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5875063 |
Housing for removable mass-storage drives
In a housing for removable computer mass-storage drives, commands coming in over a computer bus direct a removable mass-storage drive to spin down. Electronics in the housing detects that a...
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5872688 |
Miniature hard disk drive having linear loud-beam suspension and thin voice coil motor
The invention is a miniature disc drive system. In the preferred embodiment of the invention, a positioner for positioning a transducer includes an actuator arm having the transducer mounted at one...
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5872680 |
Disk drive seal attached to a motor ring flange
A seal is coupled to a movable member in a disk drive for sealing an opening in a chassis over which the movable member passes. The seal comprises a first layer of foam attached to the movable...
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5872678 |
Enclosure assembly for a disk with a locational and retention cast docket structure for a connector and flexible cable connected to an electronics card
A data storage disk drive is provided with a spindle which supports at least one disk having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a...
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5864441 |
Actuator mounting apparatus for top-down data storage system assembly
An apparatus for mounting an actuator of a data storage system to a housing which uses a single mounting screw. The mounting screw is disposed within an aperture provided on the housing cover and a...
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5859745 |
Split ring mounting for disk drive spindle and actuator shafts
In a magnetic disk drive, a stationary spindle shaft and a rotary actuator shaft are mounted to opposed walls of the drive housing in precise radial and axial alignment with one of the walls,...
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5859746 |
Magnetic disk drive and flexible printed board used in such drive
A magnetic disk drive having one or more magnetic disks, one or more read/write heads each recording or reproducing information for a corresponding one of the magnetic disks, a servo head reading...
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5854721 |
Balancing device of actuator in hard disk drive
A balancing device of an actuator in a hard disk drive, for mass balancing an actuator arm which rotates about a pivot bearing. The balancing device includes an actuator arm having a mounting hole...
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RE36016 |
Disc storage device having an integrated driving system
The present invention relates to an integrated driving system for signal-processing devices, especially video devices (recorders), and other, preferably magnetic pulse recording devices, wherein...
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5851643 |
Magnetic recording media and magnetic recording read-back system which uses such media
A magnetic recording media with a magnetic film made from at least two layers stacked via a non-magnetic intermediate layer, wherein the magnetic film is formed on a structure control underlayer...
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5850317 |
Apparatus and method for near contact magnetic recording
A rotating magnetic storage device is shown wherein the transducer and media are separated during operation by a thin film of low viscosity liquid lubricant that is recirculated from a reservoir...
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5847899 |
Magnetic disk recording and reproducing apparatus
A thin film magnetic head includes a slider and thin film magnetic transducers, the slider supporting the thin film magnetic transducers. At least one of these thin film magnetic transducers is a...
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5841605 |
Caddy for cartridge and disk drive accomodating a caddy
A caddy for adapting a mini-cartridge for use in a full-sized disk drive. The mini-cartridge is designed for use in a mini disk drive, which has dimensions and other characteristics different from...
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5841606 |
Magnetic recording/reproducing device with magnetic shield between voice coil motor and flexible cable
In a magnetic recording/reproducing device, a voice coil motor includes a voice coil and a magnetic circuit for producing a magnetic field intersecting the electric current flowing through the...
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5835303 |
Microminiature hard disk drive
Disclosed is a rigid disk drive information storage device which includes a rigid disk having an outside diameter in the range of about 33-34 mm., with a housing having a footprint that includes a...
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5834084 |
Disc drive flex assembly having a low particulating circuit board
A low particulating circuit board for a disc drive flex assembly, and a method for forming the same, are disclosed. The circuit board comprises a conductive metal substrate which has sufficient...
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5831788 |
Circuit connector
A circuit connector for connecting a flex inter-connect circuit to an electronic circuit is provided herein. The flex inter-connect circuit includes a trace which is substantially enclosed within...
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5821646 |
Spindle motor with seal structure
A spindle motor comprises a stationary shaft, a rotor hub rotatably mounted by ball bearings to the stationary shaft, and annular sealing members disposed between the outer surface of the...
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5820964 |
Magnetic disk, and magnetic disk apparatus
The present invention is aimed at providing a magnetic disk and a magnetic disk apparatus both of which have a high performance lubricating film which makes continuous sliding endurance and low...
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5822152 |
Ultra-slim disk storage unit with an enclosed circuit board and a hydrodynamic bearing assembly which forms a stable meniscus
An ultra-slim disk storage unit includes a frame and a cover for engaging the frame to create first and second enclosed spaces therein. In one of the enclosed spaces a disk drive assembly is housed...
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5818667 |
Retaining apparatus for a disk drive actuator assembly electrical flex circuit
A rotating disk memory apparatus includes an actuator assembly electrical interconnect. Flex circuit tape retainers are provided to substantially reduce and ideally eliminate torque forces on the...
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RE35915 |
Apparatus for removably supporting a plurality of hot plug-connected hard disk drives
A series of hard disk drives are secured atop molded plastic support trays slidably and removably received in opposing guide channel member pairs snap-fitted into opposite side walls of a sheet...
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5815343 |
Magnetic recording medium, process for producing the same and magnetic recording system
A magnetic recording medium includes a non-magnetic substrate, and a magnetic layer provided on the non-magnetic substrate. The value of the product Br 1 δ of the residual flux density Br 1 of...
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5815342 |
Perpendicular magnetic recording/reproducing apparatus
Disclosed is a perpendicular magnetic recording/reproducing apparatus comprising perpendicular magnetic recording media and magnetic heads. Each perpendicular magnetic recording medium has a...
