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| Number | Title | Issue Date |
| 8149535 | Magnetic and encapsulation contamination control for disk drives A disk device with disk contamination control having a spindle for rotating at least one disk. A spindle hub located on the spindle. A disk clamp for clamping the at least one disk on the hub. A magnetic clamp seal magnetically and removably attached to the disk cla... | 04/03/2012 |
| 8094410 | Spindle motor with flange land portion for ensuring flatness of recording disc A spindle motor rotatably drives recording discs, and includes a base plate, a stator, a rotor hub, a yoke, a rotor magnet, and a hydrodynamic bearing. The hub includes a disc support cylindrical portion for supporting the recording discs in the radial direction, an... | 01/10/2012 |
| 7936535 | Data storage disc carriers A data storage disc carrier (1) for carrying discs (10). The carrier includes an axial clamping mechanism which incorporates a three legged resilient clamping member (7) that can flees between release and clamping positions to allow easy loading... | 05/03/2011 |
| 7933093 | Spindle motor, and recording and reproducing apparatus equipped with the same The spindle motor comprises a shaft, a rotor, and a medium-carrying surface. The rotor is disposed on the outer peripheral side of the shaft, and rotates about the shaft. The medium-carrying surface is disposed on the rotor, and carries a circular-disk-form recordin... | 04/26/2011 |
| 7872830 | Magnetic medium stack assembly for a data storage and retrieval system A magnetic medium stack assembly includes a hub, a magnetic medium, and a clamp fixing the magnetic medium to the hub. The hub and clamp include engaging flange members that enable the hub and clamp to lock together without the use of external hardware or an adhesiv... | 01/18/2011 |
| 7855852 | Clamping system for a data storage device A clamping system includes a stack of storage media discs that includes an annular outer disc surface. A clamp includes a clamp surface that faces the outer disc surface. A ring is disposed between the clamp surface and the outer disc surface. The ring has a crested... | 12/21/2010 |
| 7796358 | Method and apparatus for eliminating spike noise in a soft magnetic underlayer A system for reducing spike noise in a perpendicular recording medium having a soft underlayer is provided. The system radially biases the soft underlayer to substantially eliminate domain walls therein. In a first embodiment of the system, a permanent magnetic bias... | 09/14/2010 |
| 7787214 | Disk device A disk apparatus includes a hub having a disk inserting portion having a cylindrical plane in the outer part of one end and a disk receiving portion having a flat part and being pivotably supported, a head having an inner hole through which the disk inserting portio... | 08/31/2010 |
| 7773339 | Method and apparatus for a disk clamp used in a hard disk drive that reduces mechanical deformation on at least one disk from tightened screws through the disk clamp Disk clamp including a disk clamp base and a disk clamp platform. Disk pack including at least one disk coupled between disk clamp and spindle motor. Hard disk drive including disk pack mounted on disk base. Manufacturing methods for disk clamp base, disk clamp plat... | 08/10/2010 |
| 7715146 | Self-centering clamp An apparatus and associated method for clamping an article to a rotatable motor hub. A clamp has a web portion and a plurality of protuberant members extending away from the web portion. Distal ends of the protuberant members are radially disposable within a concent... | 05/11/2010 |
| 7663837 | Rotor blade and hard disk drive having the same A rotor blade and an HDD (hard disk drive) having the same, wherein the rotor blade is mounted together with a disk-shaped data storing medium on a spindle motor of the HDD to rotate coaxially with the disk-shaped data storing medium. The rotor blade includes a plur... | 02/16/2010 |
| 7630171 | Hard disk drive having a balance weight to compensate for an imbalance in the disk stack assembly A hard disk drive comprising balance weight integrally coupled to a clamp is provided. The hard disk drive comprises a disk stack assembly comprising a disk, a spindle motor comprising a rotational shaft and a spindle motor hub adapted to support the disk, and a cla... | 12/08/2009 |
