|
Match
|
Document |
Document Title |
|
|
RE37455 |
Axially compact direct drive for storage disk hub
An axial compact direct drive for a storage disk comprises a stator, a rotor carrying a hub for receiving storage disks and a bearing arrangement. The bearing arrangement is disposed at a radially...
|
|
|
6320291 |
Construction of motor
A motor structure includes a base, at least one bearing, a shaft, a hollow coil assembly, and an elastic ring. The base has at least two fan-shaped sheets and a lower projection. The bearing is...
|
|
|
6316853 |
Spindle motor assembly for disc drives
A novel spindle motor assembly is disclosed that utilizes a fixed shaft and places the motor rotor components on the outside wall of the spindle hub directly below its disc stack supporting flange....
|
|
|
6316855 |
Spindle motor with a special contact arrangement
The invention relates to a spindle motor with a contact arrangement which comprises a stationary base flange carrying a central spindle, a hub which is pivotably borne on the spindle by means of...
|
|
|
6316857 |
Spindle motor
A spindle motor is disclosed which allows more excellent abrasion resistance and productivity exhibited by making the thrust to be integrally formed at driving shaft and by making each of kinetic...
|
|
|
6299358 |
UV-transparent elements for hard disk drive components
Ultraviolet-transparent seals, flange, and sleeve assemblies are used in actuator pivot cartridges for hard disk drives to cure adhesive located inside the pivot housing. The assemblies are formed...
|
|
|
6295717 |
Dynamic balance measurement station
A method of automatically measuring the dynamic imbalance of a disc stack of a disc drive assembly, the disc stack conveyed to a first selected position in a balance measure assembly station where...
|
|
|
6292328 |
Both ends open fluid dynamic bearing having a journal in combination with a conical bearing
A method of creating an improved hydrodynamic fluid bearing is provided which is relatively insensitive to shock vibration changes in load and rotational speed. The hydrodynamic bearing motor in...
|
|
|
6285527 |
Disc drive having hydrodynamic labyrinth seal and magnet shield
A disc drive system includes a disc drive chassis, a magnetic storage disc, a read/write transducer adjacent to the disc for reading and writing information on the disc, and a hydrodynamic bearing...
|
|
|
6281608 |
Spindle motor and turn table assembly having structure for canceling unbalanced centrifugal force
A spindle motor includes a shaft 6 which is rotatably supported; a rotor casing 7 which is turned together with the shaft 6; and a turn table 9 which is fixedly mounted on one end portion of the...
|
|
|
6252319 |
Disk rotating mechanism
Disclosed is a disk rotating mechanism equipped with an automatic aligning mechanism in which the number of parts is reduced and in which an improvement in assembly operability and a reduction in...
|
|
|
6252322 |
Spindle motor
A spindle motor comprises a base, a stator coil connected to the base, and a sleeve-and-bearing unit connected to a central portion of the base. The sleeve-and-bearing unit has a sleeve and a...
|
|
|
6249505 |
Disk drive motor
The present invention discloses a disk drive motor comprising a rotor having an annular space formed therein coaxially with the axis of rotation, and balancing member accommodated in the annular...
|
|
|
6242826 |
Spindle motor and disc driving apparatus comprising the same
The present invention relates to a spindle motor mainly used for an apparatus for driving a disc, which can increase the capacity of recorded information and the information transmission speed...
|
|
|
6242831 |
Reduced stiction for disc drive hydrodynamic spindle motors
A reduced stiction hydrodynamic spindle motor is provided for reducing the starting torque or power of disc drive motors. The reduced stiction motor includes a low surface energy coating having a...
|
|
|
6236536 |
System and method of servo compensation for friction induced off track problem in a data storage device
Sufficient 1f runout is intentionally generated on tracks on a data storage disk to prevent 2f runout from interfering with the alignment of a read/write head with respect to the tracks. The tip of...
