公开(公告)号：US5016131A

公开(公告)日：1991-05-14

申请号：US343907

申请日：1989-04-26

Applicant: Charles M. Riggle ,  Peter R. Svendsen ,  John D. Read

Inventor： Charles M. Riggle ,  Peter R. Svendsen ,  John D. Read

IPC: G11B5/55

CPC classification number: G11B5/5521

Abstract: A balance-moment head positioner includes a rotor assembly which rotates about a central shaft. The rotor assembly supports at the same axial location a current-carrying coil, arms for the heads, and a counterweight such that the positioner is dynamically balanced with its center of gravity at the center of rotation. The coils are arranged with legs parallel to the central shaft on diametrically opposite sides of the assembly. In addition, the positioner includes magnets and an elongated U-shaped magnetic pole member with ends facing the coils at the same axial location at the arms. Thus the torque developed when current flows through the coil, and a reactive counter-torque developed by the rotating mass coincide, substantially eliminating all torsion in the shaft, and there is no net force on the shaft.

Abstract translation: 平衡头定位器包括围绕中心轴旋转的转子组件。 转子组件在相同的轴向位置处支撑载流线圈，用于头部的臂和配重，使得定位器在其旋转中心处以其重心动态平衡。 线圈布置成与组件的径向相对的两侧平行于中心轴的腿部布置。 此外，定位器包括磁体和细长的U形磁极构件，其端部在臂的相同轴向位置处面对线圈。 因此，当电流流过线圈时产生的转矩和由旋转质量产生的无功反转扭矩基本上消除了轴中的所有扭矩，并且在轴上没有净力。

公开(公告)号：US5134532A

公开(公告)日：1992-07-28

申请号：US607768

申请日：1990-10-30

Applicant: Peter R. Svendsen ,  Charles M. Riggle

Inventor： Peter R. Svendsen ,  Charles M. Riggle

IPC: G11B5/55

CPC classification number: G11B5/5521

Abstract: A disk drive system which has a plurality of disks and a plurality of transducing head positioning across. The arms are mounted about common shaft for independent notation to desired radial position on the disk.

Abstract translation: 一种磁盘驱动器系统，其具有多个盘和跨越的多个换能头。 臂围绕公共轴安装，用于独立符号到盘上期望的径向位置。

公开(公告)号：US06751044B1

公开(公告)日：2004-06-15

申请号：US09430614

申请日：1999-10-29

Applicant: Steven W. Meeks ,  Richard D. LeSage ,  David S. McMurtrey ,  Peter R. Svendsen ,  W. Craig Tomalty

Inventor： Steven W. Meeks ,  Richard D. LeSage ,  David S. McMurtrey ,  Peter R. Svendsen ,  W. Craig Tomalty

IPC: G11B5596

CPC classification number: G11B5/59683

Abstract: A magneto-optical clock head is disclosed. The magneto-optical clock head allows a longitudinally recorded clock track to be read from a disk surface from a position outside of a head-disk assembly (HDA). The clock track has sections of alternating magnetization which define transitions. Importantly, the magneto-optical clock head is used to sense the transitions using the transverse Kerr effect, as opposed to the longitudinal Kerr effect as used in one prior technique. In one embodiment, the magneto-optical clock head includes a light source for generating a p-polarized beam which is aligned in such a manner that it strikes the clock track. A reflected beam is then produced which has an intensity that varies based upon the direction of the magnetization of the sections of alternating magnetization of the clock track due to the transverse Kerr effect. A detector is provided to detect the intensity variations in the reflected beam and to ultimately generate a clock signal which is provided to transducers to allow them to appropriately write servo information onto their respective disk surfaces. A method for optically reading a clock signal stored within a clock track which is written onto a disk surface that is located within a head disk assembly of a disk drive is also provided.

Abstract translation: 公开了一种磁光时钟头。 磁光时钟头允许从头盘组件（HDA）外部的位置从盘表面读取纵向记录的时钟轨道。 时钟轨道具有限定过渡的交变磁化区。 重要的是，磁光时钟磁头用于使用横向克尔效应来感测转变，这与先前技术中使用的纵向克尔效应相反。 在一个实施例中，磁 - 光时钟头包括用于产生以偏振时钟轨迹的方式对准的p偏振光束的光源。 然后产生具有根据横向克尔效应的基于时钟轨道的交变磁化部分的磁化方向的变化的强度的反射光束。 提供检测器以检测反射光束中的强度变化并且最终产生提供给换能器的时钟信号，以允许它们将伺服信息适当地写入其各自的盘表面。 还提供了一种用于光学读取存储在时钟轨道内的时钟信号的方法，该时钟信号被写入位于磁盘驱动器的磁头盘组件内的磁盘表面上。

公开(公告)号：US4315288A

公开(公告)日：1982-02-09

申请号：US126021

申请日：1980-02-29

Applicant: Frank W. Bernett ,  Peter R. Svendsen

Inventor： Frank W. Bernett ,  Peter R. Svendsen

IPC: G11B23/02 ,  G11B23/03 ,  G11B17/02

CPC classification number: G11B23/021 ,  G11B23/0323

Abstract: A housing assembly (1-10) for multiple disks (1-12) used in a disk mass information storage unit in a data processing system. The housing includes fixed baffles (2-84, 86) proximate the outer disk surfaces in the housing to substantially reduce temperature differentials among the disk surfaces.

Abstract translation: 一种用于数据处理系统中的盘质量信息存储单元中的多个盘（1-12）的壳体组件（1-10）。 壳体包括靠近外壳中的外盘表面的固定挡板（2-84,86），以显着降低盘表面之间的温度差。