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1. 发明授权

US6144523A Simplified conical bearing with independent flow paths 失效
标题翻译：具有独立流路的简化锥形轴承
公开(公告)号：US6144523A
公开(公告)日：2000-11-07
申请号：US994099
申请日：1997-12-19
申请人： Samnathan Murthy , Alan Lyndon Grantz , Steve Parsoneault , Roger Allen Addy , Peter R. Riegler , Mohamed Mizanur Rahman
发明人： Samnathan Murthy , Alan Lyndon Grantz , Steve Parsoneault , Roger Allen Addy , Peter R. Riegler , Mohamed Mizanur Rahman
IPC分类号： F16C17/10 , F16C33/10 , F16C33/74 , G11B19/20 , H02K5/124 , G11B17/02 , F16C32/06
CPC分类号： F16C41/008 , F16C17/105 , F16C33/1085 , F16C33/745 , G11B19/2009 , H02K5/124 , F16C2370/12
摘要： A hydrodynamic bearing useful as a bearing cartridge or as the cartridge may be incorporated into a spindle motor or the like, where the bearing includes a stationary shaft and two independent bearings, comprising a top cone and a bottom cone separated by a segment of the shaft. The bearing includes a sleeve rotating around and surrounding the shaft, and the top cone and bottom cone and defining a narrow gap between the sleeve and the shaft and cones. Sealing plates are supported on the sleeve to seal off the ends of the bearing and are located along the shaft beyond the cones. A gap also exists between an interior surface portion of each cone and the shaft. Thus, separate flow paths are established, one around the top cone and one around the bottom cone. By providing two independent paths, the flow rates do not have to be the same in each conical flow path for the bearing seals to function properly.
摘要翻译：可用作轴承筒或筒的流体动力轴承可以结合到主轴电机等中，其中轴承包括固定轴和两个独立的轴承，包括顶部锥体和由轴的一部分分开的底部锥体。轴承包括围绕轴围绕并且围绕轴的套筒，以及顶部锥形和底部锥形件，并且在套筒和轴和锥体之间限定狭窄的间隙。密封板支撑在套筒上以密封轴承的端部并且沿着轴位于锥体以外。在每个锥体的内表面部分和轴之间也存在间隙。因此，建立单独的流动路径，一个围绕顶部锥体，一个围绕底部锥体。通过提供两个独立的路径，每个锥形流动路径中的流速不必相同，用于轴承密封件正常工作。

2. 发明授权

US06583952B1 In-hub spindle motor with separate fluid dynamic bearings 有权
标题翻译：内置主轴电机，带独立的流体动力轴承
公开(公告)号：US06583952B1
公开(公告)日：2003-06-24
申请号：US09621938
申请日：2000-07-24
申请人： Alan Lyndon Grantz , Norbert Steven Parsoneault , Samnathan Murthy , Hans Leuthold , Mohamed Mizanur Rahman
发明人： Alan Lyndon Grantz , Norbert Steven Parsoneault , Samnathan Murthy , Hans Leuthold , Mohamed Mizanur Rahman
IPC分类号： G11B1702
CPC分类号： F16C17/105 , F16C33/103 , F16C33/107 , F16C33/74 , F16C2370/12 , G11B19/2009 , H02K5/124
摘要： A hydrodynamic bearing system where the bearing includes a shaft and two independent bearings, including a top cone or bi-sphere and a bottom cone or bi-sphere separated by a segment of the shaft. The bearing includes a hub supported bearing element rotating around the shaft and the shaft supported top cone and bottom cone; complementary surfaces of the bearing element and the cone define a narrow gap between the bearing support element for the bearing fluid. Sealing plates or seal elements define a fluid gap with a radially extending face of the cone; a gap also exists between an interior surface portion of each cone and the shaft. These gaps are connected so that separate flow paths are established, one around the top cone or bi-sphere and one around the bottom cone or bi-sphere. By providing two independent bearings, the stator can be mounted to the shaft, facing magnets supported on the hub to form an in-hub motor. When the load or RPM changes, the fluid pressure or movement in each bearing may change but the function of the bearing and its ability to provide stiffness and stability to the system will not be lessened.
摘要翻译：一种流体动力轴承系统，其中轴承包括轴和两个独立的轴承，包括顶部锥体或双球体以及由轴的一部分分隔的底部锥体或双球体。轴承包括围绕轴旋转的轮毂支撑的轴承元件和轴支撑的顶锥和底锥; 轴承元件和锥体的互补表面限定用于轴承流体的轴承支撑元件之间的窄间隙。密封板或密封元件与锥体的径向延伸的表面限定流体间隙; 在每个锥体的内表面部分和轴之间也存在间隙。这些间隙被连接，使得形成单独的流动路径，一个围绕顶部圆锥体或双球体，一个围绕底部锥体或双球体。通过提供两个独立的轴承，定子可以安装到轴上，面向支撑在轮毂上的磁体，以形成内轮毂电机。当负载或RPM变化时，每个轴承中的流体压力或运动可能发生变化，但是轴承的功能及其对系统提供刚度和稳定性的能力将不会降低。

