Patents Examined by Jefferson Evans
  • Patent number: 11355141
    Abstract: A PMR (perpendicular magnetic recording) write head configured for microwave assisted magnetic recording (MAMR) in the form of spin assisted writing (SAW) or spin torque oscillation (STO) includes a spin-torque oscillator (STO) or SAW device and trailing shield formed of high moment magnetic material (HMTS). By patterning the STO or SAW and the HMTS in a simultaneous process the HMTS and the STO or SAW layers are precisely aligned and have very similar cross-track widths. In addition, the write gap at an off-center location has a thickness that is independent from its center-track thickness and the write gap total width can have a flexible range whose minimum value is the same width as the STO or SAW width.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: June 7, 2022
    Assignee: Headway Technologies, Inc.
    Inventors: Yuhui Tang, Ying Liu
  • Patent number: 11348605
    Abstract: A PMR (perpendicular magnetic recording) write head configured for thermally assisted magnetic recording (TAMR) and microwave assisted magnetic recording (MAMR) is made adaptive to writing at different frequencies by inserting thin layers of magnetic material into the material filling the side gaps (SG) between the magnetic pole (MP) and the side shields (SS). At high frequencies, the thin magnetic layers saturate and lower the magnetic potential of the bulky side shields.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: May 31, 2022
    Assignee: Headway Technologies, Inc.
    Inventors: Ying Liu, Yuhui Tang, Yue Liu, Jiun-Ting Lee, Shengyuan Wang, Xiaomin Liu
  • Patent number: 11347281
    Abstract: A device for fixing a hard disk is provided, which is arranged in a case and can install multiple hard disks at one time. The device for fixing a hard disk includes fixing brackets and an elastic support member. The elastic support member is arranged between two adjacent fixing brackets. The number of the fixing bracket is even, and the fixing brackets are arranged in symmetry. The hard disk is placed between the elastic support member and one single fixing bracket, which can quickly and conveniently realize the fixing and installation of the hard disk, save a lot of space, and can be arranged in array in the case. The device has high reliability and good shock absorption effects. When the space of the case is limited, the demand of high-density storage configuration can also be achieved.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: May 31, 2022
    Assignee: ZHENGZHOU YUNHAI INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Wenda Zhang, Wenhan Xu
  • Patent number: 11342004
    Abstract: A mover replacement system for removing a media mover, movable between an operating position and a removable position, from within a media library includes a module housing and a service tray. The module housing forms at least a part of a library housing. The service tray is removably positionable within the module housing. The service tray is configured to releasably retain the media mover when the media mover is in the removable position so that the service tray and the media mover are movable as an integral unit out of and into the module housing. The service tray includes a tray body and at least one locking mechanism that is movable relative to the tray body between a retracted position when the at least one locking mechanism is positioned not to engage the media mover, and a fully extended position when the at least one locking mechanism is positioned to retain the media mover relative to the tray body.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: May 24, 2022
    Assignee: Quantum Corporation
    Inventor: Christian Allen Todd
  • Patent number: 11335367
    Abstract: An aluminum alloy substrate (1) for magnetic disk satisfies at least two of three inequalities of an inequality group [A] and satisfies all of four inequalities of an inequality group [B], or satisfies at least two of the three inequalities of the inequality group [A] and satisfies all of four inequalities of an inequality group [C], when a plate thickness of the disk at a position (b1) is defined as tb1, a plate thickness at a position (b2) is defined as tb2, a plate thickness at a position (b3) is defined as tb3, a plate thickness at a position (a1) is defined as ta1, a plate thickness at a position (a2) is defined as ta2, and a plate thickness at a position (a3) is defined as ta3.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: May 17, 2022
    Assignees: FURUKAWA ELECTRIC CO., LTD., UACJ CORPORATION
    Inventors: Kimie Imakawa, Toshihiro Nakamura, Hideki Takahashi, Keita Yoshimura, Wataru Kumagai, Naoki Kitamura, Kotaro Kitawaki
  • Patent number: 11335365
    Abstract: A magnetoresistance effect element and a Heusler alloy in which a state change due to annealing does not easily occur. The element includes a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer positioned between the first ferromagnetic layer and the second ferromagnetic layer, in which at least one of the first ferromagnetic layer and the second ferromagnetic layer is a Heusler alloy in which a portion of elements of an alloy represented by Co2Fe?Z? is substituted with a substitution element, in which Z is one or more elements selected from the group consisting of Al, Si, Ga, Ge, and Sn, ? and ? satisfy 2.3??+?, ?<?, and 0.5<?<1.9, and the substitution element is one or more elements selected from the group consisting of elements having a melting point higher than that of Fe among elements of Groups 4 to 10.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: May 17, 2022
    Assignee: TDK CORPORATION
    Inventors: Kazuumi Inubushi, Katsuyuki Nakada
  • Patent number: 11328743
