Patents Examined by A. J. Heinz
  • Patent number: 7688548
    Abstract: A method and system for utilizing an interlocking dissimilar metal component in the formation of a hard disk drive is disclosed. The method provides a hard disk drive component having at least one interlocking dissimilar metal component, the at least one interlocking dissimilar metal component having at least two dissimilar metals on a single side. The interlocking dissimilar metal component is utilized to provide a similar materials weld location for coupling two dissimilar metals to a single side surface of the at least one interlocking dissimilar metal hard disk drive component.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: March 30, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Satya P. Arya
  • Patent number: 7688543
    Abstract: A disk drive that regenerates a desiccant within the drive. The drive includes a housing that encloses a head and a disk. A first desiccant is located adjacent to a hole of the housing. A second desiccant is coupled to the first desiccant. The second desiccant is also coupled to a source of heat. Heat is transferred through the second desiccant to the first desiccant. The heat evaporates fluid within the first desiccant. The evaporated fluid flows into and through the second desiccant. The evaporation of fluid regenerates the first desiccant so that is can continuously absorb humidity within the drive.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: March 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: SungChang Lee, Brian D. Strom
  • Patent number: 7684148
    Abstract: A magnetic head includes a wafer substrate and a conductive underlayer formed directly on the substrate. An insulating layer is formed above the conductive layer. A reader and/or writer thereof is formed above the insulating layer. Another magnetic head includes a substrate and an insulating underlayer formed above the substrate. A conductive underlayer is formed above the insulating underlayer. An insulating layer is formed above the conductive underlayer. At least one device is formed above the insulating layer, the at least one device being selected from a group consisting of readers, writers, and combinations thereof. Tape drive systems and methods for forming such heads are also presented.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: March 23, 2010
    Assignee: International Business Machines Corporation
    Inventor: Robert Glenn Biskeborn
  • Patent number: 7675713
    Abstract: A head suspension for a hard disk drive has a base attached to a carriage of the hard disk drive and is turned around a spindle. A load beam includes a rigid part and a resilient part which applies load onto a head at a front end of the load beam to write and read data to and from a disk arranged in the hard disk drive. The rigid part is supported to the base through the resilient part. A flexure is attached to at least the rigid part of the load beam and has read/write wiring patterns connected to the head. A recessed portion or a through-hole portion is formed in at least one of the load beam and the base for avoiding vibration contact of the flexure.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: March 9, 2010
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidenori Ogawa, Toshiki Ando
  • Patent number: 7672087
    Abstract: Provided is an MR effect element in which the magnetization of the pinned layer is stably fixed even after going through high temperature process. The MR effect element comprises: a non-magnetic intermediate layer; a pinned layer and a free layer stacked so as to sandwich the non-magnetic intermediate layer; an antiferromagnetic layer stacked to have a surface contact with the pinned layer, for fixing a magnetization of the pinned layer to a direction in-plane of the pinned layer and perpendicular to a track width direction; and hard bias layers provided on both sides in the track width direction of the free layer, for applying a bias field to the free layer, a product ?S×? of a saturation magnetostriction constant ?S of the pinned layer and an internal stress ? on a cross-section perpendicular to a layer surface of the hard bias layer being negative.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: March 2, 2010
    Assignee: TDK Corporation
    Inventors: Takayasu Kanaya, Katsuki Kurihara, Tetsuya Kuwashima
  • Patent number: 7672085
    Abstract: The invention provides a giant magneto-resistive effect device (CPP-GMR device) having a CPP (current perpendicular to plane) structure comprising a spacer layer, and a fixed magnetized layer and a free layer stacked one upon another with said spacer layer interleaved between them, with a sense current applied in a stacking direction, wherein the spacer layer comprises a first and a second nonmagnetic metal layer, each formed of a nonmagnetic metal material, and a semiconductor oxide layer interleaved between the first and the second nonmagnetic metal layer, wherein the semiconductor oxide layer that forms a part of the spacer layer is made of indium oxide (In2O3), or the semiconductor oxide layer contains indium oxide (In2O3) as its main component, and an oxide containing a tetravalent cation of SnO2 is contained in the indium oxide that is the main component.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: March 2, 2010
    Assignee: TDK Corporation
    Inventors: Shinji Hara, Kei Hirata, Koji Shimazawa, Yoshihiro Tsuchiya, Tomohito Mizuno
  • Patent number: 7667931
    Abstract: A head stack assembly of a disk drive has a hub including a side margin defining a channel for carrying VCM conductors at least partially around an angular offset such that the conductors are contained within a peripheral outline of the hub and the conductors can extend completely within an overmolding thickness. A first portion of a flexible interconnection biases against a side margin of the hub such that a rotation of the HSA causes a length of the first portion to change. A floating portion of length of the flexible extension follows a semicircular path between a first contact position on the hub and a second contact position on the support surface such that a floating loop diameter is defined between the contact positions. The hub and the support surface can be configured for changing the floating loop diameter with rotation to vary resilient biasing torque to the HSA.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: February 23, 2010
