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    • 1. 发明授权
    • Self-contained hydrodynamic bearing unit and seals
    • 独立的流体动力轴承单元和密封件
    • US5558445A
    • 1996-09-24
    • US363566
    • 1994-12-22
    • Shuo-Hao ChenYan ZangMichael R. Hatch
    • Shuo-Hao ChenYan ZangMichael R. Hatch
    • F16C17/10F16C33/10F16C33/74G11B5/52F16C32/06
    • F16C33/107F16C17/107F16C33/10F16C33/103F16C33/745
    • A self-contained hydrodynamic bearing unit includes a shaft and a shaft housing defining an opening for receiving the shaft for relative rotation. The shaft and bearing define at least one radial hydrodynamic bearing and an annular thrust bearing, formed as a disk portion extending radially outward of a main cylindrical surface of the shaft which cooperates with an adjacent annular face of the shaft housing. A gap between an outer cylindrical wall of the thrust bearing disk portion and an adjacently facing cylindrical surface of the shaft housing provides a primary annular capillary seal segment. An annular bushing ring extends from the housing radially inwardly to enclose the thrust bearing disk, and cooperates with an adjacent outer face of the thrust bearing disk to provide a secondary containment capillary seal segment. Normally, lubricating liquid is in the bearing unit at the radial hydrodynamic bearing, at the hydrodynamic thrust bearing and in the primary annular capillary seal segment. However, if liquid overflows from, or extends beyond the primary seal segment as by thermal expansion, it is contained in the secondary seal segment and urged to return by centrifugal force to the primary seal segment. A tertiary containment seal may also be provided to prevent escape of liquid to the external ambient.
    • 独立的流体动力轴承单元包括轴和轴壳体,该轴壳体限定用于接收用于相对旋转的轴的开口。 轴和轴承限定至少一个径向流体动力轴承和环形推力轴承,其形成为与轴壳体的相邻环形面协作的轴的主圆柱形表面的径向外侧延伸的盘形部分。 推力轴承盘部分的外圆柱形壁与轴壳体相邻的圆柱形表面之间的间隙提供了一个初级的环形毛细管密封段。 环形衬套环从壳体径向向内延伸以包围止推轴承盘,并且与推力轴承盘的相邻外表面配合以提供第二容纳毛细管密封段。 通常,润滑液体在径向流体动力轴承,流体动力推力轴承和初级环形毛细管密封段中的轴承单元中。 然而,如果液体如通过热膨胀从第一密封段溢出或延伸超过主密封段,则其被包含在次级密封段中并且被迫通过离心力返回到主密封段。 还可以提供三级密封件以防止液体逸出到外部环境中。
    • 2. 发明授权
    • Hydrodynamic bearing unit
    • 流体动力轴承单元
    • US5876124A
    • 1999-03-02
    • US638025
    • 1996-04-26
    • Yan ZangMichael R. HatchShinichi Minakuchi
    • Yan ZangMichael R. HatchShinichi Minakuchi
    • F16C17/10F16C33/10F16C33/74G11B19/20
    • F16C33/103F16C33/745G11B19/2009F16C2370/12
    • A self-contained hydrodynamic bearing unit with improved sealing and performance is disclosed. Centrifugal capillary seals are angularly defined between an outwardly tapered outer surface of a top screw and an inwardly tapered inner surface of an annular clamp ring at the top of the bearing unit as well as between an outwardly tapered outer surface of a seal plate and an inwardly tapered inner surface of an annular clamp ring at the bottom of the bearing unit. During operation, bearing lubricant is pumped away from the seal opening and toward the bearings by centrifugal force at the seals, providing dynamic sealing. When the bearing unit is not rotating, capillary forces retain the lubricant within the seal, preventing the lubricant from leaking. The tapered configuration of the seals also shortens the vertical seal length for a given effective seal length, thereby maximizing the journal bearing length/span and improving dynamic performance of the bearing unit.
