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109 条记录 (耗时 0.024 秒)

    Superconductor connection structure
    82.
    发明授权
    Superconductor connection structure 失效
    超导体连接结构

    公开(公告)号：US06921865B2

    公开(公告)日：2005-07-26

    申请号：US10083504

    申请日：2002-02-27

    申请人： Hiroshi Morita ,  Kazuhide Tanaka ,  Yasuo Suzuki ,  Michiya Okada

    发明人： Hiroshi Morita ,  Kazuhide Tanaka ,  Yasuo Suzuki ,  Michiya Okada

    IPC分类号： H01F6/06 ,  H01B12/02 ,  H01B13/00 ,  H01L39/02 ,  H01R4/68 ,  H01B12/00

    CPC分类号： H01L39/02 ,  H01R4/68 ,  Y10T29/49014

    摘要： Electrical connection of superconducting lines can be achieved by using a low-melting point metal, by mechanical contact of superconducting lines or by welding. According to these methods, however, critical current and critical magnetic field at the connection point are low, and stable connection in a superconducting state has been difficult. The present invention solves these problems and provides a structure and method for connecting superconducting lines. The present invention provides high-performance, high-stability connection of superconducting lines through magnesium diboride (MgB2) powder arranged between superconducting lines.

    摘要翻译： 超导线的电连接可以通过使用低熔点金属，通过超导线的机械接触或通过焊接来实现。 然而，根据这些方法，连接点处的临界电流和临界磁场较低，并且在超导状态下的稳定连接困难。 本发明解决了这些问题，提供了连接超导线路的结构和方法。 本发明通过布置在超导线之间的二硼化镁（MgB 2 N 2）粉末提供超导线路的高性能，高稳定性的连接。

    Magnet for magnetic resonance imaging apparatus
    83.
    发明授权
    Magnet for magnetic resonance imaging apparatus 失效
    磁共振成像装置磁铁

    公开(公告)号：US06909347B2

    公开(公告)日：2005-06-21

    申请号：US10316827

    申请日：2002-12-12

    申请人： Tsuyoshi Wakuda ,  Michiya Okada ,  Shigeru Kakugawa ,  Hiroyuki Watanabe

    发明人： Tsuyoshi Wakuda ,  Michiya Okada ,  Shigeru Kakugawa ,  Hiroyuki Watanabe

    IPC分类号： G01R33/3815 ,  A61B5/055 ,  G01R33/38 ,  G01R33/421 ,  H01F6/00 ,  H01F6/04 ,  H01F1/00

    CPC分类号： G01R33/421 ,  G01R33/3806

    摘要： A magnet for MRI apparatus has a magnetic circuit which includes a magnetic flux path formed by a ferromagnetic material and a magnetic flux path formed by magnetic flux return coils or magnetic flux control coils, so that a 5-gauss line of leakage fluxes can be kept within a sphere 3 m in radius even when the static magnetic field intensity exceeds 1 tesla and a comparatively light magnet for MRI apparatus can be provided. Further, the fluxes escaping vertically from the static magnetic field sources are led compactly to a horizontal direction by installing magnetic flux paths of ferromagnetic materials and coils with polarities opposing those of the static magnetic fields. This arrangement minimizes an increase in the total height of the magnet for MRI apparatus, keeping the magnet within the total height of 3 m.

    摘要翻译： 用于MRI装置的磁体具有磁路，其包括由铁磁材料形成的磁通路径和由磁通量返回线圈或磁通量控制线圈形成的磁通路径，从而可以保持5高斯线的漏磁通 即使静磁场强度超过1特斯拉，也可以设置3μm以上的球面，能够提供比较轻的MRI用磁铁。 此外，通过安装具有与静磁场的极性相反的极性的铁磁材料和线圈的磁通路径，将从静态磁场源垂直逃逸的磁通紧紧地引导到水平方向。 这种布置使得用于MRI装置的磁体的总高度增加最小化，从而将磁体保持在3m的总高度内。

