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21. 发明授权

US08192087B2 Microfabricated fluid dynamic bearing 有权
标题翻译：微型流体动力轴承
公开(公告)号：US08192087B2
公开(公告)日：2012-06-05
申请号：US12473243
申请日：2009-05-27
申请人： Roger L. Hipwell, Jr. , Alan L. Grantz , Dadi Setiadi , Yang Li
发明人： Roger L. Hipwell, Jr. , Alan L. Grantz , Dadi Setiadi , Yang Li
IPC分类号： F16C32/06
CPC分类号： G11B19/2036 , F16C17/105 , F16C33/107 , F16C2370/12
摘要： A fluid dynamic bearing formed by a microelectromechanical systems (MEMS) wafer-level batch-fabrication process is provided. The process results in a high performance and high reliability fluid dynamic bearing having features including higher bearing lifetime at high RPM, improved bearing stiffness, durability and thrust/restoring forces capabilities. The present invention is especially useful with small form factor disc drive memory devices having constraints in motor height, such as a 2.5 inch disc drive, requiring high performance including high rotational speed and large areal density. A sacrificial layer is utilized in the process to simultaneously form symmetrical facing surfaces of relatively rotatable components. The facing surfaces define, therebetween, a desired feature, such as a journal bearing, a thrust bearing, a fluid channel, a fluid reservoir, a capillary seal, pressure generating grooves, and other profile geometries. Such geometry control allows for design freedom in obtaining a desired bearing performance and stiffness.
摘要翻译：提供了由微机电系统（MEMS）晶圆级批量制造工艺形成的流体动力轴承。该过程产生了高性能和高可靠性的流体动力轴承，其特征包括在高转速下具有较高的轴承寿命，改进的轴承刚度，耐用性和推力/恢复力能力。本发明对于具有马达高度限制的小尺寸盘驱动器存储器件是特别有用的，例如2.5英寸盘驱动器，需要包括高旋转速度和大面密度的高性能。在该过程中利用牺牲层以同时形成相对可旋转部件的对称面对表面。相对的表面在它们之间限定期望的特征，例如轴颈轴承，推力轴承，流体通道，流体储存器，毛细管密封件，压力产生槽和其它轮廓几何形状。这种几何控制允许在获得期望的轴承性能和刚度方面的设计自由度。

22. 发明申请

US20120027326A1 FLUID DYNAMIC BEARING MOTOR INCLUDING MOLDED PLASTIC 有权
标题翻译：流体动力轴承电机，包括模压塑料
公开(公告)号：US20120027326A1
公开(公告)日：2012-02-02
申请号：US13271055
申请日：2011-10-11
申请人： Alan L. Grantz , Klaus D. Kloeppel
发明人： Alan L. Grantz , Klaus D. Kloeppel
IPC分类号： F16C32/06
CPC分类号： F16C32/0692 , F16C17/105 , F16C33/1025 , F16C33/20 , F16C33/208 , F16C2208/02 , F16C2208/48 , F16C2220/04 , F16C2370/12 , H02K7/085
摘要： A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining.
摘要翻译：描述了流体动力轴承电动机和方法，其中包括复杂形状的电动机部件的电动机部件由塑料模制。该模具可确保形状控制和尺寸控制，从而实现设计要求，消除或降低部件成本和部件加工。模具可以成型以形成各种电动机几何形状，从而消除对多个部件组装和相关组装成本的需要。在一方面，通过注射成型形成塑料整体式电动机毂。或者，塑料马达毂固定到金属套筒上。在另一方面，流体容纳结构被模制到马达部件中，与加工金属部件相比减少了部件数量。在另一方面，诸如槽的轴承结构被模制到电动机部件中，从而消除诸如电化学加工的工艺。在另一方面，塑料轮毂面向推力板，减少昂贵的套筒加工。

