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1. 发明授权

US06801387B1 Control flow instability to reduce disk flutter and half frequency whirl 有权
标题翻译：控制流程不稳定，减少磁盘颤动和半频旋转
公开(公告)号：US06801387B1
公开(公告)日：2004-10-05
申请号：US09834392
申请日：2001-04-13
申请人： Mohamed M. Rahman
发明人： Mohamed M. Rahman
IPC分类号： G11B3314
CPC分类号： G11B33/148 , G11B25/043
摘要： To reduce the whirling air vortices which are normally formed at the disc tip, the outer edge of the disc surface may be gradually thinned down to a sharp tip. An alternative approach, the disc tip is gradually reduced in width and rounded at its outer edge. A flow obstruction may be incorporated in the shroud adjacent the edge of the disc tip. This obstruction may comprise a small substantially rectangular insert extending from the inner edge of the housing. Or, the inner surface of the portion of the housing adjacent the ends of the disc may incorporate grooves therein. These grooves, which are roughly herringbone in shape, and would have their center near either the edge of disc in a single disc environment or mid-way between the disc in a two disc environment.
摘要翻译：为了减少通常在盘尖处形成的旋转空气涡流，盘表面的外边缘可以逐渐变薄到尖端。另一种方法是，圆盘尖端的宽度逐渐减小并在其外边缘处变圆。流动阻塞可以并入围绕盘尖端边缘的护罩中。该障碍物可以包括从壳体的内边缘延伸的小的基本上矩形的插入件。或者，邻近盘的端部的壳体的部分的内表面可以在其中包含凹槽。这些凹槽的形状大致为人字形，并且在两个光盘环境中将其中心靠近光盘边缘的光盘环境或光盘之间的中间。

2. 发明授权

US07630166B2 Control flow instability to reduce disk flutter and half frequency whirl 有权
标题翻译：控制流程不稳定，减少磁盘颤动和半频旋转
公开(公告)号：US07630166B2
公开(公告)日：2009-12-08
申请号：US10957147
申请日：2004-09-30
申请人： Mohamed M. Rahman
发明人： Mohamed M. Rahman
IPC分类号： G11B5/012
CPC分类号： G11B33/148 , G11B25/043
摘要： To reduce the whirling air vortices which are normally formed at the disc tip, the outer edge of the disc surface may be gradually thinned down to a sharp tip. An alternative approach, the disc tip is gradually reduced in width and rounded at its outer edge. A flow obstruction may be incorporated in the shroud adjacent the edge of the disc tip. This obstruction may comprise a small substantially rectangular insert extending from the inner edge of the housing. Or, the inner surface of the portion of the housing adjacent the ends of the disc may incorporate grooves therein. These grooves, which are roughly herringbone in shape, and would have their center near either the edge of disc in a single disc environment or mid-way between the disc in a two disc environment.
摘要翻译：为了减少通常在盘尖处形成的旋转空气涡流，盘表面的外边缘可以逐渐变薄到尖端。另一种方法是，圆盘尖端的宽度逐渐减小并在其外边缘处变圆。流动阻塞可以并入围绕盘尖端边缘的护罩中。该障碍物可以包括从壳体的内边缘延伸的小的基本上矩形的插入件。或者，邻近盘的端部的壳体的部分的内表面可以在其中包含凹槽。这些凹槽的形状大致为人字形，并且在两个光盘环境中将其中心靠近光盘边缘的光盘环境或光盘之间的中间。

3. 发明授权

US6019516A Crowned conical bearing 失效
标题翻译：凸圆锥轴承
公开(公告)号：US6019516A
公开(公告)日：2000-02-01
申请号：US60312
申请日：1998-04-14
申请人： Hans Leuthold , Matt L. Shumway , Alan L. Grantz , Roger A. Addy , Norbert S. Parsoneault , Samnathan Murthy , Mohamed M. Rahman
发明人： Hans Leuthold , Matt L. Shumway , Alan L. Grantz , Roger A. Addy , Norbert S. Parsoneault , Samnathan Murthy , Mohamed M. Rahman
IPC分类号： F16C17/10 , F16C33/10 , G11B19/20
CPC分类号： F16C17/105 , F16C23/041 , F16C33/107 , G11B19/2009 , F16C2370/12
摘要： A bearing assembly including a bering cone (50) having a crowned bearing surface (56) with V-shaped grooves (60) that are shallow at their apex (62) and deepest at the outer edges (52, 54). When mated with a female bearing seat, lubricating fluid builds up along the midline of the bearing surface as the bearing seat rotates about the bearing cone.
摘要翻译：一种轴承组件，其包括具有冠形轴承表面（56）的凸耳锥体（50），V形凹槽（60）在其顶点（62）处是浅的并且在外边缘（52,54）处最深。当与母轴承座配合时，当轴承座绕轴承锥体旋转时，润滑液沿轴承表面的中线积聚。

