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| Number | Title | Issue Date |
| 7646563 | Recording disk cartridge having a plurality of flexible recording disk media A recording disk cartridge includes a plurality of flexible recording disk media, a rotational member, and a cartridge case. The rotational member holds the recording disk media so that the recording disk media simultaneously rotate. The cartridge case provides a ro... | 01/12/2010 |
| 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 |
| 7342747 | Recording disk cartridge A recording disk cartridge includes a plurality of flexible recording disk media integrally rotatably housed within a cartridge case including: a lower plate for configuring a lower wall; at least one inner plate partitioning the recording disk media; and an upper p... | 03/11/2008 |
| 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 |
| 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 |
| 7133238 | Servo track writing apparatus with a head assembly shroud A servo track writing apparatus for recording servo information or patterns on a disc or discs for a data storage device is disclosed. The servo track writing apparatus includes a shroud proximate to and downstream of a cantilevered head assembly to limit DC wander ... | 11/07/2006 |
| 7064922 | Disk drive with disks having different disk stiffness, thickness and material combinations An aspect of the invention can be regarded as a disk drive that includes a disk drive base and a spindle motor hub rotatably coupled to the disk drive base. The disk drive further includes a first disk disposed about the spindle motor hub and having a first disk sti... | 06/20/2006 |
| 7057852 | Disk drive including surface coated disk clamp screws with reduced coefficient of friction for mitigating disk clamp movement An aspect of the invention can be regarded as a disk drive that includes a disk drive base, a disk including disk surface, and a spindle motor including a spindle motor hub including a clamping surface with disk clamp holes. The disk drive includes a disk clamp disp... | 06/06/2006 |
| 7051871 | Optical disk containers The present invention relates generally to plastic containers which can be used for holding, organizing and securing optical disks including CDs, DVDs, mini CDs, and mini DVDs. Features of the apparatus serve to prevent dirt, dust, water, and other debris from enter... | 05/30/2006 |
| 6903903 | 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 ( | 06/07/2005 |
| 6678113 | Device and method for monitoring lubricant within a disk drive A device for monitoring lubricant within a disk drive includes a reservoir packet impregnated with lubricant. The reservoir packet is disposed between a first metal screen and a second metal screen such that a lubricant reservoir transducer is created. Th... | 01/13/2004 |
| 5796542 | Servo-track writer system having a plurality of engaging pins co-axially rotated with head actuator pivot axes An apparatus and method useful in a servo-track writer (STW) system for simultaneous servowriting of tracks on disk surfaces in a plurality of disk drive head assemblies (HDAs). The STW system includes a motor disposed to turn a drive shaft on a shaft axi... | 08/18/1998 |
| 5550687 | Magnetic disk drive capable of reducing distortions of disks A magnetic disk drive has a top spacer made of ceramic having a high Young's modulus, and a cylindrical clamp ring having a substantial thickness. The top spacer presses a stack of magnetic disks and spacers, which alternate with each other, over the same... | 08/27/1996 |
| 5377060 | Ultra slim data storage module utilizing plural flexible disks The invention provides a high-capacity, high-speed data storage device which is extremely compact, rugged and economical. In a preferred embodiment, the data storage device comprises a housing defining a sealed enclosure, a motor mounted within the housin... | 12/27/1994 |
| 5272581 | Disk-type recording medium and storage apparatus A disk-type recording medium having a circular substrate on which a recording layer is formed does not include any through hole formed in the center of rotation. Since no through hole is formed, it is possible to improve the reliability of the medium with... | 12/21/1993 |
| 5264975 | Magnetic disk storage device with the base provided by an electronic module substrate High density magnetic disk storage and semiconductor module technologies are combined to provide a disk drive using a standard multilayer ceramic substrate as the disk drive base support member to support spindle and actuator assemblies including 1 inch d... | 11/23/1993 |
| 4945432 | Magnetic disk drive with brittle disks A magnetic disk drive of the Winchester type has magnetic disks layered around the external peripheral surface of a spindle and separated mutually from one another by spacers. The substrate of the magnetic disks are made of non-metallic materials such as ... | 07/31/1990 |
| 4899237 | Divided housing for supporting magnetic disks A divided housing for supporting magnetic disk devices therein is described. The housing is separated into a shell which supports a magnetic disk pack and a magnetic head positioner, and a cover to close the opening of the shell. Spindles of the disk pack... | 02/06/1990 |
| 4894735 | Disk drive housing structure A disk drive housing structure has a rotating disk for recording information and a transducer adapted to write and read information on and from the disk. The structure further includes a positioning system having at least an arm to which the transducer is... | 01/16/1990 |
| 4835637 | Disk file with in-hub motor A compact housing 10 and disk stack subassembly for use in a data recording disk file permit the disk stack subassembly to be located entirely within and axially secured to the parallel interior walls 12, 14 of the housing 10. The disk stack subassembly i... | 05/30/1989 |
| 4823215 | Flexible disk pack module with improved Delta-pak stiffeners A flexible disk pack having a pair of floppy end plates. The end plates are adapted to assume a Delta or tapered shape when they are rotated with the record pack. Each of the end plates is formed of at least two stacks of contiguous flexible disks separat... | 04/18/1989 |
