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Class 360/256.2 - Magnetic


Subclass of Class 360 - Dynamic magnetic information storage or retrieval
Definition: Subject matter utilizing magnetic attraction for latching.
No. of patents: 150
Last issue date: 04/17/2012


1        
NumberTitleIssue Date
8159787Actuator latch system of hard disk drive including magnetically levitated latch lever
An HDD includes a base, a swing arm, a VCM coil disposed on the rear end portion of the swing arm, a lower yoke and an upper yoke disposed below and above the VCM coil, at least one magnet attached to the yokes, and a latch lever levitated by the at least one magnet...
04/17/2012
8134805Silent retract of heads in a hard disk drive
A hard disk drive with an actuator arm assembly that is coupled to a head and includes a voice coil motor. The drive also includes a drive circuit that provides a drive current to the voice coil motor to move the actuator arm assembly into contact with a magnet. The...
03/13/2012
8134806Hard disk drive
A hard disk drive includes a base, an actuator arm pivotably installed on the base, and a latch device to latch the actuator arm at a parking position. The latch device includes a latch stop that protrudes from a side wall of the base and has an inclined surface, an...
03/13/2012
8111484Actuator latch mechanism and hard disk including the same
An actuator latch mechanism of a hard disk drive (HDD) includes a latch lever and a magnetic latch carried by the latch lever. The latch lever is mounted to a base of the HDD so as to be rotatable and prevents an actuator arm from rotating from a position, at which ...
02/07/2012
8081401Disk drive including an actuator latch with a cantilevered stop portion
A novel actuator latch includes a catch portion interfering with actuator rotation with the latch in a closed position. The latch includes a first stop portion that is in contact with a fixed member with the latch in the closed position. The latch includes a pusher ...
12/20/2011
8040636Hard disk drive
A hard disk drive includes a magnetic retractor situated at and integrated with the pivot holder of a head stack assembly. An actuator arm of the head stack assembly supports a read/write head, a bobbin supports a voice coil of a voice coil motor, and the actuator a...
10/18/2011
8031438Actuator latch system of hard disk drive
An actuator latch system of a hard disk drive selectively locks in place and releases a rotatable swing arm having a front end portion supporting a magnetic head and a rear end portion on which a voice coil motor (VCM) coil is disposed. The actuator latch system inc...
10/04/2011
7808745Hard disk drive having crash stopper and method of assembling the same
A hard disk drive includes a base, a head stack assembly (HSA) that is mounted to the base so as to be rotatable relative to the base, a voice coil motor (VCM) block that has an upper section and a lower section respectively disposed above and below a voice coil sup...
10/05/2010
7800864Actuator latch apparatus having protrusion insertedly coupled to counterbalance for disk drive
An actuator latch apparatus for a disk drive, having a notch positioned at a first end portion of the swing arm, a latch lever rotatably installed in a base member, a first core provided on a second end portion of the swing arm, and a second core provided at a count...
09/21/2010
7715149Disk drive including an actuator latch with a catch portion and a crash stop portion of lesser material stiffness than the catch portion
A disk drive includes an actuator rotatably coupled to a disk drive base. A fixed member is in fixed spatial relation to the base. A latch is rotatably coupled to the base. The latch includes a catch portion in contact with the actuator with the latch closed and not...
05/11/2010
7684156Disk drive apparatus
According to one embodiment of the invention, a disk drive apparatus includes a case, a disk-shaped recording medium, a drive motor, a head, a head actuator, and a latch mechanism configured to latch the head actuator and hold the head actuator at a retracted positi...
03/23/2010
7663842Actuator apparatus of a hard disk drive
An actuator apparatus used with a hard disk drive. The actuator apparatus includes a pivotable actuator arm, a magnetic head mounted onto a first end of the actuator arm, an overmold connected to a second end of the actuator arm and including a metal piece, a voice ...
02/16/2010
7660075Disk drive including an actuator latch with a pivot ball in a latch post opening and between a VCM top plate and the latch
A disk drive includes a housing including a support post extending from the housing. The support post defines a post axis. The disk drive further includes an actuator rotatably coupled to the housing. The disk drive further includes a VCM top plate physically couple...