    Inventors: David D. Brause, Brian L. Rappel, Chad A. Bogacz
  • Patent number: 7667928
    Abstract: A write shield layer that forms a part of a thin-film magnetic head is set with respect to the widthwise full length W thereof lying substantially on an air bearing surface that is opposite to the recording medium such that when the full length W is trisected, the maximum thickness H1/3side thereof in a range of widthwise ?W size positioned at both ends thereof is larger than the average thickness Hm of the whole write shield layer from the air bearing surface up to the rear (H1/3side>Hm), so that the so-called external magnetic field resistance is improved, and inadvertent erasure of the information already recorded in the recording medium is avoided as much as possible. Besides, the PTP (pole tip protrusion) phenomenon arising from the generation of heat from coils, and external temperature changes can be held back.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: February 23, 2010
    Assignee: TDK Corporation
    Inventors: Hiraku Hirabayashi, Norikazu Ota
  • Patent number: 7663840
    Abstract: A method for fabricating a patterned recording medium includes providing a workpiece with a non-magnetic substrate and at least one overlying magnetic layer, laminating a thermal insulation barrier partially in a soft under layer of one of the at least one magnetic layers and forming a topographical pattern including a plurality of trenches in the soft under layer. Blocks of track triplets are formed between adjacent trenches that are magnetically and thermally insulated from other adjacent blocks of track triplets.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: February 16, 2010
    Assignee: Seagate Technology LLC
    Inventor: Michael Mallary
  • Patent number: 7660082
    Abstract: A magneto-resistive element has a lower layer, a tunnel barrier layer, and an upper layer. The lower layer, the tunnel barrier layer, and the upper layer are disposed adjacent to each other and are stacked in this order. A magnetization direction of either of the lower layer and the upper layer is fixed relative to an external magnetic field, and a magnetization direction of the other layer is variable in accordance with the external magnetic field. A crystalline portion and a non-crystalline portion co-exist in a plane that is parallel with a surface of the tunnel barrier layer.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: February 9, 2010
    Assignee: TDK Corporation
    Inventors: Takumi Uesugi, Satoshi Miura, Takeo Kagami
  • Patent number: 7660079
    Abstract: A head gimbal assembly includes a suspension including a suspension flexure. The suspension flexure includes a step plate mechanically formed in the suspension flexure. A micro-actuator is mounted to the step plate of the suspension flexure. The step plate is constructed and arranged to support the micro-actuator such that a substantially constant gap is maintained between a top support of the micro-actuator and the suspension flexure in use.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: February 9, 2010
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: MingGao Yao, Masashi Shiraishi, YiRu Xie, FengAn Huang
  • Patent number: 7656613
    Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: February 2, 2010
    Assignee: Headway Technologies, Inc.
    Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Shigeki Tanemura, Hironori Araki
  • Patent number: 7656619
    Abstract: A head includes a substrate, an undercoat material, a read structure, and a write structure. The undercoat material at least partially provides electrical insulation between the read structure and the substrate. The read structure allows for reading magnetic fields from a recording medium. The write structure allows for providing particular magnetic fields to the recording medium to write data to the recording medium. The read structure is located at least partially between a portion of the undercoat material and a portion of the write structure. The head further includes at least one of (i) a heating element located at least partially in the undercoat material for providing heat and (ii) a pedestal for at least partially providing thermal conduction between the read structure and the substrate. Also, a thickness of the undercoat material may be set for improving flying height adjustment efficiency.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: February 2, 2010
    Assignee: Seagate Technology LLC
    Inventors: Wentao Yan, Michael Mallary
  • Patent number: 7656612
    Abstract: The system includes a magnetic head which faces a recording medium. The magnetic head has a coil which generates magnetic fields. The magnetic head also has a pole layer which is formed using a pattern. The pole layer allows magnetic flux generated by the coil to write data onto the recording medium. The pole layer generates a write magnetic field for writing data onto the recording medium. A photomask is used to form the magnetic head. The photomask includes three regions. The first region has such a perimeter that a projection image thereof is shaped along a perimeter of an ideal shape of the top surface of the pole layer, and the second region touches the first region's perimeter. The third region suppresses deviation of the pole layer from its desired shape which may be caused by the effect of light reflected while the photoresist layer is exposed.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: February 2, 2010
    Assignee: Headway Technologies, Inc.
