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1. 发明申请

US20050013041A1 Apparatus & method for forming a rotatable ferrofluidic seal between a shaft and a hub 审中-公开
标题翻译：用于在轴和轮毂之间形成可旋转铁磁流体密封的装置和方法
公开(公告)号：US20050013041A1
公开(公告)日：2005-01-20
申请号：US10920582
申请日：2004-08-17
申请人： Donald Macleod , Robert Pelstring , Marten Byl , Jeffry LeBlanc , Tan Pham , Robert Nottingham , Michael Whittome
发明人： Donald Macleod , Robert Pelstring , Marten Byl , Jeffry LeBlanc , Tan Pham , Robert Nottingham , Michael Whittome
IPC分类号： F16J15/43 , G11B17/028 , G11B19/20 , G11B17/02 , F16C33/74 , H02K5/16 , H02K7/08
CPC分类号： F16J15/43 , F16C19/06 , F16C2370/12 , G11B17/0282 , G11B19/2009
摘要： An apparatus and method are provided for sealing an outer surface 170 of a shaft 175 to an inner surface 165 of a hub 160. The seal includes a magnet 155, with top and bottom pole pieces 260, 265, and a ferrofluid 270 magnetically held in a gap 275 between the pole pieces 260, 265, and the hub 160 or the shaft 175. The top pole piece 260 has a cross-section that is L-shaped, with a horizontal portion 260a parallel to the magnet 155 and a shorter vertical portion 260b facing the shaft 175. In one version, the vertical portion 260b or the portion of the shaft 175 facing it is contoured to provide a flux gradient that axially concentrates the ferrofluid 270 in the gap 275. In another aspect, a catcher 335 is provided to reduce loss of ferrofluid 270 when the ferrofluidic seal 185 used to form an outside seal. In yet another aspect, a stationary ferrofluidic seal 345 is provided for sealing a stationary shaft 350 to a rotating hub 355.
摘要翻译：提供了一种用于将轴175的外表面170密封到毂160的内表面165的装置和方法。密封件包括磁体155，其具有顶部和底部极片260,265以及磁性保持在其中的铁磁流体270 极片260,265和毂160或轴175之间的间隙275.顶极片260具有L形的横截面，水平部分260a平行于磁体155，垂直线部分260b面向轴175.在一种形式中，垂直部分260b或轴175的面向其的部分的轮廓被设计成提供将铁磁流体270轴向集中在间隙275中的磁通梯度。在另一方面，捕手335是用于在用于形成外部密封件的铁磁流体密封件185时减少铁磁流体270的损失。在另一方面，提供固定式铁磁流体密封件345，用于将固定轴350密封到旋转毂355。

2. 发明申请

US20050218735A1 Systems and methods for shielding fluid reservoirs of FDB motors 有权
标题翻译：用于屏蔽FDB电机流体储存器的系统和方法
公开(公告)号：US20050218735A1
公开(公告)日：2005-10-06
申请号：US11097050
申请日：2005-04-01
申请人： Troy Herndon , James Lee , Jeffry Leblanc , Robert Nottingham , Norbert Parsoneault , Thaveesinn Vasavakul , James Bowdoin , Christopher Woldemar , Jerry Weingord
发明人： Troy Herndon , James Lee , Jeffry Leblanc , Robert Nottingham , Norbert Parsoneault , Thaveesinn Vasavakul , James Bowdoin , Christopher Woldemar , Jerry Weingord
IPC分类号： F16C33/10 , H02K5/16
CPC分类号： F16C33/103 , F16C17/107 , F16C33/745 , F16C41/008 , F16C2370/12 , H02K5/1677 , Y10T29/49009 , Y10T29/49639 , Y10T29/49702 , Y10T29/49703 , Y10T29/53443
摘要： In one example, an FDB motor having a shield member is provided. In one example, the method includes disposing a first member and a second member for relative rotation about an axis of rotation. An annular shield member is attached to the first member, the shield member disposed adjacent a fluid reservoir for containing a bearing fluid. The reservoir is filled through an aperture (e.g., a fill hole) in the shield member. Thereafter, the aperture is at least partially sealed. The aperture may be hermetically sealed via one or more laser pulses. In other examples, a two piece shield is provided for shielding a reservoir without a fill hole.
摘要翻译：在一个示例中，提供具有屏蔽构件的FDB电动机。在一个示例中，该方法包括布置围绕旋转轴线相对旋转的第一构件和第二构件。环形屏蔽构件附接到第一构件，屏蔽构件邻近流体储存器设置以容纳轴承流体。储存器通过屏蔽构件中的孔（例如，填充孔）填充。此后，孔径至少部分地被密封。孔可以通过一个或多个激光脉冲气密密封。在其他示例中，提供了一个用于屏蔽储存器而没有填充孔的双件式屏蔽件。

