Patents by Inventor Tetsuzo Toya

Tetsuzo Toya 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).

  • Servo track writer for magnetic disks
    Patent number: 6590732
    Abstract: A disk assembly, which includes a large number of magnetic disks arranged in layers on a disk loading hub, is detachably mounted on a rotating shaft of an air spindle motor that is set on a base. The base has thereon a movable table capable of reciprocation. The movable table carries thereon a rotary positioner for rotating and positioning a stacked head assembly, which is formed of a large number of magnetic heads stacked in layers, and a plurality of ramps for loading into and unloading the magnetic heads from the magnetic disks. The distance between the respective rotating shafts of the air spindle motor and the rotary positioner can be adjusted by moving the movable table.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: July 8, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuyoshi Kitagawa, Hiroyuki Kuno, Yasuo Motegi, Tetsuzo Toya
  • Information writing device
    Publication number: 20010010607
    Abstract: A disk assembly, which includes a large number of magnetic disks arranged in layers on a disk loading hub, is detachably mounted on a rotating shaft of an air spindle motor that is set on a base. The base has thereon a movable table capable of reciprocation. The movable table carries thereon a rotary positioner for rotating and positioning a stacked head assembly, which is formed of a large number of magnetic heads stacked in layers, and a plurality of ramps for loading into and unloading the magnetic heads from the magnetic disks. The distance between the respective rotating shafts of the air spindle motor and the rotary positioner can be adjusted by moving the movable table.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 2, 2001
    Inventors: Katsuyoshi Kitagawa, Hiroyuki Kuno, Yasuo Motegi, Tetsuzo Toya