Patents Examined by William J. Klimowicz
  • Patent number: 10418059
    Abstract: In one general embodiment, a method includes determining a distance from a transducer of a module to an edge of the module closest thereto, and selecting a wrap angle based on the determined distance for inducing tenting of a moving magnetic recording tape in a region above the transducer. In another general embodiment, a method includes running a magnetic recording tape over a tape bearing surface having at least one edge, and detecting signals from the tape at differing wrap angles for estimating a height of tenting of the tape above a transducer at each of the wrap angles. A wrap angle is selected to provide about a predefined height of tenting of the tape above the transducer.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: September 17, 2019
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, W. Stanley Czarnecki, Calvin S. Lo
  • Patent number: 10410682
    Abstract: A disk drive housing includes an accommodation unit in which a disk and a motor are accommodated, the disk rotating about a center axis extending vertically, the motor rotating the disk; and a non-piercing first screw hole including a die-cast metal in which an upper surface is opened, the non-piercing first screw hole extending from a first end surface toward a second end surface. The first screw hole includes a first region disposed at a leading end of an inner surface of the first screw hole, the first region including a first portion of the die-cast metal member covered with a chill layer; and a second region in which a screw is disposed on an inner circumferential surface of the first screw hole, the second region including a second portion of the die-cast metal member that is exposed.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: September 10, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Yasutaka Ino, Toshiya Tsujita
  • Patent number: 10410681
    Abstract: A base deck of a hard drive and methods for making a base deck is disclosed. The base deck includes a plurality of multi-pronged snaps integrally formed with the base deck. Each prong of the plurality of multi-pronged snaps includes a rounded distal portion.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 10, 2019
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brian Lee Burski, Jeffrey Leonard Bruce
  • Patent number: 10410658
    Abstract: A magnetic recording write head includes a spin torque oscillator (STO) between the write pole and trailing shield and an extended seed layer on the write pole beneath the STO. The seed layer has a cross-track width greater than the width of the STO and a depth in a direction orthogonal to the disk-facing surface of the write pole greater than the depth of the STO. A first insulating refill layer is formed on the sides of the extended seed layer and STO and a second insulating refill layer in contact with the first refill layer has a thermal conductivity greater than that of the first refill layer. When current is passing through the STO the extended seed layer spreads the current to reduce heating of the write pole and STO and the bilayer refill material facilitates the transfer of heat away from the write pole and STO.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: September 10, 2019
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Xiaoyong Liu, Quang Le, Hongquan Jiang, Guangli Liu, Jui-Lung Li
  • Patent number: 10403309
    Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a main pole, a trailing shield, and an oscillator located between the main pole and the trailing shield. The oscillator is disposed at a media facing surface (MFS). The oscillator includes a spin-torque layer sandwiched between two distinct spin Hall layers. The two distinct spin Hall layers generate spin-orbit torque (SOT) that induces in-plane precessions on opposite surfaces of the spin-torque layer, and both in-plane precessions are in the same direction. The same-direction in-plane precessions on opposite surfaces of the spin-torque layer reduce the critical current of the oscillation of the oscillator, leading to high quality recording.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: September 3, 2019
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Zhanjie Li, Suping Song, Michael Kuok San Ho
  • Patent number: 10399177
    Abstract: Described are enclosures that include a friction stir weld, including electronic device enclosures, and precursors thereof, that contain a base and a cover that in an assembled condition form a joint at which a friction stir weld can be produced, as well as methods for producing a friction stir weld at a joint of such an assembly.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 3, 2019
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jerome Thomas Coffey, Samuel Edward Severson, David G. Fitzgerald, Jeffrey L. Bruce, David R. Lapp, Darrel R. Culver
  • Patent number: 10395674
    Abstract: According to one embodiment, a method includes determining a first distance from a sensor to a first edge closest thereto, where the sensor is positioned between a lower shield and the first edge, selecting a first wrap angle based on the first distance for inducing tenting of a moving magnetic recording tape in a region above the sensor, determining a second distance from a second edge to the sensor, and selecting a second wrap angle based on the determined second distance for affecting or not affecting the tenting of a moving magnetic recording tape in the region above the sensor.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 27, 2019