    • 公开了具有改进的密封和性能的独立的流体动力轴承单元。 离心毛细管密封件在顶部螺钉的向外锥形外表面和位于轴承单元顶部的环形夹紧环的向内锥形内表面之间以及在密封板的向外锥形外表面和内侧 位于轴承单元底部的环形夹紧环的锥形内表面。 在运行过程中,轴承润滑剂通过离心力在密封件处从密封开口向轴承泵送,从而提供动态密封。 当轴承单元不旋转时,毛细作用力将润滑剂保持在密封内,防止润滑剂泄漏。 对于给定的有效密封长度,密封件的锥形构造也缩短了垂直密封长度,从而使轴颈轴承长度/跨度最大化并提高了轴承单元的动态性能。
    • 3. 发明授权
    • Hydrodynamic bearing for spindle motor having high inertial load
    • 用于主轴电机的流体动力轴承具有高惯性载荷
    • US5634724A
    • 1997-06-03
    • US519842
    • 1995-08-25
    • Yan ZangMichael R. Hatch
    • Yan ZangMichael R. Hatch
    • F16C17/10F16C33/10F16C33/74G11B19/20
    • F16C33/103F16C33/74G11B19/2009F16C2370/12
    • A self-contained hydrodynamic bearing unit includes a shaft having a threaded axial opening at one end thereof and a shaft shoulder adjacent the opening and perpendicular with a longitudinal axis of the shaft, a sleeve defining an opening for receiving the shaft for relative rotation, a pair of longitudinally spaced-apart radial hydrodynamic journal bearings defined between the shaft and the sleeve, a shaft-bolt including a threaded end region for mating with the threaded axial opening of the shaft and defining a bolt shoulder, an annular thrust plate having two parallel radial faces and adapted to fit upon the shaft-bolt for mounting between the shaft shoulder and the shaft bolt shoulder when the shaft-bolt is mated with the threaded axial opening of the shaft, the sleeve defining a radial thrust bearing surface portion extending radially outwardly at one end and positioned to confront one radial face of the thrust plate, an annular thrust bushing mounted to the sleeve and defining a radial thrust bearing surface portion confronting the other radial face of the thrust plate, the annular thrust plate defining two axial hydrodynamic thrust bearings respectively with the radial thrust bearing surface portion of the sleeve and the radial thrust bearing surface portion of the annular thrust bushing and a hydrodynamic thrust bearing lubricant reservoir between the two axial hydrodynamic thrust bearings and between a cylindrical face of the thrust plate and a facing cylindrical wall of the sleeve, and a hydrodynamic bearing lubricant in the bearing unit and at the pair of hydrodynamic journal bearings and at the two axial hydrodynamic thrust bearings and in the hydrodynamic bearing lubricant reservoir.
    • 独立的流体动力轴承单元包括:轴,其一端具有带螺纹的轴向开口;以及轴肩,邻近开口并且垂直于轴的纵向轴线;套筒限定用于容纳相对旋转的轴的开口, 限定在轴和套筒之间的一对纵向间隔开的径向流体动力轴颈轴承,包括用于与轴的螺纹轴向开口配合并限定螺栓肩部的螺纹端部区域的轴螺栓,具有两个平行的环形推力板 径向面,并且当轴螺栓与轴的螺纹轴向开口配合时,适于安装在轴螺栓上用于安装在轴肩和轴螺栓肩部之间,套筒限定径向向外延伸的径向推力轴承表面部分 在一端并且定位成面对推力板的一个径向面,安装到套筒上并限定一个的环形推力衬套 径向推力轴承表面部分面对推力板的另一个径向面,环形推力板分别限定两个轴向流体动力推力轴承,其中套筒的径向推力支承表面部分和环形推力衬套的径向推力轴承表面部分和 在两个轴向流体动力推力轴承之间以及推力板的圆柱面与套筒的相对的圆柱形壁之间的流体动力学推力轴承润滑剂储存器,以及轴承单元中的流体动力轴承润滑剂和在一对流体动力轴颈轴承 两个轴向流体动力推力轴承和流体动力轴承润滑油库。
    • 4. 发明授权
    • Hydrodynamic bearing and seal
    • 流体动力轴承和密封
    • US5423612A
    • 1995-06-13
    • US308078
    • 1994-09-16
    • Yan ZangShuhao ChenMichael R. Hatch
    • Yan ZangShuhao ChenMichael R. Hatch
    • F16C17/10F16C33/10F16C33/74G11B19/20G11B33/14F16C32/06F16C33/72
    • G11B19/2009F16C33/107F16C33/745G11B33/1473F16C2370/12
