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13 条记录 (耗时 0.026 秒)

    Surface flaw detection method
    6.
    发明授权
    Surface flaw detection method 失效
    表面探伤法

    公开(公告)号：US4647196A

    公开(公告)日：1987-03-03

    申请号：US695231

    申请日：1985-01-28

    申请人： Asahiro Kuni ,  Kazuo Yamaguchi ,  Nobuyuki Akiyama ,  Juro Endo

    发明人： Asahiro Kuni ,  Kazuo Yamaguchi ,  Nobuyuki Akiyama ,  Juro Endo

    IPC分类号： G01B9/02 ,  G01N21/88

    CPC分类号： G01N21/88 ,  G01B9/02021 ,  G01B9/02032

    摘要： A flaw detection method for detecting flaw existing in the surface of a substantially plate-shaped examination object by making use of an interference of light. A coherent light is applied to the surface of the examination object and also to a reference mirror surface. The light reflected by the surface of the examination object and the light reflected by the reference mirror surface are made to interfere with each other to form an interference image from which the flaw is detected. The reference mirror surface is disposed at an optical inclination to the surface of the examination object. The reference mirror surface may be the reverse surface of the examination object while the obserse side of the same is being examined. Infrared coherent ray is preferably used as the coherent light.

    摘要翻译： 一种用于通过利用光的干涉来检测存在于基本上板状的检查对象的表面中的缺陷的探伤方法。 相干光被施加到检查对象的表面，并且也被施加到参考镜表面。 由检查对象的表面反射的光和由参考镜面反射的光被相互干涉，形成检测出缺陷的干涉图像。 参考镜面设置在与检查对象表面成光学倾斜度。 参考镜面可以是检查对象的反面，同时正在检查异物侧。 红外相干光线优选用作相干光。

    Minimum bearing load, high precision actuator arm with force couple actuation
    7.
    发明授权
    Minimum bearing load, high precision actuator arm with force couple actuation 失效
    最小轴承负载，高精度执行器臂，带力联动

    公开(公告)号：US5523911A

    公开(公告)日：1996-06-04

    申请号：US143531

    申请日：1993-10-25

    申请人： Masahiro Mita ,  Juro Endo ,  Ken G. Wasson

    发明人： Masahiro Mita ,  Juro Endo ,  Ken G. Wasson

    IPC分类号： G11B5/55 ,  G11B21/08 ,  H02K41/02 ,  H02K41/035

    CPC分类号： G11B5/5521 ,  G11B21/083 ,  H02K41/02 ,  H02K41/0358

    摘要： A head positioning system for a magnetic disk drive includes an actuator arm that is mounted on a pivot bearing so that the axis of rotation of the arm passes through the center of mass of the arm. A Faraday-type motor using a single coil applies a force couple to the arm at a location offset from the center of mass of the arm with a constant moment arm. The offset force couple creates a pure torque about the axis of rotation of the arm (that is, about the pivot bearing) in order to substantially eliminate reaction forces on the bearing; this greatly lessens wear on the bearing and in turn reduces the non-repeatable run-out error of the read/write head mounted at the end of the arm. Various arrangements of permanent magnets and motor windings are provided to create the force couple. Furthermore, in certain embodiments, yokes are included to increase the magnetic field strength of the motor, thus increasing its power and reducing magnetic leakage and the risk of disturbing the data stored in the magnetic disk medium.

    摘要翻译： 用于磁盘驱动器的头部定位系统包括安装在枢转轴承上的致动器臂，使得臂的旋转轴线穿过臂的质心。 使用单个线圈的法拉第型电动机在具有恒定力矩臂的位置偏离臂的质心的位置处对臂施加力耦合。 偏移力对围绕臂的旋转轴线（即，绕枢转轴承）产生一个纯扭矩，以便基本上消除轴承上的反作用力; 这大大减轻了轴承的磨损，从而降低了安装在手臂末端的读/写头的不可重复的跳动误差。 提供永磁体和电机绕组的各种布置以产生力耦合。 此外，在某些实施例中，包括磁轭以增加电动机的磁场强度，从而增加其功率并减少磁泄漏以及干扰存储在磁盘介质中的数据的风​​险。