    Assignee: International Business Machines Corporation
    Inventor: Robert G. Biskeborn
  • Patent number: 10395676
    Abstract: An apparatus, according to one embodiment, includes a first circuit comprising a pair of terminals coupled to a first read transducer having a tunnel valve structure and a first parallel circuit. A second circuit has a pair of terminals that are coupled to a second read transducer having a tunnel valve structure. An area of a tunnel barrier portion of the second read transducer is larger than an area of a tunnel barrier portion of the first read transducer. The terminal resistance of the first circuit is less than about five times a terminal resistance of the second circuit.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: August 27, 2019
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Robert E. Fontana, Jr., Calvin S. Lo
  • Patent number: 10388317
    Abstract: A disc pick-and-place device including a disc pick-and-place body and a quantity sensing unit is provided. The disc pick-and-place body is for clamping and unloading at least one disc. The quantity sensing unit is disposed on the disc pick-and-place body for sensing the quantity of the at least one disc clamped on the disc pick-and-place body. The quantity sensing unit includes a movable piece and an optical distance measuring device. The movable piece leans on at least one disc and moves as the quantity of the at least one disc changes. The optical distance measuring device is for emitting a beam and receiving the beam reflected from the movable piece to detect the quantity of the at least one disc.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: August 20, 2019
    Assignee: LITE-ON TECHNOLOGY CORPORATION
    Inventors: Jung-Fang Chang, Cheng-Wen Huang
  • Patent number: 10388316
    Abstract: An operating method of a disc pick-and-place device is provided. Discs can be picked up when each flexible rod is driven to rotate and make the disc pick-and-place device enter a first operating state and then a second operating state in which the first carrying portion is located at the disc releasing position and then at the disc holding position, and the second carrying portion is located at the disc releasing position in the first and second operating states. Discs can be unloaded when each flexible rod is driven to rotate and make the disc pick-and-place device enter a third operating state and then a fourth operating state in which the first carrying portion is located at the disc holding position and then at the disc releasing position, and the second carrying portion is located at the disc holding position in the third and fourth operating states.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: August 20, 2019
    Assignee: LITE-ON TECHNOLOGY CORPORATION
    Inventors: Jung-Fang Chang, Cheng-Wen Huang
  • Patent number: 10388308
    Abstract: An apparatus, according to one embodiment, includes: a transducer structure having: a lower shield, an upper shield above the lower shield, a current-perpendicular-to-plane sensor between the upper and lower shields, an electrical lead layer between the sensor and one of the shields, and a spacer layer between the electrical lead layer and the one of the shields. The upper and lower shields provide magnetic shielding. The electrical lead layer is in electrical communication with the sensor. A conductivity of the electrical lead layer is higher than a conductivity of the spacer layer. A width of the electrical lead layer in a cross-track direction is greater than the width of a free layer of the sensor.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: August 20, 2019
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Robert E. Fontana, Jr., Calvin S. Lo
  • Patent number: 10388307
    Abstract: A recording head has a magnetic write transducer proximate a side of a plasmonic gap waveguide. The magnetic write transducer has a first write pole section that tapers in a crosstrack direction and downtrack direction to form a tapered tip. The first write pole section includes a high-moment, seed layer on one side. A second write pole section is coupled to the first write pole section. The second write pole section extends a second distance away from the media-facing surface less than that of the first write pole section. A tip of the second write pole section is tapered in the crosstrack and downtrack directions.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: August 20, 2019
    Assignee: Seagate Technology LLC
    Inventors: Simon Bance, Choon How Gan, Mark Anthony Gubbins
  • Patent number: 10381026
    Abstract: A record player includes a turntable, a drive motor, a non-contact transmission mechanism, a tone arm, and a housing. The non-contact transmission mechanism includes a drive-side rotor and a magnetic member. The drive-side rotor is rotated by a driving force of the drive motor. The drive-side rotor is formed of a permanent magnet. The magnetic member is constituted of a soft magnetic body. The turntable is rotated according to the rotation of the drive-side rotor by an attraction force acting on the magnetic member from the permanent magnet.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: August 13, 2019
    Assignees: TEAC CORPORATION, PROSPINE CO., LTD.
