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    Lubricated limiter for fluid dynamic bearing motor
    4.
    发明授权
    Lubricated limiter for fluid dynamic bearing motor 有权
    流体动力轴承电机润滑限位器

    公开(公告)号：US07626783B2

    公开(公告)日：2009-12-01

    申请号：US12119410

    申请日：2008-05-12

    申请人： Jeffry A. LeBlanc ,  Robert A. Nottingham ,  Troy M. Herndon ,  Norbert S. Parsoneault ,  Lynn B. Le

    发明人： Jeffry A. LeBlanc ,  Robert A. Nottingham ,  Troy M. Herndon ,  Norbert S. Parsoneault ,  Lynn B. Le

    IPC分类号： G11B17/02

    CPC分类号： G11B19/2018 ,  F16C17/045 ,  F16C17/107 ,  F16C25/045 ,  F16C2370/12

    摘要： In one example, a FDB motor having a top-cover attached, EM biased bearing system is provided. The motor includes a shaft and rotor disposed for relative rotation, and an axial limiter for restricting axial movement of the rotor with respect to the shaft, wherein the axial limiter is wet or lubricated during contact. The limiter is spatially fixed with respect to one of the shaft or the rotor and disposed with an axial end surface opposing a surface portion spatially fixed with respect to the other of the shaft or the rotor to form a gap therebetween. The gap may be filled with a fluid such as bearing lubricant, thereby providing a lubricated or wet contact surface to restrict axial movement of the shaft and rotor. Additionally, one or both surfaces may include a groove or slot to provide circulation of fluid through the gap.

    摘要翻译： 在一个示例中，提供具有顶盖附接的EM偏置轴承系统的FDB电动机。 马达包括一个设置用于相对旋转的轴和转子，以及用于限制转子相对于轴的轴向运动的轴向限制器，其中轴向限制器在接触期间被湿润或润滑。 限制器相对于轴或转子中的一个空间地固定，并且设置有与相对于轴或转子中的另一个空间固定的表面部分相对的轴向端表面，以在它们之间形成间隙。 间隙可以填充有诸如轴承润滑剂的流体，从而提供润滑或湿的接触表面以限制轴和转子的轴向运动。 另外，一个或两个表面可以包括槽或槽，以提供流体通过间隙的循环。

    LUBRICATED LIMITER FOR FLUID DYNAMIC BEARING MOTOR
    5.
    发明申请
    LUBRICATED LIMITER FOR FLUID DYNAMIC BEARING MOTOR 有权
    流体动力轴承电机润滑限值

    公开(公告)号：US20080273263A1

    公开(公告)日：2008-11-06

    申请号：US12119410

    申请日：2008-05-12

    申请人： Jeffry A. LEBLANC ,  Robert A. Nottingham ,  Troy M. Herndon ,  Norbert S. Parsoneault ,  Lynn B. Le

    发明人： Jeffry A. LEBLANC ,  Robert A. Nottingham ,  Troy M. Herndon ,  Norbert S. Parsoneault ,  Lynn B. Le

    IPC分类号： G11B17/02

    CPC分类号： G11B19/2018 ,  F16C17/045 ,  F16C17/107 ,  F16C25/045 ,  F16C2370/12

    摘要： In one example, a FDB motor having a top-cover attached, EM biased bearing system is provided. The motor includes a shaft and rotor disposed for relative rotation, and an axial limiter for restricting axial movement of the rotor with respect to the shaft, wherein the axial limiter is wet or lubricated during contact. The limiter is spatially fixed with respect to one of the shaft or the rotor and disposed with an axial end surface opposing a surface portion spatially fixed with respect to the other of the shaft or the rotor to form a gap therebetween. The gap may be filled with a fluid such as bearing lubricant, thereby providing a lubricated or wet contact surface to restrict axial movement of the shaft and rotor. Additionally, one or both surfaces may include a groove or slot to provide circulation of fluid through the gap.

    摘要翻译： 在一个示例中，提供具有顶盖附接的EM偏置轴承系统的FDB电动机。 马达包括一个设置用于相对旋转的轴和转子，以及用于限制转子相对于轴的轴向运动的轴向限制器，其中轴向限制器在接触期间被湿润或润滑。 限制器相对于轴或转子中的一个空间地固定，并且设置有与相对于轴或转子中的另一个空间固定的表面部分相对的轴向端表面，以在它们之间形成间隙。 间隙可以填充有诸如轴承润滑剂的流体，从而提供润滑或湿的接触表面以限制轴和转子的轴向运动。 另外，一个或两个表面可以包括槽或槽，以提供流体通过间隙的循环。

    High-speed centrifugal seal for a spindle motor
    6.
    发明授权
    High-speed centrifugal seal for a spindle motor 有权
    用于主轴电机的高速离心密封