02/09/2010
7633721Disk drive with an actuator latch having fixed, latching, and latch arm portions being a single component
A disk drive includes a disk drive base and an actuator that is rotatably coupled to the disk drive base. The actuator has an axis of rotation. The disk drive further includes a latch. The latch includes a fixed portion that is firmly coupled to the disk drive base,...
12/15/2009
7616407Disk drive apparatus
According to one embodiment, a disk drive apparatus includes a base, a recording medium, a drive motor, a head, a carriage, and a latch mechanism. The latch mechanism includes a latch member, which is supported on the base to be movable between a latch position and ...
11/10/2009
7616406Disk apparatus and magnet for magnetic circuit
A rotary type actuator comprises an actuator assembly rotatably attached to a base and supporting a head at an end thereof via an arm and supporting a coil at the other end thereof, and a magnetic circuit unit having a yoke and a magnet secured to the base. The latc...
11/10/2009
7606004Rotating disk storage device with actuator lock mechanism
Embodiments of the invention permit a magnet-based actuator lock mechanism to operate smoothly in a magnetic disk drive that uses a base made of a magnetic material. In one embodiment, the base to be used is made of a magnetic material. The actuator lock mechanism i...
10/20/2009
7602587Information storage that includes a housing and a printed board provided on the housing, a printed board including a coil that forms an electromagnet in cooperation with a magnetic member, and method for manufacturing an electromagnetic latch unit
A disc drive includes a motor that drives a disc, a slider that accesses the disc, a carriage that moves the slider, a housing that houses the disc, motor, slider, and carriage, and includes a rotating part that has an engagement part with the carriage at one end, a...
10/13/2009
7576953Disk drive latch with external coil
A latch (100) for a disk drive head positioner assembly (26) is disclosed. A latch assembly (140) is mounted on a printed circuit board (136), and is thereby disposed exteriorly of the disk drive (10′). This latch assembly (14...
08/18/2009
7535679Disk drive actuator latch apparatus having elastic damping arm
An actuator latch apparatus for a disk drive, having a notch positioned at a first end portion of the swing arm, a latch lever rotatably installed in a base member, a first core provided on a second end portion of the swing arm, and a second core provided at a count...
05/19/2009
7486482Disk drive actuator latch apparatus with solenoid coil offsetting magnetism of attraction part
An actuator latch apparatus for locking a swing arm of a disk drive is described. The apparatus includes a notch provided at an end portion of the swing arm; a latch lever rotatably installed on the base member and including a hook formed to interfere with the notch...
02/03/2009
7474510Disk drive head reset for parked head using closely spaced magnet
A disk drive includes a magnet (152) for resetting a corresponding head (138). The magnet (152) is located on or close to a load/unload ramp (140′) that is used to park the head (138), such that the magnet (152) is spaced ...
01/06/2009
7369367Disk drive voice coil motor yoke assembly having proximity latch magnet pair attracting and holding voice coil bias steel therebetween
The invention includes a yoke assembly containing a top and a bottom proximity latch magnet. The invention includes a voice coil attached to a voice coil bias steel. The crash stop includes a magnetic proximity latch created by the voice coil bias steel attracted to...
05/06/2008
7364128Methods and apparatus for support mechanism assembly
Methods and apparatus for a support mechanism are provided. The support mechanism includes an engagement pin including an engagement surface and a latch surface wherein the engagement pin is coupled to a base. The support mechanism also includes a pawl that includes...
04/29/2008
7336448Magnetic head actuator with equalized deviation
A magnetic disk device comprises a magnetic disk in which a data zone is formed. An actuator has a voice coil and a head slider carrying a magnetic head, the actuator being swung to move the magnetic head over the disk between an innermost position of the data zone ...
02/26/2008
7333328Hard disk system having a hard disk unit and a conversion unit for connection to a host device
A large capacity HDD is handled as a portable recording medium. In a state where a portable hard disk (PHD) unit is mounted on a cradle, data is written and read between the PHD unit and a host device. By having a first engagement section on the side of the PHD unit...