3. 发明授权

US6118620A In-hub spindle motor with separate fluid dynamic bearings 失效
标题翻译：内置主轴电机，带独立的流体动力轴承
公开(公告)号：US6118620A
公开(公告)日：2000-09-12
申请号：US60225
申请日：1998-04-14
申请人： Alan Lyndon Grantz , Norbert Steven Parsoneault , Samnathan Murthy , Hans Leuthold , Mohamed Mizanur Rahman
发明人： Alan Lyndon Grantz , Norbert Steven Parsoneault , Samnathan Murthy , Hans Leuthold , Mohamed Mizanur Rahman
IPC分类号： F16C17/10 , F16C33/10 , F16C33/74 , G11B19/20 , H02K5/124 , G11B17/02 , F16C32/06
CPC分类号： F16C17/105 , F16C33/103 , F16C33/107 , F16C33/74 , G11B19/2009 , H02K5/124 , F16C2370/12
摘要： A hydrodynamic bearing system where the bearing includes a shaft and two independent bearings, comprising a top cone or bi-sphere and a bottom cone or bi-sphere separated by a segment of the shaft. The bearing includes a hub supported bearing element rotating around the shaft and the shaft supported top cone and bottom cone; complementary surfaces of said bearing element and said cone define a narrow gap between the bearing support element for the bearing fluid. Sealing plates or seal elements define a fluid gap with a radially extending face of the cone; a gap also exists between an interior surface portion of each cone and the shaft. These gaps are connected so that separate flow paths are established, one around the top cone or bi-sphere and one around the bottom cone or bi-sphere. By providing two independent bearings, the stator can be mounted to the shaft, facing magnets supported on the hub to form an in-hub motor. When the load or RPM changes, the fluid pressure or movement in each bearing may change but the function of the bearing and its ability to provide stiffness and stability to the system will not be lessened.
摘要翻译：一种流体动力轴承系统，其中轴承包括轴和两个独立的轴承，包括顶部锥体或双球体以及由轴的一部分分开的底部锥体或双球体。轴承包括围绕轴旋转的轮毂支撑的轴承元件和轴支撑的顶锥和底锥; 所述轴承元件和所述锥体的互补表面限定用于轴承流体的轴承支撑元件之间的窄间隙。密封板或密封元件与锥体的径向延伸的表面限定流体间隙; 在每个锥体的内表面部分和轴之间也存在间隙。这些间隙被连接，使得形成单独的流动路径，一个围绕顶部圆锥体或双球体，一个围绕底部锥体或双球体。通过提供两个独立的轴承，定子可以安装到轴上，面向支撑在轮毂上的磁体，以形成内轮毂电机。当负载或RPM变化时，每个轴承中的流体压力或运动可能发生变化，但是轴承的功能及其对系统提供刚度和稳定性的能力将不会降低。

