1429results about "Reducing physical parameters of carriers" patented technology

Provided is an apparatus that includes temperature-sensitive functional means for performing pre-configured functionality (such as video recording), mounting means for mounting the apparatus to a motor vehicle, and heating means for heating the functional means. Detection means detects at least one of: whether an automobile battery in the automobile is being charged and whether an engine block in the automobile is being heated. Control means controls the heating means and initiates a heating process upon detection by the detection means.

A disk drive is disclosed comprising a disk, a head actuated over the disk, and a spindle motor for rotating the disk. The spindle motor comprises a rotating component, a stationary component, and a first and second bearing assembly disposed between the rotating component and stationary component for rotating the rotating component about the stationary component, wherein the disk is attached to the rotating component. The bearing assemblies comprise a stationary component surface and a rotating component surface having a lubricant disposed there between. The first bearing assembly employs an anionic lubricant such that a first voltage forms between the stationary component surface and the rotating component surface when the rotating component rotates about the stationary component. The second bearing assembly employs a cationic lubricant such that a second voltage forms between the stationary component surface and the rotating component surface when the rotating component rotates about the stationary component. A polarity of the second voltage being opposite a polarity of the first voltage to thereby reduce the potential at the disk surface.

A disk drive includes a pivot-bearing cartridge configured to pivotally support the head stack assembly on the base of the drive. A tolerance ring is coupled to the pivot-bearing cartridge and includes a single sleeve defining an inner sleeve surface facing the pivot-bearing cartridge and an outer sleeve surface facing away therefrom, and a layer of dampening material disposed on the inner or outer sleeve surfaces so as to be in contact with the pivot-bearing cartridge or the bore surface of the through bore that is defined in the body portion of the head stack assembly, respectively.

In a read/write device for writing and reading a storage medium by way of a heat assisted magnetic recording/reproduction scheme, the read/write device including an elevated slider provided with a semiconductor laser, provided is a heat dissipation mechanism for dissipating heat generated in the elevated slider to an outside of a housing of the read/write device. Further, the storage medium has a second heatsink layer formed of an Al film having a thickness of 50 μm, a backing layer, a heat barrier layer, a first heatsink layer, a magnetic recording layer, and a protection film on a glass substrate. With this arrangement, in a read/write device which performs a heat assisted magnetic recording and reproduction by a semiconductor laser provided on the elevated slider, the occurrence of malfunction due to temperature rises in the storage medium is prevented.

A mounting apparatus for securing a data storage device (10) defining a number of fixing apertures (101) includes a bracket assembly (20), and a number of resilient gaskets (30). The bracket assembly comprises a first bracket (210), and a second bracket (220). The first bracket comprises a bottom panel (211), and a side panel (212). The second bracket includes a vertical plate (222) secured to the bottom panel of the first bracket. A number of positioning strips (204) some with a tab (206) extend perpendicularly from the bracket assembly to position the resilient gaskets respectively. The vertical plate is resiliently and outwardly moved to sandwich the data storage device in the bracket assembly. The data storage device is secured with the tabs engaging with the fixing apertures thereof.

A disk drive with improved shrouding is disclosed. The disk drive comprises a disk, a spindle motor for rotating the disk, a head, an actuator arm for actuating the head radially over the disk, a base, and a cover attached to the base to form a head disk assembly chamber. The cover comprises an inner surface and an outer surface, and a shroud extending axially from the inner surface into the head disk assembly chamber substantially enveloping the periphery of the disk, including at least part of the periphery coextensive with the actuator arm, to provide radial shrouding of the disk.

A disk drive includes an enclosure, a rotatable disk and an actuator arm, and also includes a plurality of arcuate channels. Airflow is created within the enclosure when the disk rotates. The plurality of arcuate channels facing the disk to decrease the turbulence of the airflow with respect to the actuator arm. The arcuate channels are formed on at least one portion of the enclosure.

