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| Number | Title | Issue Date |
| 7023112 | Vibrating device for axially vibrating a movable member A vibrating device has an axially elongated frame, and a vibrating assembly including a hollow yoke. A magnetic driving device is provided for axially vibrating the vibrating assembly. A supporting shaft is provided for axially slidably supporting the vibrating asse... | 04/04/2006 |
| 6555043 | Method of making a carriage assembly for a disk drive This invention includes a carnage assembly for carrying read/write heads into engagement with a recording medium. The carriage assembly comprises a carriage body formed from molded plastic. The body defines a sidewall having a first open end and a second ... | 04/29/2003 |
| 6421209 | Disk drive apparatus with head arm including rigid arm base and plate spring suspension The present invention provides a disk drive apparatus for recording and/or playing back a signal onto and/or from a disk-shaped recording medium. The disk drive apparatus has a configuration comprising a head arm for supporting a magnetic head. The head a... | 07/16/2002 |
| 6356415 | Disk drive head carriage lock having solenoid within frame of lock member A head carriage lock mechanism for a magnetic disk drive has a lock member, a lifter, a link member and a solenoid. The lock member is shaped in the form of a quadrilateral frame, with arms extending perpendicularly from a front panel and a rear panel so ... | 03/12/2002 |
| 6278586 | Recording/reproducing device with read/write head carriage supporting voice coil of voice coil motor for driving the carriage assembly In a recording/reproducing device for use in recording and reproducing data on and from a recording medium while moving read/write head means relative to the recording medium in a moving direction, which comprises a carriage supporting the read/write head... | 08/21/2001 |
| 6256174 | Disk drive apparatus with a high positional precision magnetic head The present invention provides a disk drive apparatus for recording and/or playing back a signal onto and/or from a disk-shaped recording medium. The disk drive apparatus having a configuration comprising a head arm for supporting a magnetic head. The hea... | 07/03/2001 |
| 6252747 | Disk apparatus having an improved head carriage structure A disk apparatus includes a read/write head which reads information from or writes information to a recording disk. A movable head carriage supports the head thereon. The head carriage is movably supported on a guide shaft, and the guide shaft guides a mo... | 06/26/2001 |
| 6147842 | Carriage assembly with components molded to a carriage body This invention includes a carriage assembly for carrying read/write heads into engagement with a recording medium. The carriage assembly comprises a carriage body formed from molded plastic. The body defines a sidewall having a first open end and a second... | 11/14/2000 |
| 6072655 | Magnetic disk drive having a position detection unit for detecting a current position of a magnetic head In a magnetic disk drive for driving a magnetic disk inserted thereinto, a position detection unit comprises a scale and a photointerrupter. The scale is mounted on a carriage at a side opposed to a main surface of a main frame. The scale has a plurality ... | 06/06/2000 |
| 5519554 | Rack and pinion linear slide read/write head positioning device A read/write head positioning device for vertically displacing a magnetic head relative to a tape transport path of a high-performance tape path system, enabling the magnetic head to read and write magnetic data on a plurality of parallel data tracks of a... | 05/21/1996 |
| 5359590 | Disc drive device having negative pressure pad A disc drive device which comprises a negative-pressure pad for generating a negative pressure between the negative-pressure pad and a disc-shaped recording medium by the rotation of the disc-shaped recording medium and a displacement member for bringing ... | 10/25/1994 |
| 5325251 | Planar actuators using low pressure air bearings and rolling flexure bearings A low pressure air bearing and rolling flexure bearing support for relative movement of carriage actuators in a disk drive system. Air generated by the disk rotation or by a simple blower mounted on the spindle is directed through conduits in the carriage... | 06/28/1994 |
| 5148340 | Bifurcated air bearing actuator assembly for a disk drive system An actuator comprises a slotted stator which is mounted in a stator frame. The stator is connected to the frame by an attachment which allows the stator to move rotationally, axially and laterally relative to the frame without distorting the dimensions of... | 09/15/1992 |
