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1. 发明授权

US5619389A Stator isolation for spindle motor 失效
标题翻译：主轴电机的定子隔离
公开(公告)号：US5619389A
公开(公告)日：1997-04-08
申请号：US386883
申请日：1995-02-10
申请人： John C. Dunfield , Gunter K. Heine
发明人： John C. Dunfield , Gunter K. Heine
IPC分类号： G11B19/20 , G11B25/04 , H02K1/18 , G11B17/02 , H02K1/12 , H02K5/24
CPC分类号： H02K1/187 , G11B19/2018 , H02K1/185 , G11B25/043
摘要： A spindle motor for rotating at least one disc in a data storage device includes a base, a shaft, a rotor and a stator. A bearing interconnects the rotor with the shaft and allows the rotor to rotate about the shaft. A resilient coupling, such as an O-ring, is compressed between the stator and the base to mechanically isolate the stator from the base and thereby reduce the generation of acoustic noise in the storage device.
摘要翻译：用于在数据存储装置中旋转至少一个盘的主轴电动机包括基座，轴，转子和定子。轴承将转子与轴相互连接并允许转子绕轴旋转。诸如O形圈之类的弹性联接件在定子和基座之间被压缩，以使定子与基座机械隔离，从而减少存储装置中的声音噪声的产生。

2. 发明授权

US5459362A Small form factor actuator for improved functionality and linearity 失效
标题翻译：小尺寸促动器，用于改进功能和线性度
公开(公告)号：US5459362A
公开(公告)日：1995-10-17
申请号：US246853
申请日：1994-05-19
申请人： John C. Dunfield , Gunter K. Heine
发明人： John C. Dunfield , Gunter K. Heine
IPC分类号： G11B5/55 , H02K41/035 , H02K33/18
CPC分类号： H02K41/0358 , G11B5/5521
摘要： A voice coil motor (VCM) for a small form factor hard disk drive having a contoured flux field in the air gap wherein adjoining regions of oppositely directed magnetic flux form a transition zone. In the preferred embodiment, the magnetic structure assembly is contoured or shaped. The magnetic structure assembly comprises pole pieces and magnets. The shaping may be of either of the pole pieces or of either of the magnets. The shaping may be along the top edge only, along the bottom edge only, or along both edges. Alternatively, the shaping may be accomplished in the transverse plane, that is by shaping the profile in thickness. The shaping can be done so that when the flux is falling in one gap it is rising in the other gap. In this manner, the sum of the flux in the two gaps remains the same.
摘要翻译：一种用于小尺寸硬盘驱动器的音圈电机（VCM），其在气隙中具有轮廓通量场，其中相对定向磁通量的相邻区域形成过渡区。在优选实施例中，磁性结构组件成形或成形。磁性结构组件包括极片和磁体。成形可以是极片或任一个磁体中的任一个。成型可以仅沿着顶部边缘，仅沿着底部边缘，或沿着两个边缘。或者，可以在横向平面中完成成形，即通过使型材厚度成形。可以进行成形，使得当通量落在一个间隙中时，其在另一间隙中上升。以这种方式，两个间隙中的通量的总和保持相同。

3. 发明授权

US5659215A Small form factor actuator for improved functionality and linearity 失效
标题翻译：小尺寸促动器，用于改进功能和线性度
公开(公告)号：US5659215A
公开(公告)日：1997-08-19
申请号：US486391
申请日：1995-06-07
申请人： John C. Dunfield , Gunter K. Heine
发明人： John C. Dunfield , Gunter K. Heine
IPC分类号： G11B5/55 , H02K41/035 , H02K33/18
CPC分类号： G11B5/5521 , H02K41/0358
摘要： A voice coil motor (VCM) for a small form factor hard disk drive having a contoured flux field in the air gap wherein adjoining regions of oppositely directed magnetic flux form a transition zone. In the preferred embodiment, the magnetic structure assembly is contoured or shaped. The magnetic structure assembly comprises pole pieces and magnets. The shaping may be of either of the pole pieces or of either of the magnets. The shaping may be along the top edge only, along the bottom edge only, or along both edges. Alternatively, the shaping may be accomplished in the transverse plane, that is by shaping the profile in thickness. The shaping can be done so that when the flux is falling in one gap it is rising in the other gap. In this manner, the sum of the flux in the two gaps remains the same.
摘要翻译：一种用于小尺寸硬盘驱动器的音圈电机（VCM），其在气隙中具有轮廓通量场，其中相对定向磁通量的相邻区域形成过渡区。在优选实施例中，磁性结构组件成形或成形。磁性结构组件包括极片和磁体。成形可以是极片或任一个磁体中的任一个。成型可以仅沿着顶部边缘，仅沿着底部边缘，或沿着两个边缘。或者，可以在横向平面中完成成形，即通过使型材厚度成形。可以进行成形，使得当通量落在一个间隙中时，其在另一间隙中上升。以这种方式，两个间隙中的通量的总和保持相同。