| 7602583 | Disc clamping device and disc drive having the same A clamping device that fixes a disc onto a spindle motor that rotates the disc includes a clamp ring that is layered on the disc, and a screw that fixes the clamp ring onto the spindle motor, and has a seating surface that inclines relative to a plane perpendicular ... | 10/13/2009 |
| 7589935 | Disk clamping apparatus for hard disk drive and hard disk drive with the same A disk clamping apparatus and method for securing a data storage disk to a spindle motor of a hard disk drive. The disk clamping apparatus includes a flange formed on an outer periphery of a hub of the spindle motor and a clamp. The clamp is provided with a central ... | 09/15/2009 |
| 7573674 | Storage disk having increased damping characteristics in a disk drive A disk drive includes a drive housing and a storage disk rotatably coupled to the drive housing. In one embodiment, the storage disk includes a first substrate, a spaced-apart second substrate, a damping layer and a rigid substrate spacer. The first substrate is for... | 08/11/2009 |
| 7561376 | Servo track writer and a chuck thereof A servo track writer and a chuck thereof which are capable of maintaining a central axis of a disk hub to be aligned with a rotating axis of a spindle motor adapted to rotate the disk hub, thereby preventing disks mounted on the disk hub from fluctuating. The servo ... | 07/14/2009 |
| 7561377 | Disk drive disk clamping via a hub flange, a clamp, and an O-ring Embodiments of the invention provide a small, thin, yet reliable magnetic disk drive. In one embodiment, a magnetic disk drive comprises: a motor hub including a disk support portion and a flange portion, the disk support portion supporting a magnetic disk thereon, ... | 07/14/2009 |
| 7511919 | Magnetic disk apparatus A magnetic disk apparatus capable of reducing deformation of a magnetic disk is disclosed. The magnetic disk apparatus comprises a magnetic disk on which data is recorded while the disk is driven, a hub around which the magnetic disk is supported from an under side ... | 03/31/2009 |
| 7511920 | Hard disk and spindle motor assembly A spindle motor assembly includes a spindle motor having a shaft and a hub that rotates on the shaft, and a hard disk having a data storage medium mounted in the form of a whole disk, and a fastener attached to the center of a bottom surface of the disk-shaped data ... | 03/31/2009 |
| 7446973 | Disk and clamp assembly A clamp includes a disk and a clamp engaging the disk, wherein the clamp has protrusions that bite into a surface of the disk. A disk and clamp assembly includes a disk having receiving areas formed therein, and a clamp engaging the disk, where the clamp has protrus... | 11/04/2008 |
| 7436626 | Clamp assembly for a data storage device with a lubricant trap to prevent lubricant migration from mounting screws An embodiment of the invention clamp assembly for a disk which includes a cavity for trapping the excess lubricant which migrates from the load bearing threads of the screws that hold the assembly in place. In a preferred embodiment a flexible structure, called a sc... | 10/14/2008 |
| 7391139 | Spindle motor and rotation apparatus A spindle motor which allows appropriate formation of communicating hole for compensating a pressure difference due to an error in working of dynamic pressure generating grooves and other components, easy formation of dynamic pressure generating grooves and readily ... | 06/24/2008 |
| 7379267 | Disc clamp with snap fit for a disc drive The invention relates to a disc clamp for mounting an information storage disc to a rotating hub of a spindle motor assembly, and a disc drive spindle hub assembly comprising said disc clamp. The disc clamp comprises an annular body portion, an inner centering porti... | 05/27/2008 |
| 7371041 | Assembly station with rotatable turret which forms and unloads a completed stack of articles Method and apparatus for forming and unloading a completed stack of articles. An assembly station includes a rotatable turret from which at least one stacker arm projects. The turret rotates to each of a number of article loading positions to sequentially load artic... | 05/13/2008 |
| 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 |
| 7363641 | Aligning device, for a disk recording medium, having a sliding portion disposed between the medium and turntable guide portion An aligning device for a disk recording medium capable of reducing eccentricity using a simple structure, without an increase in cost, is provided. An aligning member has a tapered portion that contacts with a center hole of a disk, and fits with a guide portion tha... | 04/22/2008 |