23. 发明授权

US08033731B2 Fluid dynamic bearing motor having molded plastic 有权
标题翻译：流体动力轴承电机具有模制塑料
公开(公告)号：US08033731B2
公开(公告)日：2011-10-11
申请号：US11975046
申请日：2007-10-17
申请人： Alan L. Grantz , Klaus D. Kloeppel
发明人： Alan L. Grantz , Klaus D. Kloeppel
IPC分类号： F16C32/06
CPC分类号： F16C32/0692 , F16C17/105 , F16C33/1025 , F16C33/20 , F16C33/208 , F16C2208/02 , F16C2208/48 , F16C2220/04 , F16C2370/12 , H02K7/085
摘要： A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining.
摘要翻译：描述了流体动力轴承电动机和方法，其中包括复杂形状的电动机部件的电动机部件由塑料模制。该模具可确保形状控制和尺寸控制，从而实现设计要求，消除或降低部件成本和部件加工。模具可以成型以形成各种电动机几何形状，从而消除对多个部件组装和相关组装成本的需要。在一方面，通过注射成型形成塑料整体式电动机毂。或者，塑料马达毂固定到金属套筒上。在另一方面，流体容纳结构被模制到马达部件中，与加工金属部件相比减少了部件数量。在另一方面，诸如槽的轴承结构被模制到电动机部件中，从而消除诸如电化学加工的工艺。在另一方面，塑料轮毂面向推力板，减少昂贵的套筒加工。

24. 发明申请

US20090103839A1 Fluid dynamic bearing motor having molded plastic 有权
标题翻译：流体动力轴承电机具有模制塑料
公开(公告)号：US20090103839A1
公开(公告)日：2009-04-23
申请号：US11975046
申请日：2007-10-17
申请人： Alan L. Grantz , Klaus D. Kloeppel
发明人： Alan L. Grantz , Klaus D. Kloeppel
IPC分类号： F16C32/06 , F16C33/64
CPC分类号： F16C32/0692 , F16C17/105 , F16C33/1025 , F16C33/20 , F16C33/208 , F16C2208/02 , F16C2208/48 , F16C2220/04 , F16C2370/12 , H02K7/085
摘要： A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or reducing component costs and component machining. The mold can be shaped to form various motor geometries, thereby eliminating the need for multiple component assembly and related assembly costs. In an aspect, a plastic integral motor hub is formed by injection molding. Alternatively, a plastic motor hub is affixed to a metal sleeve. In another aspect, fluid containment structures are molded into the motor component, reducing the number of components as compared with machined metal components. In a further aspect, bearing structures such as grooves are molded into the motor component, thereby eliminating processes such as electrochemical machining. In yet a further aspect, a plastic hub faces a thrustplate, reducing expensive sleeve machining.
摘要翻译：描述了流体动力轴承电动机和方法，其中包括复杂形状的电动机部件的电动机部件由塑料模制。该模具可确保形状控制和尺寸控制，从而实现设计要求，消除或降低部件成本和部件加工。模具可以成型以形成各种电动机几何形状，从而消除对多个部件组装和相关组装成本的需要。在一方面，通过注射成型形成塑料整体式电动机毂。或者，塑料马达毂固定到金属套筒上。在另一方面，流体容纳结构被模制到马达部件中，与加工金属部件相比减少了部件数量。在另一方面，诸如槽的轴承结构被模制到电动机部件中，从而消除诸如电化学加工的工艺。在另一方面，塑料轮毂面向推力板，减少昂贵的套筒加工。

