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    Fluid dynamic bearing assembly and motor having the same
    1.
    发明申请
    Fluid dynamic bearing assembly and motor having the same 审中-公开
    流体动力轴承组件和电机具有相同的功能

    公开(公告)号：US20120049676A1

    公开(公告)日：2012-03-01

    申请号：US12929043

    申请日：2010-12-23

    申请人： Ta Kyoung Lee ,  Young Tae Kim ,  Seung Woo Ha

    发明人： Ta Kyoung Lee ,  Young Tae Kim ,  Seung Woo Ha

    IPC分类号： F16C32/06 ,  H02K7/08

    CPC分类号： H02K7/08 ,  F16C17/107 ,  F16C32/0629 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  H02K5/1675

    摘要： There are provided a fluid dynamic bearing assembly and a motor having the same. The fluid dynamic bearing assembling according to the present invention may include: a sleeve formed to have a hollow into which a shaft is inserted; a sleeve housing formed to insert the sleeve therein; a bypass passage formed to axially communicate the upper portion and the lower portion of the sleeve between the sleeve and the sleeve housing dispersing pressure of a lubricating fluid in the hollow; and an oil sealing cap having an oil passage communicated with the bypass passage and taper-sealing the lubricating fluid within the oil passage.

    摘要翻译： 提供了一种流体动力轴承组件和具有该轴承组件的马达。 根据本发明的流体动态轴承组装可以包括：形成为具有中空的套筒，轴被插入其中; 套筒壳体，其形成为将套筒插入其中; 旁通通道，其形成为在套筒和套筒壳体之间轴向连通套筒的上部和下部，以分散空心中的润滑流体的压力; 以及油封盖，其具有与所述旁通通路连通的油路，并对所述油路内的润滑流体进行锥形密封。

    Method of manufacturing hydrodynamic bearing
    2.
    发明授权
    Method of manufacturing hydrodynamic bearing 失效
    制造流体动力轴承的方法

    公开(公告)号：US08230599B2

    公开(公告)日：2012-07-31

    申请号：US12285879

    申请日：2008-10-15

    申请人： Young Tae Kim ,  Jin San Kim ,  Young Hwan Lim ,  Il Oung Park ,  Ta Kyoung Lee

    发明人： Young Tae Kim ,  Jin San Kim ,  Young Hwan Lim ,  Il Oung Park ,  Ta Kyoung Lee

    IPC分类号： B21D53/10 ,  B23H3/00

    CPC分类号： B21D53/10 ,  F16C17/02 ,  F16C17/026 ,  F16C33/14 ,  F16C2220/20 ,  F16C2220/66 ,  F16C2220/68 ,  F16C2223/04 ,  Y10T29/49639 ,  Y10T29/49702 ,  Y10T29/49707 ,  Y10T29/49709

    摘要： Disclosed herein is a method of manufacturing a hydrodynamic bearing in which a metal bearing made of sintered metal powder is internally subjected to chemical etching, to form hydrodynamic pressure grooves thereon, thus assuring a high-precision and reliable hydrodynamic bearing. The method includes: compressing metal powder that is a raw material of the bearing in a press unit, and sintering the compressed metal powder at a predetermined temperature, thus preparing a sintered bearing; removing foreign substances adhering to the sintered bearing through a deburring process, and pressing the sintered bearing into a desired shape; forming a hydrodynamic groove, configured to generate hydrodynamic pressure, on an internal surface of the shaped bearing using chemical etching; and conducting a post treatment of cleaning the bearing including the hydrodynamic grooves thereon and drying the bearing.

    摘要翻译： 本文公开了一种制造流体动力轴承的方法，其中由烧结金属粉末制成的金属轴承在内部进行化学蚀刻，以在其上形成流体动力学压力槽，从而确保高精度和可靠的流体动力轴承。 该方法包括：在压制单元中压制作为轴承原料的金属粉末，并在预定温度下烧结压缩的金属粉末，从而制备烧结轴承; 通过去毛刺处理去除附着在烧结轴承上的异物，将烧结后的轴承压制成所希望的形状; 使用化学蚀刻形成在所述成形轴承的内表面上产生流体动力学压力的流体动力槽; 并对其上包括流体动力槽的轴承进行清洗，并干燥轴承。

    Porous hydrodynamic bearing
    3.
    发明申请
    Porous hydrodynamic bearing 审中-公开
    多孔流体动力轴承

