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1. 发明授权

US08618706B2 Fluid pumping capillary seal for a fluid dynamic bearing 有权
标题翻译：用于流体动力轴承的流体泵送毛细管密封
公开(公告)号：US08618706B2
公开(公告)日：2013-12-31
申请号：US12328710
申请日：2008-12-04
申请人： Alan L. Grantz , Lynn B. Le , Klaus Kloeppel
发明人： Alan L. Grantz , Lynn B. Le , Klaus Kloeppel
IPC分类号： H02K5/124
CPC分类号： F16C32/064 , F16C33/745 , F16C41/008 , F16C2370/12
摘要： A motor includes a rotatable component rotatable relative to a stationary component, a fluid operable to flow between the rotatable and stationary component, and a capillary sealing component. The capillary sealing component provides a capillary seal and includes at least one tapered slot configured to pump the fluid between the rotatable and stationary components.
摘要翻译：马达包括可相对于静止部件旋转的可旋转部件，可操作以在可旋转和静止部件之间流动的流体和毛细管密封部件。毛细管密封部件提供毛细管密封件，并且包括至少一个锥形狭槽，其构造成在可旋转部件和固定部件之间泵送流体。

2. 发明申请

US20100142869A1 Fluid Pumping Capillary Seal For A Fluid Dynamic Bearing 有权
标题翻译：流体动力轴承的流体泵送毛细管密封
公开(公告)号：US20100142869A1
公开(公告)日：2010-06-10
申请号：US12328710
申请日：2008-12-04
申请人： Alan L. Grantz , Lynn B. Le , Klaus Kloeppel
发明人： Alan L. Grantz , Lynn B. Le , Klaus Kloeppel
IPC分类号： F16C32/06
CPC分类号： F16C32/064 , F16C33/745 , F16C41/008 , F16C2370/12
摘要： An apparatus and method are provided for a robust and shock resistant fluid dynamic bearing. A fluid sealing system with fluid pumping and capillary features provides increased reliability and performance for small form factor disc drive memory systems. Concerns of motor jog are addressed, jog being the rapid and repeated opening and closing of spaces between relatively rotatable components that can dispel oil from, or draw air into, these spaces. The fluid pumping capillary sealing system includes a fluid pumping groove with a rib portion and a slot portion for pumping fluid. The fluid pumping capillary sealing system also includes a capillary seal. In an aspect, a sweeping rib sweeps fluid toward the bearing. A truncated rib is situated adjacent to the sweeping rib, the truncated rib extending a shorter radial distance as compared to the sweeping rib and forming a plenum region.
摘要翻译：提供了一种用于坚固耐冲击的流体动力轴承的装置和方法。具有流体泵送和毛细管特性的流体密封系统为小尺寸盘驱动器存储器系统提供了更高的可靠性和性能。解决了电机点动的问题，慢跑是能够将油从其中排出或将空气吸入这些空间的相对可旋转部件之间的空间的快速且重复的打开和关闭。流体泵送毛细管密封系统包括具有肋部分的流体泵送槽和用于泵送流体的槽部分。流体泵送毛细管密封系统还包括毛细管密封。在一方面，清扫肋将流体朝向轴承扫过。截头肋位于扫掠肋附近，与扫掠肋相比，截形肋延伸较短的径向距离并形成增压区。

3. 发明授权

US09644675B2 Folded fluid channel for a fluid dynamic bearing 有权
公开(公告)号：US09644675B2
公开(公告)日：2017-05-09
申请号：US12117619
申请日：2008-05-08
申请人： Lynn B. Le , Alan L. Grantz
发明人： Lynn B. Le , Alan L. Grantz
IPC分类号： F16C32/06 , F16C33/10 , F16C41/00 , F16C17/10
CPC分类号： F16C32/0633 , F16C17/105 , F16C17/107 , F16C33/107 , F16C33/1085 , F16C41/008 , F16C2370/12
摘要： A system and method are provided for sealing a fluid dynamic bearing motor. A first and a second folded fluid channel are shaped for maximizing bearing axial span and establishing angular stiffness, to resist gyroscopic rocking of the facing bearing surfaces. The first folded fluid channel is limited to occupying at least a portion of the same axial space as the bearing. A first and a second fluid sealing system are connected to opposite axial ends of the bearing. The first fluid sealing system forms an active pumping seal to pump fluid during motor rotation. In an aspect, a top cover attached shaft, and a single thrust surface are employed, allowing for a rigid motor structure and power reduction in applications including high rotational speed disc drives. Also, by employing a rigid shaft design, significantly lower amplitude radial vibration responses are exhibited at higher frequencies than prior art motor designs.

