Patents Examined by Allen Cao
  • Patent number: 8411391
    Abstract: A head gimbal assembly comprises a slider having reproduction/reproducing elements for reproducing and recording information to/from a surface of a recording medium. A suspension flexibly supports the slider opposite to a surface of a recording medium. A light source is disposed on the suspension for emitting a light beam. An optical waveguide is disposed between the slider and the laser light source for introducing a light beam from the light source into the slider.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 2, 2013
    Assignee: Seiko Instruments Inc.
    Inventors: Masakazu Hirata, Manabu Oumi, Majung Park, Mizuaki Suzuki
  • Patent number: 8395864
    Abstract: The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The present invention discloses an integrated design including the electrical interconnect, the gimballing mechanism, the preload mechanism and the slider supporting mechanism integrated into a single supporting structure.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: March 12, 2013
    Assignee: Xyratex Technology Limited
    Inventors: Zine-Eddine Boutaghou, Peter Crane, Peter R. Goglia
  • Patent number: 8390951
    Abstract: As a measure against vibration caused by disturbance due to mass eccentricity of a disc, a conventional disc device has a means to add an auxiliary mass that passively operates. This method has no way to enhance vibration damping effect other than setting the auxiliary mass to be large, and therefore there is a problem that the device becomes large. An auxiliary mass 300 is actively driven by an auxiliary mass driving portion 360. The driving of the auxiliary mass 300 is performed by amplifying a signal corresponding to a force transmitted from a main frame portion 100 to the auxiliary mass 300. This achieves a vibration damping effect using the small auxiliary mass 300 to the same degree as that where the large auxiliary mass is mounted.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: March 5, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventor: Eiji Yokoyama
  • Patent number: 8385020
    Abstract: A shield design for a magnetic write head is described that eliminates the far-field WATE problem while still maintaining side shielding ability. This is achieved by moving all but the central sections of the three shields (LS, SS, and WS) and, optionally, the top yoke a short distance further away from the recording medium than the ABS.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: February 26, 2013
    Assignee: Headway Technologies, Inc.
    Inventor: Tai Min
  • Patent number: 8379348
    Abstract: The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The present invention discloses an integrated design including the electrical interconnect, the gimballing mechanism, the preload mechanism and the slider supporting mechanism integrated into a single supporting structure.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: February 19, 2013
    Assignee: Xyratex Technology Limited
    Inventors: Zine-Eddine Boutaghou, Peter Crane, Peter R. Goglia
  • Patent number: 8373943
    Abstract: According to one embodiment, a method for producing a magnetic head includes depositing a first film above a substrate, etching a pattern into the first film, depositing a second film on the etched portion of the first film, and depositing a third film above the first and second film to form a multilayer magnetic film, wherein the second film is embedded between the first and third film in a portion of the first film that is removed. In another embodiment, a differential magnetic read head includes a magnetic multilayer film comprising a stack of a first magnetic sensor film and a second magnetic sensor film which are not magnetically connected and a hard magnetic film provided on both sides in a track width direction of the magnetic multilayer film for controlling a magnetic domain of the magnetic multilayer film. The hard magnetic film is a laminated structure as described above.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: February 12, 2013
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Kan Yasui, Nobuo Yoshida, Katsuro Watanabe, Norihiro Okawa
  • Patent number: 8369042
    Abstract: Provided are: a first entry preventing nail that interferes with a cartridge at a position closer to an insertion/extraction port than an insertion completed position of an insertion-side end face of the cartridge inserted first; a second entry preventing nail at a position with a space from the first entry preventing nail slightly longer than length of the cartridge, which allows entry of the cartridge and retreat of the first entry preventing nail at that position when a tapered face of the cartridge is at that position while preventing the entry of the cartridge and retreat of the first entry preventing nail at that position when the tapered face of the cartridge is not at that position; and a linkage module which allows advancing and retreating actions of the first and second entry preventing nails in a tradeoff relation.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: February 5, 2013
    Assignee: NEC Corporation
    Inventor: Hiroaki Ishii
  • Patent number: 8363352
    Abstract: Disclosed are a motor and a recording disc drive apparatus that can prevent a fluid in a fluid dynamic bearing from being discharged to the outside. A motor according to an aspect of the invention may include: a shaft; a sleeve having a cylindrical shape and supporting the shaft such that the shaft is rotatable therein; a rotor case engaged with an upper end of the shaft and having a rotor main wall having a cylindrical shape and protruding from one surface thereof in order to receive part of the sleeve; and a cover engaged with an end portion of the rotor main wall and extending the rotor main wall, wherein at least two sealing portions preventing leaks of a fluid used to lubricate the sleeve are formed between an internal circumferential surface, defined by the rotor main wall and the cover, and an outer circumferential surface of the sleeve.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: January 29, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Sang Sun Kang
