氧化物加热至有效制备氧化物的温度和时间，其中原子 和/或离子已被施加，导电并与金属电连通。 本发明可用于与铝，钼，铌，钽，钛，钨和锆上的天然氧化物建立电接触。 原子和离子包括铝，锑，砷，硼，镓，铟，磷和硅。 可以应用硼酸和磷酸三钠的水溶液，以在热处理后在铌，钽，钛和不锈钢上的氧化物中建立导电区域。 用钯丝冲刷机械地将钯原子施加到氧化钽上，以在热处理后与钽形成电接触。 本发明可用于形成用于电解钽电容器的容器并且用于电容器和用于开关和继电器的触点的直接金属 - 金属电连接。

    Electrical component package
    43.
    发明授权
    Electrical component package 失效
    电气元件封装

    公开(公告)号：US4992910A

    公开(公告)日：1991-02-12

    申请号：US506519

    申请日：1990-04-09

    申请人： David A. Evans

    发明人： David A. Evans

    IPC分类号： H01G9/08 ,  H01G9/12 ,  H01M2/02 ,  H01M2/12

    CPC分类号： H01M2/1264 ,  H01G11/12 ,  H01G11/18 ,  H01G11/78 ,  H01G11/82 ,  H01G9/12 ,  H01M2/0202 ,  H01M2/12 ,  Y02E60/13

    摘要： A package for an electrical component that generates a gas during operation includes a selectively permeable body that allows the gas generated within the package to escape while preventing the escape of desired fluids from the package and the entrance of undesired fluids into the package. In a double layer capacitor according to the invention, the body may be a polymeric material, such as silicone rubber or polypropylene, through which carbon dioxide permeates relatively rapidly but through which water vapor permeates relatively slowly. A package including a container and an attached cover includes a resilient member disposed adjacent the periphery of the cover for dissipating forces that might be applied to an electrically insulating seal in the cover through which an electrical terminal passes.

    摘要翻译： 用于在操作期间产生气体的电气部件的包装包括选择性渗透体，其允许在包装内产生的气体逸出，同时防止所需流体从包装中逸出并且不期望的流体进入包装中。 在根据本发明的双层电容器中，主体可以是诸如硅橡胶或聚丙烯的聚合材料，二氧化碳通过该聚合物材料相对快速地渗透，但是水蒸气通过其相对缓慢地渗透。 包括容器和附接的盖的包装包括邻近盖的周边布置的弹性构件，用于消散可能施加到电气端子通过的盖中的电绝缘密封件的力。

    Intermediates for beta-lactam antibiotics
    44.
    发明授权
    Intermediates for beta-lactam antibiotics 失效
    β-内酰胺抗生素中间体

    公开(公告)号：US4870169A

    公开(公告)日：1989-09-26

    申请号：US184857

    申请日：1988-04-22

    申请人： David A. Evans ,  Eric B. Sjogren

    发明人： David A. Evans ,  Eric B. Sjogren

    IPC分类号： C07D205/085 ,  C07D263/22 ,  C07D405/06 ,  C07D413/04 ,  C07D413/14 ,  C07D463/00

    CPC分类号： C07D405/06 ,  C07D205/085 ,  C07D263/22 ,  C07D413/04 ,  C07D413/14

    摘要： 1-Benzyl(or substituted benzyl)-3.beta.-[4(S)-aryloxazolidin-2-one-3-yl]-4.beta.-(2-arylvinyl)azetidin-2-ones are provided via cycloaddition of a 4(S)-aryloxazolidin-2-one-3-ylacetyl halide and an imine formed with a benzylamine and a 3-arylacrolein, e.g. cinnamaldehyde. The azetidinones are useful chiral intermediates in an asymmetric synthesis of 1-carba(1-dethia)-3-hydroxy-3-cephem-4-carboxylic acids and esters and to monocyclic .beta.-lactam antibiotics.

    摘要翻译： 1-苄基（或取代的苄基）-3β-[4（S） - 芳基恶唑烷-2-酮-3-基]-4β-（2-芳基乙烯基）氮杂环丁烷-2-酮通过环（4） S） - 芳基恶唑烷-2-酮-3-基乙酰卤和由苄胺和3-芳基丙烯醛形成的亚胺，例如 肉桂醛。 氮杂环丁酮是1-咔唑（1-脱氢）-3-羟基-3-头孢烯-4-羧酸和酯与单环β-内酰胺抗生素不对称合成中有用的手性中间体。

    Barge tipplers or dumpers
    46.
    发明授权
    Barge tipplers or dumpers 失效
    驳船扒手或翻斗车

    公开(公告)号：US4671725A

    公开(公告)日：1987-06-09

    申请号：US719148

    申请日：1985-04-02

    申请人： David A. Evans ,  Paul J. Dowden

    发明人： David A. Evans ,  Paul J. Dowden

    IPC分类号： B63B35/30 ,  B65G67/48 ,  B65G69/20

    CPC分类号： B63B35/30

    摘要： A tippling installation for the discharge of bulk goods from large barges comprises a dry basin in which a trough-shaped cradle can have its ends sealed against opposite end walls of the basin in which there are lock gates. The cradle provides a holding vessel into which the barges are floated through the lock gates. After closing the gates and draining the cradle, the barge is tipped by rolling the cradle sideways along guide and support tracks which provide positive location while the barge is held clamped in the cradle. The contents of the barge are discharged into a receiving space from which any liquid is drained to separate it from the discharged solids that are then collected. The arrangement is able to prevent pollution of the waterway by the escape of any of the barge contents during discharge. Because they roll on fixed supports relatively little lifting efforts needs to be expanded and very large barges can be handled.