4. 发明授权

US06679501B1 Motor with stationary shaft and high speed capillary seal 有权
标题翻译：电机带固定轴和高速毛细管密封
公开(公告)号：US06679501B1
公开(公告)日：2004-01-20
申请号：US09489450
申请日：2000-01-21
申请人： Robert M. Pelstring , Raquib U. Khan , Klaus Kloeppel , Alan L. Grantz , Norbert S. Parsoneault , Marten F. Byl , Hans Leuthold
发明人： Robert M. Pelstring , Raquib U. Khan , Klaus Kloeppel , Alan L. Grantz , Norbert S. Parsoneault , Marten F. Byl , Hans Leuthold
IPC分类号： F16J1540
CPC分类号： G11B33/1473 , F16C33/102 , F16C33/745 , F16C2370/12 , F16J15/40 , F16J15/43 , G11B19/2018
摘要： A motor or bearing which incorporates the use of a capillary seal adjacent a bearing race between the shaft and surrounding hub or housing. The seal may take a plurality of forms, including a straight capillary seal; a seal formed between the housing and a seal ball having different radius of curvatures (preferably with the housing internal surface having a larger radius); or a centrifugal capillary seal comprising a male cone supported on a fixed or rotating shaft, and a female cone supported on a housing. The use of a capillary seal rather than ferrofluid seal should also provide a reduction in resistance across the seal gap compared to a ferrofluid seal.
摘要翻译：一种马达或轴承，其包括在轴和周围的毂或壳体之间的轴承座附近使用毛细管密封。密封可以采取多种形式，包括直的毛细管密封; 形成在壳体和具有不同曲率半径的密封球之间的密封件（优选地，壳体内表面具有较大的半径）; 或包括支撑在固定或旋转轴上的阳锥体和支撑在壳体上的阴锥体的离心毛细管密封件。使用毛细管密封件而不是铁磁流体密封件还应该提供与密封间隙相比较的减小的电阻，铁磁流体密封。

5. 发明申请

US20090279818A1 FOLDED FLUID CHANNEL FOR A FLUID DYNAMIC BEARING MOTOR 有权
标题翻译：用于流体动力轴承电机的折叠流体通道
公开(公告)号：US20090279818A1
公开(公告)日：2009-11-12
申请号：US12117619
申请日：2008-05-08
申请人： Lynn B. Le , Alan L. Grantz
发明人： Lynn B. Le , Alan L. Grantz
IPC分类号： F16C32/06 , F16N25/04
CPC分类号： F16C32/0633 , F16C17/105 , F16C17/107 , F16C33/107 , F16C33/1085 , F16C41/008 , F16C2370/12
摘要： A system and method are provided for sealing a fluid dynamic bearing motor. A first and a second folded fluid channel are shaped for maximizing bearing axial span and establishing angular stiffness, to resist gyroscopic rocking of the facing bearing surfaces. The first folded fluid channel is limited to occupying at least a portion of the same axial space as the bearing. A first and a second fluid sealing system are connected to opposite axial ends of the bearing. The first fluid sealing system forms an active pumping seal to pump fluid during motor rotation. In an aspect, a top cover attached shaft, and a single thrust surface are employed, allowing for a rigid motor structure and power reduction in applications including high rotational speed disc drives. Also, by employing a rigid shaft design, significantly lower amplitude radial vibration responses are exhibited at higher frequencies than prior art motor designs.
摘要翻译：提供一种用于密封流体动力轴承马达的系统和方法。第一和第二折叠流体通道被成形为最大化轴承轴向跨度并且建立角度刚度，以抵抗面对轴承表面的陀螺摇摆。第一折叠流体通道被限制为占据与轴承相同轴向空间的至少一部分。第一和第二流体密封系统连接到轴承的相对的轴向端部。第一流体密封系统在电机旋转期间形成主动泵送密封件以泵送流体。在一方面，采用顶盖连接轴和单个推力表面，允许在包括高转速盘驱动器的应用中具有刚性的电机结构和功率降低。此外，通过采用刚性轴设计，在比现有技术的电动机设计更高的频率下显示出显着较低振幅的径向振动响应。

