Patents by Inventor Taro Sonoda

Taro Sonoda 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).

  • Magnetic disk apparatus
    Patent number: 5012359
    Abstract: This invention relates to a magnetic disk apparatus equipped with magnetic bearings for supporting a spindle without contact by a magnetic attracting or repulsing force. The magnetic disk apparatus prevents occurrence of oscillation of magnetic disks and accomplishes high accuracy positioning.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: April 30, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Kohno, Osami Matsushita, Michiaki Ida, Katsuaki Kikuchi, Taro Sonoda, Yuzo Yamaguchi
  • Carriage support structure
    Patent number: 4752849
    Abstract: A carriage in a position control mechanism using an access mechanism of a magnetic disk device or a linear motor is supported linearly movable in parallel to a positioning reference plane on a stationary side by means of a carriage support mechanism. The carriage support mechanism is composed of support units rigidly engaged with the carriage or the stationary side and support units elastically engaged with the carriage or the stationary side. The rigidly and elastically engaged units are selectively arranged so that the carriage is prevented from being inclined by thermal deformations due to the heat generation caused upon the driving of the carriage.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: June 21, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Shinobu Yoshida, Kihachiro Tanaka, Taro Sonoda