    Inventors: Yoshitaka Sasaki, Kazuo Ishizaki, Hiroyuki Itoh
  • Patent number: 7652854
    Abstract: A tunneling magneto-resistive element includes: a tunneling magneto-resistive film including an antiferromagnetic layer, a pinned layer, a barrier layer and a free layer; and a lower magnetic shielding film disposed below the tunneling magneto-resistive film with respect to a lamination direction. The barrier layer is constituted of magnesium oxide. The lower magnetic shielding film has a multi-layer structure including a crystalline layer and an amorphous layer disposed above the crystalline layer with respect to the lamination direction. The crystalline layer contains at least one crystal grain having a grain size of 500 nm or more.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: January 26, 2010
    Assignee: TDK Corporation
    Inventors: Takeo Kagami, Naoki Ohta, Kazuki Sato, Satoshi Miura
  • Patent number: 7646570
    Abstract: Current-perpendicular-to-plane (CPP) read sensors having constrained current paths made of lithographically-defined conductive vias with surrounding oxidized metal sublayers, and methods of making the same, are disclosed. In one illustrative example, at least part of a sensor stack structure which includes an electrically conductive spacer layer is formed. A metal (e.g. Ta) sublayer is then deposited over and adjacent the spacer layer, followed by one of an oxidation process, a nitridation process, and an oxynitridation process, to produce an insulator (e.g. TaOx) from the metal sublayer. The metal sublayer deposition and oxidation/nitridation/oxynitridation processes are repeated as necessary to form the insulator with a suitable thickness. Next, a resist structure which exposes one or more portions of the insulator is formed over the insulator. With the resist structure in place, exposed insulator materials are removed by etching to form one or more apertures through the insulator down to the spacer layer.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: January 12, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Hardayal Singh Gill, Jordan Asher Katine, Alexander Zeltser
  • Patent number: 7643255
    Abstract: One embodiment of the present invention is directed to a read head for a data storage device including a differential sensor for reading data from a data storage medium. The differential sensor includes a first and a second free layer. The magnetization of the free layers is anti-parallel. The read head also includes a first stabilization material disposed adjacent to the differential sensor. The first stabilization material includes a first hard magnet and a second hard magnet. The magnetization of the hard magnets is anti-parallel to each other. The read head also includes a second stabilization material disposed adjacent to the differential sensor. The second stabilization material includes a first hard magnet and a second hard magnet, wherein the magnetization of the hard magnets is anti-parallel to each other. The anti-parallel coupling of the first stabilization material and the second stabilization material enhances the anti-parallel magnetization of the free layers.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: January 5, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Hardayal (Harry) Singh Gill
  • Patent number: 7643244
    Abstract: Disclosed is a mobile Integrated Battery Powered Hard Disk Drive (IBP-HDD) equipped with USB OTG capabilities for direct connection to other USB devices, such as cell phones, PDAs, MP3 players, GPS, digital camcorders, digital cameras and other devices. These drives come in all form factors and combine high storage capacity and performance with low power consumption and portable operation. One component of the integrated drives is the base upon which all components and assemblies of the HDD have been mounted to produce a Drive-On-A-Substrate. A cover mounts to the base and separates each component and assembly into isolated compartments that can be evacuated of air and refilled with inert gases for improved performance and reliability. A first embodiment of the invention involves a method to manufacture a base. A second embodiment of the invention involves a method to manufacture an integrated battery powered hard disk drive portion on a base.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: January 5, 2010
    Inventor: James Bryant Money
  • Patent number: 7643249
    Abstract: A holding portion, on which a slider having a magnetic element for recording and/or replaying is held is provided on a second supporting portion of a supporting member, in which conductive patterns are formed. A plurality of fixing portions are formed in the holding portion and when the slider is sandwiched between the plurality of fixing portions, the slider is electrically connected with the conductive patterns.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: January 5, 2010
    Assignee: TDK Corporation
    Inventors: Michiharu Motonishi, Kanji Sawai
  • Patent number: 7636222
    Abstract: A disk drive includes a storage disk having a data surface, a head suspension assembly, an actuator assembly and an E-block. The actuator assembly moves the E-block relative to the storage disk. The E-block includes a first actuator arm and a second actuator arm. The first actuator arm supports the head suspension assembly while the second actuator arm supports no head suspension assemblies. The first actuator arm has a first upper surface having a first configuration. The second actuator arm has a second upper surface having a second configuration that is different than the first configuration and is tuned to decrease off-track displacement of the data transducer. In non-exclusive alternative embodiments, the actuator arms have substantially similar thicknesses, but have different perimeters, shapes, volumes and/or other properties.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: December 22, 2009
    Assignee: Maxtor Corporation
    Inventors: Stanislaw Dobosz, Larry E. Wittig