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50 条记录 (耗时 0.021 秒)

    Method for the preparation of a double-coated body of boron nitride
    11.
    发明授权
    Method for the preparation of a double-coated body of boron nitride 失效
    制备氮化硼双层体的方法

    公开(公告)号：US5882730A

    公开(公告)日：1999-03-16

    申请号：US499345

    申请日：1995-07-07

    申请人： Noboru Kimura ,  Yukio Kurosawa

    发明人： Noboru Kimura ,  Yukio Kurosawa

    IPC分类号： H05B3/06 ,  C04B41/52 ,  C04B41/89 ,  C23C16/26 ,  C23C16/34 ,  H01C7/02 ,  B05D3/12

    CPC分类号： C04B41/009 ,  C04B41/52 ,  C23C16/26 ,  C23C16/342 ,  H01C7/021

    摘要： An improvement is proposed in the preparation of, for example, a ceramic heater consisting of a substrate plate of boron nitride, a patterned layer of pyrolytic graphite (PG) on the substrate to serve as an electric resistance element and an overcoating layer of pyrolytic boron nitride (PBN) in a process comprising the steps of depositing PG on the substrate surface, pattern-wise removing the PG layer by mechanical working to form grooves and depositing PBN all over. According to the inventive improvement, which can be obtained by forming the grooves in such a fashion that the angle between the direction of a normal line to the facet surface formed by the mechanical working and the growing direction of the substrate of boron nitride is in the range from 0.degree. to 45.degree. so that the internal stress caused in the overcoating layer, which is due to the anisotropy in the thermal expansion of boron nitride, is decreased to prevent the overcoating layer from occurrence of cracks and falling during service.

    摘要翻译： 在制备例如由氮化硼的衬底板，作为电阻元件的基板上的热解石墨（PG）的图案化层和热解硼的外涂层 氮化物（PBN），其包括在基板表面上沉积PG的步骤，通过机械加工以图形方式移除PG层以形成沟槽并遍及PBN沉积。 根据本发明的改进，其可以通过以如下方式形成凹槽来获得：通过机械加工形成的法线与通过机械加工形成的小面之间的角度与氮化硼基板的生长方向之间的角度在 范围为0°〜45°，使得由于氮化硼的热膨胀的各向异性而导致的外涂层的内应力降低，防止外涂层在使用过程中发生裂纹和下落。

    Method forming an electric contact in a vacuum circuit breaker
    13.
    发明授权
    Method forming an electric contact in a vacuum circuit breaker 失效
    在真空断路器中形成电接点的方法

    公开(公告)号：US5697150A

    公开(公告)日：1997-12-16

    申请号：US490607

    申请日：1995-06-07

    申请人： Katsuhiro Komuro ,  Yoshitaka Kojima ,  Yukio Kurosawa ,  Yoshio Koguchi ,  Toru Tanimizu ,  Yoshimi Hakamata ,  Shunkichi Endo

    发明人： Katsuhiro Komuro ,  Yoshitaka Kojima ,  Yukio Kurosawa ,  Yoshio Koguchi ,  Toru Tanimizu ,  Yoshimi Hakamata ,  Shunkichi Endo

    IPC分类号： C22C1/04 ,  H01H1/02 ,  H01H11/04 ,  H01H33/664 ,  H01R43/16

    CPC分类号： H01H33/664 ,  C22C1/045 ,  H01H1/0203 ,  B22F2998/00 ,  H01H11/041 ,  Y10T29/49206

    摘要： According to the present invention there are provided a highly reliable electrode of high strength which undergoes little change even with the lapse of time, and a method for making the same, as well as a vacuum valve using such electrode and a vacuum circuit breaker using such vacuum valve. The vacuum circuit breaker has a fixed electrode and a movable electrode, each comprising an arc electrode, an arc electrode support member for supporting the arc electrode, and a coil electrode contiguous to the arc electrode support member, the arc electrode, the arc electrode support member and the coil electrode being formed as an integral structure by melting, not by bonding, particularly the arc electrode support member and the coil electrode being constituted by a Cu alloy containing 0.05-2.5% by weight of at least one of Cr, Ag, W, V and Zr.