3. 发明申请

US20070145837A1 Motor assembly with multifunctional components 有权
标题翻译：电机组件带多功能部件
公开(公告)号：US20070145837A1
公开(公告)日：2007-06-28
申请号：US11317561
申请日：2005-12-22
申请人： Troy Herndon , Jeffry LeBlanc , Robert Nottingham , Norbert Steven Parsoneault , Paco Flores
发明人： Troy Herndon , Jeffry LeBlanc , Robert Nottingham , Norbert Steven Parsoneault , Paco Flores
IPC分类号： H02K7/00 , H02K5/16 , G11B17/02
CPC分类号： F16C33/745 , F16C2370/12 , G11B17/028 , G11B19/2018 , H02K7/086
摘要： Multifunctional components enable the construction of economical motor assemblies. A first embodiment of the present invention provides a hub, cup, spindle, and base assembly for a motor assembly having at least one journal bearing, at least one thrust bearing, and at least one fluid seal. A second embodiment of the present invention provides a hub, spindle, and base with integrated cup assembly for a disc drive bearing having at least one journal bearing, at least one thrust bearing, and at least one fluid seal. In a third embodiment, a hub is rotatably assembled with a spindle coupled to a thrust bearing, prior to assembly with a base. In further embodiments, motor assemblies comprise the above embodiments combined with stator and rotor assemblies.
摘要翻译：多功能部件能够构建经济型马达组件。本发明的第一实施例提供一种用于马达组件的轮毂，杯，主轴和底座组件，其具有至少一个轴颈轴承，至少一个止推轴承和至少一个流体密封件。本发明的第二实施例提供一种具有集成杯组件的轮毂，主轴和底座，用于盘驱动轴承，其具有至少一个轴颈轴承，至少一个止推轴承和至少一个流体密封件。在第三实施例中，在与基座组装之前，轮毂可旋转地组装有联接到推力轴承的心轴。在另外的实施例中，马达组件包括与定子和转子组件组合的上述实施例。

4. 发明申请

US20050015791A1 High-speed centrifugal seal for a spindle motor 有权
标题翻译：用于主轴电机的高速离心密封
公开(公告)号：US20050015791A1
公开(公告)日：2005-01-20
申请号：US10852983
申请日：2004-05-24
申请人： Troy Herndon , Jeffry LeBlanc , Robert Nottingham
发明人： Troy Herndon , Jeffry LeBlanc , Robert Nottingham
IPC分类号： F16C33/10 , F16C33/74 , G11B17/02 , G11B19/20
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。

5. 发明申请

US20050207060A1 Lubricated limiter for fluid dynamic bearing motor 有权
标题翻译：流体动力轴承电机润滑限位器
公开(公告)号：US20050207060A1
公开(公告)日：2005-09-22
申请号：US11084610
申请日：2005-03-18
申请人： Jeffry Leblanc , Robert Nottingham , Troy Herndon , Norbert Parsoneault , Lynn Le
发明人： Jeffry Leblanc , Robert Nottingham , Troy Herndon , Norbert Parsoneault , Lynn Le
IPC分类号： G11B17/02 , G11B19/20
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。