    Piezoelectric loudspeaker and a method for manufacturing the same
    9.
    发明授权
    Piezoelectric loudspeaker and a method for manufacturing the same 失效
    压电扬声器及其制造方法

    公开(公告)号：US5684884A

    公开(公告)日：1997-11-04

    申请号：US456101

    申请日：1995-05-30

    申请人： Chitose Nakaya ,  Shigeru Jomura ,  Juro Endo

    发明人： Chitose Nakaya ,  Shigeru Jomura ,  Juro Endo

    IPC分类号： H04R17/00 ,  H04R25/00

    CPC分类号： H04R17/00

    摘要： Disclosed is a piezoelectric loudspeaker. According to the present invention, a piezoelectric loudspeaker comprises: a flat compound piezoelectric sheet in which multiple piezoelectric devices are arranged in an organic material; electrodes which are provided on respective surfaces of the compound piezoelectric sheet; an acoustic impedance matching support layer for maintaining the flat compound piezoelectric sheet in a curved shape and for matching an acoustic impedance; and a support frame for supporting the compound piezoelectric sheet at its circumference. Thus, sound reproduction with a desirable frequency properties that have little distortion can be performed.

    摘要翻译： 公开了一种压电扬声器。 根据本发明，压电扬声器包括：平面复合压电片，其中多个压电器件布置在有机材料中; 设置在复合压电片的各个表面上的电极; 声阻抗匹配支撑层，用于将扁平化合物压电片保持在弯曲形状并用于匹配声阻抗; 以及用于在其圆周处支撑复合压电片的支撑框架。 因此，可以执行具有很小变形的期望频率特性的声音再现。

    Power loss actuated magnetic latch system for head-arm assembly
    10.
    发明授权
    Power loss actuated magnetic latch system for head-arm assembly 失效
    用于头臂组装的断电致动磁锁系统

    公开(公告)号：US5495376A

    公开(公告)日：1996-02-27

    申请号：US267307

    申请日：1994-06-29

    申请人： Ken G. Wasson ,  Masahiro Mita ,  Juro Endo

    发明人： Ken G. Wasson ,  Masahiro Mita ,  Juro Endo

    IPC分类号： G11B21/22 ,  G11B5/54

    CPC分类号： G11B21/22

    摘要： A latch mechanism, especially for use in a disk drive, includes a locking arm that rotates about a pivot and engages a slot on the moving member that is to be locked, such as a head-arm. In a fixed coil embodiment, a permanent magnet is attached to an inboard end of the locking arm within the windings of a coil. Ferrous elements are mounted between the coil and the pivot of the locking arm. The ferrous elements attract the permanent magnet to hold the locking arm securely in either a latching or an unlatching state. When the coil is energized, poles are induced in the ferrous elements such that one repels the permanent magnet away from its then current state into the opposite state, while the other ferrous element attracts the permanent magnet to the other state. The magnetic field of the coil simultaneously applies a pure torque to the locking arm. This torque rotates the locking arm so that the arm changes to its other state. In a moving coil embodiment, the coil and ferrous elements are attached to the inboard end of the locking arm, and fixed permanent magnets are mounted in a housing or yoke on either side of the coil. No external power is necessary to hold the locking arm in either the latched or unlatched state. The state of the locking arm is determined by the last direction of electric current flow in the coil.

    摘要翻译： 特别是用于磁盘驱动器的闩锁机构包括锁定臂，所述锁定臂围绕枢轴旋转并与待锁定的移动构件（例如头臂）上的狭槽接合。 在固定线圈实施例中，在线圈的绕组内的永久磁铁连接到锁定臂的内侧端。 铁元件安装在线圈和锁定臂的枢轴之间。 铁元件吸引永磁体以将锁定臂牢固地保持在闩锁或解锁状态。 当线圈通电时，在铁元件中引起极，使得一个永磁体从其当前状态排除到相反的状态，而另一个铁元件将永磁体吸引到另一个状态。 线圈的磁场同时向锁定臂施加纯扭矩。 该扭矩使锁定臂旋转，使得手臂改变到其他状态。 在移动线圈实施例中，线圈和铁元件附接到锁定臂的内侧端，并且固定永磁体安装在线圈两侧的壳体或轭中。 不需要外部电源来将锁定臂保持在锁定或解锁状态。 锁定臂的状态由线圈中电流流动的最后方向决定。