02/19/2008
7316024Cushion assembly for absorbing vibration of a disc drive
A cushion assembly includes a retarding member, a support member and an urging member. The retarding member has a base portion and an upper portion formed with an upper end face, and is formed with a guiding hole extending inwardly and axially from the upper end fac...
01/01/2008
7298591Rotating disk storage device with a retracting actuator head suspension assembly
Embodiments of the present invention provide a rotating disk storage device having a mechanism to reliably retract an actuator into a retraction area in the event that the power supply is suddenly interrupted. A bias chip is embedded in a coil support that supports ...
11/20/2007
7293351Apparatus for protecting and merging a head stack assembly
An apparatus for protecting and merging a head stack assembly with a disc stack of a data storage device. The head stack assembly comprises a cantilevered flexure which supports a transducer at a distal end thereof. A carrier includes a carrier support surface arran...
11/13/2007
7286327Actuator latch mechanism for hard disk drive
An actuator latch mechanism of a hard disk drive locks an actuator when the hard disk drive is not operating, and the actuator includes a swing arm rotatably installed to a base member, a VCM coil coupled to one end portion of the swing arm, and a magnet facing the ...
10/23/2007
7275303Method for making a disc drive
The upper voice coil motor magnet assembly (64a′) of a disk drive (10′) is magnetically aligned with the lower voice coil motor magnet assembly (64b′) using an alignment fixture (126). The alignment fixture (126...
10/02/2007
7277253Storage device
A storage device configured to load and unload a head against a storage medium, includes a latch mechanism configured to latch the unloaded head, a head moving mechanism configured to move the head, a measuring part configured to measure an unlatch force necessary f...
10/02/2007
7259938Actuator latch for disk drive
An actuator latch for a disk drive comprises at least one damping structure disposed at a wall within a recess of a latch body. Such a damping structure absorbs impact force between the latch body and a distal end of the actuator to minimize noise at a transducer on...
08/21/2007
7248440Single lever type actuator latch system of disk drive
An actuator latch system of a disk drive to lock an actuator having a swing arm installed at a base member, a voice coil motor coil joined to an end portion of the swing arm, and a magnet facing the voice coil motor coil, including a first and a second latch portion...
07/24/2007
7248441Disk drive actuator parking method using impact rebound crash stop with bias tab and pusher and crash stop faces
The invention includes an impact rebound crash stop pivoting about a pivot between the top and bottom yoke of an actuator magnet assembly. The impact rebound crash stop includes a latch bias tab magnetically attracted to the voice coil magnet when it is near. The in...
07/24/2007
7236331System and method to provide a ramp having a location which is transitioning from a first grade to a second grade for removing a read/write head from a media
Methods to provide a ramp to remove a read/write head connected with a suspension from a media in accordance with the present invention can comprise calculating a grade of one or more surfaces having a plurality of progressively shallower grades. A transition betwee...
06/26/2007
7203034Using eddy-currents for releasing actuator suspension assembly of rotary disk storage device
A mechanism is provided for restraining and releasing an actuator suspension assembly in a magnetic disk device which is in a retracted position. In a magnetic disk device, according to one embodiment, a magnetic disk 4a is formed of an electrically co...
04/10/2007
7203019Latch apparatus for latching an actuator arm assembly in a disk drive
A latch apparatus is configured to latch an actuator arm assembly that can position a read/write head relative to a data storage disk in a disk drive. The latch apparatus includes a latch arm, a coil, a permanent magnet, and a latch control circuit. The latch arm is...
04/10/2007
7161768Disk drive including an orthogonally disposed actuator coil and an E-shaped voice coil motor yoke for supporting a pair of voice coil magnets
A disk drive including a generally E-shaped voice coil motor yoke. The yoke includes a generally C-shaped integrally formed first yoke body, the first yoke body including a first yoke first prong and a first yoke second prong. The yoke further includes a generally C...
01/09/2007
7149058Actuator latch with variable retention force
Apparatus for latching an actuator, such as used in a data storage device. A moveable electrical coil is disposed adjacent a magnetically permeable structure. The coil is latched by magnetic flux passing across a gap extending into the structure which establishes a ...
12/12/2006
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