6. 发明申请

US20060291757A1 Hub and spindle assembly having asymmetrical seals for a disc drive memory system 有权
标题翻译：用于盘驱动器存储器系统的毂和主轴组件具有不对称的密封
公开(公告)号：US20060291757A1
公开(公告)日：2006-12-28
申请号：US11166823
申请日：2005-06-24
申请人： Jeffry LeBlanc , Troy Herndon , Robert Nottingham
发明人： Jeffry LeBlanc , Troy Herndon , Robert Nottingham
IPC分类号： F16C32/06
CPC分类号： F16C32/0659 , F16C17/102 , F16C17/107 , F16C32/064 , F16C33/103 , F16C33/1085 , F16C33/745 , F16C41/008 , F16C2370/12 , G11B19/2009
摘要： A rotating hub and fixed spindle assembly with first and second fluid dynamic journal bearings and first and second fluid dynamic thrust bearings for a disc drive memory system has a pump seal and a radial ring seal at a first axial terminus for lubricant containment, and a capillary seal and a labyrinth seal at a second axial terminus for lubricant containment and storage. Lubricant fluid pressure differences between first and second seals are minimized through one or more lubricant fluid communicating channels in the hub assembly, in order to minimize lubricant fluid loss through a seal. Lubricant fluid can also be purged of any air bubbles by lubricant fluid circulation through the channel.
摘要翻译：具有第一和第二流体动态轴颈轴承的旋转轮毂和固定主轴组件以及用于盘驱动器存储器系统的第一和第二流体动力推力轴承在用于润滑剂容纳的第一轴向端部处具有泵密封件和径向环形密封件，并且毛细管密封件和第二轴向末端的迷宫式密封件用于润滑剂容纳和储存。通过轮毂组件中的一个或多个润滑剂流体连通通道使第一和第二密封件之间的润滑剂流体压力差最小化，以便通过密封件减少润滑剂流体损失。润滑剂流体也可以通过通过通道的润滑剂流体循环来清除任何气泡。

7. 发明授权

US06822825B2 Stiffness compensation for a thermally compensated fluid dynamic bearing 失效
标题翻译：热补偿流体动力轴承的刚度补偿
公开(公告)号：US06822825B2
公开(公告)日：2004-11-23
申请号：US10034711
申请日：2001-12-28
申请人： Troy Herndon , Jeffry LeBlanc , Robert Nottingham
发明人： Troy Herndon , Jeffry LeBlanc , Robert Nottingham
IPC分类号： G11B1702
CPC分类号： G11B19/2009 , F16C17/24 , F16C2370/12 , H02K5/165
摘要： The present invention provides a hydrodynamic bearing design which is simple and reliable in design, while incorporating a shaft with a plug of high elastic modulus material fitted within a cylinder of a lower elastic modulus material than that of the plug, thereby compensating for temperature variations while maintaining radial stiffness of the system over a wide range of temperatures. The design is relatively inexpensive and easy to replicate in a high volume manufacturing process.
摘要翻译：本发明提供了一种流体动力轴承设计，其设计简单可靠，同时将具有高弹性模量材料的塞子的轴装配在比弹簧模块材料低的弹性模量材料的气缸内，从而补偿温度变化，在宽的温度范围内保持系统的径向刚度。该设计相对便宜并且容易在大量制造过程中复制。

8. 发明授权

US06282053B1 Adhesiveless disc drive spindle assembly 失效
标题翻译：无胶碟驱动主轴总成
公开(公告)号：US06282053B1
公开(公告)日：2001-08-28
申请号：US08286287
申请日：1994-08-05
申请人： Donald MacLeod , Long Van Nguyen , Alireza Rahimi , Robert Nottingham
发明人： Donald MacLeod , Long Van Nguyen , Alireza Rahimi , Robert Nottingham
IPC分类号： G11B1708
CPC分类号： H02K15/10 , G11B19/2009 , H02K1/182 , H02K1/28 , H02K5/1737
摘要： A spindle for a disc drive which can be assembled without the use of adhesives is disclosed. Stator electromagnets are encapsulated in a plastic overmold. The stator is clamped to the base with a clamp spring arrangement. An offset between the stator surface and the base flange is covered by a clamp spring such that binding of the clamp spring by a fastener allows for an adjustable biasing force to secure the stator in place. The magnet and flux shield are attached to the rotor sleeve by an easily positioned retaining ring. An elastic foam washer provides a controlled force to secure the magnet and flux shield in place on the rotor. A second elastic foam washer and a shield provide a controlled biasing force to hold magnetic fluid and magnetic poles to the rotor. Bearings are laser welded to the rotor and the shaft to rotatably mount the rotor about the shaft.
摘要翻译：公开了一种可以在不使用粘合剂的情况下组装的用于盘驱动器的主轴。定子电磁体封装在塑料包覆模具中。定子用夹紧弹簧装置夹紧到基座上。定子表面和基部凸缘之间的偏移由夹紧弹簧覆盖，使得夹紧弹簧通过紧固件的夹紧允许可调节的偏置力将定子固定就位。磁体和磁通屏蔽件通过易于定位的保持环附接到转子套筒。弹性泡沫垫圈提供受控的力，以将磁体和磁通屏蔽件固定在转子上的适当位置。第二弹性泡沫垫圈和屏蔽件提供受控的偏压力以将磁性流体和磁极保持在转子上。轴承被激光焊接到转子和轴上以将转子可旋转地安装在轴上。

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