25. 发明授权

US6149161A Grooved pumping seal 失效
标题翻译：沟槽泵送密封
公开(公告)号：US6149161A
公开(公告)日：2000-11-21
申请号：US60342
申请日：1998-04-14
申请人： Alan L. Grantz , Roger A. Addy , Robert A. Nottingham
发明人： Alan L. Grantz , Roger A. Addy , Robert A. Nottingham
IPC分类号： F16C17/10 , F16C33/10 , F16C33/74 , G11B19/20 , F16J15/40
CPC分类号： F16C33/107 , F16C17/026 , F16C17/105 , F16C33/74 , G11B19/2009 , F16C2370/12
摘要： An improved seal for a hydrodynamic bearing which aids in making the bearing less sensitive to changes in load and rotational speed, which is especially useful in hydrodynamic bearing motor in which the bearing is open at both the upper and lower ends. Additionally, a hydrodynamic bearing open at both ends in which the balance of fluid flow or pressure within the total system is maintained, and a seal usable to make a hydrodynamic bearing which is as stiff or stiffer than known standard spindle motors with hydrodynamic bearings which are supported only at one end. Also, a pumping seal useful in a hydrodynamic bearing design to maintain balanced internal fluid pressures during operation to minimize the likelihood of any lubricating fluid being lost during operation is disclosed.
摘要翻译：用于流体动力轴承的改进的密封件，其有助于使轴承对负载和转速的变化较不敏感，这尤其适用于轴承在上端和下端敞开的流体动力轴承电机。此外，在两端敞开的流体动力轴承，其中保持了整个系统内的流体流量或压力的平衡，以及可用于制造流体动力轴承的密封件，其与具有流体动力轴承的已知标准主轴马达一样刚性或刚性，仅在一端支持。此外，公开了一种用于流体动力轴承设计中的泵送密封件，以在运行期间保持平衡的内部流体压力，以最小化在运行期间任何润滑流体损失的可能性。

26. 发明申请

US20110227523A1 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：US20110227523A1
公开(公告)日：2011-09-22
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
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。

27. 发明申请

US20100303393A1 Microfabricated Fluid Dynamic Bearing 有权
标题翻译：微型流体动力轴承
公开(公告)号：US20100303393A1
公开(公告)日：2010-12-02
申请号：US12473243
申请日：2009-05-27
申请人： Roger L. Hipwell, JR. , Alan L. Grantz , Dadi Setiadi , Yang Li
发明人： Roger L. Hipwell, JR. , Alan L. Grantz , Dadi Setiadi , Yang Li
IPC分类号： F16C32/06 , B44C1/22
CPC分类号： G11B19/2036 , F16C17/105 , F16C33/107 , F16C2370/12
摘要： A fluid dynamic bearing formed by a microelectromechanical systems (MEMS) wafer-level batch-fabrication process is provided. The process results in a high performance and high reliability fluid dynamic bearing having features including higher bearing lifetime at high RPM, improved bearing stiffness, durability and thrust/restoring forces capabilities. The present invention is especially useful with small form factor disc drive memory devices having constraints in motor height, such as a 2.5 inch disc drive, requiring high performance including high rotational speed and large areal density. A sacrificial layer is utilized in the process to simultaneously form symmetrical facing surfaces of relatively rotatable components. The facing surfaces define, therebetween, a desired feature, such as a journal bearing, a thrust bearing, a fluid channel, a fluid reservoir, a capillary seal, pressure generating grooves, and other profile geometries. Such geometry control allows for design freedom in obtaining a desired bearing performance and stiffness.
摘要翻译：提供了由微机电系统（MEMS）晶圆级批量制造工艺形成的流体动力轴承。该过程产生了高性能和高可靠性的流体动力轴承，其特征包括在高转速下具有较高的轴承寿命，改进的轴承刚度，耐用性和推力/恢复力能力。本发明对于具有马达高度限制的小尺寸盘驱动器存储器件是特别有用的，例如2.5英寸盘驱动器，需要包括高旋转速度和大面密度的高性能。在该过程中利用牺牲层以同时形成相对可旋转部件的对称面对表面。相对的表面在它们之间限定期望的特征，例如轴颈轴承，推力轴承，流体通道，流体储存器，毛细管密封件，压力产生槽和其它轮廓几何形状。这种几何控制允许在获得期望的轴承性能和刚度方面的设计自由度。