4. 发明授权

US06799892B2 Hybrid spindle bearing 有权
标题翻译：混合主轴轴承
公开(公告)号：US06799892B2
公开(公告)日：2004-10-05
申请号：US10186479
申请日：2002-06-28
申请人： Hans Leuthold , Michael D. Kennedy , Alan Lyndon Grantz , Susan Immisch , Norbert Steve Parsoneault , Mohamed Mizanur Rahman
发明人： Hans Leuthold , Michael D. Kennedy , Alan Lyndon Grantz , Susan Immisch , Norbert Steve Parsoneault , Mohamed Mizanur Rahman
IPC分类号： F16C1710
CPC分类号： F16C17/10 , F16C33/1005 , F16C33/1025 , F16C2370/12 , G11B19/2018
摘要： A bearing system in which an axially stiff narrow gap fluid dynamic gas bearing is preloaded by an axially less stiff larger gap fluid dynamic bearing. As an example two fluid dynamic bearings are provided spaced apart along a shaft, one of the bearings comprising a fluid dynamic bearing, the other comprising an air bearing. The fluid dynamic bearing has a larger gap, while the air bearing has a relatively small gap. The overall working surface area of the air bearing may be twice as much or more than the working surface area of the fluid bearing.
摘要翻译：轴承系统，其中轴向刚性窄间隙流体动态气体轴承由轴向较小刚度较大的间隙流体动力轴承预加载。作为示例，两个流体动力轴承沿着轴间隔开设置，其中一个轴承包括流体动力轴承，另一个包括空气轴承。流体动力轴承具有较大的间隙，而空气轴承的间隙相对较小。空气轴承的总体工作表面积可以是流体轴承的工作表面面积的两倍或更多。

5. 发明授权

US06154339A Centrifugal capillary seal for use with fluid dynamic bearings 失效
标题翻译：用于流体动力轴承的离心毛细管密封
公开(公告)号：US06154339A
公开(公告)日：2000-11-28
申请号：US60328
申请日：1998-04-14
申请人： Alan Lyndon Grantz , Mohamed Mizanur Rahman
发明人： Alan Lyndon Grantz , Mohamed Mizanur Rahman
IPC分类号： F16C33/10 , F16C33/74 , G11B19/20 , G11B17/02
CPC分类号： F16C33/745 , F16C17/026 , G11B19/2009 , F16C2370/12
摘要： An improved capillary seal for use with a hydrodynamic bearing is disclosed, which provides a stronger or stiffer seal for a fluid dynamic bearing motor which is open at both ends, and is used with top cover attached motors utilizing fluid dynamic bearings. The design of the capillary seal uses centrifuigal force to actively push the oil back into the FDB while it is spinning, combined with the capillary tension which holds oil in the FDB during stationary periods. Also, the seal design comprises two walls which converge toward an apex near an adjacent fluid dynamic bearing. This design allows air, trapped within the seal and the associated FDB, to be expelled, eliminating air bubbles from the fluid dynamic bearing.
摘要翻译：公开了一种用于流体动力轴承的改进的毛细管密封件，其为在两端敞开的流体动力轴承马达提供更强或更硬的密封，并且与使用流体动力轴承的顶盖连接的马达一起使用。毛细管密封的设计使用离心力在静止期间将油回吸到FDB中，同时在FDB中保持油的毛细管张力。此外，密封设计包括两个壁，其朝向相邻流体动力轴承附近的顶点会聚。这种设计允许空气被封闭在密封件和相关联的FDB内，以排出流体动力轴承的气泡。

