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| Number | Title | Issue Date |
| 8125740 | Disk drive actuator having a bobbin contacting a closed coil periphery at two locations A disk drive has an actuator coil that includes first and second lateral legs joined by first and second longitudinal legs to form a closed coil periphery. The first lateral leg is disposed closer to the actuator pivot bore than the second lateral leg. The first and... | 02/28/2012 |
| 8031440 | Coil support structure and magnetic disk drive A voice coil includes a stack of a plurality of layers of aligned windings held between an outer holding portion and an inner holding portion of the carriage assembly. The carriage assembly is formed integrally with the voice coil through injection molding. An outer... | 10/04/2011 |
| 7876533 | Stainless steel balancer having recess formed at a side surface, and head stack assembly with the same A balancer installed on an overmold of an head stack assembly to adjust balance of the head stack assembly is formed of stainless steel and demagnetized through a thermal treatment after the stainless steel is processed to have a balancer shape. The balancer has a r... | 01/25/2011 |
| 7848058 | Voice coil damper A voice coil for a voice coil motor of a hard disk drive comprises an inner surface of the voice coil, which bounds a central space of the voice coil. A first outer surface of the voice coil is substantially parallel to a second outer surface of the voice coil. A co... | 12/07/2010 |
| 7675714 | Stiffened voice coil for reduction of tracking errors in a disk drive The present invention is a system for stiffening a voice coil of a magnetic disk drive. One embodiment of the present invention are stressed skins that interconnect with an upper portion and a lower portion of the voice coil such that they are flush with the upper a... | 03/09/2010 |
| 7460340 | Disk drive, and actuator and head actuator assembly Embodiments of the invention improve the impact-resisting performance of a disk drive. In a head actuator assembly according to an embodiment of the invention, the difference in resonance frequency between an arm bending mode and a coil bending mode is set at a pred... | 12/02/2008 |
| 7375929 | Actuator including an actuator body with parallel support extensions and coil support tab for supporting a coil and method of making the same An actuator for a disk drive. The actuator includes an actuator body The actuator body includes a main body section defining a horizontal plane orthogonal to an axis of rotation. The actuator body further includes an actuator arm extending from the main body section... | 05/20/2008 |
| 7359159 | Actuator for hard disk drive having a reinforced structure An actuator of a hard disk drive moving a magnetic head to a predetermined position on a disk to record and read out data on and from the disk, including a suspension supporting a slider on which the magnetic head is mounted, an actuator arm having a pivot hole form... | 04/15/2008 |
| 7251108 | Dovetails for positive retention in an over-molded actuator Positive retention features are provided on an actuator of a magnetic disk drive thereby increasing the structural rigidity of the actuator in attachment of a voice coil to the actuator. The positive retention features are defined by a plurality of protrusions havin... | 07/31/2007 |
| 7227725 | Head stack assembly with locking pins for retaining flex cable A head stack assembly for a disk drive. The head stack assembly includes an actuator defining an axis of rotation. The actuator includes an actuator arm defining a longitudinal axis orthogonal to the axis of rotation. The actuator includes an actuator body formed of... | 06/05/2007 |
| 7215513 | Disk drive including a one-piece stamped actuator arm assembly and method of making same An actuator arm assembly of a disk drive is stamped from a single flat sheet of material and includes first and second actuator arm portions and one or more bendable portions integrally joining the first and second actuator arm portions. A method of making an actuat... | 05/08/2007 |
| 7206264 | Method for regulating the tracking of a scanning device and drive for the same A method is provided for regulating the tracking of a scanning device, for example, a read/write head, of a drive. A drive for storage media having a scanning device is also provided, permitting improved regulation of the positioning of the scanning device. A measur... | 04/17/2007 |
| 7165314 | Method for manufacturing a magnetic head arm assembly (HAA) A system and method for an improved magnetic head arm assembly (HAA) is disclosed. The HAA includes three principal components, a head gimbal assembly (HGA), a flexible printed circuit (FPC) assembly, and an actuator coil assembly. The design allows for HAA rigidity... | 01/23/2007 |
