Patents by Inventor Yuuichi Ootani

Yuuichi Ootani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8179632
    Abstract: A disk drive spoiler for reducing particle accumulation in a hard disk drive is provided. The spoiler includes a body portion for directing airflow generated by a rotating disk, the rotating disk comprising a middle diameter and an outer diameter wherein the body portion directs airflow away from the outer diameter of the disk. The spoiler also includes an end portion for directing airflow away from the middle diameter of the disk towards the outer diameter of the disk wherein the body portion comprises a substantially similar width between the middle diameter and the outer diameter.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: May 15, 2012
    Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.
    Inventors: Yi Zhao Yao, Shaoyong Liu, Masaki Ootsuka, Yuuichi Ootani, Jirou Kaneko
  • Patent number: 7944644
    Abstract: Embodiments of the present invention effectively control utilizing a spoiler, the windage vibration of a magnetic head caused by the airflow generated in accordance with rotation of a magnetic disk, while reducing the dust flowing in on the downstream side of the spoiler. According to one embodiment, a spoiler is provided with wings facing a plurality of magnetic disks and a supporting section for the wings is disposed on the upstream side of a head stack assembly in the airflow direction in accordance with the rotation of the magnetic disks. Further, the wings each extend in a direction from the outer circumferences of the magnetic disks towards the spindle shaft while reducing the width of the wing, and is formed to have the width of the wing in a range of 2.7% through 2.9% of the circumferential length of the magnetic disks in a range of two thirds of the length of the wing in a direction towards the spindle shaft from a region located at the outer circumferences of the magnetic disks.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: May 17, 2011
    Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.
    Inventors: Jiro Kaneko, Masaki Ootsuka, Yuuichi Ootani, Kazuya Sekiguchi
  • Publication number: 20080112074
    Abstract: A disk drive spoiler for reducing particle accumulation in a hard disk drive is provided. The spoiler includes a body portion for directing airflow generated by a rotating disk, the rotating disk comprising a middle diameter and an outer diameter wherein the body portion directs airflow away from the outer diameter of the disk. The spoiler also includes an end portion for directing airflow away from the middle diameter of the disk towards the outer diameter of the disk wherein the body portion comprises a substantially similar width between the middle diameter and the outer diameter.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 15, 2008
    Inventors: Yi Zhao Yao, Shaoyong Liu, Masaki Ootsuka, Yuuichi Ootani, Jirou Kaneko
  • Publication number: 20080068746
    Abstract: Embodiments of the present invention effectively control utilizing a spoiler, the windage vibration of a magnetic head caused by the airflow generated in accordance with rotation of a magnetic disk, while reducing the dust flowing in on the downstream side of the spoiler. According to one embodiment, a spoiler is provided with wings facing a plurality of magnetic disks and a supporting section for the wings is disposed on the upstream side of a head stack assembly in the airflow direction in accordance with the rotation of the magnetic disks. Further, the wings each extend in a direction from the outer circumferences of the magnetic disks towards the spindle shaft while reducing the width of the wing, and is formed to have the width of the wing in a range of 2.7% through 2.9% of the circumferential length of the magnetic disks in a range of two thirds of the length of the wing in a direction towards the spindle shaft from a region located at the outer circumferences of the magnetic disks.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 20, 2008
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Jiro Kaneko, Masaki Ootsuka, Yuuichi Ootani, Kazuya Sekiguchi
  • Patent number: 7209309
    Abstract: A magnetic disk apparatus includes a rotation mechanism for driving a magnetic disk, a magnetic head slider being floated in close proximity to a surface of the magnetic disk, a recording/reproduction element for performing recording and playback of information, a drive unit for causing a distance between the record/reproduction element and the magnetic disk to change, and an arrangement to effect position determination of the magnetic head slider, wherein the apparatus has a detection unit for permitting the drive unit to gradually reduce the distance between the record/reproduction element and the magnetic disk and for detecting occurrence of contact therebetween, and a control unit for controlling the drive unit in such a way as to cause, the record/reproduction element to shift in position by a fixed amount to thereby let the distance between this element and magnetic disk increase accordingly.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: April 24, 2007
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
  • Publication number: 20070070550
    Abstract: A disk apparatus including: a head slider for being floated above a disk; a record/reproduction element provided at the head slider for recording and/or reproducing information on and/or from the disk; a displacer for shifting the record/reproduction element to approach closer to, or retreat farther away from, the disk; and a controller for controlling the displacer to shift the record/reproduction element in a direction to retreat rather from the disk, if the record/reproduction element has contacted the disk.
