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11. 发明授权

US4166235A Magnetron comprising ferromagnetic material members axially magnetized in opposite directions 失效
标题翻译：包含以非对称方向磁化的纤维材料成员的磁铁
公开(公告)号：US4166235A
公开(公告)日：1979-08-28
申请号：US841915
申请日：1977-10-13
申请人： Seizi Yamashita , Tunehiro Endo , Yoshio Ishida
发明人： Seizi Yamashita , Tunehiro Endo , Yoshio Ishida
IPC分类号： H01J23/10 , H01J23/14 , H01J25/50
CPC分类号： H01J23/14 , H01J23/10
摘要： A magnetron comprising a cathode, an anode cylinder having a plurality of vanes disposed around the cathode for defining an interaction space between the cathode and the vanes, and a pair of permanent magnets disposed opposite to each other for producing a magnetic field in the interaction space. One of the permanent magnets is annular in shape, and this annular magnet is magnetized relative to the other magnet so that their same poles confront each other thereby reducing the size of the magnetron.

12. 发明授权

US4678971A Linear motor and control method thereof 失效
标题翻译：线性电动机及其控制方法
公开(公告)号：US4678971A
公开(公告)日：1987-07-07
申请号：US817623
申请日：1986-01-10
申请人： Hiroshi Kanazawa , Seizi Yamashita , Kunio Miyashita
发明人： Hiroshi Kanazawa , Seizi Yamashita , Kunio Miyashita
IPC分类号： H02K41/02 , H02K41/00
CPC分类号： H02K41/031
摘要： A linear motor comprises a first magnetic pole having a plurality of uneven magnetic pole teeth of magnetic material arranged longitudinally at predetermined regular intervals of length, and a second magnetic pole having a yoke and plurality of uneven magnetic pole teeth made of magnetic material opposed to the first magnetic pole with a slight gap and a coil wound on each magnetic pole tooth and the permanent magnets, in which the relative position of the first and second magnetic poles in the longitudinal direction can be varied. The longitudinal lengths of the protruded portion of the second magnetic pole are substantially equal with each other. The longitudinal length of the recessed portion of the second magnetic pole is set to about one-third of the longitudinal length of the protruded portion of the first magnetic pole. The number of the protruded portions of the first magnetic pole is set to be a multiple of two.
摘要翻译：线性电动机包括：第一磁极，具有多个以规定的长度方向纵向布置的磁性材料的不均匀的磁极齿;以及具有磁轭的第二磁极和由磁性材料相对的磁性材料构成的多个不均匀的磁极齿第一磁极具有微小的间隙，线圈缠绕在每个磁极齿和永磁体上，其中第一和第二磁极在纵向上的相对位置可以改变。第二磁极的突出部分的纵向长度基本相等。第二磁极的凹部的纵向长度被设定为第一磁极的突出部的纵向长度的大约三分之一。第一磁极的突出部的数量被设定为2的倍数。

13. 发明授权

US4403161A Permanent magnet rotor 失效
标题翻译：永磁转子
公开(公告)号：US4403161A
公开(公告)日：1983-09-06
申请号：US188098
申请日：1980-09-17
申请人： Kunio Miyashita , Seizi Yamashita , Hiroshi Watanabe , Shoji Tanabe
发明人： Kunio Miyashita , Seizi Yamashita , Hiroshi Watanabe , Shoji Tanabe
IPC分类号： H02K1/27 , H02K21/12
CPC分类号： H02K1/276
摘要： A permanent magnet rotor used in a synchronous motor or the like comprising a shaft, an iron core and permanent magnets is disclosed. Each of the permanent magnets which is mounted on the hollow rotor core has an arc shape, and the radial center of the arc shape is positioned on the axis of the shaft or at a point slightly deviated from the shaft axis.
摘要翻译：公开了一种用于包括轴，铁芯和永磁体的同步电动机等中的永磁转子。安装在中空转子铁芯上的每个永磁体具有弧形，并且弧形的径向中心位于轴的轴线上或者位于稍微偏离轴线的点上。