6. 发明授权

US06473271B1 Aerodynamically streamlined actuator arm for disc drives 失效
标题翻译：用于磁盘驱动器的空气动力学流线型执行器臂
公开(公告)号：US06473271B1
公开(公告)日：2002-10-29
申请号：US09590559
申请日：2000-06-09
申请人： Mohamed Mizanur Rahman , Hans Leuthold
发明人： Mohamed Mizanur Rahman , Hans Leuthold
IPC分类号： G11B555
CPC分类号： G11B5/4833
摘要： A disc drive actuator arm is an extended arm having forward edge to engage fluid flow due to rotation of the disc, a rear edge, and a top surface and a bottom surface along which fluid flows. The top and bottom surfaces join the forward and rear edges, and the fluid flow has a boundary layer along the top surface and the bottom surface. The arm has an aerodynamic cross-section so that the fluid flow boundary layer does not separate at the forward and rear edges. The fluid flow past the arm from the forward edge to the rear edge is substantially laminar to prevent vortex shedding.
摘要翻译：盘驱动器致动器臂是具有前缘的延伸臂，其由于盘的旋转，后边缘以及流体流过的顶表面和底表面而接合流体流动。顶表面和底表面连接前后边缘，流体流沿着顶表面和底表面具有边界层。臂具有空气动力学横截面，使得流体流动边界层在前边缘和后边缘处不分离。从前缘到后边缘的液体流经过臂大体层流以防止涡流脱落。

7. 发明申请

US20090142009A1 FLUID DYNAMIC BEARING SYSTEM 审中-公开
标题翻译：流体动力轴承系统
公开(公告)号：US20090142009A1
公开(公告)日：2009-06-04
申请号：US12367466
申请日：2009-02-06
申请人： Troy Michael Herndon , Jeffry Arnold LeBlanc , Robert Alan Nottingham , Mohamed Mizanur Rahman
发明人： Troy Michael Herndon , Jeffry Arnold LeBlanc , Robert Alan Nottingham , Mohamed Mizanur Rahman
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/026 , F16C2370/12 , G11B19/2009 , Y10T29/497 , Y10T29/49764
摘要： Fluid dynamic bearing systems produced by specified methods are provided. In one example, a method for designing a fluid dynamic bearing system includes determining a first stability ratio for a first journal bearing configuration. The method further includes determining a second stability ratio for a second journal bearing configuration. In a further example system, the first configuration has two sub-journal bearings and the second configuration has three sub-journal bearings. The method may comprise comparing the two stability ratios to determine whether adding a sub-journal increases the stability ratio of the bearing system.
摘要翻译：提供了通过指定方法生产的流体动力轴承系统。在一个示例中，用于设计流体动态轴承系统的方法包括确定第一轴颈轴承配置的第一稳定性比。该方法还包括确定第二轴颈轴承配置的第二稳定性比。在另一示例系统中，第一配置具有两个子轴颈轴承，并且第二配置具有三个子轴颈轴承。该方法可以包括比较两个稳定比以确定是否添加子轴颈增加了轴承系统的稳定比。

8. 发明授权

US06292328B1 Both ends open fluid dynamic bearing having a journal in combination with a conical bearing 失效
标题翻译：两端打开流体动力轴承，其具有与锥形轴承组合的轴颈
公开(公告)号：US06292328B1
公开(公告)日：2001-09-18
申请号：US09536265
申请日：2000-03-27
申请人： Mohamed Mizanur Rahman , Gunter Karl Heine , Hans Leuthold , Raquib Uddin Khan
发明人： Mohamed Mizanur Rahman , Gunter Karl Heine , Hans Leuthold , Raquib Uddin Khan
IPC分类号： G11B1702
CPC分类号： G11B19/2009 , F16C17/102 , F16C33/107 , F16C33/745 , F16C2370/12 , G11B19/2018 , G11B19/2036
摘要： A method of creating an improved hydrodynamic fluid bearing is provided which is relatively insensitive to shock vibration changes in load and rotational speed. The hydrodynamic bearing motor in which the bearing is open at both the upper and lower ends, and in which the balance of fluid flow within the bearings is maintained. The assembly of the hydrodynamic bearing is more easily assembled, and the gaps are easily adjusted. In the design of the hydrodynamic bearing, the tolerances for assembly of the various components is minimized; that is, the critical nature of many of the gaps is diminished.
摘要翻译：提供了一种创建改进的流体动力流体轴承的方法，其对负载和转速的冲击振动变化相对不敏感。其中轴承在上端和下端都是敞开的流体动力轴承电动机，并保持轴承内的流体平衡。流体动力轴承的组装更容易组装，并且容易调节间隙。在流体动力轴承的设计中，各种部件的组装公差最小化; 也就是说，许多差距的关键性质就会减弱。