| 7161769 | Disk drive having an actuator arm assembly that includes stamped actuator arms A disk drive includes a disk and a head stack assembly. The head stack assembly includes an actuator arm assembly that includes first and second stamped actuator arms. The first stamped actuator arm may include a first arm portion, a first body portion and a coil-su... | 01/09/2007 |
| 7145749 | Actuator assembly including an actuator body damping assembly An actuator assembly including a body portion having at least one actuator arm extending therefrom is disclosed. The body portion includes a body damping assembly to control vibration modes of the actuator body. The damping assembly is coupled to the actuator body o... | 12/05/2006 |
| 7142394 | Method and apparatus for an improved magnetic head arm assembly A system and method for an improved magnetic head arm assembly (HAA), reducing complexity of design and difficulty of manufacture, is disclosed. ... | 11/28/2006 |
| 7092216 | Disk drives and actuator assemblies having a pair of bonded voice coil supporting arms An actuator arm assembly for a disk drive includes first and second stamped actuator arms including first and second arm portions, first and second body portions defining first and second body surfaces, and first and second coil-supporting arm portions defining firs... | 08/15/2006 |
| 7079358 | Disk drive actuator for dissipating heat therefrom A disk drive has an actuator supported for turning, and supporting magnetic heads for reading and writing data from and to a recording disk and a voice coil for driving the actuator. Plates are disposed near the voice coil so as to cover part of the voice coil. A ha... | 07/18/2006 |
| 7064932 | Head stack and actuator arm assemblies and disk drives having an actuator including an actuator arm spacer to increase actuator and suspension stiffness and to reduce the number of actuator arm resonance modes A disk drive includes a disk and a head stack assembly for reading and writing to the disk. The head stack assembly includes a body portion, a first actuator arm cantilevered from the body portion and a second actuator arm cantilevered from the body portion. A coil ... | 06/20/2006 |
| 7042681 | Dovetails for positive retention in an over-molded actuator Positive retention features are provided on an actuator of a magnetic disk drive thereby increasing the structural rigidity of the actuator in attachment of a voice coil to the actuator. The positive retention features are defined by a plurality of protrusions havin... | 05/09/2006 |
| 7038886 | Positioner for precisely moving an E-block of a disk drive A positioner (20) for a disk drive (10) that includes a magnet assembly (52), a conductor assembly (54), and a control system (22) is provided herein. The magnet assembly (52) includes a pair of magnet arrays (56A) ( | 05/02/2006 |
| 7031117 | Modular rotary actuator assembly for a rotatable media data storage device Assemblies in accordance with the present invention can access a data storage medium having one or more disks. One such assembly comprises a mounting block including a bore and spacer, an arm stack connected with the top surface of the spacer, and a bottom arm conne... | 04/18/2006 |
| 7009815 | Disk drive with spring provided in groove of voice coil holder to electrically connect voice coil with flexible printed circuit A technique of connection between VCM system wires and a FPC of a disk drive is improved in the following manner to enable miniaturization and thinning of the disk drive and reduction in cost. There is provided a disk drive comprising a disk-shaped medium for record... | 03/07/2006 |
| 6980401 | Head stack and actuator arm assemblies including a bobbin to stiffen the coil portion of an actuator of a hard disk drive and disk drives including the same A disk drive includes a disk and a head stack assembly for reading and writing to the disk. The head stack assembly includes a body portion defining a through bore that defines a pivot axis; an actuator arm cantilevered from the body portion and a head gimbal assemb... | 12/27/2005 |
| 6970330 | Magnetic disk drive with carriage having bobbin supporting annular coil connected by connection members A magnetic disk drive comprises at least one magnetic head for reading and writing information on at least one magnetic disk, a carriage supporting the magnetic head over the magnetic disk for movement of the magnetic head about a predetermined shaft, an annular coi... | 11/29/2005 |
| 6950284 | Cleating features to improve adhesive interface between an actuator tang and a tang-supporting surface of an actuator assembly of a hard disk drive A disk drive includes a disk, a latch assembly including a magnet and a head stack assembly for reading and writing to the disk. The head stack assembly includes a body portion defining a through bore that defines a pivot axis; an actuator arm cantilevered from the ... | 09/27/2005 |
| 6947260 | System and method of damping vibration on coil supports in high performance disk drives with rotary actuators A damping assembly for the actuator of high performance disk drive assembly is formed from multiple materials. The damping assembly is added to the actuator to dampen vibration that occurs during operation of the drive. The damping assembly is connected to an exteri... | 09/20/2005 |