    公开(公告)号：US20120014629A1

    公开(公告)日：2012-01-19

    申请号：US13137026

    申请日：2011-07-15

    申请人： Young Tae Kim ,  Ta Kyoung Lee

    发明人： Young Tae Kim ,  Ta Kyoung Lee

    IPC分类号： F16C32/06 ,  B23H3/00

    CPC分类号： F16C33/103

    摘要： There is provided a porous hydrodynamic bearing including a sleeve supporting a shaft, wherein the sleeve is formed of a sintered body containing at least one metal powder selected from a group consisting of SUS 304, SUS 430, and iron (Fe). In the sleeve formed of the sintered body containing at least one metal powder selected from the group consisting of SUS 304, SUS 430, and iron (Fe), surface pores and inner pores are not in communication with each other, whereby a leakage phenomenon of dynamic pressure may be reduced, as compared to a sleeve made of an alloy of Cu and Fe in which opened pores are formed.

    摘要翻译： 提供了一种多孔流体动力轴承，其包括支撑轴的套筒，其中套筒由包含至少一种选自SUS 304，SUS 430和铁（Fe）的金属粉末的烧结体形成。 在由含有选自SUS304，SUS330和铁（Fe）中的至少一种金属粉末的烧结体形成的套筒中，表面孔和内孔彼此不连通，由此产生泄漏现象 与由形成开放孔的Cu和Fe的合金制成的套管相比，可以减小动态压力。

    Spindle motor
    4.
    发明申请
    Spindle motor 审中-公开
    主轴电机

    公开(公告)号：US20120104889A1

    公开(公告)日：2012-05-03

    申请号：US13317852

    申请日：2011-10-31

    申请人： Young Tae Kim ,  Jin San Kim ,  Ta Kyoung Lee

    发明人： Young Tae Kim ,  Jin San Kim ,  Ta Kyoung Lee

    IPC分类号： H02K7/08

    CPC分类号： H02K5/1675 ,  F16C17/045 ,  F16C33/08 ,  F16C2240/54 ,  F16C2240/56 ,  F16C2370/12 ,  H02K2205/03

    摘要： There is provided a spindle motor including: a sleeve including a hollow part having a shaft inserted thereinto and rotatably supporting the shaft; a thrust plate coupled to a lower portion of the shaft in an axial direction to thereby rotate together with the shaft; a cover plate coupled to a lower portion of the sleeve in the axial direction and covering the hollow part; and a step part stepped upwardly from a lower surface of the thrust plate in the axial direction so that the shaft and the thrust plate are easily coupled to each other and having surface roughness greater than that of other portions of the thrust plate.

    摘要翻译： 提供了一种主轴电动机，其包括：套筒，其包括具有插入其中并且可旋转地支撑轴的中空部分; 推力板，其沿轴向联接到所述轴的下部，从而与所述轴一起旋转; 盖板，其沿轴向联接到套筒的下部并覆盖中空部分; 以及从推力板的下表面沿轴向向上台阶的步骤部分，使得轴和推力板彼此容易地联接并且具有比推力板的其它部分的表面粗糙度更大的表面粗糙度。

    Method of manufacturing hydrodynamic bearing
    5.
    发明申请
    Method of manufacturing hydrodynamic bearing 失效
    制造流体动力轴承的方法

    公开(公告)号：US20100005662A1

    公开(公告)日：2010-01-14

    申请号：US12285879

    申请日：2008-10-15

    申请人： Young Tae Kim ,  Jin San Kim ,  Young Hwan Lim ,  II Oung Park ,  Ta Kyoung Lee

    发明人： Young Tae Kim ,  Jin San Kim ,  Young Hwan Lim ,  II Oung Park ,  Ta Kyoung Lee

    IPC分类号： B21D53/10

    CPC分类号： B21D53/10 ,  F16C17/02 ,  F16C17/026 ,  F16C33/14 ,  F16C2220/20 ,  F16C2220/66 ,  F16C2220/68 ,  F16C2223/04 ,  Y10T29/49639 ,  Y10T29/49702 ,  Y10T29/49707 ,  Y10T29/49709

    摘要： Disclosed herein is a method of manufacturing a hydrodynamic bearing in which a metal bearing made of sintered metal powder is internally subjected to chemical etching, to form hydrodynamic pressure grooves thereon, thus assuring a high-precision and reliable hydrodynamic bearing. The method includes: compressing metal powder that is a raw material of the bearing in a press unit, and sintering the compressed metal powder at a predetermined temperature, thus preparing a sintered bearing; removing foreign substances adhering to the sintered bearing through a deburring process, and pressing the sintered bearing into a desired shape; forming a hydrodynamic groove, configured to generate hydrodynamic pressure, on an internal surface of the shaped bearing using chemical etching; and conducting a post treatment of cleaning the bearing including the hydrodynamic grooves thereon and drying the bearing.