14. 发明授权

US4039871A Cooling device for use in a low inertia electric motor 失效
标题翻译：用于低功率电动机的冷却装置
公开(公告)号：US4039871A
公开(公告)日：1977-08-02
申请号：US621768
申请日：1975-10-14
申请人： Seizi Yamashita , Kazuo Onishi
发明人： Seizi Yamashita , Kazuo Onishi
IPC分类号： H02K9/02 , H02K9/00
CPC分类号： H02K9/00
摘要： A cooling device for use in a low inertia electric motor, in which there are provided a plurality of main passages for cooling air, around the outer circumferential surface of a cylindrical armature which surface is surrounded by magnetic pole pieces with gaps left therebetween. The main passages extend in the axial direction of the armature, so that cooling air is introduced under pressure from the ends of the aforesaid main passages on one side and then discharged from the other ends of the main passages, so as to cool the outer circumferential surface of the armature. At least half of those main passages are of such an arrangement that the cross sectional areas of the main passages are gradually varied from inlets of the main passages towards the outlets thereof, respectively so that a circumferential flow of air through said gaps is created.

15. 发明授权

US5101148A Electric motor actuator 失效
标题翻译：电动马达执行器
公开(公告)号：US5101148A
公开(公告)日：1992-03-31
申请号：US511925
申请日：1990-04-16
申请人： Seizi Yamashita , Kunio Miyashita , Hironori Okuda
发明人： Seizi Yamashita , Kunio Miyashita , Hironori Okuda
IPC分类号： H02P29/00 , G05B19/21 , H02P23/00
CPC分类号： G05B19/21 , H02P23/186 , G05B2219/41068 , G05B2219/41358 , G05B2219/42318
摘要： An actuator in which, when the reduction ratio of a reduction gear unit is 1/N, the number of pulses of a second encoder is set to be equal to N times (the number of pulses of a first encoder), whereby a pulse processing circuit for detecting a torsion angle is made remarkably simple.
摘要翻译：一种致动器，其中当减速装置的减速比为1 / N时，将第二编码器的脉冲数设定为N倍（第一编码器的脉冲数），从而进行脉冲处理用于检测扭转角的电路非常简单。

16. 发明授权

US4818939A Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements 失效
标题翻译：利用具有串联连接的MR元件的桥接电路来磁性检测位置或速度或移动体的装置
公开(公告)号：US4818939A
公开(公告)日：1989-04-04
申请号：US19545
申请日：1987-02-26
申请人： Tadashi Takahashi , Seizi Yamashita , Kunio Miyashita , Syooichi Kawamata
发明人： Tadashi Takahashi , Seizi Yamashita , Kunio Miyashita , Syooichi Kawamata
IPC分类号： G01B7/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/244 , G01D5/245 , G01P3/487 , G01B7/14 , G01P3/42
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/24476 , G01D5/2451 , G01P3/487
摘要： Magnetic poles are provided continuously with a pitch .lambda. on the peripheral portion of a drum rotated in accordance with a movement of a moving body. A magnetic sensor is provided in opposition to these poles. The sensor is formed of two magnetoresistive element pairs which are spaced from each other at .lambda./6, and the two elements in each pair are arranged in positions spaced from each other at .lambda./2. The two elements in each pair are connected in series to form a bridge circuit. The signals obtained from the nodes of the series-connected elements in the two element pairs are differentially amplified so that third harmonic wave components are eliminated, and a signal having no distortion and representative of the position or speed of the moving body can be obtained.
摘要翻译：在根据移动体的运动旋转的滚筒的周边部分上连续地设有螺距λ的磁极。提供与这些极相对的磁传感器。传感器由两个磁阻元件对形成，它们以λ/ 6彼此间隔开，并且每对中的两个元件被布置在以λ/ 2彼此间隔开的位置。每对中的两个元件串联连接以形成桥接电路。从两个元件对中的串联元件的节点获得的信号被差分放大，从而消除了三次谐波分量，并且可以获得没有失真并且代表移动体的位置或速度的信号。

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