4. 发明授权

US5610463A Passive magnetic bearings for a spindle motor 失效
标题翻译：用于主轴电机的无源磁轴承
公开(公告)号：US5610463A
公开(公告)日：1997-03-11
申请号：US459113
申请日：1995-06-02
申请人： John C. Dunfield , Kamran Oveyssi , Gunter K. Heine
发明人： John C. Dunfield , Kamran Oveyssi , Gunter K. Heine
IPC分类号： F16C17/08 , F16C39/06 , G11B19/20 , H02K7/09 , H02K21/14
CPC分类号： F16C17/08 , F16C25/045 , F16C32/0417 , F16C32/0425 , F16C39/063 , G11B19/2009 , H02K7/09 , F16C2370/12
摘要： An apparatus for rotatably journaling a rotor of a spindle motor about a shaft comprising a plurality of annular ring multipole magnets, each ring comprised of a plurality of axially aligned magnets whose polarity is alternated along the radius of the ring. The annular ring multi-pole magnets are disposed on both the rotor and stator of a spindle motor in opposition in attraction mode, or a complete offset repulsion mode with like poles facing one another with an full offset, thereby forming a radially stable magnetic bearing for maintaining rotor displacement about a shaft in conjunction with a conventional axial pivot.
摘要翻译：一种用于将主轴电动机的转子围绕包括多个环形多极磁体的轴可旋转地旋转的装置，每个环由多个轴向对准的磁体组成，其极性沿着环的半径交替。环形多极磁铁在主轴电动机的转子和定子上以吸引模式相对设置，或者具有相同磁极彼此面对的全偏移斥力模式，从而形成径向稳定的磁轴承，结合传统的轴向枢轴保持绕轴的转子位移。

5. 发明授权

US5600511A Particle containment and fluid retention with barrier seal in magnetic disc drive 失效
标题翻译：在磁盘驱动器中具有阻挡密封的颗粒容纳和流体保留
公开(公告)号：US5600511A
公开(公告)日：1997-02-04
申请号：US386882
申请日：1995-02-10
申请人： John C. Dunfield , Gunter K. Heine
发明人： John C. Dunfield , Gunter K. Heine
IPC分类号： G11B25/04 , G11B33/14 , G11B17/02
CPC分类号： G11B33/1473 , G11B25/043
摘要： A disc drive includes a disc drive motor for rotating a magnetic storage disc. The disc drive includes a sealed disc drive chassis which provides a substantially contaminant-free cavity. A fixed member is coupled to the disc drive chassis and a rotor is rotatably about the fixed member for carrying a magnetic storage disc in the contaminant-free cavity. A bearing assembly between the rotor and fixed member allows rotation of the rotor relative to the fixed member. A gap defined between the rotor and the fixed member separates the bearing assembly from the contaminant-free environment and the magnetic storage disc. A barrier material in the gap has a characteristic which reduces contaminant flow thereby. The barrier material tends to prevent liquid and particulate contaminants from escaping from the drive motor and entering the sealed cavity.
摘要翻译：盘驱动器包括用于旋转磁存储盘的盘驱动马达。盘驱动器包括密封的盘驱动器底架，其提供基本上无污染的空腔。固定构件联接到盘驱动器底座，并且转子围绕固定构件可旋转，用于将磁存储盘携带在无污染物空腔中。转子和固定构件之间的轴承组件允许转子相对于固定构件旋转。限定在转子和固定构件之间的间隙将轴承组件与无污染环境和磁存储盘分离。间隙中的阻隔材料具有由此降低污染物流动的特性。阻挡材料倾向于防止液体和微粒污染物从驱动马达中逸出并进入密封腔。