    • A hydrodynamic bearing unit includes a shaft, a sleeve rotatably disposed over the shaft and defining a plurality of spaced-apart hydrodynamic journal bearings, an annular axial thrust plate secured to the shaft to form a shaft subassembly and having a first radial surface in facing confrontation with a shoulder of the sleeve and defining a first hydrodynamic thrust bearing, a thrust bushing secured to the sleeve to form a sleeve subassembly and having a bearing surface in overlying facing engagement with a second radial surface of the annular axial thrust plate to form a second hydrodynamic thrust bearing, a seal for hydrodynamic lubricant defined within an annular Vee groove located adjacent to the shaft and having an apex converging toward the second hydrodynamic thrust bearing, a motor for rotating the sleeve subassembly relative to the shaft subassembly, and hydrodynamic lubricant within the annular Vee groove, the lubricant being retained in place by capillary force in the absence, of rotation, and by centrifugal force in the presence of relative rotation between the subassemblies. A secondary seal is also described.
    • 流体动力轴承单元包括轴,可旋转地设置在轴上并限定多个间隔开的流体动力轴颈轴承的套筒,固定到轴的环形轴向推力板,以形成轴子组件,并且具有面对面的第一径向表面 具有所述套筒的肩部并且限定第一流体动力推力轴承,固定到所述套筒以形成套筒子组件并具有与所述环形轴向推力板的第二径向表面面对接合的支承表面的推力衬套,以形成第二流体动力推力轴承 流体动力推力轴承,用于流体动力润滑剂的密封件,其限定在邻近轴并且具有朝向第二流体动力推力轴承收敛的顶点的环形V形槽内;用于使套筒子组件相对于轴子组件旋转的电动机,以及内部流体动力学润滑剂 环形V形槽,润滑剂通过毛细管力保持在适当的位置 e,旋转,以及在子组件之间存在相对旋转的情况下通过离心力。 还描述了二次密封。
    • 8. 发明授权
    • Microporation of human skin for monitoring the concentration of an
analyte
    • 用于监测分析物浓度的人皮肤的微孔
    • US5885211A
    • 1999-03-23
    • US776863
    • 1997-09-05
    • Jonathan A. EppsteinMichael R. HatchDifei Yang
    • Jonathan A. EppsteinMichael R. HatchDifei Yang
    • A61B5/00A61B10/00A61B17/00A61B17/32A61B18/20A61K41/00A61K49/22A61M37/00
    • A61B5/681A61B10/0045A61B5/14514A61B5/1486A61K41/0047A61K49/22A61M37/0092A61B17/3203A61B18/20A61B18/203A61B2017/00172A61B2017/00761A61B2017/00765A61B2018/00452A61B2018/0047A61B2562/0295A61M2037/0007
    • A method of enhancing the permeability of the skin to an analyte for diagnostic purposes or to a drug for therapeutic purposes is described utilizing microporation and optionally sonic energy and a chemical enhancer. If selected, the sonic energy may be modulated by means of frequency modulation, amplitude modulation, phase modulation, and/or combinations thereof. Microporation is accomplished by (a) ablating the stratum corneum by localized rapid heating of water such that such water is vaporized, thus eroding the cells; (b) puncturing the stratum corneum with a micro-lancet calibrated to form a micropore of up to about 1000 .mu.m in diameter; (c) ablating the stratum corneum by focusing a tightly focused beam of sonic energy onto the stratum corneum; (d) hydraulically puncturing the stratum corneum with a high pressure jet of fluid to form a micropore of up to about 1000 .mu.m in diameter, or (e) puncturing the stratum corneum with short pulses of electricity to form a micropore of up to about 1000 .mu.m in diameter. A dye with an absorption maximum matched to the wavelength of a pulsed light source can be absorbed into the stratum corneum to concentrate the energy of the pulsed light source and aid in ablation of the stratum corneum. Alternatively, a hot wire can be caused to contact the stratum corneum.
