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| Number | Title | Issue Date |
| 8189288 | Rotor hub, spindle motor and hard disk drive In a method for manufacturing a rotor hub for use in a spindle motor, free-cutting stainless steel is used as a material of the rotor hub. A slug of free-cutting stainless steel is subjected to a plastic working to form a disk mounting portion and a cylindrical surf... | 05/29/2012 |
| 8189289 | Electrically conductive spacer and disk drive including the electrically conductive spacer A disk drive. The disk drive includes a motor, a hub coupled to a spindle shaft of the motor, at least two disks each having a center hole and being coupled to the hub, and a spacer having a center hole. The spacer is disposed around the hub such that the hub is dis... | 05/29/2012 |
| 8035918 | Spindle motor hub, disk pack, and hard disk drive having the same A spindle motor includes a spindle motor hub that supports one or more disks, and has a contact area reduction portion that minimizes the area of contact between the hub and a disk when the disk is mounted to the hub. The spindle motor hub includes a hub body having... | 10/11/2011 |
| 8035917 | Disk device having hub with engaging groove A disk device is presented that includes a drive motor which has a rotatable hub fitted with a recording medium and rotates the recording medium, and a disk-shaped clamper attached to the hub to hold the recording medium. The clamper has a center aperture formed on ... | 10/11/2011 |
| 7826173 | Disk spacer and hard disk drive having the same A disk spacer located on a rotator of a spindle motor to allow an additional disk to be mounted on the spindle motor, the disk spacer including a screw hole formed in a central part of the disk spacer to allow a clamping screw to pass through, a first disk pressing ... | 11/02/2010 |
| 7545601 | Magnetic disk drive with line contact Embodiments of the invention provide a magnetic disk drive promoting even higher densities, greater capacities, and further reduction in size, while relaxing component accuracy requirements. In one embodiment, the magnetic disk drive includes a magnetic disk receivi... | 06/09/2009 |
| 7538975 | Disk spacer and spindle motor assembly employing the same Provided are a disk spacer for an information storage device and a spindle motor assembly employing the disk spacer. The spindle motor assembly includes a spindle motor, one or more data storage disks mounted around the spindle motor, a disk clamp coupled to the spi... | 05/26/2009 |
| 7499244 | Disk holder for off-line servo-track writer A disk holder for an off-line servo-track writer is installed at a driving motor of the off-line servo-track writer in a state in which a plurality of disks for information storage are assembled to the disk holder. The disk holder has a flange for supporting the plu... | 03/03/2009 |
| 7477480 | Disk spacer, hard disk drive with the disk spacer, and disk balancing method using the disk spacer A disk spacer interposed between a plurality of disks that are rotatably installed on a spindle motor and has a ring shape to maintain an interval between the disks. The center of an inner circle defined by an inner circumferential surface of the disk spacer is not ... | 01/13/2009 |
| 7408739 | Hard disk drive with disk spacer and spindle motor assembly A hard disk drive (HDD) having a spindle motor, at least one data storage disk, a disk clamp fastened to the spindle motor and fixing the disk to the spindle motor, and at least one disk spacer mounted on the spindle motor to support the disk. The disk spacer includ... | 08/05/2008 |
| 7394617 | Removable disk pack hub and clamp for media servowriter The present invention provides a hub/clamp assembly for holding a disk hub in position when the hub is spin in a high speed. The hub/clamp assembly comprises of: a removable disk hub having a shaft for stacking a plurality of storage disks, a flange portion integral... | 07/01/2008 |
| 7370407 | Disc centering device A disc centering device includes a base plate, a chuck which is installed on the base plate, a hub unit which is detachably engaged to the chuck and receives discs to be stacked, disc pushers which are slidably provided outside the hub unit and include corresponding... | 05/13/2008 |
| 7372662 | Base deck with formed-in-place gaskets and impact dissipation members for a data storage device A base deck is provided and includes a base plate having a plurality of parallel surfaces and a plurality of gasket retention grooves formed. A first gasket retention groove is formed in one of the plurality of parallel surfaces that is proximate a top cover. A seco... | 05/13/2008 |
| 7369404 | Mounting apparatus for storage device A mounting apparatus for holding a storage device (10) defining apertures (122) in sidewalls (12) thereof includes a bracket (20), and a cover (30) rotatably attached to the bracket, and a pair of thumbscrews (40) securing t... | 05/06/2008 |
