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6031685 |
Information storage systems comprising a liquid bearing maintained by adsorption isotherm
Information storage systems having a liquid bearing of at least 2 molecular layers on the surface of a rigid storage medium are provided. The liquid bearing lubricant of the subject invention has a...
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6025973 |
Construction for attaching a disk in a disk drive
A compact card type disk drive includes a housing (21) for accommodating a disk for storing data, a disk drive for rotating the disk, a head assembly for writing and reading data to and from the...
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6023114 |
Spindle motor and rotating shaft supporting device for spindle motor
Bearing 1 comprises a porous bearing body 1a having a bearing surface 1b disposed to oppose an outer circumferential surface of the rotating shaft 3 via a bearing clearance 4, a lubricating oil or...
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6023140 |
Method and apparatus for detecting a rotor position in a disc-based storage media and driving same
A magnetic disc which can easily detect the pole position of a brushless DC motor at a standstill, a magnetic disc apparatus employing the magnetic disc and a motor driving method are provided. The...
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6023392 |
Hard disk drive cover having improved structural and production characteristics
A hard disk drive cover is constructed using plastic resin that is injection molded to form the cover. Increased dimensional precision is attained by using injection molded plastic methods. The...
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6021019 |
Flex circuit disc snubber
Apparatus for protecting a disc drive from damage due to non-operational mechanical shocks, the disc drive comprising a rotatable disc having an inner radius and an outer radius and a controllably...
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6018437 |
Disc drive servo writer support assembly
A servo writer support assembly supports a disc drive storage device relative to an orthogonal coordinate system comprising X, Y and Z axes during servo writing. The support assembly includes a...
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6016237 |
Shaft construction of a disk drive
A compact card type disk a drive includes a housing (21) for accommodating a disk for storing data, a disk drive for rotating the disk, head assembly for writing and reading data to and from the...
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6011670 |
Disk drive with integrated presassembled actuator and header assembly and spin motor assembly
A two and one-half inch form factor disk drive. The disk drive includes a base having a top and a bottom, and at least one storage disk. A spin motor is secured to the base and the disk is mounted...
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5995325 |
Transducer signal wire termination
A transducer signal terminator for providing electrical connections between a plurality of read/write transducer lead wires and a preamplifier includes a substrate having a plurality of layers and...
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5995322 |
Magnetic disk apparatus
In a hard disk drive, the leading end portion of a main FPC is fixed to the bearing assembly of a carriage assembly. A plurality of connection pads are formed on the leading end portion in sets...
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5995321 |
Carriage structure for disk device
In a disk device including, on a base, at least one recording disk rotated by a spindle motor, a carriage equipped with heads for executing read/write operations with the recording disk and a voice...
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5986852 |
High capacity, high performance low profile disk drive
A low profile, high capacity, high performance disk drive includes a plurality of disk surfaces mounted in parallel for simultaneous rotation about an axis. Each of a plurality of data transducer...
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5984183 |
Card reader for two kinds of data cards
The reading head having the capability of processing two different data cards of the inductive type and chip-cards provided with contact pads on their surface. The raising and lowering of...
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5986853 |
Transducer suspension system
A transducer suspension system has a transducer head, laminated member and a load beam. The laminated member is comprised of a support layer, at least two electrically insulating layers, and at...
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5982578 |
Disk drive housing with recess for circuit panel
An electrical circuit package including disk drive operation and control circuitry is formed in multiple layers, including a compliant circuitry layer coextensive with the package, and additional...
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5982580 |
Acoustic noise control in a disc drive
A noise damping system for a disc drive wherein the cover of the disc drive can be made or stamped out of a stainless steel constrained layer of viscoelastic damping material. The material of the...
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5982579 |
Magnetic disk apparatus and method and apparatus for assembling magnetic disk apparatus
An apparatus having a magnetic head assembly including a plurality of arms each arm having a magnetic head fixed to a nose portion thereof and a magnetic disk unit having a plurality of magnetic...
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5978174 |
Magnetic recording component
A magnetic memory recording component comprises a substrate adapted to support a magnetic memory storage medium coating. The substrate has at least a silicon carbide ceramic outer surface. If the...
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5969907 |
Magnetic disk drive
A magnetic disk drive comprises a plurality of disks that have a laminated arrangement with equally fixed spaces respectively and are rotatably mounted a disk driving unit that forces the disks to...
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5969910 |
Magnetic head and magnetic disk apparatus provided therewith
A magnetic head having a magnetoresistive head having a spin valve structure in which a composite magnetic layer of a rotatable magnetizing direction layer and oxide or the like is used for a lower...
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5969901 |
Gasket frame for grounding an actuator flex cable in a disc drive
A gasket for a disk drive system that seals the connector port for the actuator flex cable to the disk drive housing which is designed to also provide electrical ground contact from the disk drive...
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5968627 |
Metal foil disk for high areal density recording in environments of high mechanical shock
The invention provides exemplary magnetic recording media, and in particular, flexible metal foil disks, read/write systems having such disks, and methods for making such disks. In one exemplary...
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5966267 |
Long arm compression connector with bump header
A compression arm connector for connecting two circuit substrates in a disk drive and a method of producing the same are provided. The compression arm connector replaces the need for two vertical...
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5953183 |
Head stack assembly for a magnetic disk drive with a pass-through flex circuit cable
A magnetic disk drive with a head stack assembly having a pass-through flex circuit cable is disclosed. The pass-through flex circuit cable is mounted to a side of the head stack assembly to extend...
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5949612 |
Low friction sliding hard disk drive system
A operationally contacting hard disk drive system has reduced friction due to lower capillary adhesion between the disk surface and a transducer in a substantially continuous sliding relationship...
