Patents Examined by William J. Klimowicz
  • Patent number: 11017800
    Abstract: A head shell is attachable to and detachable from a connector of a tone arm of a record player, and holds a pickup cartridge. The head shell includes a cylinder attachable to and detachable from the connector, a head shell main body held to the cylinder, and a fixing screw capable of fixing the head shell main body to the cylinder. The cylinder includes a cylindrical cylinder external circumferential surface and a groove disposed on the cylinder external circumferential surface along an axial direction of the cylinder. A space is defined between the fixing screw and the groove in a circumferential direction of the cylinder.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: May 25, 2021
    Assignee: Audio-Technica Corporation
    Inventor: Aya Mashimo
  • Patent number: 11017806
    Abstract: A Spin Hall Effect (SHE) assisted magnetic recording device is disclosed wherein a SHE layer comprising a giant Spin Hall Angle material is formed in a write gap between a main pole (MP) trailing side and trailing shield (TS). The SHE layer contacts either the MP or TS, and has a front side at the air bearing surface or recessed therefrom. In one embodiment, a current (I1) is applied between the MP trailing side and SHE layer and is spin polarized to generate a first spin transfer torque that tilts a local MP magnetization to a direction that enhances a MP write field. In a second embodiment, a current (I2) is applied between the SHE layer and TS and is spin polarized to generate a second spin transfer torque that tilts a local TS magnetization to a direction that increases the TS return field and improves bit error rate.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: May 25, 2021
    Assignee: Headway Technologies, Inc.
    Inventors: Wenyu Chen, Yan Wu
  • Patent number: 11017819
    Abstract: The present disclosure relates to a data storage device interior components and/or data storage device housing components that include one or more solid-state deposition layers, and related methods of applying solid-state material to said components via solid-state deposition.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: May 25, 2021
    Assignee: Seagate Technology LLC
    Inventors: Jerome Coffey, Sam Severson, David Lapp
  • Patent number: 11011201
    Abstract: A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: May 18, 2021
    Assignee: Seagate Technology LLC
    Inventors: Helene Parwana Habibi, Simon Bance, Martin Liam McGarry, Raul Horacio Andruet, Martin Giles Blaber, Weibin Chen, John Charles Duda, Mark Anthony Gubbins, Erik Jon Hutchinson, Vivek Krishnamurthy, Michael Allen Seigler, Chen Wang
  • Patent number: 11011194
    Abstract: A cleaning mechanism is provided with an arm and a drive unit. The arm includes: a holder having a shape that allows a magnetic tape touching a magnetic head to be separated from the magnetic head without wearing the magnetic tape while the magnetic tape is under tension; and a cleaning unit that can be brought into contact with the contact surface of the magnetic head that was touching the magnetic tape while the magnetic tape is separate from the magnetic head. The drive unit drives the arm to separate the magnetic tape touching the magnetic head from the magnetic head without wearing the magnetic tape while the magnetic tape is under tension, and drives the arm so that the cleaning unit comes in contact with the contact surface of the magnetic head that was touching the magnetic tape while the magnetic tape is separate from the magnetic head.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: May 18, 2021
    Assignee: NEC Platforms, Ltd.
    Inventor: Hidehiro Urahama
  • Patent number: 10989770
    Abstract: A wide magnetic field range measuring method includes the measurement step for a medium-and-large magnetic field and the measurement step for an extremely large magnetic field. In addition to that, the method further includes: Step 1: placing four orthogonally-configured magnetic resistance resistors into an external magnetic field and obtaining the resistance value of each magnetic resistance resistor; Step 2: substituting the resistance values of two mutually orthogonal magnetic resistance resistors into the measurement step for a medium-and-large magnetic field for calculation; if calculation process converges, then, determining that the external magnetic field as a medium-and-large magnetic field with the calculation result representing the magnetic field intensity and the direction of the medium-and-large magnetic field.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 27, 2021
    Assignees: TSINGHUA UNIVERSITY, SICHUAN ENERGY INTERNET RESEARCH INSTITUTE, TSINGHUA UNIVERSITY
    Inventors: Jinliang He, Yong Ouyang, Jun Hu, Shanxiang Wang, Gen Zhao, Zhongxu Wang, Rong Zeng, Chijie Zhuang, Bo Zhang, Zhanqing Yu
  • Patent number: 10984825
    Abstract: A head suspension assembly includes a support plate, an interconnection member including a metal plate on the support plate, a first insulating layer on the metal plate, a conductive layer on the first insulating layer and forming a pair of connection pads, and a second insulating layer on the conductive layer, a head mounted in the interconnection member, and a piezoelectric element electrically connected to the connection pads and configured to displace the head when a predetermined voltage is applied across the connection pads. At least one opening is formed in each of the connection pads. The piezoelectric element is electrically connected to each of the connection pads by a conductive adhesive that is between the piezoelectric element and each of the connection pads and filled in the opening.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: April 20, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Yasuo Suzuki
  • Patent number: 10978099