| 7367107 | Method for making a disk drive head stack assembly having a tapered pivot bearing A disk drive head stack assembly (66) of a configuration that facilitates the assembly thereof is disclosed. One or more head/arm assemblies (74) are mounted on a pivot bearing (118). This pivot bearing (118) includes a tapered section ( | 05/06/2008 |
| 7342746 | Disk drive including a balancing ring with a balancing weight attached to a lower end of a spindle motor hub A disk drive includes a disk drive base and a spindle motor including a spindle motor hub, a spindle motor shaft and a stator. The hub includes an upper end and a lower end. The hub is rotatably coupled to the base via the shaft for rotating the hub about an axis of... | 03/11/2008 |
| 7327531 | Two-plane balance for spindle motors In a spindle hub configured for rotation about an axis, through holes extend from a first end of the spindle hub to a second end of the spindle hub. The through holes are generally parallel to the axis. A method of achieving two-plane balance of a disc pack assembly... | 02/05/2008 |
| 7327530 | Hard disk drive having disk damper and disk protector A hard disk drive (HDD) having a disk damper and a disk protector. The HDD includes a base member, a spindle motor installed on the base member, a plurality of data storage disks mounted on the spindle motor, an actuator pivotably installed on the base member and mo... | 02/05/2008 |
| 7310200 | Resonance response separation for axially aligned rotatable discs An apparatus separating a resonance excitation response of a first disc from a resonance excitation response of second disc, the apparatus includes spindle motor with a spindle motor hub supporting the first disc, a disc spacer communicating with the first disc supp... | 12/18/2007 |
| 7310201 | Composite disk clamp assembly with lower layer fixedly coupled to upper layer of smaller diameter A composite ring for coupling a disk to a spindle includes a upper layer constructed of a material having a hardness at least as hard as a primary material of the disk. A lower layer is fixedly coupled to the upper layer and constructed of a material having similar ... | 12/18/2007 |
| 7307813 | Apparatuses and methods for improving disk pack balancing in disk drives including methods for centering disk clamps Apparatuses and methods for improving disk pack balancing are provided including methods for centering disk clamps. One method to center a clamp is to modify the construction of the disk clamp to incorporate a centering flange located on the inner diameter and near ... | 12/11/2007 |
| 7295400 | Method and apparatus for mechanically balancing the disk pack of a hard disk drive The invention includes a method making a balanced disk pack for a hard disk drive, from a disk pack including a spindle motor rigidly coupled, and aligned by at least two open screw holes, with a disk clamp. The invention includes the resulting balanced disk packs, ... | 11/13/2007 |
| 7256961 | Damped spindle motor flange for the disk pack in a hard disk drive The present invention includes a spindle motor with a dampened spindle motor flange, which includes a shallow groove on the disk face. The shallow groove includes a first rim, a trough, and a second rim. In use, the trough fills with a visco-elastic material compres... | 08/14/2007 |
| 7239476 | System, method, and apparatus for distributing stress with one or more cavities in a disk clamp for disk drive applications A disk clamp for securing data storage disks to the hub of a spindle motor in a hard disk drive has a stress distributing cavity to reduce the stress concentration on disk under the screw locations. The cavity may comprise a single, completely circumferential annula... | 07/03/2007 |
| 7234227 | Methods for centering disks in a magnetic disk assembly An apparatus and a method are provided to facilitate building of a disk stack for inclusion in a magnetic disk drive. A spindle is provided which comprises first and second disk contacts. A mechanism is provided to bias an inner diameter of a stack of plural disks t... | 06/26/2007 |
| 7224550 | Hard disk drive device and method of assembling the hard disk drive device A hard disk drive device and method for assembling such a device are provided. The hard disk drive device includes storage medium components comprising a drive motor and disk for digital data storage, which are attached to a section of a casing that encloses the dri... | 05/29/2007 |
| 7224552 | High-speed centrifugal seal for a spindle motor A robust spindle motor is provided having added shock resistance for fluid containment. In an aspect, a high-speed centrifugal capillary seal contains a fluid reservoir extending between similarly rotatable components. Fluid is recirculated through the motor and sub... | 05/29/2007 |
