会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Method of manufacturing a ceramics-type vacuum vessel
    • 制造陶瓷型真空容器的方法
    • US5603788A
    • 1997-02-18
    • US457013
    • 1995-06-01
    • Tetsuya AbeYoshio MurakamiHisao TakeuchiAkira YamakawaMasaya Miyake
    • Tetsuya AbeYoshio MurakamiHisao TakeuchiAkira YamakawaMasaya Miyake
    • C04B37/00F16J12/00H05H7/14B32B31/12B32B31/26
    • H05H7/14
    • A vacuum vessel is provided in which the majority of a vessel wall including an annular wall portion (1) and a plate-wall portion (2) is formed of ceramic material such as silicon nitride, for example. To bond the plural wall members together, bonding faces having a surface flatness of not more than 1 .mu.m are prepared thereon, and then a ceramic powder bonding substance with an average particle diameter of not more than 1 .mu.m is interposed between adjacent bonding faces and subjected to heating. Because the generation of gas, such as hydrogen, from the wall of the ceramic vessel is reduced, extremely high vacuum can be generated and maintained in the interior of the vacuum vessel. Also, because the wall of the vacuum vessel has a high permeability with respect to a magnetic field and an electric field, the vacuum vessel can be used as a vessel in a particle accelerator that allows the high precision control of charged particles therein by means of an electromagnetic field.
    • 提供一种真空容器,其中包括环形壁部分(1)和板壁部分(2)的容器壁的大部分由诸如氮化硅的陶瓷材料形成。 为了将多个壁构件结合在一起,在其上制备具有不大于1μm的表面平坦度的接合面,然后将平均粒径不大于1μm的陶瓷粉末粘合物置于相邻的接合面 并进行加热。 因为从陶瓷容器的壁产生气体,例如氢气,所以可以在真空容器的内部产生极高的真空度并维持真空。 此外,由于真空容器的壁相对于磁场和电场具有高磁导率,所以真空容器可以用作粒子加速器中的容器,其允许通过以下方式对带电粒子进行高精度控制: 电磁场。
    • 8. 发明授权
    • Spindle motor
    • 主轴电机
    • US06417590B1
    • 2002-07-09
    • US09786861
    • 2001-03-12
    • Osamu KomuraHisao TakeuchiMakoto OtsukiKaoru Murabe
    • Osamu KomuraHisao TakeuchiMakoto OtsukiKaoru Murabe
    • H02K708
    • F16C17/107F16C17/026F16C25/045F16C33/1015F16C39/063F16C2370/12G11B19/2009H02K7/086H02K7/09
    • There is provided a means for preventing wear caused by the contacting/sliding of a thrust hydrodynamic gas bearing surface when a spindle motor is started. A cylinder 4 of a radial hydrodynamic gas bearing that has radial hydrodynamic grooves in an outer circumferential surface thereof and a disk 3 of a thrust hydrodynamic gas bearing that has thrust hydrodynamic grooves in an upper face thereof are disposed on an upper end of an axial center of a stator core 2 having a stator 2a around which a motor coil 7 is wound, a hollow cylinder 6 whose inner surface facing the cylinder 4 of the radial hydrodynamic gas bearing is smooth and a rotor magnet 8 facing the motor coil 7 are disposed on a hub 5 acting as a rotational member, a load in a radial direction is supported by the radial hydrodynamic gas bearing, and a load in a thrust direction is supported by using the thrust hydrodynamic gas bearing together with a magnetic bearing consisting of the stator 2a and the rotor magnet 8.
    • 提供了一种用于在主轴电动机起动时防止由推力流体动力气体轴承表面的接触/滑动引起的磨损的装置。 径向流体动力气体轴承的圆柱体4设置在轴向中心的上端,径向流体动力气体轴承在其外圆周表面中具有径向流体动力槽,并且具有在其上表面具有推力流体动力槽的推力流体动力气体轴承的盘3 定子铁芯2具有卷绕电动机线圈7的定子2a,与径向流体动力气体轴承的气缸4相对的内表面平滑的中空圆筒6和面向电机线圈7的转子磁体8设置在 用作旋转构件的轮毂5,径向载荷由径向流体动力气体轴承支撑,并且通过使用推力流体动力气体轴承以及由定子2a组成的磁性轴承来支撑推力方向的负载 和转子磁体8。
    • 9. 发明授权
    • Hydrodynamic gas bearing and manufacturing method thereof
    • 流体动力气体轴承及其制造方法
    • US06256885B1
    • 2001-07-10
    • US09575876
    • 2000-05-22
    • Hisao TakeuchiKaoru Murabe
    • Hisao TakeuchiKaoru Murabe
    • B21D5310
    • F16C17/028F16C33/101Y10T29/49639Y10T82/10
    • A hydrodynamic gas bearing structure which can effectively prevent the half speed whirl phenomenon and prevent wear at the time of activation or stopping of rotation is implemented in a simple manner. The hydrodynamic gas bearing has a shaft body having an outer periphery, and a cylindrical bearing body opposing to the shaft body with a space maintained in the radial direction. The shaft body has a hollow portion extending in the axial direction. In a cross section vertical to the axial line of the shaft body, the hollow portion has a not-complete-round, symmetrical shape with respect to a line passing through the center of the cross section, for example, an approximately regular triangular shape. As a first distance from the center of the cross section to an outline corresponding to an inner periphery of the hollow portion changes along the peripheral direction of shaft body, the second distance from the center of the cross section to an outline corresponding to the outer periphery of shaft body changes along the peripheral direction of shaft body.
    • 能够以简单的方式实现能够有效地防止半速旋转现象并防止激活或停止旋转时的磨损的流体动力气体轴承结构。 流体动力气体轴承具有外周的轴体和与轴体相对的圆筒状的轴承体,其沿径向保持空间。 轴体具有沿轴向延伸的中空部。 在垂直于轴体的轴线的横截面中,中空部分相对于穿过横截面中心的线例如是大致规则的三角形形状具有不完全圆形的对称形状。 由于从中心部的中心到与中空部的内周对应的轮廓的第一距离沿着轴体的周向发生变化,所以从横截面的中心到对应于外周的轮廓的第二距离 轴体沿轴体的周向发生变化。