6. 发明授权

US5938343A Oil filling seal for hydrodynamic motor utilizing a movable sealing element 失效
标题翻译：使用可移动密封元件的流体动力马达的填油密封
公开(公告)号：US5938343A
公开(公告)日：1999-08-17
申请号：US963565
申请日：1997-11-03
申请人： Alan L. Grantz , Klaus Kloeppel , John Dunfield
发明人： Alan L. Grantz , Klaus Kloeppel , John Dunfield
IPC分类号： F16C33/10 , F16C33/74 , H02K5/167 , F16C33/72 , F16C32/06
CPC分类号： F16C33/107 , F16C17/026 , F16C33/74 , H02K5/1675
摘要： A rotating shaft motor or cartridge incorporates an o-ring which surrounds the rotating shaft and is borne on a carrier. As supported on the carrier, the o-ring does not normally block the bearing passages which would prevent the smooth distribution of oil throughout the motor. However, the carrier and o-ring combination are designed to allow the o-ring to be forced into an opening between the shaft and sleeve for completely sealing the remaining portion of the bearing during filling. The rotating shaft includes a central reservoir, having one or more grooves or passages communicating with the hydrodynamic bearing surfaces and ending in a septum or rubber plug which is inserted in an opening in the shaft.
摘要翻译：旋转轴电动机或筒包括围绕旋转轴的O形环并且承载在载体上。由于支撑在载体上，所以O形圈通常不会阻塞轴承通道，从而防止油在整个电机中的平滑分布。然而，载体和O形环组合被设计成允许O形环被迫进入轴和套筒之间的开口中，以在填充期间完全密封轴承的剩余部分。旋转轴包括中央储存器，其具有与流体动力轴承表面连通的一个或多个凹槽或通道，并且终止于插入轴中的开口中的隔膜或橡胶塞。

7. 发明申请

US20080317392A1 Air purging for a fluid dynamic bearing 有权
标题翻译：空气吹扫用于流体动力轴承
公开(公告)号：US20080317392A1
公开(公告)日：2008-12-25
申请号：US11821900
申请日：2007-06-25
申请人： Anthony J. Aiello , Christopher M. Woldemar , Norbert S. Parsoneault , Alan L. Grantz
发明人： Anthony J. Aiello , Christopher M. Woldemar , Norbert S. Parsoneault , Alan L. Grantz
IPC分类号： F16C32/06
CPC分类号： F16C33/103 , F16C17/107 , F16C33/107 , F16C33/745 , F16C2370/12 , Y10T29/49639 , Y10T29/49826
摘要： A robust spindle motor is provided having improved shock resistance for fluid containment, as well as enhanced air purging characteristics. In an aspect, axial displacement of relatively rotating components is restricted by utilizing a limiter situated adjacent to a limiter bushing forming an axial limiter gap therebetween. A fluid channel, at least partially diverging, extends from a hydrodynamic bearing to the axial limiter gap, and continues to a region beyond the axial limiter gap. In an aspect, an axially diverging slot is situated adjacent to the axial limiter gap. Power is reduced by reducing viscous drag between relatively rotating components, hydrodynamic bearing length is increased, and higher stiffness of the hydrodynamic bearing is provided. Fluid volume may be increased, thereby offsetting fluid evaporation losses and allowing for the use of lower viscosity lubricants.
摘要翻译：提供了一种坚固的主轴电动机，其具有改进的防止流体容纳的抗冲击性，以及增强的空气净化特性。在一个方面，相对旋转部件的轴向位移通过利用与限制器衬套相邻的限制器来限制，该限制器在其间形成轴向限制器间隙。至少部分发散的流体通道从流体动力轴承延伸到轴向限制器间隙，并且继续到超出轴向限制器间隙的区域。在一个方面，轴向发散的狭槽位于轴向限制器间隙附近。通过减少相对旋转部件之间的粘滞阻力来降低动力，提高流体动力轴承长度，提供更高刚度的流体动力轴承。流体体积可能增加，从而抵消流体蒸发损失并允许使用较低粘度的润滑剂。