    Abstract: Provided is a precursor of a current-perpendicular-to-plane giant magnetoresistive element having a laminated structure of ferromagnetic metal layer/nonmagnetic metal layer/ferromagnetic metal layer, the precursor having a nonmagnetic intermediate layer containing a non-magnetic metal and an oxide in a predetermined ratio such that the distribution thereof is nearly uniform at the atomic level. Also provided is a current-perpendicular-to-plane giant magnetoresistive element having a current-confinement structure (CCP) which has: a current confinement structure region made of a conductive alloy and obtained by heat-treating a laminated structure of a ferromagnetic metal layer and a nonmagnetic intermediate layer at a predetermined temperature; and a high-resistance metal alloy region containing an oxide and surrounding the current confinement structure region.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 10, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoya Nakatani, Taisuke Sasaki, Takao Furubayashi, Kazuhiro Hono
  • Patent number: 11322177
    Abstract: [Object] To provide technologies such as an orientation device capable of increasing strength of a magnetic field in a transport path. [Solving Means] An orientation device according to the present technology includes a transport path, a permanent magnet portion, and a yoke portion. The transport path allows a base on which a magnetic coating film containing magnetic powder has been formed to pass through the transport path along a transport direction. The permanent magnet portion includes a plurality of first permanent magnets, and a plurality of second permanent magnets that is opposed to the plurality of first permanent magnets across the transport path in a vertical direction that is vertical to the transport direction in a manner that opposite poles face each other, the permanent magnet portion vertically orienting particles of the magnetic powder by applying a magnetic field to the magnetic coating film on the base that passes through the transport path.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 3, 2022
    Assignee: Sony Corporation
    Inventors: Eiji Nakashio, Hidetoshi Sakuma, Shuhei Matsuya, Hidetoshi Nishiyama, Jun Sasaki
  • Patent number: 11308980
    Abstract: According to one embodiment, a disk device includes a housing, a plurality of magnetic recording media disposed in the housing in a multi-layered manner with intervals therebetween and a plurality of spacer rings, one of the spacer rings being disposed between each adjacent pair of the magnetic recording media. At least one of an uppermost magnetic recording medium and a lowermost magnetic recording medium includes a substrate having a rigidity higher than that of substrates of the other magnetic recording media, and one or more of the plurality of spacer rings is in contact with the magnetic recording media including the substrate having the higher rigidity, and has a thermal expansion coefficient different from a thermal expansion coefficient of the other spacer rings.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: April 19, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Mio Okada
  • Patent number: 11308990
    Abstract: An apparatus includes a housing, a data storage magazine configured to hold a plurality of data storage devices, and a movable carriage disposed within the housing that is configured to selectively couple the data storage devices to a host device. The data storage magazine includes a set of magazine signal paths configured to provide signals to the plurality of data storage devices. The movable carriage includes a set of carriage signal paths configured to provide signals to the plurality of data storage devices. The apparatus includes a controller configured to power the plurality of data storage devices by selectively routing the signals via the set of magazine signal paths or the set of carriage signal paths.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: April 19, 2022
    Assignee: Seagate Technology LLC
    Inventors: Riyan Mendonsa, Brett Herdendorf, Krishnan Subramanian, Jon Trantham
  • Patent number: 11305397
    Abstract: The present disclosure includes a lapping system that includes a temperature control system system to heat or cool the lapping plate while lapping. The temperature control system can include a closed circuit fluid system and/or one or more electrical resistive heating elements. In some embodiments that cooling system can control the temperature of the lapping plate during lapping to within +/?5° C., or even +/?0.5° C.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: April 19, 2022
    Assignee: Seagate Technology LLC
    Inventors: Andrew Habermas, Dat Quach, Jeff O'Konski, Yuhong Xiong, Ricky Anderson, Joshua Zierhut
  • Patent number: 11308994
    Abstract: A hard disk drive includes a base, a cover coupled to the base to create an enclosure, and a voice coil motor assembly that is positioned within the enclosure. The cover includes a spring positioned adjacent to the voice coil motor assembly to dampen vibration of the voice coil motor assembly.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: April 19, 2022
    Assignee: Seagate Technology LLC
    Inventors: Pow Ming Yap, Tai Zen Tan, Siew Ming Ng, Hui Khim Cho, Swee How Alvin Teo
  • Patent number: 11302356
    Abstract: In the magnetic recording medium, a number distribution A of a plurality of bright regions, based on equivalent circle diameters thereof, in a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer by a scanning electron microscope at an acceleration voltage of 5 kV and a number distribution B of a plurality of dark regions, based on equivalent circle diameters thereof, in a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer by a scanning electron microscope at an acceleration voltage of 2 kV respectively satisfy a predetermined number distribution.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: April 12, 2022
