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    Dual gap electromagnetic actuator having a bypassing pole gap and a variable pole gap
    1.
    发明授权
    Dual gap electromagnetic actuator having a bypassing pole gap and a variable pole gap 失效
    具有旁路极间隙和可变极间隙的双间隙电磁致动器

    公开(公告)号：US5455550A

    公开(公告)日：1995-10-03

    申请号：US236948

    申请日：1994-05-02

    Applicant: Thomas W. von Alten ,  Steven M. Johnson ,  Michael O. King

    Inventor： Thomas W. von Alten ,  Steven M. Johnson ,  Michael O. King

    IPC: H01F7/14 ,  H01H51/22

    CPC classification number: H01F7/14

    Abstract: An electromagnetic actuator has a U-shaped yoke with substantially parallel legs and a keeper which is pivotally mounted for angular movement about an axis located outside of the yoke to move between two angular positions bridging the yoke legs. The proximal end of the keeper adjacent the pivot has a side face which confronts the end of one pole leg forming a variable length gap called the proximal gap, and, the distal end of the keeper has an end face which confronts a side pole face of the other leg of the yoke forming a gap, called a distal gap, the length of which changes very little between and in the two angular positions of the keeper. The torque constant over the displacement range between the two angular positions of the keeper only slightly changes. The design permits keeper movement through a large angle while minimizing operational current requirements.

    Abstract translation: 电磁致动器具有基本上平行的腿部的U形轭和可枢转地安装的保持器，用于围绕位于轭的外侧的轴线的角运动，以在桥接轭腿之间的两个角位置之间移动。 靠近枢轴的保持器的近端具有侧面，其面对一个极腿的端部，形成称为近端间隙的可变长度间隙，并且保持器的远端具有面对侧面的侧面 轭的另一条腿形成间隙，称为远端间隙，其长度在保持器的两个角位置之间和之间变化很小。 在保持器的两个角位置之间的位移范围之间的扭矩常数仅稍微改变。 该设计允许保持器运动大角度，同时最小化操作电流要求。

    Disk drive transducer suspension assembly of reduced thickness
    6.
    发明授权
    Disk drive transducer suspension assembly of reduced thickness 失效
    磁盘驱动传感器悬挂组件的厚度减小

    公开(公告)号：US5225949A

    公开(公告)日：1993-07-06

    申请号：US842701

    申请日：1992-02-26

    Applicant: Michael O. King ,  Burce J. Jackson

    Inventor： Michael O. King ,  Burce J. Jackson

    IPC: G11B21/02 ,  G11B5/48 ,  G11B21/16

    CPC classification number: G11B5/4813

    Abstract: Closer spacing of the disks in a disk stack of a disk drive is achieved by joining together the reinforcing plates, sometimes called swage plates, of pairs of load beams of the actuator arm structure to form a transducer suspension assembly of an integrated pair of load beams, each load beam having a distal end flexibly mounting a transducer The transducer of each integrated load beam pair are aligned with each other and face in opposite directions. A load beam extension at the load beam end opposite the distal end of each extends beyond the reinforcing plate. These load beam extensions in each transducer suspension assembly are spaced apart by the thickness of the two reinforcing plates and span the thickness of an actuator arm of the actuator arm structure. The load beam extensions are joined to the opposite faces of the actuator arm. The transducers fit between and confront the surfaces of adjacent axially spaced disks in the disk stack. Joining of the load beam extensions to the opposite faces of the actuator arm may be accomplished by bonding agents such as adhesives, swaging, or by welding, the latter where both the actuator arm and the load beams are of materials that may be welded together.

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