8. 发明授权

US07241051B2 Radial capillary seal for fluid dynamic bearing motors 有权
标题翻译：用于流体动力轴承电机的径向毛细管密封
公开(公告)号：US07241051B2
公开(公告)日：2007-07-10
申请号：US11151878
申请日：2005-06-13
申请人： Alan L. Grantz , Raquib U. Khan , Norbert Steven Parsoneault
发明人： Alan L. Grantz , Raquib U. Khan , Norbert Steven Parsoneault
IPC分类号： F16C17/10
CPC分类号： F16C17/105 , F16C17/107 , F16C33/745 , F16C2370/12 , G11B19/2009
摘要： A seal with a primary axis lying in the radial direction so that the fluid bearing is primarily extending in the axial direction between the rotating shaft and surrounding sleeve is disclosed. The capillary seal is positioned with an opening adjacent an end of the fluid bearing gap, and comprises two walls which diverge as they extend radially away from the fluid bearing so that the fluid held in the radial capillary seal is maintained adjacent an end of the gap, while the size of the reservoir defined by the diverging walls provides a large reservoir volume. The seal uses an additional capillary defined by a narrow annulus between the rotating shaft and a seal wall end. The narrow annulus establishes very high shock resistance preventing fluid loss past the outer axial wall of the radially capillary seal, and defines a small surface area from which evaporation can occur.
摘要翻译：公开了一种具有主轴线位于径向方向上的密封件，使得流体轴承主要在轴向方向上在旋转轴和周围套筒之间延伸。毛细管密封件定位成具有邻近流体轴承间隙的端部的开口，并且包括两个壁，当它们从流体轴承径向延伸时分开，使得保持在径向毛细管密封件中的流体保持在间隙的端部附近而由发散壁限定的储存器的尺寸提供了大的储存器容积。密封件使用由旋转轴和密封壁端之间的窄环形物限定的附加毛细管。狭窄的环形区域具有非常高的抗冲击性，可以防止流体通过径向毛细管密封件的外部轴向壁的流体损失，并且限定了可能发生蒸发的小的表面积。

9. 发明授权

US5559651A Magnetic disc storage system with hydrodynamic bearing 失效
公开(公告)号：US5559651A
公开(公告)日：1996-09-24
申请号：US420740
申请日：1995-04-12
申请人： Alan L. Grantz , Wesley R. Clark
发明人： Alan L. Grantz , Wesley R. Clark
IPC分类号： F16C17/10 , G11B17/022 , G11B19/20 , G11B25/04 , G11B33/08 , G11B17/02
CPC分类号： G11B33/08 , G11B17/022 , G11B25/043
摘要： A magnetic disc storage system includes a base and a rotating magnetic disc having an axis of rotation. A transducing head which reads and writes information is positioned proximate the disc. The disc rotates on a rotating member relative to a fixed member which is attached to the base. In one embodiment, the hydrodynamic bearing has a shape which forms a portion of a sphere.

10. 发明授权

US08575880B2 Direct current motor with independently driven and switchable stators 有权
标题翻译：具有独立驱动和可切换定子的直流电机
公开(公告)号：US08575880B2
公开(公告)日：2013-11-05
申请号：US13045482
申请日：2011-03-10
申请人： Alan L. Grantz
发明人： Alan L. Grantz
IPC分类号： H02P6/08 , H02P25/02
CPC分类号： H02P25/021 , H02P6/14 , H02P25/024 , H02P25/188
摘要： An apparatus and method are provided for adjusting torque and speed of a motor, while remaining within the voltage limit of a power supply. The invention provides a brushless direct current motor with independently driven and switchable stators. In an aspect, each stator and the rotor is structured to function as an independent motor separate from another stator and the rotor. A first power electronics directs energy to a first stator, and a second power electronics directs energy to a second stator. A rotor rotates relative to the stators. In an aspect, a commutation electronics determines electrical position of the rotor relative to the stators, and synchronizes current pulses directed to a sequentially selected phase of the stators, to generate a rotating magnetic field that communicates with the rotor. A controller sets the connection of the first power electronics in series or in parallel with the second power electronics.
摘要翻译：提供一种用于在电源的电压限制内保持电动机的转矩和速度的装置和方法。本发明提供一种具有独立驱动和可切换定子的无刷直流电动机。在一个方面，每个定子和转子构造成用作与另一个定子和转子分离的独立电机。第一电力电子装置将能量引导到第一定子，而第二电力电子装置将能量引导到第二定子。转子相对于定子旋转。在一个方面，换向电子装置确定转子相对于定子的电位置，并且使与定子的顺序选择的相位相对应的电流脉冲同步，以产生与转子连通的旋转磁场。控制器将第一电力电子设备与第二电力电子设备串联或并联连接。

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