|
|
|
6236535 |
Spindle motor with hydrodynamic bearing
The present disclosure relates to a spindle motor having a shaft defining an axial bore that extends completely through the length of the shaft. At least a portion of the axial bore defines a fluid...
|
|
|
6215615 |
Data storage device
Provided are novel data storage devices, such as hard disk apparatuses. The devices include a clean chamber accommodating a component formed from a free cutting stainless steel. The free cutting...
|
|
|
6215616 |
Disk drive spindle motor with wire guide insert
A spindle motor for a disk drive includes a shaft, an upper bearing, a lower bearing, a stator, a hub and wire guide body. The upper bearing surrounds the shaft. The lower bearing surrounds the...
|
|
|
6211592 |
Motor for driving storage disks
A storage-disk drive motor miniaturized and made thinner by eliminating the conventional thrust plate for the rotor-hub thrust dynamic pressure-generating bearing, and by employing only one...
|
|
|
6211584 |
Magnet and a motor component having a coating with improved anticorrosion and insulation
A motor component covered with a novel electrocoating that fails to detrimentally affects magnetic memory medium provided in a hard disc or other is provided. With enhanced edge covering ratio, an...
|
|
|
6204583 |
Centerpiece structure of brush-less motor and method of manufacturing brush-less motor
A brush-less motor has a center piece, which has a flange portion fixed to a motor holder and a cylindrical portion fixed to a stator core at the outer periphery of the cylindrical portion. The...
|
|
|
6204588 |
Rotor capable of being used as a recording media
An electric motor having a pancake construction stator and rotor poles that are formed by photolithography. The stator and rotor can be formed from an amorphous material, thereby reducing grain...
|
|
|
6204996 |
Low profile spindle motor
A low-profile spindle motor for a disc drive data storage device includes a cylindrical sleeve which is used to mount the motor to a housing base using press-fitting or adhesive bonding, thus...
|
|
|
6194360 |
Magnetic recording device
The invention relates to a magnetic recording data storage device which can operate effectively at high rotational speeds. The magnetic recording device of the present invention comprises (a) a...
|
|
|
6195226 |
Disk storage device
The invention relates to a disk storage device having a direct-driving motor for a hub, which has one or two plane air gaps, whereby information storage disks fixed to a hub and located in an...
|
|
|
RE37058 |
Disk storage device having contamination seals
A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical...
|
|
|
6191914 |
Compact media drive having retractable media support
A compact media drive for use in personal computers has a media support and detector arm structure that ejects to extend external of the drive case at the insertion slot to receive corners of a...
|
|
|
6189371 |
Method for adjusting rotation balance of disk and device for the same
The present invention provides a method and apparatus to adjust the rotation balance of a disk with high accuracy and ease during manufacturing. A disk is attached to a spindle to form a disk...
|
|
|
6188155 |
Spindle motor
In a spindle motor 1, a motor frame 21 is molded from a resin. Therefore, even if an impact is applied to a motor apparatus in which this motor 1 is installed, the impact can be absorbed and hence...
|
|
|
6185067 |
Disk drive with reduced thermal expansion induced disk slip
A spindle motor for a disk drive includes a shaft, an aluminum hub, a bearing, a magnetic steel back iron, and a magnet. The hub includes an axial wall having an inner surface. The back iron has an...
|
|
|
6181512 |
Disk drive
Inertia couple (F1) generated by the agency of an angular acceleration at which a turntable (2) is accelerated after the same has started rotation and the inertial moment of a rotating body...
|
|
|
6181513 |
Spindle motor and a hard disk drive apparatus including such a motor
A spindle motor including a double row bearing apparatus 2 for supporting a rotor hub 9 rotatably on a base 1. A labyrinth seal mechanism is incorporated into the bearing apparatus. The double row...
|
|
|
6181509 |
Low sulfur outgassing free machining stainless steel disk drive components
Embodiments include a disk drive having a drive motor assembly including at least one component selected from the group consisting of a rotatable hub, disk spacer, disk clamp, backiron, lower...