4. 发明授权

US5795074A Grooved hydrodynamic thrust bearing 失效
标题翻译：槽式流体动力推力轴承
公开(公告)号：US5795074A
公开(公告)日：1998-08-18
申请号：US750486
申请日：1996-12-09
申请人： Mohamed M. Rahman , Hans Leuthold , Wesley Clark
发明人： Mohamed M. Rahman , Hans Leuthold , Wesley Clark
IPC分类号： F16C33/10 , G11B19/20 , F16C32/00
CPC分类号： F16C33/107 , F16C17/045 , F16C17/107 , G11B19/2009 , F16C2370/12
摘要： Two thrust bearing surfaces are separated by bearing fluid and are rotatable relative to one another. One of the bearing surfaces defines a plurality of continuous lands extending from an inner to an outer radius of the bearing surface. Adjacent lands define between them a continuous groove which has an undivided portion in an inner annulus and a divided portion in an outer annulus of the bearing surface. The continuous groove is divided in the divided portion by an intermediate land located between the adjacent continuous lands. The divided portion of the continuous groove communicates in unbroken fashion with the divided portion.
摘要翻译： PCT No.PCT / US96 / 16155 Sec。 371日期1996年12月9日第 102（e）1996年12月9日PCT PCT 1996年10月8日PCT公布。公开号WO97 / 25543 日期1997年7月17日两个推力轴承表面由轴承流体分离，并且可相对于彼此旋转。轴承表面中的一个限定了从轴承表面的内径延伸到外半径的多个连续的凸台。相邻的区域在它们之间形成连续的凹槽，该凹槽在内环空中具有不分割的部分，在支承表面的外环中具有分开的部分。连续槽在分割部分中被位于相邻的连续焊盘之间的中间焊盘分隔。连续槽的分割部分与分开的部分以不间断的方式连通。

5. 发明授权

US06280088B1 Crowned conical bearing 有权
标题翻译：凸圆锥轴承
公开(公告)号：US06280088B1
公开(公告)日：2001-08-28
申请号：US09495615
申请日：2000-02-01
申请人： Hans Leuthold , Matt L. Shumway , Alan L. Grantz , Roger A. Addy , Norbert S. Parsoneault , Samnathan Murthy , Mohamed M. Rahman
发明人： Hans Leuthold , Matt L. Shumway , Alan L. Grantz , Roger A. Addy , Norbert S. Parsoneault , Samnathan Murthy , Mohamed M. Rahman
IPC分类号： F16C1710
CPC分类号： F16C17/105 , F16C23/041 , F16C33/107 , F16C2370/12 , G11B19/2009
摘要： A bearing assembly including a bearing cone (50) having a crowned bearing surface (56) with V-shaped grooves (60) that are shallow at their apex (62) and deepest at the outer edges (52, 54). When mated with a female bearing seat, lubricating fluid builds up along the midline of the bearing surface as the bearing seat rotates about the bearing cone.
摘要翻译：一种轴承组件，包括具有冠形轴承表面（56）的轴承锥（50），其具有在其顶点（62）处较浅并且在外边缘（52,54）处最深的V形槽（60）。当与母轴承座配合时，当轴承座绕轴承锥体旋转时，润滑液沿轴承表面的中线积聚。