    Superconducting Circuit, Production Method of Superconducting Joints, Superconducting Magnet, and Production Method of Superconducting Magnet
    87.
    发明申请
    Superconducting Circuit, Production Method of Superconducting Joints, Superconducting Magnet, and Production Method of Superconducting Magnet 有权
    超导电路，超导接头的制造方法，超导磁体及超导磁体的制造方法

    公开(公告)号：US20110028327A1

    公开(公告)日：2011-02-03

    申请号：US12845474

    申请日：2010-07-28

    申请人： Motomune Kodama ,  Michiya Okada ,  Masaya Takahashi

    发明人： Motomune Kodama ,  Michiya Okada ,  Masaya Takahashi

    IPC分类号： H01F6/06 ,  H01B12/04 ,  H01L39/24 ,  H01L39/02 ,  B32B15/00

    CPC分类号： H01L39/02 ,  H01F6/065 ,  Y10T428/12819

    摘要： A superconducting circuit including a superconducting joint that joints a niobium titanium superconducting wire having a structure where a filament made of niobium titanium alloy is arranged in a matrix made of copper or copper alloy and other superconducting wire, in which a volume ratio or a surface density of an α-Ti precipitation in the niobium titanium alloy of the filament in the superconducting joint is smaller than the volume ratio or the surface density of the α-Ti precipitation in the niobium titanium alloy of the filament in the niobium titanium superconducting wire in a portion other than the superconducting joint.

    摘要翻译： 包括超导接头的超导电路，该超导接头与具有由铌钛合金制成的长丝结构的铌钛超导线连接，以铜或铜合金制成的基体和其他超导线，其中体积比或表面密度 在超导接头中的长丝的铌钛合金中的α-Ti析出小于铌钛超导线中的铌钛合金中的α-Ti析出物的体积比或表面密度 超导接头以外的部分。

    NMR system and probe positioning method
    89.
    发明授权
    NMR system and probe positioning method 失效
    NMR系统和探针定位方法

    公开(公告)号：US07521929B2

    公开(公告)日：2009-04-21

    申请号：US11621611

    申请日：2007-01-10

    申请人： Mitsuyoshi Tsuchiya ,  Michiya Okada ,  Fumio Iida ,  Hiromitsu Seino

    发明人： Mitsuyoshi Tsuchiya ,  Michiya Okada ,  Fumio Iida ,  Hiromitsu Seino

    IPC分类号： G01V3/00

    CPC分类号： G01R33/56563 ,  G01R33/307 ,  G01R33/3806 ,  G01R33/3875

    摘要： In an NMR apparatus provided with a split type magnet, in order to position a probe at a high precision in a narrow homogeneous magnetic field space, a positioning of a center of a probe coil is first located to a proper position by inserting an NMR probe from a horizontal bore. At this position, a sample tube is inserted from a vertical bore, and an NMR signal is measured from the probe coil. An NMR signal measuring apparatus amplifies the NMR signal from the probe coil, and executes an A/D conversion so as to determine an NMR spectrum signal, and an NMR signal analyzing apparatus compares the NMR spectrum signal. A probe is set at a position where a sharpness of the spectrum is largest, that is, a magnetic field homogeneity coefficient is high, by repeating the operations mentioned above.

    摘要翻译： 在具有分割型磁体的NMR装置中，为了在窄均匀磁场空间中以高精度定位探针，探针线圈的中心的定位首先通过插入NMR探针而位于适当的位置 从水平孔。 在该位置，从垂直孔插入样品管，并从探针线圈测量NMR信号。 NMR信号测量装置放大来自探针线圈的NMR信号，并执行A / D转换以确定NMR光谱信号，NMR信号分析装置比较NMR光谱信号。 通过重复上述操作，将探测器设置在光谱的清晰度最大的位置，即磁场均匀性系数较高的位置。