| 5146122 | Voice coil actuator with resiliently mounted shorted turn A voice coil actuator comprising a carriage assembly and a magnet assembly includes a cylindrical shorted turn resiliently mounted in the magnet assembly. The shorted turn is thereby allowed limited movement in a direction parallel to its own axis. In thi... | 09/08/1992 |
| 5130873 | Head positioning apparatus for disc unit A head positioning apparatus for a disc unit which moves a carriage having a movable portion by driving motors constituted by coils and magnets, wherein driving power distribution of the driving motors is variable, so that the acting points of the driving... | 07/14/1992 |
| 5126905 | Head positioning apparatus In a data writing and/or reading device in which data is written and/or read out from a rotating recording medium, a head carriage upon which one or more heads are mounted is guided by first and second guide rods to move in a predetermined direction with ... | 06/30/1992 |
| 5070423 | High-performance actuator array for disk drive with unitary actuator guide means Disclosed are reciprocating carriage arms carried on roll bearings engaged on guide rails, where the arms are independently driven, having common "shared" magnet means. The coil-mounting portion of each arm is "twisted" 90° so the set of coil units align... | 12/03/1991 |
| 5029029 | Linear actuator with reduced wear guide way A linear actuator for positioning the heads of a disk file relative to tracks on the disks employs a ceramic material having wear properties superior to steel in guide surfaces for guiding a head supporting carriage running on rotary bearings in contact w... | 07/02/1991 |
| 5012372 | Head access mechanism for moving heads An access mechanism includes a fixed generating section for generating a first magnetic field, and a carriage, having at least one head, for generating a second magnetic field so as to be moved together with the head in accordance with a propulsive force ... | 04/30/1991 |
| 5008876 | Carriage lock apparatus A carriage on which a head is mounted has a rack which can be engaged with gear teeth located on a specific position. The gear teeth can be moved so as to engage with and disengage from the rack. The rack has a first pitch different from a second pitch of... | 04/16/1991 |
| 4996618 | Magnetic disk apparatus having additional carriage adapted to prevent adsorption of magnetic head A magnetic disk apparatus comprises a magnetic disk for recording information thereon; a power supply; an electric motor for rotating the magnetic disk by means of electric power which is supplied from the power supply; a floating type magnetic head for r... | 02/26/1991 |
| 4982300 | Restrictively damped actuator mount for disc drives A magnetic disc drive includes a rigid housing, a plurality of data storage discs rotatably mounted in the housing, and a carriage for supporting and placing transducing heads in selected dispositions with respect to the rotating discs. An actuator or voi... | 01/01/1991 |
| 4974107 | High performance linear actuator for memory storage device A high performance linear actuator for a memory storage device includes a carriage having bearings at opposed sides thereof for engaging a pair of rail members. One of the pair of rail members is preloaded against the respective carriage bearings to provi... | 11/27/1990 |
| 4967296 | Lightweight, rigid, compact configuration for the voice coil, carriage and printed circuit cable in a disc drive The carriage assembly of this invention includes an oval coil whose shape is maintained by a rectangular bobbin which is passed through the open sides of the rectangular carriage frame and fastened inside the carriage frame so that the ends of the coil pr... | 10/30/1990 |
| 4864447 | Linear actuator for a memory storage apparatus A linear actuator comprises a pair of central poles symmetrically arranged parallel to the direction of motion of a carriage for transducers. Four permanent magnets are disposed around each central pole leaving predetermined gaps. Four ambient poles and o... | 09/05/1989 |
| 4853808 | Linear actuator for disc drive A disk drive includes a linear actuator in which a single coil is mounted to the side of a carriage assembly and in association with a magnetic structure linearly moves the carriage assembly along upper and lower rails in positioning pickup heads on the s... | 08/01/1989 |