  • Patent number: 8363353
    Abstract: In a spindle motor, a lead wire extending from a coil includes a first solder portion coated with a first solder. The lead wire is arranged to extend downward through a base hole portion and a board hole portion. The first solder portion is soldered to a circuit board through a second solder portion. An upper end portion of the first solder portion is arranged above an upper surface of the circuit board such that d1>(d2?d3)/2 is satisfied, where d1 denotes the axial distance between the upper end portion of the first solder portion and the upper surface of the circuit board, d2 denotes an opening width of the board hole portion, and d3 denotes the diameter of the lead wire.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: January 29, 2013
    Assignee: Nidec Corporation
    Inventor: Atsushi Yawata
  • Patent number: 8363362
    Abstract: According to one embodiment, a magnetoresistive element includes a first ferromagnetic layer a magnetization direction of which is pinned, a second ferromagnetic layer a magnetization direction of which is changed depending on an external magnetic field, an intermediate layer arranged between the first ferromagnetic layer and the second ferromagnetic layer and including an insulating layer and a magnetic conductive column, an alloy layer formed between the magnetic conductive column in the intermediate layer and the second ferromagnetic layer and including at least one of FeCoAl and FeCoAlCu, and a pair of electrodes configured to supply a current perpendicularly to a film plane of a stacked film including the first ferromagnetic layer, the intermediate layer, the alloy layer and the second ferromagnetic layer.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: January 29, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiromi Fuke, Susumu Hashimoto, Masayuki Takagishi, Hitoshi Iwasaki
  • Patent number: 8358485
    Abstract: A housing member for use in a disk drive apparatus includes a rectangular bottom portion and a side wall portion arranged to extend upward from an outer circumferential portion of the bottom portion. The side wall portion includes four outside surfaces including a first outside surface and a second outside surface perpendicular or substantially perpendicular to the first outside surface. The first outside surface includes a first cutting base region. The second outside surface includes a second cutting base region. The bottom portion includes a bearing fixing portion arranged to fix a bearing mechanism of a motor arranged to rotate a disk.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: January 22, 2013
    Assignee: Nidec Corporation
    Inventors: Kiyofumi Inoue, Shozo Tagata, Takahiro Nakamura, Koji Baba, Toshikazu Himeno
  • Patent number: 8351151
    Abstract: A thermally assisted magnetic write head having a near-field transducer, a magnetic lip and a diffusion barrier layer between the near-field transducer and the magnetic lip. The near-field transducer includes a transparent aperture constructed of a material such as SiO2 and an opaque metallic antenna constructed of a metal such as Au formed at a first edge of the aperture. A magnetic lip, connected with the write pole is formed near a second edge of the aperture with a diffusion barrier layer being disposed between the magnetic lip and the aperture. The diffusion barrier layer prevents migration of atomic between the aperture and the magnetic lip, thereby ensuring robust performance at localized high temperatures generated by the near-field transducer.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: January 8, 2013
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Jordan A. Katine, Vijay P. S. Rawat, Neil L. Robertson, Barry C. Stipe
  • Patent number: 8351153
    Abstract: According to one embodiment, a magnetic recording head includes a main pole having a throat height portion and a flare portion that is connected to the throat height portion, the flare portion gradually being expanded in width to an upper part in an element height direction. The head also includes a sub pole, magnetic shields disposed via a nonmagnetic layer on a trailing side of the main pole and on both sides in a track width direction of the main pole, and a coil for generating a recording magnetic field from the main pole. The nonmagnetic layer has an upper portion of which the thickness is increased stepwise or in a tapered manner in the element height direction with respect to an ABS side, and each portion of the magnetic shields adjacent to the main pole has a shape corresponding to a surface shape of the nonmagnetic layer.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: January 8, 2013
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Isao Nunokawa, Mikito Sugiyama, Kikuo Kusukawa, Hiroyuki Hoshiya
  • Patent number: 8345376
    Abstract: A magnetic disk is provided wherein a non-magnetic substrate, a magnetic layer, a protection layer, and a lubrication layer are sequentially stacked. The surface of the lubrication layer has irregular structure patterns along a circumferential direction of the magnetic disk that have circumferential lengths that each correspond to a central angle. The irregular structure patterns may be formed by an adsorption between the lubrication layer and the surface of the protection layer. When a natural frequency of a magnetic head slider used to record to the magnetic disk is f and the magnetic disk rotation speed is R0, the central angle is set so as not to coincide with an angle ?0 expressed by ?0=360 ×(R0/60)/(f×1000).