    摘要翻译： 用于从大型驳船排放散装货物的倾斜装置包括一个干盆，其中槽状托架可以将其端部密封在具有锁门的盆的相对端壁上。 摇篮提供一个保持容器，驳船通过锁门浮起。 关闭闸门并排空托架后，驳船将托架侧向沿着引导和支撑轨道横向摇动，这些轨道在驳船夹持在托架中时提供正向位置。 驳船的内容物排放到收集空间中，排放任何液体，以将其与排出的固体分离，然后收集。 这种安排能够在排放期间通过任何驳船内容物的逸出来防止水路污染。 因为他们在固定支架上滚动，所以需要扩大提升力度，可以处理非常大的驳船。

    Sintering method, particularly for forming low ESR capacitor anodes
    48.
    发明授权
    Sintering method, particularly for forming low ESR capacitor anodes 有权
    烧结方法，特别是用于形成低ESR电容器阳极

    公开(公告)号：US08741214B2

    公开(公告)日：2014-06-03

    申请号：US13274393

    申请日：2011-10-17

    申请人： David A. Evans

    发明人： David A. Evans

    IPC分类号： B22F3/12 ,  B22F5/10 ,  B22F7/04 ,  H01G9/052

    CPC分类号： H01G9/052 ,  B22F3/12 ,  B22F5/10 ,  B29C67/04 ,  C25D11/04 ,  C25D11/26 ,  H01G9/012 ,  Y10T428/24744

    摘要： A method of making a sintered article in which a solid object is embedded includes forming a green body of compressed particles with the solid body is partially embedded. The green body includes an opening across which the solid body extends. The green body is sintered to form a sintered body and the opening permits deformation of the solid body in response to stress applied during the sintering process. A sintered article in which a solid body is at least partially embedded includes an opening. The solid body extends across the opening so that the solid body can deform within the opening. The opening in the solid body prevents distortion of the sintered body from a planar configuration during sintering, even when the green body is relatively thin.

    摘要翻译： 制造其中嵌入固体的烧结制品的方法包括形成具有固体的部分地嵌入的压缩颗粒的生坯体。 生坯包括固体延伸穿过的开口。 生坯被烧结以形成烧结体，并且该开口允许固体在响应于在烧结过程中施加的应力而变形。 固体至少部分地嵌入其中的烧结制品包括开口。 固体延伸穿过开口，使得固体可以在开口内变形。 固体中的开口，即使在生坯体相对较薄的情况下也能够防止烧结体在烧结时的平面形状的变形。

    EXTENDED LIFE CAPACITORS
    49.
    发明申请
    EXTENDED LIFE CAPACITORS 审中-公开
    延长寿命电容

    公开(公告)号：US20120127632A1

    公开(公告)日：2012-05-24

    申请号：US12949962

    申请日：2010-11-19

    申请人： David A. Evans ,  Jeffrey N. Reardon ,  David I. Zawacki

    发明人： David A. Evans ,  Jeffrey N. Reardon ,  David I. Zawacki

    IPC分类号： H01G9/022

    CPC分类号： H01G9/022 ,  H01G9/035 ,  H01G11/54 ,  H01G11/62 ,  Y02E60/13

    摘要： Capacitors employing liquid or gel electrolytes have their useful lifetime significantly extended by including, in the electrolyte, a binary mixture of transition metal ion species. Each species has at least two distinct oxidation states when dissolved in the electrolyte. The interaction of the mixture of ion species reduces the potential of the cathode and maintains the potential of the cathode below the hydrogen potential to prevent the reduction of hydrogen ions and the formation of hydrogen. The binary mixture of transition metal species reduces the cathode potential by oxidation of the transition metal species at the anode and reduction of the transition metal species at the cathode. Thus, the rate of decrease in capacitance, increase in equivalent series resistance, and swelling of the capacitor are suppressed. In addition, the ratio of capacitor aging to the quantity of charge passed by the capacitor is decreased by at least a factor of two as compared to previous known extended life capacitors.

    摘要翻译： 使用液体或凝胶电解质的电容器通过在电解质中包含过渡金属离子物质的二元混合物而具有显着延长的其使用寿命。 当溶解在电解质中时，每种物质具有至少两种不同的氧化态。 离子种类的混合物的相互作用降低了阴极的电位，并保持阴极的电位低于氢电势，以防止氢离子的还原和氢的形成。 过渡金属物质的二元混合物通过阳极处的过渡金属物质的氧化和阴极处的过渡金属物质的还原来降低阴极电位。 因此，抑制了电容的减小率，等效串联电阻的增加和电容器的膨胀。 此外，与先前已知的延长寿命电容器相比，电容器老化与通过电容器的电荷量的比率减少至少两倍。