    公开(公告)号：US07224552B2

    公开(公告)日：2007-05-29

    申请号：US10852983

    申请日：2004-05-24

    申请人： Troy M. Herndon ,  Jeffry A. LeBlanc ,  Robert A. Nottingham

    发明人： Troy M. Herndon ,  Jeffry A. LeBlanc ,  Robert A. Nottingham

    IPC分类号： G11B17/08 ,  H02K5/16 ,  F16C32/06

    CPC分类号： F16C33/1085 ,  F16C17/026 ,  F16C17/045 ,  F16C33/107 ,  F16C33/74 ,  F16C2370/12 ,  G11B19/2009

    摘要： A robust spindle motor is provided having added shock resistance for fluid containment. In an aspect, a high-speed centrifugal capillary seal contains a fluid reservoir extending between similarly rotatable components. Fluid is recirculated through the motor and substantially around a counterplate. Proper axial positioning of motor components and stiffness is maintained in motors supporting heavy loads such as a disk drive memory system having a weighty disc pack. In an aspect, two separate thrust surfaces provide oppositely directed axial forces acting on motor components. In an aspect, a single thrust plate that is comparatively small is utilized, reducing power consumption. Also, a thrust bearing situated inboard of a capillary seal forms a comparatively small diameter thrust plate gap. The comparatively small diameter thrust plate gap increases efficiency and characteristics including surface flatness, run out and perpendicularity are improved.

    摘要翻译： 提供了一种坚固的主轴电机，具有增加的防止流体容纳的冲击。 在一方面，高速离心毛细管密封件包含在类似可旋转部件之间延伸的流体储存器。 流体通过马达再循环并且基本上围绕着对面板。 电动机部件的正确轴向定位和刚度保持在支撑重负载的电动机中，例如具有重量盘组件的磁盘驱动器存储器系统。 在一个方面，两个单独的推力表面提供作用在马达部件上的相反方向的轴向力。 在一方面，使用相对较小的单个推力板，从而降低功率消耗。 此外，位于毛细管密封件内侧的推力轴承形成相对较小直径的推力板间隙。 相对较小直径的推力板间隙增加了效率和特性，包括表面平整度，磨损和垂直度均得到改善。

    Stator ring mass/stiffener for improved acoustics
    7.
    发明授权
    Stator ring mass/stiffener for improved acoustics 失效
    定子环质量/加强件，用于改善声学效果

    公开(公告)号：US06608734B1

    公开(公告)日：2003-08-19

    申请号：US09863551

    申请日：2001-05-23

    申请人： Troy M. Herndon ,  Jeffry A. LeBlanc ,  Robert A. Nottingham

    发明人： Troy M. Herndon ,  Jeffry A. LeBlanc ,  Robert A. Nottingham

    IPC分类号： G11B1702

    CPC分类号： G11B19/2009 ,  H02K1/146

    摘要： A disc drive spindle motor having improved acoustic properties for use in a disc drive data storage system is provided. In one embodiment, the disc drive spindle motor a base, a stationary member, a rotor and a stator. A bearing interconnects the rotor with the stationary member and allows the rotor to rotate about the stationary member. The stator includes a plurality of teeth extending from a back iron. At least one stiffening member is coupled to the stator, joining the teeth at an end opposite the back iron. The stiffening member substantially reduces vibrations in the stator thereby reducing acoustic noise generated by the motor.

    摘要翻译： 提供了一种用于盘驱动器数据存储系统的具有改进的声学特性的盘驱动主轴马达。 在一个实施例中，盘驱动主轴电动机是基座，固定构件，转子和定子。 轴承将转子与固定构件互连，并允许转子围绕固定构件旋转。 定子包括从后铁延伸的多个齿。 至少一个加强构件联接到定子，在与后铁相对的端部处接合齿。 加强构件基本上减小了定子的振动，从而减少了由马达产生的声音噪声。

    Thermal compensation without creep in a hydrodynamic bearing
    8.
    发明授权
    Thermal compensation without creep in a hydrodynamic bearing 有权

    公开(公告)号：US06575634B2

    公开(公告)日：2003-06-10

    申请号：US09896445

    申请日：2001-06-28

    申请人： Robert A. Nottingham

    发明人： Robert A. Nottingham

    IPC分类号： F16C3206

    CPC分类号： F16C17/105 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2009 ,  Y10S384/905

    摘要： A hydrodynamic bearing is provided comprising a shaft having a pair of spaced apart conical bearings supporting a surrounding sleeve for rotations. The sleeve comprises a single piece rather than the two-piece design separated by a rubber expansion joint of the prior art. Instead upper and lower slots are cut into the sleeve, and the rings are pressed or otherwise tightly fitted into each slot. The single piece sleeve which also incorporates the bearing seats for the conical bearings on the shaft, is made of aluminum, while each ring is made of steel (as is the shaft and bearing cones). As the temperature rises at which the hydrodynamic bearing is operated, the sleeve expands axially putting the bearing seat closer to the cone, effectively compensating for the thinning of the fluid which supports the bearing seat and sleeve for rotation relative to the cone. Meanwhile, the steel ring, being of the same material as the shaft, prevents the aluminum sleeve from expanding radially away from the cone. Further, the axial length of the interface between the sleeve and ring can be adjusted to control the amount of thermal compensation into any system, allowing for very accurate control of the thermal compensations scheme.