    Abstract: A disk drive is provided with an enclosure and a disk mounted for rotation within the enclosure. The disk drive is also provided with a head mounted for rotation within the enclosure and adapted to engage the disk, a housing defining a cavity extending along an axis within the enclosure, and a shaft received within the cavity, mounted for rotation about the axis and coupled to one of the disk and the head. The disk drive is also provided with a bearing and a bearing seat. The bearing is formed generally spherical, oriented in a non-rolling configuration along the axis, and secured to one of the housing and the shaft. The bearing seat has a surface secured to the other of the housing and the shaft and biased to engage the bearing, wherein at least one of the bearing and the surface includes a low-friction coating formed thereon.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: April 13, 2021
    Assignee: GALLEON INTERNATIONAL CORPORATION
    Inventors: Alan L. Grantz, Frank Sykora, David Charles Parsons
  • Patent number: 10971178
    Abstract: An approach to a reduced-head hard disk drive (HDD) involves a load/unload (LUL) ramp subsystem that includes a ramp assembly that includes a rotatable latch link configured for mechanical interaction with a head-stack assembly (HSA) and a LUL ramp coupled with the latch link, configured such that in response to a force applied to the latch link by the HSA, the latch link rotates which disengages a magnetic latch and drives the LUL ramp to rotate into an operational state disengaged from any recording disk of a multiple-disk stack. The subsystem may further include a motor configured to drive rotation of a lead screw to which the ramp assembly is attached, to drive vertical translation of the ramp assembly, thereby providing for loading the vertically-translatable HSA onto and off of each of the disks of the disk stack.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: April 6, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventor: Jon M. Garbarino
  • Patent number: 10964341
    Abstract: A nonmagnetic spacer layer in a magnetoresistive effect element includes a nonmagnetic metal layer that is formed of Ag and at least one of a first insertion layer that is disposed on a bottom surface of the nonmagnetic metal layer and a second insertion layer that is disposed on a top surface of the nonmagnetic metal layer. The first insertion layer and the second insertion layer include an Fe alloy that is expressed by Fe?X1-?. Here, X denotes one or more elements selected from a group consisting of O, Al, Si, Ga, Mo, Ag, and Au, and ? satisfies 0<y<1.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: March 30, 2021
    Assignee: TDK CORPORATION
    Inventors: Kazuumi Inubushi, Katsuyuki Nakada
  • Patent number: 10964342
    Abstract: A method of controlling a shape and size of at least one solder joint of a magnetic recording head that includes a trailing surface and a plurality of bond pads, wherein each bond pad comprises a base layer comprising a top surface and a top edge, the method including the steps of forming at least one solder dam by covering a portion of the top surface of the base layer of at least one of the bond pads with a coating layer that comprises a nonwettable, electrically conductive material positioned adjacent to the top edge of at least one of the bond pads, thereby defining a coated portion and an uncoated portion of the base layer, and applying solder material to the uncoated portion of the base layer adjacent to the solder dam so that the coating layer constrains movement of the solder material beyond the uncoated portion.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: March 30, 2021
    Assignee: Seagate Technology LLC
    Inventors: Robbee Lee Grimm, Greg Arthur Schmitz, Venkateswara Rao Inturi, Aaron Michael Collins
  • Patent number: 10957351
    Abstract: According to one embodiment, a microactuator includes a wiring substrate, and a piezoelectric element connected to first and second connecting pads of the wiring substrate. The piezoelectric element includes a piezoelectric substrate, and a first electrode and a second electrode provided on surfaces of the piezoelectric substrate. The first electrode includes a first electrode portion on an end portion on a first main surface. The second electrode includes a fifth electrode portion having an electrode end which faces the first electrode portion across a gap and provided on the first main surface. The piezoelectric element includes a protective insulating layer covering at lease an end portion of the fifth electrode including the electrode end.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: March 23, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventor: Hirofumi Nesori
  • Patent number: 10957353
    Abstract: An optical phonograph cartridge includes an optical vibration sensor that operatively couples to a stylus/cantilever to convert, to optical signals, mechanical vibrations representative of the music encoded in the groove of a vinyl record. The optical vibration sensor includes a photonic integrated circuit includes an input waveguide network for conveying light and an output waveguide network for conveying modulated light, wherein the modulated light is generated by a screen that is attached to the cantilever and is disposed between the input and output waveguide networks.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: March 23, 2021
    Assignee: Phix Photonics Assembly
    Inventors: Albert Hasper, Dimitri Geskus, Ronald Dekker
  • Patent number: 10957347
    Abstract: An apparatus, in accordance with one embodiment, includes a write transducer having a pair of writer poles having pole tips, the pole tips defining a write gap therebetween. A thin film device is positioned at least in part in the write gap for raising a local temperature of the write gap. Electrical connections for causing a current to pass through the thin film device are also present. A method, in accordance with one embodiment, includes passing a current through a thin film device positioned at least in part in a write gap defined between pole tips of writer poles of a write transducer for causing heating of the thin film device. A level of the current is changed in response to detection of a predefined condition.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: March 23, 2021