9. 发明授权

US6069768A Spindle motor with multiple thrust plate fluid dynamic bearing 有权
标题翻译：主轴电机带多个推力板流体动力轴承
公开(公告)号：US6069768A
公开(公告)日：2000-05-30
申请号：US300006
申请日：1999-04-26
申请人： Gunter Karl Heine , Raquib Uddin Khan , Mohamed Mizanur Rahman , Hans Leuthold
发明人： Gunter Karl Heine , Raquib Uddin Khan , Mohamed Mizanur Rahman , Hans Leuthold
IPC分类号： F16C17/10 , F16C33/10 , G11B5/48 , G11B19/20 , G11B25/04 , H02K7/08 , G11B17/02 , F16C32/06
CPC分类号： G11B19/2009 , F16C17/107 , G11B25/043
摘要： A method to create an improved hydrodynamic bearing which is relatively insensitive to changes in load and rotational speed is provided, wherein the hydrodynamic bearing is useful in a spindle motor for a disc drive or the like which is stiffer than known standard spindle motors so that the stability of the system and specifically of the actuator arm and transducer relative to the rotating disc is optimized. The hydrodynamic bearing can also be used as a bearing cartridge or as the cartridge that may be incorporated into a spindle motor or the like, where the bearing includes a shaft and at least two independent bearings each comprising a thrust plate supported on the shaft and a counter plate incorporated in a sleeve which is capable of relative rotation around the shaft.
摘要翻译：提供了一种创建对载荷和转速变化相对不敏感的改进的流体动力轴承的方法，其中，流体动力轴承可用于比已知标准主轴马达更硬的盘驱动器等的主轴电机，使得优化了系统，特别是致动器臂和换能器相对于旋转盘的稳定性。流体动力轴承还可以用作轴承筒或作为可以并入主轴电机等的盒，其中轴承包括轴和至少两个独立的轴承，每个轴承包括支撑在轴上的止推板和计数板结合在能够围绕轴相对旋转的套筒中。

10. 发明授权

US06933643B1 Multiple radial/axial surfaces to enhance fluid bearing performance 失效
标题翻译：多个径向/轴向表面，以增强流体轴承性能
公开(公告)号：US06933643B1
公开(公告)日：2005-08-23
申请号：US10350559
申请日：2003-01-23
申请人： Gunter K. Heine , Mohamed Mizanur Rahman
发明人： Gunter K. Heine , Mohamed Mizanur Rahman
IPC分类号： F16C17/10 , F16C33/10 , F16C39/06 , H02K7/08 , H02K7/09
CPC分类号： F16C33/107 , F16C17/10 , F16C25/045 , F16C39/063 , H02K7/088 , H02K7/09
摘要： In one embodiment, a plurality of axially oriented bearings defined along gaps between rotor and stator are provided to provide radial stiffness to the system; and these bearings are coupled together by radially oriented gaps. Grooves and/or magnets may be defined in order to maintain the stability and relative spacing of the gaps, while allowing free relative rotation of parts of the system with minimum power loss. A central conical bearing may be provided, having a fluid dynamic bearing around its conical surface, and being connected to an axially parallel but radially displaced axially oriented journal style bearing. The combined effects of these bearings is sufficient to maintain or even enhance the overall stability of the system.
摘要翻译：在一个实施例中，提供沿着转子和定子之间的间隙限定的多个轴向定向轴承，以向系统提供径向刚度; 并且这些轴承通过径向取向的间隙连接在一起。可以限定凹槽和/或磁体，以便保持间隙的稳定性和相对间隔，同时允许以最小的功率损耗自由地相对旋转系统的部件。可以提供中心圆锥形轴承，其具有围绕其圆锥形表面的流体动力轴承，并且连接到轴向平行但径向位移的轴向定位的轴颈轴承。这些轴承的组合效果足以维持或甚至提高系统的整体稳定性。

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