A disk drive test apparatus has a plurality of bays each for receiving a respective disk drive to be tested. A plurality of card slots are provided each for receiving a test card via which a disk drive can be tested. Each of the test cards is either an environment test card or an interface test card. The card slots and the test cards are arranged such that each card slot (6) can selectively receive an environment test card or an interface test card. Other arrangements for disk drive test apparatus or disk drive mounting apparatus are disclosed.

Disclosed is a continuous separator plate for use with a disk drive. The continuous separator plate includes a substantially circular continuous outer circumference and a substantially circular continuous inner circumference. A continuous radial portion may be defined between the substantially circular continuous outer and inner circumferences. The continuous radial portion is to be disposed between at least one disk of the disk drive and either the cover or the base of the disk drive, respectively. Further, the continuous radial portion includes a disk side that faces the at least one disk and an opposite side that faces either the cover or the base, respectively. The continuous separator plate further includes a head stack assembly (HSA) accommodation section to accommodate an HSA.

An energy dissipative element (24) protects hard disk drives (22, 72, 92) from shocks and vibrations. A closed elastic envelope (48) houses a body of open cell foam (54), a volume of viscous liquid (56), and a compressible gas (64). Under compression or expansion of the foam (54), viscous liquid (56) flows through cell orifices and thereby dissipates energy resulting from external force applied against the elastic wall (48). The energy dissipative elements (24) are applied between a disk drive housing (22) and an outer case (26) to create a ruggedized portable disk drive module (20).

A sealed Hard Disk Drive filled with an inert gas mixture of air, helium, and/or nitrogen provides a wireless data encrypted interface to facilitate data and control transfer with a host system. The wireless interface additionally allows power transfer through Radio Frequency (RF) propagation or electromagnetic induction. Extended measures for vibration, shock, and temperature control are made possible through the use of the wireless interface. Immersion of the HDD into a viscous gel, or other damping material, provides vibration and shock control, while heating/cooling coils provide temperature control.

A disk drive including a head disk assembly in communication with a printed circuit board assembly, and further includes a disk drive base and a disk drive cover assembly collectively housing a head stack assembly and a data storage disk mounted on a spindle motor assembly for rotating the storage disk. The disk drive cover assembly further includes first and second substantially-planar rigid members having major surfaces, a compressible member of a foam composition placed in between the major surfaces wherein the compressible member is characterized by an unconstrained thickness d1, and wherein the major surfaces and the compressible member are fixed in a stacked relationship to compress the compressible member to a thickness less than d1. The head disk assembly further includes structure for fixing the disk drive cover assembly to the head stack assembly and the spindle motor assembly.

A disk drive that includes a head disk assembly (HDA) having a disk drive base, and a printed circuit board assembly (PCBA) in communication with the HDA. The invention further includes an acoustic damping assembly placed between the disk drive base and the PCBA. The acoustic damping assembly includes first and second acoustic absorption layers having major surfaces, an acoustic barrier layer placed in between the major surfaces, and the major surfaces and the acoustic barrier layer are fixed in a stacked relationship.

The present invention relates to a system and method for permanently and generally instantaneously destroying at least the data contained on magnetic data storage media upon the occurrence of certain events. Unauthorized access to data stored on magnetic media is prevented by destruction of the media with a reactant chemical. This approach may be initiated as a response to tampering or intentionally by using any one of several triggering interfaces described herein. Destruction of the media is quick and permanent, rendering the data unrecoverable even to aggressive recovery procedures.

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 upper portion and a lower portion. The hub is concentrically position about the shaft such that the inner surface extends along a direction of a longitudinal axis defined by the hub. The bearing is positioned between the hub and the shaft. The back iron is secured to the hub such that the upper portion abuts the inner surface, whereas the lower portion is spaced-apart radially from the inner surface, thereby forming a single gap between the back iron and the hub. Finally, the magnet is attached to the back iron such that an axial length of the magnet is substantially coextensive with an axial length of the back iron.