    Inventors: Takao Tanishima, Hidetoshi Konno
  • Patent number: 10373651
    Abstract: A disk device includes a top cover and a disk medium with a recording surface. The top cover includes a center horizontal portion having a surface which extends from a center point of the disk medium along the recording surface to an outer peripheral portion, a curved portion having a surface which extends from the outer peripheral portion of the center horizontal portion in a direction away from the recording surface, and an outer horizontal portion having a surface which extends from the curved portion in a direction away from the center point and along the recording surface. The recording surface includes a first zone in which data is set to be written, and a second zone in which data is set not to be written, the second zone being disposed adjacent to the first zone on an outer edge side of the disk medium from the first zone.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: August 6, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Yuki Sato
  • Patent number: 10360938
    Abstract: Apparatus, methods, and systems for use in providing tangential (linear) tracking of a stylus on a record during play. In some embodiments, a tonearm assembly includes a tonearm with a laser emission source mounted thereto, and a receiver for receiving a light beam from the laser emission source and for splitting the light beam, and a movement actuator for adjusting a position of the tonearm based on a differential in light intensity between different portions of the split beam.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 23, 2019
    Inventors: Kioan Cheon, AnKuk Song
  • Patent number: 10360939
    Abstract: Disclosed herein are embodiments of a heat-assisted magnetic recording (HAMR) device comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide. The NFT comprises a core layer comprising an insulator, a first metal layer adjacent to the core layer, and a second layer adjacent to the first metal layer, wherein the second layer comprises a material that is substantially mechanically and thermally stable and thereby functions as a hard jacket to mitigate deformation of the NFT. The first metal layer may comprise a plasmonic metal, such as gold. The second layer may comprise tungsten, chromium, or a dielectric material.
    Type: Grant
    Filed: December 23, 2017
    Date of Patent: July 23, 2019
    Assignees: Western Digital Technologies, Inc., The Provost, Fellows, Scholars and other Members of Board of Trinity College Dublin
    Inventors: Alexander Krichevsky, Frank Bello, Christopher Wolf, Fenghua Zong, Daniel Wolf, David McCloskey, Kyle Ballantine, John Donegan
  • Patent number: 10354685
    Abstract: Disclosed herein are sliders that include segmented structures for trapping particles while providing adequate airflow to meet pitch stability objectives. A slider includes a vertical structure and a segmented structure disposed adjacent to the base of the vertical structure. The segmented structure comprises a plurality of particle-trapping segments and at least one gap, where each pair of two consecutive particle-trapping segments is separated by a gap. When the slider ABS faces upward, each gap is at a level that is higher than the floors of the particle-trapping segments on either side of the gap. In some embodiments, the segmented structure includes at least three particle-trapping segments and at least two gaps. In some embodiments, the lengths of the particle trapping segments account for at least eighty percent of the overall length of the segmented structure.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: July 16, 2019
    Assignee: Western Digital Technologies, Inc.
    Inventors: Yong Hu, Weidong Huang
  • Patent number: 10354682
    Abstract: A data reader may have a magnetoresistive stack with a magnetically free layer decoupled from a first shield by a cap. The cap can have one or more sub-layers respectively configured with a thickness of 4 nm or less as measured parallel to a longitudinal axis of the magnetoresistive stack on an air bearing surface.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: July 16, 2019
    Assignee: Seagate Technology LLC
    Inventors: Liwen Tan, ZhiGuo Ge, Shaun E. McKinlay, Jae-Young Yi, Stacey C. Wakeham
  • Patent number: 10354698
    Abstract: A rotation cover opening/closing mechanism includes a transparent plate-shaped cover, a shaft body, and a turning mechanism. The cover closes an opening portion formed in a part of an upper surface of device body. One end of the shaft body is perpendicularly fixed to the cover, and at least a part of the shaft body at the other end of the shaft body is inserted into the device body. The turning mechanism rotatably supports the shaft body inside the device body to allow turning of the cover around the shaft body in a plane parallel with the upper surface of the device body. The turning mechanism includes a limitation portion that limits a rotation angle of the shaft body to a fixed range such that the cover turns between a cover closing position where the cover closes the opening portion, and a cover opening position where the cover opens the opening portion.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: July 16, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Kazuyoshi Yoshida
  • Patent number: 10347301
    Abstract: A base member includes a recessed portion extending in radial directions and recessed upward from a lower surface of the base member and a hole extending through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface defining a loop-shaped surface in the radial direction. A connector is located on a lower side of the recessed portion to cover the hole portion. An adhesive is located between the connector and the recessed portion.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: July 9, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Masahiro Akagi, Takeshi Ohiro, Tomohiro Yoneda, Akihiro Yudate, Takayuki Ishino, Sho Nakamura