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: January 1, 2013
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Takeshi Watanabe
  • Patent number: 8339729
    Abstract: A storage library is described that includes a shelf system adapted to support a number of tape cartridges. The storage library further includes a tape drive adapted to read and write data to and from tape cartridges. The storage library further possesses a temporary repository near the tape drive that is adapted to facilitate an exchange of a first tape cartridge intended to be loaded in the tape drive with a second tape cartridge ready to be removed from the tape drive with a single tape picker device.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: December 25, 2012
    Assignee: Spectra Logic Corp.
    Inventors: Nathan Christopher Thompson, Matthew Thomas Starr
  • Patent number: 8325442
    Abstract: A spin torque oscillator includes a first magnetic layer, a second magnetic layer and a first nonmagnetic layer. The first magnetic layer includes a magnetic film of a magnetic material with a body-centered cubic (bcc) structure and an oriented {110} plane of the body-centered cubic structure, the oriented {110} plane being oriented substantially parallel to a principal plane of the magnetic film. The first nonmagnetic layer is disposed between the first magnetic layer and the second magnetic layer. In addition, a magnetic moment in the magnetic film precesses around an axis substantially parallel to the principal plane. Furthermore, a magnetic field is applied in a direction substantially perpendicular to the principal plane, and a current is passed perpendicularly to the principal plane.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: December 4, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhiko Koui, Mariko Shimizu, Kenichiro Yamada
  • Patent number: 8325446
    Abstract: A head gimbal assembly for a disk drive includes a read head and a suspension assembly. The suspension assembly includes a load beam and a laminate flexure. The laminate flexure includes a structural layer, a dielectric layer, and a conductive layer that includes a plurality of electrical traces. The laminate flexure includes a tongue portion that connects to the read head and a flexure tail that extends away from the tongue portion. The flexure tail includes a plurality of flexure bond pads. Each of the plurality of flexure bond pads includes a widened region of a corresponding one of the plurality of electrical traces in the conductive layer, and a corresponding one of a plurality of segments or discontinuous islands in the structural layer.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: December 4, 2012
    Assignee: Western Digital Technologies, Inc.
    Inventors: Yanning Liu, Wing C. Shum, Tzong-Shii Pan, Kia Moh Teo
  • Patent number: 8320074
    Abstract: A magnetic head which includes a core, a coil wound on the core, terminals to which ends of the coil are connected. The magnetic head also includes a substrate on which mounted are a demodulating electronic component for demodulating an analog output signal output from the terminals to create a digital demodulated signal, and an encrypting electronic component for encrypting the demodulated signal to create an encrypted signal. A cable electrically connects the demodulating electronic component and the terminals. A case body stores the core, the coil, the terminals, and the cable. The demodulating electronic component is mounted on one side of the substrate, and the encrypting electronic component is mounted on the other side of the substrate. The substrate is fixed to the case body so that the demodulating electronic component is placed inside the case body while the encrypting electronic component is placed outside the case body.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: November 27, 2012
    Assignee: Nidec Sankyo Corporation
    Inventors: Toshiro Shiomi, Kazunori Takahashi, Shigeo Nakajima
  • Patent number: 8321881
    Abstract: A media processing device does not execute a media transportation process if the height of media stacked in a media storage unit is at an over capacity level, and reliably prevents problems such as damage to the media transportation mechanism caused by collision with the stacked media. If in the media processing device 200 the height of media stacked in a media storage unit 121, 122 is at a full stack level or over capacity level (step S33 returns yes or step S35 returns yes), an appropriate warning is output (step S34 or step S36) and collision accidents of the media transportation mechanism 131 can be prevented.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: November 27, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Kazuya Toshima
  • Patent number: 8320084
    Abstract: A head gimbal assembly for a disk drive includes a read head and a suspension assembly. The suspension assembly includes a load beam and a laminate flexure. The laminate flexure includes a structural layer, a dielectric layer, and a conductive layer that includes a plurality of electrical traces. The laminate flexure includes a tongue portion that connects to the read head and a flexure tail that extends away from the tongue portion. The flexure tail includes a plurality of flexure bond pads. Each of the plurality of flexure bond pads includes a widened region of a corresponding one of the plurality of electrical traces in the conductive layer, and a corresponding one of a plurality of segments or discontinuous islands in the structural layer.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: November 27, 2012
    Assignee: Western Digital Technologies, Inc.
    Inventors: Wing C. Shum, Yanning Liu, Tzong-Shii Pan, Kia Moh Teo, Brian P. Schott