    摘要翻译： 根据本发明，提供了一种高可靠性的电极，其高强度即使经过时间也几乎不发生变化，其制造方法以及使用这种电极的真空阀和使用这种电极的真空断路器 真空阀。 真空断路器具有固定电极和可动电极，每个电极包括弧形电极，用于支撑电弧电极的弧形电极支撑部件和与电弧电极支撑部件邻接的线圈电极，电弧电极，电弧电极支撑体 元件和线圈电极通过熔化而不是通过结合形成为一体结构，特别是电弧电极支撑件和线圈电极由含有0.05-2.5重量％的Cr，Ag， W，V和Zr。

    Gas isolated disconnecting switch and gas isolated switching device
    14.
    发明授权
    Gas isolated disconnecting switch and gas isolated switching device 失效
    气体隔离开关和气体隔离开关装置

    公开(公告)号：US5410116A

    公开(公告)日：1995-04-25

    申请号：US879997

    申请日：1992-05-08

    申请人： Jun Ozawa ,  Toshio Ishikawa ,  Yukio Kurosawa

    发明人： Jun Ozawa ,  Toshio Ishikawa ,  Yukio Kurosawa

    IPC分类号： H01H33/16 ,  H01H31/32 ,  H01H33/12 ,  H01H33/64

    CPC分类号： H01H33/122 ,  H01H31/32

    摘要： A gas isolated disconnecting switch is provided which performs a sufficient restriking surge suppressing function, induces no adverse effect on the operation of a circuit breaker disposed within the system and always enables the circuit breaker to surely interrupt a fault current. Under the closed condition of the gas isolated disconnecting switch, a main stationary member 6 engages with a main movable member 16 and an auxiliary movable member 17 with an auxiliary stationary member 8 respectively. Accordingly the portion of an auxiliary conductor 7 which passes through a cylindrical magnetic body 9 is short-circuited via the main stationary member 6 and the main movable member 16, and no influence is induced on the operation of the circuit breaker disposed in the system. During the opening operation of the disconnecting switch, the auxiliary movable member 17 disengages with a time delay. At this moment, the current flows through the portion of the auxiliary conductor 7 which passes through the cylindrical magnetic body 9 to thereby perform a sufficient restriking surge suppressing function.

    摘要翻译： 提供了一种隔离气体隔离开关，其执行足够的再起弧浪涌抑制功能，不会对设置在系统内的断路器的操作产生不利影响，并且总是使得断路器能够可靠地中断故障电流。 在气体隔离断路器的闭合状态下，主固定构件6分别与辅助固定构件8与主活动构件16和辅助活动构件17接合。 因此，通过圆柱形磁体9的辅助导体7的部分经由主固定构件6和主可动构件16短路，并且不会对设置在系统中的断路器的操作产生影响。 在断开开关的打开操作期间，辅助可动构件17随着时间延迟而脱离。 此时，电流流经辅助导体7的通过圆柱形磁体9的部分，从而进行足够的再起弧浪涌抑制功能。

    Method of and device for protecting electrical power system
    15.
    发明授权
    Method of and device for protecting electrical power system 失效
    保护电力系统的方法和装置

    公开(公告)号：US5305174A

    公开(公告)日：1994-04-19

    申请号：US753945

    申请日：1991-09-03

    申请人： Masao Morita ,  Toshiaki Ueda ,  Yukio Kurosawa ,  Hiroshi Arita ,  Tokio Yamagiwa

    发明人： Masao Morita ,  Toshiaki Ueda ,  Yukio Kurosawa ,  Hiroshi Arita ,  Tokio Yamagiwa

    IPC分类号： H02H9/02 ,  F02B75/02 ,  H02H3/02 ,  H02H7/30 ,  H02H3/08

    CPC分类号： H02H7/30 ,  H02H3/025 ,  F02B2075/027

    摘要： An electrical power system protection device includes a circuit breaker and a switch connected in series to a power line. The protection device also has a current limiting element connected in parallel to the circuit breaker. When the level of electrical current flowing in the power line, detected by a current detector, has exceeded a predetermined first set level, a first over-current detector delivers immediately a trip command to the circuit breaker. As a consequence, fault current is commutated to the current limiting element so that any drop of voltage in the power line upstream of the circuit breaker is greatly suppressed. When a state in which a predetermined second set level is exceeded by the detected current level is continued beyond a predetermined period, a second over-current detector delivers an off command to the switch, thus protecting the upstream portion of the power line against the fault in this power line. The current level is set to fall within a range which activates a momentary element of an over-current relay of a receiving end breaker of a downstream sub-system connected to the power line. In the event of a failure in the downstream power line, the receiving end breaker is tripped immediately so that the sound portion of the power line is reset to a normal state of operation.