6. 发明授权

US5598071A Method for starting and commutating a permanent-magnet direct current motor having a single phase winding 失效
标题翻译：具有单相绕组的永磁直流电动机的起动和换向的方法
公开(公告)号：US5598071A
公开(公告)日：1997-01-28
申请号：US483074
申请日：1995-06-07
申请人： John C. Dunfield , Gunter K. Heine , Marcel Jufer , Kamran Oveyssi
发明人： John C. Dunfield , Gunter K. Heine , Marcel Jufer , Kamran Oveyssi
IPC分类号： H02K29/03 , H02P6/22 , H02P1/00
CPC分类号： H02K29/03 , H02P6/22
摘要： Starting of single phase permanent magnet direct current motors in the desired direction of rotation is accomplished by providing a look up table stored in memory giving the correct sign or polarity of current for the angular position of the permanent magnet rotor of the motor. This stored look up table is developed by initially injecting current pulses of opposite polarity at different angular positions of the rotor, determining the difference between the rise times, and mapping the sign and the magnitude of the differences versus angular position. Thereafter, to start the motor in the correct direction, it is only necessary to inject current pulses of opposite polarity to know the angular position of the rotor and the polarity of the current required to start the motor in the correct direction. After the motor has been started, it is commutated by blanking the drive current at the zero crossings of the back emf. The current is turned off prior to a back emf crossing, and turned back on after the back emf crossing. The stored look up table tells how long to apply drive current before blanking because the table indicates how far away the zero crossing is, which is convened into the time remaining before blanking the drive current. Several embodiments of single phase motors are disclosed, as well as circuits useful for starting a motor and sensing back emf.
摘要翻译：通过提供存储在存储器中的查询表来实现在期望的旋转方向上的单相永磁直流电动机的起动，为电动机的永磁转子的角位置提供正确的电流值或极性。通过在转子的不同角位置初始地注入相反极性的电流脉冲，确定上升时间之间的差异，以及映射差异与角位置的符号和幅度，来开发该存储的查找表。此后，为了以正确的方向启动电动机，仅需要注入相反极性的电流脉冲，以知道转子的角位置和正确方向启动电动机所需的电流极性。电机起动后，通过在后电动势过零点处消除驱动电流进行换向。电流在后方电流通过之前关闭，并在后方电流通过后转回。存储的查询表指示在消隐之前应用驱动器电流多长时间，因为该表指示过零点过多的距离，这将在消隐驱动电流之前进入剩余时间。公开了单相电动机的几个实施例，以及可用于起动电动机和感测反电动势的电路。

7. 发明授权

US5541460A Passive magnetic bearings for a spindle motor 失效
公开(公告)号：US5541460A
公开(公告)日：1996-07-30
申请号：US201676
申请日：1994-02-25
申请人： John C. Dunfield , Kamran Oveyssi , Gunter K. Heine
发明人： John C. Dunfield , Kamran Oveyssi , Gunter K. Heine
IPC分类号： F16C17/08 , F16C39/06 , G11B19/20 , H02K7/09 , H02K7/00
CPC分类号： F16C17/08 , F16C25/045 , F16C32/0417 , F16C32/0425 , F16C39/063 , G11B19/2009 , H02K7/09 , F16C2370/12
摘要： An apparatus for rotatably journaling a rotor of a spindle motor about a shaft comprising a plurality of annular ring multi-pole magnets, each ring comprised of a plurality of axially aligned magnets whose polarity is alternated along the radius of the ring. The annular ring multi-pole magnets are disposed on both the rotor and stator of a spindle motor in opposition in attraction mode, or a complete offset repulsion mode with like poles facing one another with an full offset, thereby forming a radially stable magnetic bearing for maintaining rotor displacement about a shaft in conjunction with a conventional axial pivot.