6. 发明授权

US6065877A Thermal compensation for fluid dynamic bearing using bimetal parts 有权
标题翻译：使用双金属零件的流体动力轴承的热补偿
公开(公告)号：US6065877A
公开(公告)日：2000-05-23
申请号：US178528
申请日：1998-10-23
申请人： Hans Leuthold , Alan Lyndon Grantz , Matt L. Shumway , Norbert S. Parsoneault , Etoli Wolff , Michael D. Kennedy , Samnathan Murthy , Raquib U. Khan , Mohamed M. Rahman , Wesley R. Clark
发明人： Hans Leuthold , Alan Lyndon Grantz , Matt L. Shumway , Norbert S. Parsoneault , Etoli Wolff , Michael D. Kennedy , Samnathan Murthy , Raquib U. Khan , Mohamed M. Rahman , Wesley R. Clark
IPC分类号： F16C17/22 , F16C33/10 , G11B19/20 , G11B25/04 , G11B33/14 , F16C32/06
CPC分类号： F16C33/107 , F16C17/105 , F16C17/22 , G11B19/2009 , G11B25/043 , G11B33/1433 , F16C2370/12 , Y10S384/905
摘要： A bimetallic part is formed from metals or comprises metals with different thermal expansion coefficients. A first element defines the part and defines one surface of the bearing gap and has a first coefficient of expansion and a second element is wholly or partially inserted into and constrained within the first element and having a different coefficient of thermal expansion so that as the temperature changes, the stress created by the differential expansion of the two elements will cause the overall part to deform elastically as a function of temperature. This deformation will cause the gap, the elements being properly selected, to narrow as temperature rises (and viscosity falls) and to widen as temperature falls (and viscosity rises).
摘要翻译：双金属部分由金属形成或包含具有不同热膨胀系数的金属。第一元件限定该部分并且限定轴承间隙的一个表面并且具有第一膨胀系数，并且第二元件被全部或部分地插入并限制在第一元件内并且具有不同的热膨胀系数，使得随着温度变化时，由两个元件的不同膨胀产生的应力将导致整个部件作为温度的函数弹性变形。随着温度升高（粘度下降），随着温度下降（粘度上升），这种变形将导致适当选择的元件的间隙变窄。

7. 发明申请

US20100046114A1 Control Flow Instability to Reduce Disk Flutter and Half Frequency Whirl 审中-公开
标题翻译：控制流程不稳定性可减少磁盘振荡和半频旋转
公开(公告)号：US20100046114A1
公开(公告)日：2010-02-25
申请号：US12607942
申请日：2009-10-28
申请人： Mohamed M. Rahman
发明人： Mohamed M. Rahman
IPC分类号： G11B33/14
CPC分类号： G11B33/148 , G11B25/043
摘要： To reduce the whirling air vortices which are normally formed at the disc tip, the outer edge of the disc surface may be gradually thinned down to a sharp tip. An alternative approach, the disc tip is gradually reduced in width and rounded at its outer edge. A flow obstruction may be incorporated in the shroud adjacent the edge of the disc tip. This obstruction may comprise a small substantially rectangular insert extending from the inner edge of the housing. Or, the inner surface of the portion of the housing adjacent the ends of the disc may incorporate grooves therein. These grooves, which are roughly herringbone in shape, and would have their center near either the edge of disc in a single disc environment or mid-way between the disc in a two disc environment.
摘要翻译：为了减少通常在盘尖处形成的旋转空气涡流，盘表面的外边缘可以逐渐变薄到尖端。另一种方法是，圆盘尖端的宽度逐渐减小并在其外边缘处变圆。流动阻塞可以并入围绕盘尖端边缘的护罩中。该障碍物可以包括从壳体的内边缘延伸的小的基本上矩形的插入件。或者，邻近盘的端部的壳体的部分的内表面可以在其中包含凹槽。这些凹槽的形状大致为人字形，并且在两个光盘环境中将其中心靠近光盘边缘的光盘环境或光盘之间的中间。

8. 发明授权

US5841607A Hydrodynamic seal for disc drive spindle motor 失效
标题翻译：磁盘驱动主轴电机的流体动力密封
公开(公告)号：US5841607A
公开(公告)日：1998-11-24
申请号：US835241
申请日：1997-04-07
申请人： Raquib U. Khan , Mohamed M. Rahman
发明人： Raquib U. Khan , Mohamed M. Rahman
IPC分类号： G11B17/02
CPC分类号： G11B17/02
摘要： A disc drive includes a disc drive motor and a chassis for providing a substantially contaminant-free cavity. The disc drive motor includes a fixed member coupled to the chassis and a rotor rotatable about the fixed member for rotating a magnetic storage disc in the contaminant-free cavity. A bearing interconnects the fixed member and the rotor. A viscous pump seal is located between the contaminant-free cavity and the bearing. The viscous pump seal includes a first pump surface carried by one of the fixed member and the rotor and a second, grooved pump surface carried by the other of the fixed member and the rotor. The first and second pump surfaces are separated by a gap. The viscous pump seal inhibits transfer of contaminants from the bearing to the contaminant-free cavity.
摘要翻译：盘驱动器包括盘驱动马达和用于提供基本上无污染空腔的底盘。盘驱动电动机包括联接到底盘的固定构件和可围绕固定构件旋转的转子，用于在无污染空腔中旋转磁存储盘。轴承将固定构件和转子互连。粘性泵密封件位于无污染空腔和轴承之间。粘性泵密封件包括由固定构件和转子中的一个承载的第一泵表面和由固定构件和转子中的另一个承载的第二沟槽泵表面。第一和第二泵表面被间隙隔开。粘性泵密封件阻止污染物从轴承转移到无污染的空腔。

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