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    • 21. 发明授权
    • Orthogonal flux-gate type magnetic sensor
    • 正交磁通门型磁传感器
    • US06380735B1
    • 2002-04-30
    • US09558369
    • 2000-04-26
    • Makoto Kawakami
    • Makoto Kawakami
    • G01R3304
    • G01R33/02G01R15/185G01R33/04Y10T29/49007Y10T29/4902Y10T29/49073Y10T29/49078
    • A magnetic sensor of orthogonal flux-gate type is provided with a cylindrical core made of a soft magnetic material; an internal conductor that is placed inside the core; a detection coil wound up on the core; and an external conductor that is placed around the core and electrically connected to the internal conductor. A high-frequency current is allowed to flow through the internal core so that a magnetic field to be measured which resides around the detection coil is changed and the intensity and direction of the magnetic field to be measured is detected on the basis of an output of the detection coil. Since the external conductor is placed on the periphery of the core, it is possible to prevent the magnetic flux formed by the core from magnetizing any space, and consequently to concentrate the magnetic field on the core.
    • 正交磁通门型磁传感器设有由软磁材料制成的圆柱形磁芯; 放置在芯体内部的内部导体; 检测线圈卷绕在芯上; 以及放置在芯体周围并与内部导体电连接的外部导体。 允许高频电流流过内芯,使得位于检测线圈周围的要测量的磁场发生变化,并且基于输出测量的被测磁场的强度和方向被检测 检测线圈。 由于外部导体被放置在芯的外围,所以可以防止由芯形成的磁通磁化任何空间,从而将磁场集中在磁芯上。
    • 22. 发明授权
    • DC current sensor
    • 直流电流传感器
    • US5523677A
    • 1996-06-04
    • US321792
    • 1994-10-12
    • Makoto KawakamiShigeru Yamaguchi
    • Makoto KawakamiShigeru Yamaguchi
    • G01R15/18G01R19/00G01R33/00
    • G01R19/20G01R15/185
    • A DC current sensor has a detecting core with a plurality of detecting core members adapted to be divided in a circumferential direction for receiving the lead wire. A pair of annular exciting cores on one of said detecting core members formed of saturable magnetic material has a core intersection inter-connected perpendicularly to the circumferential direction of said detecting core members, and are disposed oppositely in spaced relation with said detecting core members to magnetically saturate a portion thereof by a magnetic flux produced substantially in the perpendicular direction against a magnetic flux in the circumferential direction, produced by the DC current flowing through said lead wire being detected, and to interrupt a magnetic path by the magnetic flux in the circumferential direction periodically. Exciting coils are wound around the exciting cores in negative-phase excitation.
    • 直流电流传感器具有检测铁芯,多个检测铁心部件适于沿圆周方向分割以接收引线。 在由可饱和磁性材料形成的所述检测铁心部件中的一个上的一对环形激磁芯具有与所述检测铁芯部件的圆周方向垂直的芯部交叉部,并且与所述检测铁芯部件相对地配置成磁性 使其一部分由大致垂直方向产生的磁通量相对于周向上的磁通量产生,该磁通量是由流经所检测的引线的直流电流产生的,并且通过周向上的磁通中断磁路 定期地 励磁线圈以负相激励缠绕在激磁芯上。
    • 26. 发明授权
    • Mover and linear motor
    • 移动和线性电机
    • US08723376B2
    • 2014-05-13
    • US13145938
    • 2010-01-22
    • Makoto Kawakami
    • Makoto Kawakami
    • H02K41/02
    • H02K41/02H02K1/146H02K1/278H02K7/08H02K29/03H02K41/031H02K2207/03H02K2213/03
    • A mover, in which at each outer surface of a cornered tubular inner yoke, a flat plate magnet magnetized from inside to outside in a direction perpendicular to the outer surface, a flat plate magnet magnetized in an axial direction of the inner yoke, a flat plate magnet magnetized from outside to inside in the direction perpendicular to the outer surface, and a flat plate magnet magnetized in the axial direction of the inner yoke are alternately provided in this order, is passed through an armature in which a first single pole unit and a second single pole unit rotated by 90° with respect to the first single pole unit are alternately stacked, thus forming a linear motor. Windings are collectively wound around core portions of the first single pole unit. Positions of the magnets provided at the outer surfaces of the inner yoke are deviated from each other.
    • 一个移动器,其中在角的管状内轭的每个外表面处,在垂直于外表面的方向上从内向外磁化的平板磁体,沿着内轭的轴向磁化的平板磁体,平坦的 从与外表面垂直的方向从外侧向内侧磁化的板状磁体,沿着内侧轭铁的轴向磁化的平板状磁体依次交替设置,通过电枢,第一单极单元和 相对于第一单极单元旋转90°的第二单极单元交替堆叠,从而形成线性电动机。 绕组集中缠绕在第一单极单元的芯部分上。 设置在内轭铁的外表面处的磁体的位置彼此偏离。
    • 27. 发明授权
    • Swash-plate variable volume chamber-type fluid machine
    • 斜盘式可变容积腔式流体机
    • US07351047B2
    • 2008-04-01
    • US10521770
    • 2003-09-24
    • Tohru KawakamiMakoto Kawakami
    • Tohru KawakamiMakoto Kawakami
    • F03C4/00F04C15/00
    • F01C3/06F01C3/085F01C19/085F04C2240/30
    • The present invention provides an improved swash plate type variable capacity fluid machine which is fluid-tight, simple in structure, quiet in operation, and highly durable, yet without increasing its size, weight, and the amount of power loss. The swash plate type variable capacity fluid machine includes: a cone; a disk; an enclosure wall whose inner shpherical surface surrounds the outer circumference of the disk; and a partition plate movably fitted in a groove of the cone. The cone and the disk are arranged to confront each other on an abutment line, thereby defining a plurality of variable capacity compartments. Supplying/discharging holes are provided to communicate with the variable capacity compartments, supplying and discharging a fluid there from. A synchronous mechanism causes the cone and the disk to rotate about their center axis in synchronization.
    • 本发明提供了一种改进的斜盘式可变容量流体机械,其流体密封,结构简单,操作安静,并且耐用性高,但不增加其尺寸,重量和功率损失量。 斜盘式可变容量流体机械包括:锥体; 磁盘 外壳壁,其内部球面表示围绕盘的外圆周; 以及可移动地装配在锥体的凹槽中的隔板。 锥体和盘被布置成在邻接线上彼此面对,由此限定多个可变容量的隔间。 提供/排出孔以与可变容量隔间连通,从那里供应和排出流体。 同步机构使锥体和圆盘绕其中心轴线同步旋转。