    • PCT No.PCT / US96 / 13865 Sec。 371日期:1997年9月5日 102(e)1997年9月5日PCT PCT 1996年8月29日PCT公布。 公开号WO97 / 07734 日期1997年3月6日利用微孔和任选的声能和化学增强剂描述了增强皮肤对诊断目的的分析物或用于治疗目的的药物的渗透性的方法。 如果选择,则可以通过频率调制,幅度调制,相位调制和/或其组合来调制声能。 通过(a)通过局部快速加热水来消融角质层,使得这种水被蒸发,从而侵蚀细胞来实现微孔化; (b)用经过校准的微型刺血针刺穿角质层以形成直径约达1000微米的微孔; (c)通过将紧密聚焦的声能束聚焦在角质层上来消融角质层; (d)用高压喷射流体水力刺穿角质层以形成直径达约1000μm的微孔,或(e)以短脉冲电穿刺角质层以形成高达约 直径1000亩。 具有与脉冲光源的波长匹配的吸收最大值的染料可以被吸收到角质层中以集中脉冲光源的能量并有助于消除角质层。 或者,可以使热丝接触角质层。
    • 10. 发明授权
    • Microporation of human skin for drug delivery and monitoring applications
    • 人类皮肤微量药物输送和监测应用
    • US6142939A
    • 2000-11-07
    • US208166
    • 1998-12-09
    • Jonathan A. EppsteinMichael R. HatchDifei Yang
    • Jonathan A. EppsteinMichael R. HatchDifei Yang
    • A61B5/00A61B10/00A61B17/00A61B17/32A61B18/20A61K41/00A61K49/22A61M37/00
    • A61B5/681A61B10/0045A61B5/14514A61B5/1486A61K41/0047A61K49/22A61M37/0092A61B17/3203A61B18/20A61B18/203A61B2017/00172A61B2017/00761A61B2017/00765A61B2018/00452A61B2018/0047A61B2562/0295A61M2037/0007
    • A method of enhancing the permeability of the skin to an analyte for diagnostic purposes or to a drug for therapeutic purposes is described utilizing microporation and optionally sonic energy and a chemical enhancer. If selected, the sonic energy may be modulated by means of frequency modulation, amplitude modulation, phase modulation, and/or combinations thereof. Microporation is accomplished by (a) ablating the stratum corneum by localized rapid heating of water such that such water is vaporized, thus eroding the cells; (b) puncturing the stratum corneum with a micro-lancet calibrated to form a micropore of up to about 1000 .mu.m in diameter; (c) ablating the stratum corneum by focusing a tightly focused beam of sonic energy onto the stratum corneum; (d) hydraulically puncturing the stratum corneum with a high pressure jet of fluid to form a micropore of up to about 1000 .mu.m in diameter, or (e) puncturing the stratum corneum with short pulses of electricity to form a micropore of up to about 1000 .mu.m in diameter. A dye with an absorption maximum matched to the wavelength of a pulsed light source can be absorbed into the stratum corneum to concentrate the energy of the pulsed light source and aid in ablation of the stratum corneum. Alternatively, a hot wire can be caused to contact the stratum corneum.
    • 使用微孔和任选的声能和化学增强剂来描述增强皮肤对用于诊断目的的分析物的渗透性或用于治疗目的的药物的方法。 如果选择,则可以通过频率调制,幅度调制,相位调制和/或其组合来调制声能。 通过(a)通过局部快速加热水来消融角质层,使得这种水被蒸发,从而侵蚀细胞来实现微孔化; (b)用经过校准的微型刺血针刺穿角质层以形成直径约达1000微米的微孔; (c)通过将紧密聚焦的声能束聚焦在角质层上来消融角质层; (d)用高压喷射流体水力刺穿角质层以形成直径达约1000μm的微孔,或(e)以短脉冲电穿刺角质层以形成高达约 直径1000亩。 具有与脉冲光源的波长匹配的吸收最大值的染料可以被吸收到角质层中以集中脉冲光源的能量并有助于消除角质层。 或者,可以使热丝接触角质层。