8. 发明授权

US5578882A Passive magnetic bearings for a spindle motor 失效
标题翻译：用于主轴电机的无源磁轴承
公开(公告)号：US5578882A
公开(公告)日：1996-11-26
申请号：US460648
申请日：1995-06-02
申请人： John C. Dunfield , Kamran Oveyssi , Gunter K. Heine
发明人： John C. Dunfield , Kamran Oveyssi , Gunter K. Heine
IPC分类号： F16C17/08 , F16C39/06 , G11B19/20 , H02K7/09 , H02K21/14
CPC分类号： F16C17/08 , F16C25/045 , F16C32/0417 , F16C32/0425 , F16C39/063 , G11B19/2009 , H02K7/09 , F16C2370/12
摘要： An apparatus for rotatably journaling a rotor of a spindle motor about a shaft comprising a plurality of annular ring multi-pole magnets, each ring comprised of a plurality of axially aligned magnets whose polarity is alternated along the radius of the ring. The annular ring multi-pole magnets are disposed on both the rotor and stator of a spindle motor in opposition in attraction mode, or a complete offset repulsion mode with like poles facing one another with an full offset, thereby forming a radially stable magnetic bearing for maintaining rotor displacement about a shaft in conjunction with a conventional axial pivot.
摘要翻译：一种用于将主轴电动机的转子围绕包括多个环形多极磁体的轴可旋转地旋转的装置，每个环由多个轴向对准的磁体组成，其极性沿着环的半径交替。环形多极磁铁在主轴电动机的转子和定子上以吸引模式相对设置，或者具有相同磁极彼此面对的全偏移斥力模式，从而形成径向稳定的磁轴承，结合传统的轴向枢轴保持绕轴的转子位移。

9. 发明授权

US6080352A Method of magnetizing a ring-shaped magnet 失效
标题翻译：磁化环形磁铁的方法
公开(公告)号：US6080352A
公开(公告)日：2000-06-27
申请号：US828487
申请日：1997-03-31
申请人： John C. Dunfield , Gunter K. Heine , Marcel Jufer , Kamran Oveyssi
发明人： John C. Dunfield , Gunter K. Heine , Marcel Jufer , Kamran Oveyssi
IPC分类号： H02K29/03 , B29C71/04 , H01F13/00
CPC分类号： H02K29/03 , Y10S264/58 , Y10T29/49075
摘要： A brushless permanent-magnet direct current motor has a permanent magnet which is magnetized to create an offset angle between detent and mutual torques for providing sufficient starting torque for all relative orientations between the stator and the rotor of the motor. This is accomplished by providing a permanent magnet in which the global magnetization of the magnet has been disrupted by the application of a local magnetic field to a portion of the magnet, thereby to provide a magnetic anomaly in the global magnetization. Also, a method of magnetization of the magnet is described.
摘要翻译：无刷永磁直流电动机具有永久磁铁，其被磁化以在制动和相互转矩之间产生偏移角，以提供用于电动机的定子和转子之间的所有相对取向的足够的启动转矩。这是通过提供一种永久磁铁来实现的，其中磁体的全局磁化已经通过对磁体的一部分施加局部磁场而被破坏，由此在全局磁化中提供磁异常。此外，描述了磁体的磁化方法。

10. 发明授权

US5936410A Hydrodynamic bearing including means for monitoring the capacitance between the rotor and stator of a hydrodynamic bearing 失效
标题翻译：流体动力轴承包括用于监测流体动力轴承的转子和定子之间的电容的装置
公开(公告)号：US5936410A
公开(公告)日：1999-08-10
申请号：US838648
申请日：1997-04-09
申请人： John C. Dunfield , Gunter K. Heine
发明人： John C. Dunfield , Gunter K. Heine
IPC分类号： G01B7/00 , F16C17/10 , F16C17/24 , F16C33/10 , G01B7/14 , G01M13/04 , G01R27/26
CPC分类号： F16C17/24 , F16C33/10 , G01B7/144 , G01M13/04 , F16C2233/00
摘要： A hydrodynamic bearing is disclosed which includes a shaft and a rotor rotating relative to one another and defining a hydrodynamic bearing in the gap between the relatively rotating parts. Also disclosed is a method for identifying or signaling potential failure of the hydrodynamic bearing. The method for identifying or signaling potential failure includes a capacitance detector for generating a signal representing the capacitance across the gap defining the hydrodynamic bearing, a comparator for comparing the capacitance to an established threshold, and an indicator for providing a signal indicating that operation of the information storage device incorporating the hydrodynamic bearing should continue or that an interruption is likely.
摘要翻译：公开了一种流体动力轴承，其包括轴和相对于彼此旋转并且在相对旋转部分之间的间隙中限定流体动力轴承的转子和转子。还公开了用于识别或指示流体动力轴承的潜在故障的方法。用于识别或信令潜在故障的方法包括：电容检测器，用于产生表示限定流体动力轴承的间隙的电容的信号，用于将电容与建立的阈值进行比较的比较器，以及用于提供指示结合流体动力轴承的信息存储装置应该继续，或者中断是可能的。

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