    摘要翻译： 本文公开了一种制造流体动力轴承的方法，其中由烧结金属粉末制成的金属轴承在内部进行化学蚀刻，以在其上形成流体动力学压力槽，从而确保高精度和可靠的流体动力轴承。 该方法包括：在压制单元中压制作为轴承原料的金属粉末，并在预定温度下烧结压缩的金属粉末，从而制备烧结轴承; 通过去毛刺处理去除附着在烧结轴承上的异物，将烧结后的轴承压制成所希望的形状; 使用化学蚀刻形成在所述成形轴承的内表面上产生流体动力学压力的流体动力槽; 并对其上包括流体动力槽的轴承进行清洗，并干燥轴承。

    Spindle motor
    7.
    发明授权
    Spindle motor 失效
    主轴电机

    公开(公告)号：US08454237B2

    公开(公告)日：2013-06-04

    申请号：US12874103

    申请日：2010-09-01

    申请人： Young Tae Kim

    发明人： Young Tae Kim

    IPC分类号： F16C32/06

    CPC分类号： F16C17/026 ,  F16C17/246

    摘要： The spindle motor includes a rotating shaft and a sleeve. The rotating shaft has a stepped portion in a fluid dynamic pressure shafting system. The sleeve is fitted over the circumferential outer surface of the rotating shaft. A sleeve recess is formed in the inner surface of the sleeve so that the edges of the stepped portion are spaced apart from the sleeve.

    摘要翻译： 主轴电机包括旋转轴和套筒。 旋转轴在流体动压轴系中具有台阶部分。 套筒安装在旋转轴的圆周外表面上。 套筒凹部形成在套筒的内表面中，使得阶梯部分的边缘与套筒间隔开。

    Semiconductor memory device and data read method thereof
    9.
    发明授权
    Semiconductor memory device and data read method thereof 有权
    半导体存储器件及其数据读取方法

    公开(公告)号：US06295244B1

    公开(公告)日：2001-09-25

    申请号：US09617524

    申请日：2000-07-17

    申请人： Young Tae Kim ,  Deok Joon Shin

    发明人： Young Tae Kim ,  Deok Joon Shin

    IPC分类号： G11C800

    CPC分类号： G11C7/1057 ,  G11C7/1051 ,  G11C7/106 ,  G11C7/1069 ,  G11C2207/2281

    摘要： The present invention discloses a semiconductor memory device. The device includes a plurality of memory cell array blocks; a predetermined number of main buffers for resetting a predetermined number of pairs of main data lines corresponding to a predetermined number of pairs of data items output from each of the plurality of memory cell array blocks in response to a main buffer control signal, and for generating a predetermined number of pairs of data when the data of each of the predetermined number of pairs of main data lines become complementary levels, the predetermined number of pair of data being reset after a lapse of predetermined time; a predetermined number of data output buffers for respectively receiving and buffering the predetermined number of pairs of data items generated by the predetermined number of main buffers, in response to a data output buffer control signal; and data output buffer control signal generating means for generating the data output buffer control signal, the data output buffer control signal being enabled in response to a control signal and disabled after a lapse of predetermined time from the point of time at which each of the pair of data items output from the predetermined number of main buffers reaches the desired complementary levels, thereby improving data read speed.

    摘要翻译： 本发明公开了一种半导体存储器件。 该装置包括多个存储单元阵列块; 预定数量的主缓冲器，用于响应于主缓冲器控制信号来复位与从多个存储单元阵列块中的每一个输出的预定数量的数据对对应的预定数量的主数据线对，并且用于生成 当预定数量的主数据线对中的每一个的数据成为互补电平时，预定数量的数据对，预定数量的数据对在经过预定时间之后被复位; 预定数量的数据输出缓冲器，用于响应于数据输出缓冲器控制信号分别接收和缓冲由预定数量的主缓冲器产生的预定数量的数据项对; 以及数据输出缓冲器控制信号产生装置，用于产生数据输出缓冲器控制信号，数据输出缓冲器控制信号响应于控制信号被使能，并且在从该对中的每一个的时间点起经过预定​​时间后被禁用 从预定数量的主缓冲器输出的数据项达到期望的互补电平，从而提高数据读取速度。