| 4819106 | Head positioning assembly for magnetic disc apparatus A carriage of a head positioning assembly is disposed along an edge of a magnetic disc so as not to come in contact with the magnetic disc, whereby the length of the winding bobbin of the voice coil can be elongated, so that a driving force generated in t... | 04/04/1989 |
| 4819109 | Slidable carriage mount for disc memory apparatus A transducer carriage 1 is slidably mounted on and between parallel guide rails 2a, 2b by two spaced pairs of inclined bearing rollers 3a, 4a, 3b, 4b, on one side and a single intermediate pair of such rollers 3c, 4c on the other side. The lower intermedi... | 04/04/1989 |
| 4812934 | Actuator for memory storage device In a magnetic disc device, it is necessary that a magnetic head be positioned above an object data track at a high speed and with a high accuracy. This positioning operation is carried out by an actuator. In order to carry out a magnetic head-positioning ... | 03/14/1989 |
| 4760480 | Head access mechanism for magnetic disk memory device A head access mechanism of the magnetic disk memory device for memorizing information by means of a rigid or flexible magnetic disk. The head access mechanism is equipped with a moving-coil type linear motor comprising an E-shaped yokes with two magnetic ... | 07/26/1988 |
| 4745503 | Linear actuator for moving a recording/reading head in an access direction relative to a recording disc A linear actuator has a flat box-like carriage movable along an access direction of a disk as a recording medium, a motor coil housed and fixed in the carriage, and a permanent magnet arrangement housed and fixed in the carriage to apply a magnetic field ... | 05/17/1988 |
| 4745501 | Thermal isolation of the voice coil motor from base plate and carriage guide rails of a disc drive A disc drive is disclosed including a base that includes a first section for mounting the motor that supports and spins the discs, and a second section for mounting the actuator and the carriage which is to carry the transducers toward and away from the d... | 05/17/1988 |
| 4730227 | Disk file actuator with combined carriage rail and isolator mount for drive magnet An apparatus is disclosed for actuating the read-write heads of a disk file in which a plurality of support rails having resilient bushings at either end support on their central portions a carriage for the read-write heads and on their resilient bushings... | 03/08/1988 |
| 4730226 | Actuator carriage with "splayed-bearing" array Disclosed are reciprocating carriages carried on roll bearings engaged on guide rails, where some of the bearings are made flexible to be compliantly engaged against a rail surface.... | 03/08/1988 |
| 4654737 | Magnetic disk memory head carriage assembly employing backlash-free rack and pinion drive mechanism A carriage supporting at least one read/write head is displaceable by a rack and pinion drive toward and away from the axis of rotation of a magnetic disk. The carriage has a pair of rollers--one at the inner end of the carriage, the other at the outer en... | 03/31/1987 |
| 4620253 | Low mass actuator system for magnetic recording disk An actuator for a magnetic read/write head carried by a linear motor has its stator located between a pair of disks within a stack of magnetic recording disks. The stator comprises an array of reversed polarity magnets (preferably permanent) in a linear a... | 10/28/1986 |
| 4590529 | Carriage device for moving and positioning magnetic head A carriage device used for moving and positioning a magnetic head opposite prescribed tracks of a magnetic disk has the magnetic head mounted on a carriage which has linear motor mechanisms built integrally therein. The linear motor mechanisms incorporate... | 05/20/1986 |
| 4573094 | Moving magnet disc drive actuator A transducer actuator assembly (10) for a rotating disc memory apparatus has at least one pair of coils (40, 41) symmetrically spaced from a center plane of a linearly moving carriage (21) where the coils are stationary with respect to a fixed actuator ba... | 02/25/1986 |
| 4571649 | Disk drive carriage structure A disk memory assembly has a carriage structure which has a coil assembly secured to one end and is supported by bearings for rectilinear movement in response to the energization of a voice coil. The carriage has four fins, a tower member and a horizontal... | 02/18/1986 |
| 4506307 | Magnetic head slider and actuator assembly A magnetic head slider and actuator assembly comprises an X-shaped shuttle actuator movable within a slotted portion of a frame within which permanent magnets are positioned. The shuttle actuator supports an electrical coil for interaction with the magnet... | 03/19/1985 |