| 7349532 | Picture and video message center system A message originator sends a picture or video message to a message center along with caller identifying information. The message is stored in a memory and transmitted to a wireless picture phone, PDA or portable computing device, or stored at the message center in a... | 03/25/2008 |
| 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 |
| 7340750 | Transmission assembly with a lock gate structure for an optical disc device for preventing pieces of an optical disc from escaping the optical disc device An optical disc device includes a budging mechanism, a transmission assembly, a disc holding down plate, and a lock gate structure. The budging mechanism is moved by mechanically interfering with the optical disc entering the working area of the optical disc device ... | 03/04/2008 |
| 7334243 | Vane integration into motor hub to enhance CD cooling The present invention relates to the cooling of electronic components such as CD or DVD players and recorders and the disc or discs within. Specifically, the present invention relates to the internal cooling of a disc playing or recording device and the disc or disc... | 02/19/2008 |
| 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 |
| 7310416 | Method and apparatus for improved personal communication devices and systems A system for adding or updating contact data in a wireless communication device, cellular telephone, pager or personal digital assistant (PDA) is shown. Contact data associated with actual or potential communicants may be entered into a database in the wireless comm... | 12/18/2007 |
| 7305076 | Method and apparatus for improved paging receiver and system A wireless information communication system and method, such as a paging network, that provides caller identification information transmitted from the public switched telephone network to a pager, PDA (Personal Digital Assistant), a portable computing device, or per... | 12/04/2007 |
| 7301776 | Light-weight flash hard drive with plastic frame A light-weight flash hard drive includes a printed circuit board assembly (PCBA) mounted in a housing formed by a plastic frame and a pair of metal panels that are mounted on the plastic frame over the PCBA. The PCBA includes a PC board and a plug connector that is ... | 11/27/2007 |
| 7295002 | Vacuum chuck spinstand for testing magnetic heads and disks A spinstand having a vacuum chuck clamping mechanism for securing magnetic discs includes a cap (9) and a base (10). A disk-to-be-clamped is held between the cap (9) and the base (10). Vacuum, applied through a port (4) in a mounti... | 11/13/2007 |
| 7286658 | Method and apparatus for improved personal communication devices and systems A method for use in a wireless communication device, cellular telephone, pager or personal digital assistant (PDA) is shown in which Caller ID data originating from the public switched telephone network or other caller identifying data is received in a paging signal... | 10/23/2007 |
| 7286323 | Disk cartridge including multiple flexible disks, plural partitioning plates, and a shutter A recording disk cartridge is provided which includes a plurality of flexible recording disk media stacked inside a cartridge case so as to rotate integrally. The cartridge case includes a lower plate for constructing a lower wall parallel to the plurality of record... | 10/23/2007 |
| 7276826 | Spindle motor and disk drive device A simple construction causes a spindle motor rotor to be eccentric in a pickup moving direction and improves axial run-out caused by clearance between a rotating shaft and a bearing. A magnetic cap is attached to an end of a bearing of a spindle motor so as to cover... | 10/02/2007 |
| 7278150 | Disc-chucking mechanism having contractable/expandable O-ring for fixing disc A chucking mechanism which reliably attaches and detaches a disc with high precision. The chucking mechanism includes a shaft for supporting the disc and having a tapered recess, a tapered cone adapted to fit in the tapered recess, and a piston for moving a rod, att... | 10/02/2007 |
| 7272837 | Disk tray for disk drive adopting resonator and disk drive having the same A disk tray for a disk drive that slides in and out of the disk drive, one or more resonators mounted on a lower surface of the disk tray to selectively reduce noise of a predetermined frequency band. According to the present invention, the dominant resonance noise ... | 09/18/2007 |
