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).
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Patent number: 8179632Abstract: 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: GrantFiled: November 13, 2006Date of Patent: May 15, 2012Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.Inventors: Yi Zhao Yao, Shaoyong Liu, Masaki Ootsuka, Yuuichi Ootani, Jirou Kaneko
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Patent number: 7944644Abstract: 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: GrantFiled: September 19, 2007Date of Patent: May 17, 2011Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.Inventors: Jiro Kaneko, Masaki Ootsuka, Yuuichi Ootani, Kazuya Sekiguchi
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Publication number: 20080112074Abstract: 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: ApplicationFiled: November 13, 2006Publication date: May 15, 2008Inventors: Yi Zhao Yao, Shaoyong Liu, Masaki Ootsuka, Yuuichi Ootani, Jirou Kaneko
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Publication number: 20080068746Abstract: 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: ApplicationFiled: September 19, 2007Publication date: March 20, 2008Applicant: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Jiro Kaneko, Masaki Ootsuka, Yuuichi Ootani, Kazuya Sekiguchi
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Patent number: 7209309Abstract: 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: GrantFiled: August 18, 2004Date of Patent: April 24, 2007Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
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Publication number: 20070070550Abstract: 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: ApplicationFiled: November 30, 2006Publication date: March 29, 2007Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
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Publication number: 20050013057Abstract: 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: ApplicationFiled: August 18, 2004Publication date: January 20, 2005Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
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Patent number: 6798605Abstract: 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: GrantFiled: August 15, 2001Date of Patent: September 28, 2004Assignee: Hitachi, Ltd.Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu
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Patent number: 6690543Abstract: 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: GrantFiled: November 14, 2001Date of Patent: February 10, 2004Assignee: Hitachi, Ltd.Inventors: Masayuki Kurita, Masaaki Matsumoto, Junguo Xu, Hidekazu Kohira, Yuuichi Ootani, Hideaki Tanaka, Yoshihiko Miyake, Takeshi Harada
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Publication number: 20020057532Abstract: 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: ApplicationFiled: November 14, 2001Publication date: May 16, 2002Inventors: Masayuki Kurita, Masaaki Matsumoto, Junguo Xu, Hidekazu Kohira, Yuuichi Ootani, Hideaki Tanaka, Yoshihiko Miyake, Takeshi Harada
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Publication number: 20020054447Abstract: 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: ApplicationFiled: August 15, 2001Publication date: May 9, 2002Inventors: Masayuki Kurita, Masaaki Matsumoto, Yuuichi Ootani, Yoshihiko Miyake, Shinsuke Higuchi, Hideaki Tanaka, Junguo Xu