Patents by Inventor Masaharu Ooshima

Masaharu Ooshima 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).

  • Magnetostrictive stress sensor
    Patent number: 8692545
    Abstract: A magnetostrictive stress sensor (11, 12, 13, 14, 15, 16) includes: a magnetic member {20, (107, 108, 109, 110, 111, 112)} having a magnetostriction; a permanent magnet (30, 35, 113) adjacent to the magnetic member; a magnetic sensor (40, 104A, 104B) for detecting a leak magnetic flux on a side opposite to the permanent magnet with respect to the magnetic member, wherein the leak magnetic flux changes according to a stress acting on the magnetic member and the magnetic sensor detects the change of the leak magnetic flux, to thereby detect the stress acting on the magnetic member, and a direction (21, 108A, 109A) of the stress acting on the magnetic member is substantially orthogonal to a magnetizing direction (31, 31, 113A) of the permanent magnet.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: April 8, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Munekatsu Shimada, Hiroshi Sakurai, Yoshio Kawashita, Kiyohiro Uramoto, Toshimitsu Matsuoka, Masao Aihara, Mitsuaki Fujita, Masaharu Ooshima
  • MAGNETOSTRICTIVE STRESS SENSOR
    Publication number: 20100127698
    Abstract: A magnetostrictive stress sensor (11, 12, 13, 14, 15, 16) includes: a magnetic member {20, (107, 108, 109, 110, 111, 112)} having a magnetostriction; a permanent magnet (30, 35, 113) adjacent to the magnetic member; a magnetic sensor (40, 104A, 104B) for detecting a leak magnetic flux on a side opposite to the permanent magnet with respect to the magnetic member, wherein the leak magnetic flux changes according to a stress acting on the magnetic member and the magnetic sensor detects the change of the leak magnetic flux, to thereby detect the stress acting on the magnetic member, and a direction (21, 108A, 109A) of the stress acting on the magnetic member is substantially orthogonal to a magnetizing direction (31, 31, 113A) of the permanent magnet.
    Type: Application
    Filed: February 27, 2008
    Publication date: May 27, 2010
    Inventors: Munekatsu Shimada, Hiroshi Sakurai, Yoshio Kawashita, Kiyohiro Uramoto, Toshimitsu Matsuoka, Masao Aihara, Mitsuaki Fujita, Masaharu Ooshima