| 7224551 | Disk drive having apertures aligned near the inner diameter of a disk stack for allowing airflow to pass through the apertures to reduce disk flutter A disk drive includes a base, a spindle motor attached to the base, the spindle motor including a hub having hub apertures, a plurality of disks on the spindle motor and including a first and a second disk, a disk spacer between the first and second disks, and a dis... | 05/29/2007 |
| 7221537 | Plastic spacer and disk clamp assembly An assembly for coupling a disk to a spindle includes an annular spacer ring adapted to engage the disk and an annular clamp. The spacer ring is constructed at least in part of a plastic material. The clamp is constructed of a material having a modulus and stiffness... | 05/22/2007 |
| 7215509 | Pop-on disc clamp for a data storage device Steps for clamping storage media to a motor hub to form a data storage device include; securing the disc clamp with a mounting tool, which subsequently expands a central mounting aperture of the disc clamp for assembly of the disc clamp to the motor hub. Upon eschew... | 05/08/2007 |
| 7212377 | Disk drive having apertures near the ID of a disk stack for allowing airflow to pass through the apertures to reduce disk flutter A disk drive includes a disk clamp for clamping a plurality of disks to a spindle motor, and a disk spacer positioned between first and second disks. The first disk has a plurality of first disk through apertures adjacent its inner diameter. The first disk through a... | 05/01/2007 |
| 7209320 | Offset angle disc clamp A disc assembly in a disc drive includes a hub rotatable about a central axis. Pluralities of disc elements are mounted about outer periphery of the central axis of the hub. An annular shaped disc clamp is located about a first axial end of the hub, the annular shap... | 04/24/2007 |
| 7196869 | Plastic spacer and disk clamp assembly An assembly for coupling a disk to a spindle includes an annular spacer ring adapted to engage the disk and an annular clamp. The spacer ring is constructed at least in part of a plastic material. The clamp is constructed of a material having a modulus and stiffness... | 03/27/2007 |
| 7193858 | Organic electroluminescent display device in which an electromagnetic field preventing and protecting circuit is easily arranged An organic electroluminescent display device in which electromagnetic field preventing and protecting circuit, for protecting internal circuits from abnormal signals having specific characteristics generated during manufacturing process or operation, is easily arran... | 03/20/2007 |
| 7188402 | Disc centering device A disc centering device includes a base plate, a chuck which is installed on the base plate, a hub unit which is detachably engaged to the chuck and in which a plurality of discs are stacked, disc pushers which are slidably provided outside the hub unit, and include... | 03/13/2007 |
| 7181824 | Method of installing a disk clamp over a hub of a disk drive A disk clamp is provided for securing one or more data storage disks to a disk drive without the need for screws. A preloading device is also provided for installing the disk clamp and removing the disk clamp after installation. The preloading device applies a load ... | 02/27/2007 |
| 7179550 | Member for supporting magnetic disc substrates, process of producing the same, and magnetic disc device using the same A member of supporting magnetic disc substrates is provided, comprising a ceramic sinter containing a ceramic component and at least one conductive component selected from a group consisting of iron, niobium, tin zinc, copper, nickel, cobalt, and chromium, wherein t... | 02/20/2007 |
| 7179551 | Poly(arylene ether) data storage media A storage media comprises: a substrate comprising a plastic resin portion, wherein to plastic resin portion comprises poly(arylene ether) and a styrene material selected from the group consisting of polystyrene, styrenic copolymer(s), and reaction products and combi... | 02/20/2007 |
| 7177145 | Carrier device and method for a multiple disc array A carrier for supporting a circuit board and one or more data storage devices in a multiple disc array assembly. The carrier includes a partition with channel surfaces defining a tubular closed passage. The channel surfaces are adapted for circumscribing a cross sec... | 02/13/2007 |
| 7172800 | Sheet molding compound damper component, and methods for making and using the same A damper component for absorbing and dissipating vibration and/or noise resonating from a device is provided. The damper component includes a viscoelastic damper layer, and a continuous constraining layer intimately contacting and encasing the damper layer. The cons... | 02/06/2007 |