| 6941641 | Method for mounting an arm to an actuator A method for mounting removably secured actuator arms that include head suspensions to an actuator assembly spindle. Each arm is mounted to an actuator spindle via a spacer with an annular lip with at least one detent formed into its perimeter edge. Each actuator ar... | 09/13/2005 |
| 6940698 | Actuator for use with a disk drive having a coil assembly including a bobbin to aid in heat convection from the coil of the coil assembly Disclosed is an actuator for use with a disk drive having a coil assembly including a bobbin to aid in heat convection from the coil of the coil assembly. The actuator includes a body portion for pivotally coupling to the disk drive and an actuator arm cantilevered ... | 09/06/2005 |
| 6937444 | Disk drive rotary actuator assembly having a constrained layer damper attached to a flat actuator coil A head stack assembly for a disk drive includes a rotary actuator assembly. The rotary actuator assembly includes an actuator body having a bore defining a pivot axis, an actuator arm cantilevered from the actuator body, and a coil portion cantilevered from the actu... | 08/30/2005 |
| 6937443 | System and method for a three-piece design of a magnetic head assembly A system and method for an improved magnetic head arm assembly (HAA) is disclosed. The HAA includes three principal components, a head gimbal assembly (HGA), a flexible printed circuit (FPC) assembly, and an actuator coil assembly. The design allows for HAA rigidity... | 08/30/2005 |
| 6911166 | Method of encapsulating hard disc drive and other electrical components A method for injection molding a layer of phase change material around a surface of a plurality of identical motor components or hard disc drive components which includes providing a plurality of motor components or hard disc drive components; placing a motor compon... | 06/28/2005 |
| 6879466 | Disk drive including an actuator with a constrained layer damper disposed upon an actuator body lateral surface An actuator for a disk drive. The actuator includes an actuator body defining an axis of rotation and including a body lateral surface disposed generally parallel to the axis of rotation. The actuator further includes an actuator arm extending from the actuator body... | 04/12/2005 |
| 6867950 | Cleating features to improve adhesive interface between a bobbin and a coil of an actuator coil portion of a hard disk drive A disk drive includes a disk, and a head stack assembly for reading and writing to the disk. The head stack assembly may include a body portion defining a through bore that defines a pivot axis; an actuator arm cantilevered from the body portion; a head gimbal assem... | 03/15/2005 |
| 6847506 | Actuator for use with a disk drive having a coil assembly designed to aid in heat convection from the coil of the coil assembly Disclosed is an actuator for use with a disk drive having a coil assembly designed to aid in heat convection from the coil of the coil assembly. The actuator includes a body portion for pivotally coupling to the disk drive and an actuator arm cantilevered from the b... | 01/25/2005 |
| 6847507 | Construction method and design for a magnetic head actuator mechanism A head actuator mechanism and a method of manufacture for that mechanism are disclosed. The head actuator mechanism includes a head gimbal assembly coupled to the top support face of a bearing assembly and an actuator driving mechanism coupled to the opposite suppor... | 01/25/2005 |
| 6801404 | Disk drive including a rotary actuator with thermo-conductive coil support element and coil A disk drive includes a disk drive base and a rotary actuator coupled to the disk drive base. The rotary actuator includes an actuator body including a bore defining a longitudinal axis. The rotary actuator further includes a coil portion including a coil and a supp... | 10/05/2004 |
| 6787941 | Actuator for disk device In an actuator having a coil disposed between yokes opposing to each other via a specified space, stepped portions are formed at the inner sides of two arms which support the coil, and at the stepped portion are formed through-holes whose diameter is gradually reduc... | 09/07/2004 |
| 6768614 | Positioner for precisely moving an e-block of a disk drive A positioner (20) for a disk drive (10) that includes a magnet assembly (52), a conductor assembly (54), and a control system (22) is provided herein. The magnet assembly (52) includes a pair of magnet arrays (56A) ( | 07/27/2004 |
| 6765764 | E-block with stamped and drawn actuator arm members An E-block of an actuator for use in a data handling system to support a read/write head adjacent a recording surface. The E-block is formed by providing feed stock along a planar orientation, drawing a portion of the feed stock out of plane to form an extension por... | 07/20/2004 |