    摘要翻译： 电力系统保护装置包括断路器和与电力线串联连接的开关。 保护装置还具有与断路器并联连接的限流元件。 当由电流检测器检测到的在电力线中流动的电流的电平已经超过预定的第一设定电平时，第一过电流检测器立即向断路器提供跳闸命令。 因此，故障电流被转换到限流元件，从而大大抑制了在断路器上游的电力线中的任何电压下降。 当预定的第二设定电平超过检测到的电流电平的状态持续超过预定周期时，第二过电流检测器向开关递送关断命令，从而保护电力线的上游部分免受故障 在这条电力线上。 当前电平被设定为在激活连接到电力线的下游子系统的接收端断路器的过电流继电器的瞬时元件的范围内。 在下游电力线路发生故障的情况下，接收端子断路器立即跳闸，使得电力线路的声音部分被复位到正常的操作状态。

    Vacuum switch and method of manufacturing the same
    16.
    发明授权
    Vacuum switch and method of manufacturing the same 失效
    真空开关及其制造方法

    公开(公告)号：US4546222A

    公开(公告)日：1985-10-08

    申请号：US584903

    申请日：1984-02-29

    申请人： Ryuji Watanabe ,  Akira Wada ,  Hisashi Ando ,  Seiki Shimizu ,  Yukio Kurosawa ,  Kiyoji Iwashita

    发明人： Ryuji Watanabe ,  Akira Wada ,  Hisashi Ando ,  Seiki Shimizu ,  Yukio Kurosawa ,  Kiyoji Iwashita

    IPC分类号： H01H33/66 ,  H01H1/02 ,  H01H33/664

    CPC分类号： H01H33/6644 ,  H01H1/0203

    摘要： Disclosed is a vacuum switch having a container and a pair of contact electrodes, and a method of manufacturing the same, in which at least one of the contact electrodes is constituted by a member made up of a skeleton containing cobalt as its principal component with pores into which a copper alloy containing copper as its principal component, silver, and a low melting point and high vapor pressure element having substantially no or very low solid-solubility with respect to the copper at a room temperature is impregnated.

    摘要翻译： 公开了一种具有容器和一对接触电极的真空开关及其制造方法，其中至少一个接触电极由包含钴作为主要成分的骨架构成的构件构成，具有孔 浸渍含有铜作为其主要成分的铜合金，银，以及在室温下相对于铜基本上没有或非常低的固溶度的低熔点和高蒸气压元素。

    Vacuum-type circuit interrupter
    17.
    发明授权
    Vacuum-type circuit interrupter 失效
    真空式断路器

    公开(公告)号：US4210790A

    公开(公告)日：1980-07-01

    申请号：US802941

    申请日：1977-06-02

    申请人： Yukio Kurosawa ,  Hiroyuki Sugawara ,  Yukio Kawakubo

    发明人： Yukio Kurosawa ,  Hiroyuki Sugawara ,  Yukio Kawakubo

    IPC分类号： H01H33/66 ,  H01H33/664

    CPC分类号： H01H33/6644 ,  H01H33/6643

    摘要： A pair of relatively movable opposed electrodes for use in a vacuum-type circuit interrupter, each electrode comprising an annular contact-making portion provided at its outer peripheral area, a recessed portion surrounded by this annular contact-making portion, first self-acting magnetically-driving means for driving an arc produced on the surface of the annular contact-making portion to impel the same in a circumferential direction, and second self-acting magnetically driving means for driving an arc produced on the surface of the recessed portion to impel the same toward and onto the surface of the contact-making portion.

    摘要翻译： 一种用于真空型电路断续器的相对移动的相对电极，每个电极包括设置在其外围区域的环形接触形成部分，由该环形接触形成部分包围的凹陷部分， 用于驱动在环形接触部分的表面上产生的电弧沿圆周方向推动的驱动装置，以及用于驱动在凹部的表面上产生的电弧的第二自动磁驱动装置， 与接触部分的表面相同。