28. 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。

29. 发明授权

US07422371B2 Active hybrid FDB motor 有权
标题翻译：主动混合式FDB电机
公开(公告)号：US07422371B2
公开(公告)日：2008-09-09
申请号：US11054928
申请日：2005-02-09
申请人： Michael D. Kennedy , Alan L. Grantz , Anthony J. Aiello , Paco Flores , Klaus D. Kloeppel
发明人： Michael D. Kennedy , Alan L. Grantz , Anthony J. Aiello , Paco Flores , Klaus D. Kloeppel
IPC分类号： F16C32/06
CPC分类号： G11B19/2018 , F16C17/105 , F16C33/1015 , F16C33/107 , F16C39/02 , F16C2370/12 , H02K7/086
摘要： An active fluid bearing system is provided. In one example, the active fluid bearing system includes an interface region formed between an outer surface of an inner member and an opposing inner surface of an outer member. The inner and outer members are disposed for relative rotation of the inner and outer members, and thereby form an interface region having a hydrodynamic bearing region and an active bearing region. A liquid is disposed in the interface region at the hydrodynamic bearing region, and is further disposed in the active bearing region if the inner and outer members are not relatively rotating. The bearing system is operable for evacuating at least a portion of the liquid from the active bearing region during relative rotation of the inner and outer members. The active bearing region may be a journal bearing or a thrust bearing.
摘要翻译：提供了一种主动流体轴承系统。在一个示例中，主动流体轴承系统包括形成在内部构件的外表面和外部构件的相对的内表面之间的界面区域。内部和外部构件被布置成用于内部构件和外部构件的相对旋转，从而形成具有流体动力轴承区域和主动承受区域的界面区域。如果内部和外部构件不相对旋转，则液体设置在流体动力轴承区域的界面区域中，并且进一步设置在主动轴承区域中。轴承系统可操作用于在内部和外部构件的相对旋转期间从主动轴承区域排出至少一部分液体。主动轴承区域可以是轴颈轴承或止推轴承。

30. 发明授权

US07390125B2 Single piece hub with integral upper and lower female cones 有权
标题翻译：具有整体上下雌性锥体的单件轮毂
公开(公告)号：US07390125B2
公开(公告)日：2008-06-24
申请号：US11144538
申请日：2005-06-03
申请人： Michael D. Kennedy , Roger A. Addy , Alan L. Grantz , Norbert Steven Parsoneault , Wesley R. Clark , Matt L. Shumway , Ronald T. Albo
发明人： Michael D. Kennedy , Roger A. Addy , Alan L. Grantz , Norbert Steven Parsoneault , Wesley R. Clark , Matt L. Shumway , Ronald T. Albo
IPC分类号： F16C17/10
CPC分类号： B23C3/02 , B23C2265/08 , F16C17/10 , F16C33/14 , H02K7/086 , Y10T29/49025 , Y10T29/49639 , Y10T29/49661 , Y10T29/49995
摘要： To simplify fabrication of an integral hub piece, the opening between the upper and lower female cones in this hub has sufficient width or radial dimension to allow access to both cones from one side of the hub with the cutting tool. A cutting tool is used which has a width smaller than the opening between the cones. Preferably, the tool has a width which is about equal to or smaller than an angular dimension through this opening which is defined by extending surfaces of the upper and lower female cones. If this limitation is satisfied, both cones can be created with a single machine set up operating from one side of the integrated hub.
摘要翻译：为了简化集成轮毂件的制造，该轮毂中的上和下母锥之间的开口具有足够的宽度或径向尺寸，以允许使用切削工具从毂的一侧接近两个锥体。使用具有小于锥体之间的开口的宽度的切削工具。优选地，该工具具有大约等于或小于通过该开口的角度尺寸的宽度，其由上和下雌性锥体的延伸表面限定。如果满足这个限制，则可以使用从集成集线器的一侧操作的单个机器来创建两个锥体。

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