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5940252 |
Dual-lead flex circuit for a rotary actuator
A disk drive conducts signals between read/write heads of a rotor assembly and an electrical circuit board and supplies power to an actuator coil. The disk drive comprises a rotor assembly, a...
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5940248 |
Mechanism in disk drive apparatus for preventing insertion of a disk cartridge when the shutter disk cartridge is closed
A first and second rotary members are supported on a holder 3 secured to a main chassis of disk drive apparatus. The first rotary member includes a detecting portion. The second rotary member...
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5936798 |
Cover for a disk drive assembly
A cover for a disk drive is provided. The cover comprises a body portion having a relative upper surface and relative inner surface. The upper surface defines a plurality of depressions and a...
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5930072 |
Head-disk assembly for reducing noise coupled into magnetoresistive head preamplifiers
A head-disk assembly contains an actuator that includes magnetoresistive heads and a preamplifier. The preamplifier is grounded to the actuator, and the actuator is grounded to a baseplate...
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5930071 |
Disk drive assembly with vibration dampening pivot assembly
A disk drive having vibration dampening elements and a method for dampening vibrations in disk drives. The disk drive includes a pivot assembly rotatably supporting an actuator assembly and a motor...
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5926347 |
Magnetic disk drive provided with means for pressing head against disk
A magnetic disk apparatus includes a magnetic disk accommodated for rotation in a housing, a spindle mechanism for driving the magnetic disk to rotate, a magnetic head for writing and reading out...
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5917676 |
Disc drive vibration reduction device
A vibration control device for controlling vibration of a disc drive supported in a compartment of a mass storage array. Disc drives stored in a compartment of a mass storage array may move within...
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5914836 |
Cantilevered support for the magnetic circuit of a disc drive voice coil motor
A support assembly for supporting a magnetic circuit of a disc drive voice coil motor, the support assembly suppressing the excitation of mechanical resonances in the drive. The disc drive includes...
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5912783 |
Magnetic recording and reproducing apparatus having ring-type magnetic head with metallic soft magnetic films of differing thicknesses
In a magnetic recording and reproduction apparatus wherein signals are recorded with a ring-type magnetic head to a magnetic recording medium having axis of easy magnetization oblique with respect...
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5910862 |
Magnetic disk apparatus
Disclosed is a magnetic disk apparatus constructed to reduce a track positional deviation of a magnetic head. This magnetic disk apparatus includes a rotary mechanism for rotating the magnetic disk...
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5909337 |
Magnetic recording device
A magnetic recording device having (a) a housing, (b) a disk positioned in the housing or a motor, (c) a motor associated with the disk operable for rotating the disk at a selected rotational...
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5909338 |
Magnetic disk drive having a Z-shaped grounding portion in the flex circuit cable
A magnetic disk drive includes a base which supports a head stack assembly having a coil portion, a flex circuit cable having a grounding portion, and a flex clamp. The disk drive further includes...
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5907452 |
Apparatus and method to dampen flex cable vibration to disk drive actuator
A method and apparatus for damping actuator flex cable vibrations in a disk drive during actuator seek operations to improve disk drive performance. The actuator flex cable loop includes a damping...
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5901012 |
Magnetic recording and reproduction apparatus ring-type magnetic head for recording signals to recording medium having oblique axis of easy magnetization
In a magnetic recording and reproduction apparatus wherein signals are recorded with a ring-type magnetic head to a magnetic recording medium having axis of easy magnetization oblique with respect...
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5897931 |
Magnetic disk with boron carbide overcoat layer
A significantly thinner boron carbide overcoat layer is provided for a magnetic disk which has the same durability as thicker prior art overcoat layers for protecting an underlying magnetic layer....
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5898537 |
Storage device having an improved housing structure
The present invention relates to a storage device in which information is written and read using a head movable relative to a rotating disk medium encased in a housing. The housing has a base and a...
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5898660 |
Removable disk drive having shutter opening/closing mechanism
It is an object of the present invention to provide a shutter opening/closing mechanism for preventing dust from being introduced into a removable disk drive. The shutter opening/closing mechanism...
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5887336 |
Method of preliminarily smoothing a magnetic disk drive head during manufacturing
A magnetic disk drive having at least a contact magnetic head and at least a magnetic disk including a recording area and an abrasion promoting area is preliminarily operated after the magnetic...
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5881454 |
Method of making single-sided electronic connector
A single-sided electronic connector for assembly to a printed circuit board assembly (PCBA) includes a connector housing having a pin supporting wall extending the width thereof, a plurality of...
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5882532 |
Fabrication of single-crystal silicon structures using sacrificial-layer wafer bonding
A thin micromechanical device is fabricated in a way that is mechanically compatible with wafer handling for conventional-thickness wafers. A removable bonding layer bonds a fabrication wafer to a...
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5883757 |
Disk drive system having data storage and conductor protecting features
A computer system providing for quick removal and quick and simple installation of a disk drive unit into the system. A latching and positioning arrangement provides releasable support for the disk...
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5880904 |
Disk drive having a thickness equal to an IC memory card
A compact card type disk drive includes a housing (21) for accommodating a disk for storing data, disk drive for rotating the disk, a head assembly for writing and reading data to and from the disk...
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5879783 |
Low noise magnetic recording medium and method of manufacturing
A magnetic recording medium exhibiting low medium noise is formed by depositing a seed layer on a glass or a glass-ceramic substrate and oxidizing the deposited seed layer, under controlled...
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5875068 |
Magnetic recording/reproducing device with retaining structure for engaging a top cover and bottom cover
A magnetic recording/reproducing device including a top cover having a plurality of leg portions 1e with cutouts that project from each side face of the top cover such that the location of a leg...
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