Patents by Inventor Kiyokazu Okado

Kiyokazu Okado 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).

  • Sensor unit, torque detector, and electric power steering device
    Patent number: 9459165
    Abstract: A sensor unit includes a collector and a sensor housing. The collector faces a stator guiding a magnetic flux, with a void between the collector and the stator, and collectively attracts the magnetic flux guided by the stator. The sensor housing has a wall covering outside of the collector, and holds the collector. A clearance is formed between an opposite surface of the collector to a surface thereof facing the stator, and the wall of the sensor housing.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 4, 2016
    Assignee: SHOWA CORPORATION
    Inventors: Yohei Hama, Hiroyuki Muto, Kiyokazu Okado
  • SENSOR UNIT, TORQUE DETECTOR, AND ELECTRIC POWER STEERING DEVICE
    Publication number: 20150276519
    Abstract: A sensor unit includes a collector and a sensor housing. The collector faces a stator guiding a magnetic flux, with a void between the collector and the stator, and collectively attracts the magnetic flux guided by the stator. The sensor housing has a wall covering outside of the collector, and holds the collector. A clearance is formed between an opposite surface of the collector to a surface thereof facing the stator, and the wall of the sensor housing.
    Type: Application
    Filed: October 22, 2014
    Publication date: October 1, 2015
    Applicant: SHOWA CORPORATION
    Inventors: Yohei HAMA, Hiroyuki MUTO, Kiyokazu OKADO
  • Relative angle detection device, rotation angle detection device, relative angle detection method, and rotation angle detection method
    Patent number: 8810237
    Abstract: Disclosed is a relative angle detection device for detecting a relative angle between a first rotary shaft and a second rotary shaft, the relative angle detection device being provided with a first magnetic field sensing unit which outputs a value according to a magnetic field of a magnet, a second magnetic field sensing unit which outputs a value according to the magnetic field of the magnet and outputs a value different from the output value of the first magnetic field sensing unit even if being placed in the same magnetic field as that of the first magnetic field sensing unit, a correction unit which corrects one output value out of the output value of the first magnetic field sensing unit and the output value of the second magnetic field sensing unit in accordance with an amplitude ratio between magnetic field components orthogonal to each other in the magnetic field of the magnet, and a computing unit which computes the relative angle between the first rotary shaft and the second rotary shaft on the basi
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 19, 2014
    Assignee: Showa Corporation
    Inventors: Hiroyuki Muto, Kiyokazu Okado, Tsukasa Suzuki
  • RELATIVE ANGLE DETECTION DEVICE, ROTATION ANGLE DETECTION DEVICE, RELATIVE ANGLE DETECTION METHOD, AND ROTATION ANGLE DETECTION METHOD
    Publication number: 20120256619
    Abstract: Disclosed is a relative angle detection device for detecting a relative angle between a first rotary shaft and a second rotary shaft, the relative angle detection device being provided with a first magnetic field sensing unit which outputs a value according to a magnetic field of a magnet, a second magnetic field sensing unit which outputs a value according to the magnetic field of the magnet and outputs a value different from the output value of the first magnetic field sensing unit even if being placed in the same magnetic field as that of the first magnetic field sensing unit, a correction unit which corrects one output value out of the output value of the first magnetic field sensing unit and the output value of the second magnetic field sensing unit in accordance with an amplitude ratio between magnetic field components orthogonal to each other in the magnetic field of the magnet, and a computing unit which computes the relative angle between the first rotary shaft and the second rotary shaft on the basi
    Type: Application
    Filed: June 30, 2010
    Publication date: October 11, 2012
    Applicant: Showa Corporation
    Inventors: Hiroyuki Muto, Kiyokazu Okado, Tsukasa Suzuki