    Assignee: FUJIFILM Corporation
    Inventor: Norihito Kasada
  • Patent number: 11295771
    Abstract: The present disclosure generally relates to a head positioning assembly in a tape embedded drive. The tape embedded drive has two reels as well as four guide rollers. The reels and guide rollers are arranged within the tape embedded drive so as to position the head positioning assembly as close to the center of the tape embedded drive as possible. In so doing, the reels, guide rollers, and head assembly are more stable which reduces or even eliminates shock and vibration to the tape embedded drive.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: April 5, 2022
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Akira Sakagami, Kouki Uefune, Toshio Takahashi
  • Patent number: 11295769
    Abstract: The present disclosure generally relates to a voice coil motor (VCM) yoke assembly mounted to an actuator block for a data storage device. One or more fastening mechanisms couple the VCM assembly to the actuator block. The fastening mechanisms are coupled to the VCM assembly by one or more soft mounts. The one or more soft mounts reduce undesirable movement of the magnetic recording head by spacing the VCM assembly from the actuator block, yet still ensuring the VCM assembly is properly coupled to the actuator block.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: April 5, 2022
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Kouki Uefune, Takako Hayakawa, Toshio Takahashi
  • Patent number: 11289119
    Abstract: A recording head has a near-field transducer proximate a media-facing surface of the recording head. A write pole has a leading edge proximate to and facing the near-field transducer at the media-facing surface. A magnetic shield faces the leading edge of the write pole at the media-facing surface and is magnetically coupled to the write pole. The magnetic shield has a notch centered over the near-field transducer.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: March 29, 2022
    Assignee: Seagate Technology LLC
    Inventors: Mourad Benakli, Kirill Alexander Rivkin, Hua Zhou, Martin Giles Blaber, TaeWoo Lee, Michael Allen Seigler, Huaqing Yin
  • Patent number: 11289118
    Abstract: Aspects of the present disclosure generally relate to a magnetic recording head of a magnetic media drive. In one example, a magnetic recording head includes a main pole, a trailing shield, and spintronic device disposed between the main pole and the trailing shield. The spintronic device comprises a negative polarization layer (NPL) disposed on the main pole, the NPL comprising FeTi, FeV, FeCr, or FeN, an interface layer disposed on the NPL, the interface layer comprising V, Cr, or Ru, a spacer layer disposed on the interface layer, and a spin torque layer (FGL) disposed on the spacer layer. When current is applied to the spintronic device, the NPL and a first interface disposed between the NPL and the interface layer have a negative spin polarization while the FGL and a second interface disposed between the FGL and the spacer layer have a positive spin polarization.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: March 29, 2022
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Christian Kaiser, Andrew Chen, Zheng Gao, Susumu Okamura, James Mac Freitag
  • Patent number: 11281184
    Abstract: An apparatus such as a hard disk drive includes a base deck, which includes a base member and sidewalls extending from the base member. The base member and the sidewalls both include a non-metallic material and a metallic stiffening material.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: March 22, 2022
    Assignee: Seagate Technology LLC
    Inventors: Riyan Alex Mendonsa, Brett R. Herdendorf, Anil J. Reddy, Iraj Jabbari
  • Patent number: 11282538
    Abstract: A non-local spin valve (NLSV) sensor includes a bearing surface and a detector located proximate to the bearing surface. The NLSV sensor also includes a channel layer located behind the detector relative to the bearing surface, and in a substantially same plane as the detector. The channel layer has a front end that is proximate to the detector and a rear end that is distal to the detector. The NLSV sensor further includes first and second spin injectors, with the first spin injector located proximate to the rear end of the channel layer and positioned above the channel layer, and the second spin injector located proximate the rear end of the channel layer and positioned below the channel layer.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: March 22, 2022
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventor: Mark Thomas Kief
  • Patent number: 11276427
    Abstract: A recording and reproducing apparatus includes: a magnetic head in which a servo band having a servo pattern and a data band having data tracks are alternately arranged along a width direction, the magnetic head including a recording and reproducing element that records or reproduces data with respect to the data track, and at least two servo reproducing elements that read servo patterns adjacent to each other in the width direction of the magnetic tape; a selection unit that selects a servo reproducing element from the servo reproducing elements according to a position of the data track, as a target of recording or reproducing of data in the data band, along the width direction; and a controller that controls positioning of the magnetic head along the width direction by using a result of reading of the servo patterns by the servo reproducing element selected by the selection unit.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: March 15, 2022
    Assignee: FUJIFILM CORPORATION
    Inventor: Toru Nakao