| 4714972 | Housing for a magnetic disk memory having a disk pack seat at opposite sides of the disk pack A housing for a magnetic disk memory comprising a disk pack rotatably seated at both sides and a rotational positioner is subdivided along a parting plane parallel to the axes of the disk pack and the rotational positioner, being subdivided into a tub-sha... | 12/22/1987 |
| 4713705 | Means and methods for improved transducing of flexible disk packs Improved transducing techniques and arrangements; the embodiments particularly adapted for co-action with disk drive apparatus for handling flexible disk packs, and including a partitioning shield, flexure-bar mounted transducer head under the shield, alo... | 12/15/1987 |
| 4672487 | Magnetic disk memory having a disk pack hub seated at both sides of a disk pack In a magnetic disk memory comprising a disk pack hub seated at both sides in ball bearings in a housing, the ball bearings are tensed in the actual direction relative to one another in order to achieve a play-free hub guidance. To this end, at least one h... | 06/09/1987 |
| 4646178 | Transport for open or closed flap diskettes A transport mechanism for open or closed flap diskettes is provided wherein the diskettes are singulated and withdrawn from the bottom of a stack of diskettes disposed in a hopper, transported to a work station where the diskette is duplicated and tested,... | 02/24/1987 |
| 4626941 | Method and apparatus for suppressing the evaporation of lubricant film coated on magnetic disks of a disk storage A magnetic disk storage apparatus includes an air-tight enclosure containing a drive mechanism for rotating magnetic disks coated with a lubricant material and a flying head assembly. A lubricant evaporating source is arranged inside the enclosure and exp... | 12/02/1986 |
| 4568991 | Axial partitioning of disk pack Improved disk drive equipment is illustrated, being characterized by improved partitioning means for partitioning a stack of flexible magnetic recording disks axially (end-wise).... | 02/04/1986 |
| 4402025 | Servo read/write head arm assembly for magnetic disk drive A magnetic disk drive includes a stack of magnetic disks with servo tracks on a surface of a disk which is intermediate the extremes of the stack. A servo head arm assembly has three magnetic read/write heads and a servo head thereon. A multipart magnetic... | 08/30/1983 |
| 4317150 | Foil recording disk structures A magnetic recording device employing one or more thin circular foil members which are secured to a supporting member on at least the outer edges of the foil members. In one embodiment, the foil members have central openings therein, with the central open... | 02/23/1982 |
| 4292657 | Partitionable flexible disk pack Disclosed are flexible disk packs formed of disks which have an engagement section along their periphery, this section being adapted to be engaged by associated partition wedge means; in one embodiment each disk is made identical and includes a "partition... | 09/29/1981 |
| 4291349 | Diverter means for flexible disk pack and associated method Improved transducing techniques and arrangements; the embodiments particularly adapted for co-action with disk drive apparatus for handling flexible disk packs, and including a partitioning shield, flexure-bar mounted transducer head under the shield, alo... | 09/22/1981 |
| 4262316 | Record storage apparatus For producing a transducer access opening in a stack of rotating flexible magnetic record disks, a co-rotating part axially deflects the peripheral edges of selected disks for partially axially separating same. The co-rotating part may take the form of a ... | 04/14/1981 |
| 4250529 | Method and apparatus for opening disk packs Method and apparatus for opening stacked disk memory members arranged in a pack for co-rotation and having substantial freedom of axial movement relative to one another, the opening being accomplished by engaging the disk pack with drive means having axia... | 02/10/1981 |
| 4237503 | Semi-rigid magnetic recording disk module In a preferred embodiment, a novel magnetic recording disk module is disclosed, one including a "core" of floppy disks laminated together in abutment, and, on one or both sides of this core, an array of spaced floppy disks, with only the outermost disk ad... | 12/02/1980 |
| 4208678 | Stabilized rotation of flexible disk files A stack of co-rotating flexible record storage disks is stabilized by maintaining mass flow of stabilizing air within a predetermined range. In a preferred form, mass flow is maintained by sensing both barometric and thermal changes and adjusting the mass... | 06/17/1980 |
| 4175275 | R/W Arm that prevents catastrophic failure In a flexible magnetic disk file having one or more flexible disks mounted for rotation about a centrally located axis, data on a selected disk is transduced by a magnetic head seated on a fail-safe head arm support. The head arm support is a relatively f... | 11/20/1979 |
| 4152739 | Disk pack cartridge opening and partitioning apparatus A disk pack cartridge opening and partitioning apparatus is described, particularly as adapted for inclusion in disk drive apparatus wherein each cartridge comprises a spreadable jacket containing a pack of compactly stacked, hole-encoded flexible magneti... | 05/01/1979 |
| 4152740 | Magnetic disc recorder and cassette A magnetic recorder of the flexible disc type has an improved recording device comprising a pair of thin flexible recording discs having oppositely facing magnetizable surfaces and a flexible backing disc between the recording discs extending behind essen... | 05/01/1979 |
| 4151572 | Sound recording and reproducing apparatus, and record containing case and recording medium A sound recording and reproducing apparatus for receiving a two-part cassette-type case containing a stack of records or sheets carrying mechanically or magnetically recorded information. The apparatus includes a record selecting mechanism which is operat... | 04/24/1979 |
| 4148084 | Flexible disk pack, related storage apparatus having disks with circumferential tab segments and associated partition means The disclosed embodiments are characterized by flexible disk packs and related storage apparatus characterized by disks with a circumferential tab section adapted to be engaged by associated partition wedge means; in one form each disk is identical and th... | 04/03/1979 |
