Patents by Inventor Hisahiro Ando

Hisahiro Ando 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).

  • Method of making a magnetic rotation sensor
    Patent number: 5351387
    Abstract: This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: October 4, 1994
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Hitoshi Iwata, Katsuhiro Minami, Hisahiro Ando, Hisashi Hirose, Shigeru Iguchi
  • Magnetic rotation sensor for rotary shaft
    Patent number: 5239263
    Abstract: This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: August 24, 1993
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Hitoshi Iwata, Katsuhiro Minami, Hisahiro Ando, Hisashi Hirose, Shigeru Iguchi
  • Actuator for use in emergency situation of vehicle
    Patent number: 5217252
    Abstract: An actuator for use in an air bag device which is inflated by a gas as a firing pin is moved by the movement of an inertia member to actuate a gas generator and in a preloader of a webbing retractor actuated by the gas. A contact is provided for outputting an electrical signal by being turned on at the time of movement of the inertia member or movement of the firing pin. Accordingly, by providing another gas generating means adapted to be actuated in correspondence with an output of this contact, it is possible to actuate a plurality of air bag devices or preloaders.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: June 8, 1993
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Teruhiko Kawaguchi, Keiichi Tamura, Hisahiro Ando, Tamotsu Horiba, Kenichi Kinoshita