|
|
|
6178618 |
Method for constructing a pivot cartridge assembly for a disc drive
The specification discloses a preferred system, apparatus, and method for constructing a pivot cartridge assembly. The preferred embodiment of the present invention involves the following steps. A...
|
|
|
6172847 |
Rotational assembly for disc drive device having small runout and reduced axial displacement
A disc drive device includes a rotational assembly which is adapted to mount a disc thereon and is rotatably driven by a motor. The rotational assembly is rotatably supported on a support assembly...
|
|
|
6166475 |
Brushless motor and magnetic recording-reproducing apparatus using the same
A brushless motor comprises a stator including substrates protruding radially with respect to a center axis and coils wound on the substrates, a rotor including a cover covering the stator, having...
|
|
|
6158112 |
Disk assembly device for adjusting the disk balance of the hard disk drive
A disk drive recording device comprises at least two platters for storing magnetic recording data and a spindle motor rotating at high speed for mounting the platters. The disk drive is assembled...
|
|
|
6160334 |
Motor for driving information medium
In a thin type flexible disk drive motor, in order to improve undesirable jittering of rotation, an inertia ring of larger diameter than that of the rotor frame is fixed immediately under the...
|
|
|
6157515 |
Texturing of herringbone air and fluid bearings
A hydrodynamic bearing having two relatively rotating, substantially complementary surfaces comprising one surface on which grooves are imposed in a pattern, with unmarked portions of the surface...
|
|
|
6154339 |
Centrifugal capillary seal for use with fluid dynamic bearings
An improved capillary seal for use with a hydrodynamic bearing is disclosed, which provides a stronger or stiffer seal for a fluid dynamic bearing motor which is open at both ends, and is used with...
|
|
|
6144124 |
Thin DC brushless motor having an air gap formed therein
A thinned DC brushless motor (50) has a base plate 52 of magnetic material, a rotatable shaft (58) supported perpendicular to the base plate, an annular hub (68) coaxially fixed on the shaft, a...
|
|
|
6144523 |
Simplified conical bearing with independent flow paths
A hydrodynamic bearing useful as a bearing cartridge or as the cartridge may be incorporated into a spindle motor or the like, where the bearing includes a stationary shaft and two independent...
|
|
|
RE36931 |
Magnetic disc storage system with hydrodynamic bearing
A magnetic disc storage system includes a base and a rotating magnetic disc having an axis of rotation. A transducing head which reads and writes information is positioned proximate the disc. The...
|
|
|
6137650 |
Spindle motor with fluid dynamic bearing having a journal bearing in combination with a conical bearing
A hydrodynamic fluid bearing useful in a bearing cartridge which cartridge may be incorporated into a spindle motor or the like, where the bearing includes a shaft, a conical bearing supported on...
|
|
|
6122143 |
Wet rigid disk drive assembly with a conical spindle bearing
The invention concerns a disk drive assembly in which one or more rotating rigid disks are enclosed in a "wet" operating environment in which a liquid lubricant is circulated from the surface of...
|
|
|
6115213 |
Bearing assembly having compact thickness, spindle motor and actuator using the same bearing assembly, and magnetic disk drive
|
|
|
6109101 |
Spindle motor rotational unbalance correction mechanism
A spindle motor rotational unbalance correction mechanism has a stand onto which the magnetic disk apparatus is placed, a mounting device for fixing the magnetic disk apparatus to the stand, and a...
|
|
|
6105240 |
Dynamic balance measurement station for a disc drive
An apparatus of automatically measuring the dynamic imbalance of a disc stack of a disc drive assembly, the disc stack conveyed to a first selected position in a balance measure assembly station...
|
|
|
6104570 |
Disc drive spindle motor having tuned stator with adhesive grooves
A disc drive spindle motor includes a central axis, a stationary member, a rotatable member which is rotatable with respect to the stationary member and a bearing interconnecting the rotatable...
|