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5808838 |
Miniature head disc drive system voice coil with single coil and dual stationary magnets
A disc drive system having at least one hard disc having concentric tracks is supported by a hub positioned in a centrally located aperture. The disc is rotated at a constant speed by a DC motor...
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5808830 |
Architecture for 2-1/2 inch diameter single disk drive
A two and one half inch form factor disk drive has a metallic base and a metallic cover to enhance the rigidity of these components with respect to plastic components. The sealing of a controlled...
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5805378 |
Magnetic disk drive of a structure capable of being lightened in weight
A sub-printed board 40 is disposed on a main plate of a main frame 30 at a position close to a front bezel 37. A main printed board 31 is provided on the main plate at a position opposite to the...
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5805377 |
Wire carrier for disk drive
A member securing electrical conductors coupled to a read/write head in a storage device over termination pads of an electrical flex circuit. Generally, the storage device includes an actuator...
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5801899 |
Mechanical shock protection for a disc drive
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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5801505 |
Disk drive stiction release system
A disk drive including firmware for overcoming stiction and breaking free the heads of a disk drive which may adhere to the disk surface when the disk is at rest. Upon start-up of the disk drive,...
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5796539 |
Magnetic disk apparatus for a magnetic disk having projections provided thereon
In a magnetic disk apparatus including a magnetic head and a magnetic disk medium having projections provided with a constant regularity, a rotating portion for driving the rotation of the magnetic...
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5796193 |
Disk driving motor
A rotor is formed by a rotary frame 3 composed of a nonmagnetic material, a field magnet 5, a yoke 4 and an auxiliary yoke 7. A disk 12 is mounted on the rotary frame 3. An opening 4b is formed in...
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5777398 |
Internal backup power device for a computer
A back-up power device for a microcomputer which can supply back-up power to a microcomputer in the event of a power failure. The power device is installed in a standard disc or hard disc drive...
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5768049 |
Disk drive apparatus
A disk drive apparatus, by using an integrated base structure made up of a base portion and a printed circuit board, and an integrated cover structure made up of a cover casting and a printed...
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5765275 |
Method of manufacturing hard disk drive unit
The drive unit is improved in precision while the number of its manufacturing steps is a minimum. The drive unit reduces its manufacturing cost, and comprises a base plate 1 assuming a...
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5764434 |
Disk drive system
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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5760997 |
Flexible cable structure for magnetic disk drives
In a hard disk drive, power and signals are transferred through a flexible cable 42 between a carriage having a magnetic head reading magnetic information while the positioning of the magnetic head...
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5757587 |
Direct access storage device having a disk motion limiter for preventing disk data zone and spindle bearing damage
A direct access storage device (DASD) includes a plurality of motion limiters and/or a continuous motion limiter projecting from at least one of the base and cover, each motion limiter having faces...
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5754364 |
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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5752083 |
Method for receiving a first SCSI command, subsequent receiving second SCSI command and starting data transfer, reconnecting and performing data transfer for first SCSI command
A hard disk controller integrated circuit of a SCSI target-device comprises a sequencer which causes a SCSI bus to transition from a command bus phase to a data transfer bus phase during execution...
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5751508 |
Disk drive with actuator to overcome stiction
A system for overcoming force which inhibits movement of a data storage device is provided. An actuator is mounted at the perimeter of a circular data storage device and has a pivoting armature....
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5751514 |
Intelligent disk drive having spring contacts on a board assembly for connecting to exterior-facing electrical contacts coupled to a spindle motor
An intelligent hard disk drive, which includes a head disk assembly (HDA) and a printed circuit board assembly (PCBA), has a thin configuration. The HDA includes a spindle motor and the PCBA...
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5748404 |
Magnetic recording/reproducing device with chassis support structure
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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5737150 |
Magnetic disk unit with an impact force applying mechanism
A magnetic disk unit has a magnetic head-disk stickiness eliminating mechanism suitable for a small-sized, low power consumption type magnetic disk unit of a high recording density. The magnetic...
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5734519 |
Contact magnetic recording disk file with improved head assembly
A contact recording disk file uses an integrated head-suspension assembly having a head carrier with a dual-layer wear pad for contacting the disk during read and write operations. The outer wear...
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5724216 |
Removable cartridge which may be mounted to a disk drive spindle motor without relative movement between the motor and a housing of the cartridge
A removable cartridge (200) for a disk drive (30) which has a 1.8 inch form factor, has multifunction features which allow for high data storage capacity at a reduced size. The cartridge (200)...
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5717541 |
Flexible circuit assembly for disk storage system
A flexlead circuit assembly is provided for use in a rotary disk storage system and is designed so that the inherent bias force exerted by the flexible circuit on the actuator arm of the disk...
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RE35713 |
Disc recording and/or reproducing apparatus
A magnetic disc recording and/or reproducing apparatus comprises a frame, a recording/reproducing unit detachably mounted on a frame and a front panel detachably mounted on the frame and having an...
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5695864 |
Electronic device using magnetic components
In the present invention, electrons flow through a free or excitable magnet, or reflect from it, to make its magnetization respond. To accomplish this, the spin vectors of the flowing electrons are...
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5693426 |
Magnetic recording medium with B2 structured underlayer and a cobalt-based magnetic layer
The present invention provides a longitudinal magnetic recording media having a substrate, a Co or Co alloy based layer and an underlayer disposed between the substrate and the magnetic layer...
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