    Assignee: International Business Machines Corporation
    Inventors: Robert Biskeborn, Hugo E. Rothuizen, David Seagle
  • Patent number: 10950269
    Abstract: An optical recording medium includes a first disk, a second disk, and an adhesive layer for bonding the first disk to the second disk. The first disk and the second disk each include a substrate having a first surface and a second surface and having a gradient on an outer peripheral portion of the second surface, two or more information signal layers disposed on the first surface, an intermediate layer disposed between adjacent information signal layers, and a cover layer covering the two or more information signal layers and the intermediate layer. The second surface of the substrate included in the first disk faces the second surface of the substrate included in the second disk with the adhesive interposed therebetween.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: March 16, 2021
    Assignee: SONY CORPORATION
    Inventors: Minoru Kikuchi, Akio Koshita
  • Patent number: 10950259
    Abstract: According to one embodiment, a magnetic head includes a magnetic pole, a first shield, and a stacked body. The stacked body is provided between the magnetic pole and the first shield. The stacked body includes a magnetic layer including at least one selected from the group consisting of Fe, Co, and Ni, a first conductive layer provided between the magnetic pole and the magnetic layer, the first conductive layer being nonmagnetic, and a second conductive layer provided between the magnetic layer and the first shield, the second conductive layer being nonmagnetic. The first conductive layer includes Ir. A thickness of the first conductive layer along a first direction is not less than 0.3 nm and not more than 0.8 nm. The first direction is from the first conductive layer toward the second conductive layer.
    Type: Grant
    Filed: June 28, 2020
    Date of Patent: March 16, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoyuki Narita, Hirofumi Suto, Tomoyuki Maeda
  • Patent number: 10950262
    Abstract: An MTJ or MR read sensor is formed by depositing a stack in a reverse order with a free layer (FL) deposited on a lower shield, followed by a tunneling barrier layer (for an MTJ) or a conducting spacer layer (for an MR) and, finally, an antiferromagnetically coupled pinning structure and an upper shield. This reverse order permits a series of etching processes to be accurately performed on the lower shield and the stack together with the formation of biasing layers that are coupled to the lower shield and the stack, without adversely affecting the stability of the pinning structure. Further, the distance between the FL and the shield is accurately determined and repeatable even down to the sub-nm regime. An upper shield can then be formed and also coupled to the biasing layers.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: March 16, 2021
    Assignee: Headway Technologies, Inc.
    Inventors: Wenyu Chen, Yan Wu
  • Patent number: 10943612
    Abstract: A reader having a sensor stack and a top shield above the sensor stack. The top shield has an upper surface and a lower surface. The reader also includes at least one side shield below the top shield and adjacent to the sensor stack. The reader further includes a decoupling layer between the upper surface of the top shield and the at least one side shield. The decoupling layer is configured to decouple a first portion of the at least one side shield, proximate to the sensor stack, from at least a portion of the top shield.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventors: Victor Sapozhnikov, Taras Grigorievich Pokhil, Mohammed Shariat Ullah Patwari
  • Patent number: 10943609
    Abstract: According to one embodiment, a magnetic recording device includes a magnetic head, a first circuit, and a second circuit. The magnetic head includes a magnetic pole, a first shield, a stacked body provided between the magnetic pole and the first shield, a first terminal electrically connected to the magnetic pole, a second terminal electrically connected to the first shield, and a coil. The first circuit is electrically connected to the first terminal and the second terminal. The second circuit is electrically connected to the coil. The first circuit performs at least a first operation. In the first operation, the first circuit supplies a first current to a current path between the first and second terminals when the second circuit supplies a recording current to the coil. The first current is smaller than a second current. The second current causes an electrical resistance of the current path to oscillate.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: March 9, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoyuki Narita, Tomoyuki Maeda
  • Patent number: 10937459
    Abstract: A disc grabbing device adapted to a disc archive system for grabbing at least one disc is provided. The disc grabbing device includes a center cylinder, a drive controller and a detection device. When the disc is grabbed by the disc grabbing device, the center cylinder passes through the center hole of the disc. The drive controller is configured to control the disc grabbing device to grab the disc. The detection device is electrically connected to the drive controller to detect a surface of a disc placed on a disc tray to be grabbed, and to correspondingly transmit a drive stop signal to the drive controller to stop the operation of the disc grabbing device.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: March 2, 2021
    Inventors: Cheng-Wen Huang, Ming-Chun Tsao, Hui-Chung Leu