    Type: Application
    Filed: November 30, 2006
    Publication date: March 29, 2007
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
  • Publication number: 20050013057
    Abstract: A magnetic disk apparatus includes a rotation mechanism for driving a magnetic disk, a magnetic head slider being floated in close proximity to a surface of the magnetic disk, a recording/reproduction element for performing recording and playback of information, a drive unit for causing a distance between the record/reproduction element and the magnetic disk to change, and means for performing position determination of the magnetic head slider, wherein the apparatus has a detection unit for permitting the drive unit to gradually reduce the distance between the record/reproduction element and the magnetic disk and for detecting occurrence of contact therebetween, and a control unit for controlling the drive unit in such a way as to cause, the record/reproduction element to shift in position by a fixed amount to thereby let the distance between this element and magnetic disk increase accordingly.
    Type: Application
    Filed: August 18, 2004
    Publication date: January 20, 2005
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
  • Patent number: 6798605
    Abstract: A magnetic disk apparatus includes a rotation mechanism for driving a magnetic disk, a magnetic head slider being floated in close proximity to a surface of the magnetic disk, a recording/reproduction element for performing recording and playback of information, a drive unit for causing a distance between the record/reproduction element and the magnetic disk to change, and means for performing position determination of the magnetic head slider, wherein the apparatus has a detection unit for permitting the drive unit to gradually reduce the distance between the record/reproduction element and the magnetic disk and for detecting occurrence of contact therebetween, and a control unit for controlling the drive unit in such a way as to cause, the record/reproduction element to shift in position by a fixed amount to thereby let the distance between this element and magnetic disk increase accordingly.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: September 28, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
  • Patent number: 6690543
    Abstract: Employed is a structure for moving by a micro-actuator not a read/write element but an air-bearing surface pad. The air-bearing surface pad is arranged nearer to the leading end than the read/write element. This arrangement allows the read/write element portion to have a sufficient size, making it possible to mount the currently used read/write element and associated wiring structure. The individual adjustment of a flying height leads to the increased recording density. Moving the read/write element away from the disk during loading/unloading operations can enhance reliability.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: February 10, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Junguo Xu, Hidekazu Kohira, Yuuichi Ootani, Hideaki Tanaka, Yoshihiko Miyake, Takeshi Harada
  • Publication number: 20020057532
    Abstract: Employed is a structure for moving by a micro-actuator not a read/write element but an air-bearing surface pad. The air-bearing surface pad is arranged nearer to the leading end than the read/write element. This arrangement allows the read/write element portion to have a sufficient size, making it possible to mount the currently used read/write element and associated wiring structure. The individual adjustment of a flying height leads to the increased recording density. Moving the read/write element away from the disk during loading/unloading operations can enhance reliability.
    Type: Application
    Filed: November 14, 2001
    Publication date: May 16, 2002
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Junguo Xu, Hidekazu Kohira, Yuuichi Ootani, Hideaki Tanaka, Yoshihiko Miyake, Takeshi Harada
  • Publication number: 20020054447
    Abstract: A magnetic disk apparatus includes a rotation mechanism for driving a magnetic disk, a magnetic head slider being floated in close proximity to a surface of the magnetic disk, a recording/reproduction element for performing recording and playback of information, a drive unit for causing a distance between the record/reproduction element and the magnetic disk to change, and means for performing position determination of the magnetic head slider, wherein the apparatus has a detection unit for permitting the drive unit to gradually reduce the distance between the record/reproduction element and the magnetic disk and for detecting occurrence of contact therebetween, and a control unit for controlling the drive unit in such a way as to cause, the record/reproduction element to shift in position by a fixed amount to thereby let the distance between this element and magnetic disk increase accordingly.
    Type: Application
    Filed: August 15, 2001
    Publication date: May 9, 2002
    Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu