Patents by Inventor Yohei Michitsuji

Yohei Michitsuji 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).

  • Patent number: 9963157
    Abstract: A method of precisely measuring the track twist of a track on which a vehicle for commercial operation is travelling using this vehicle is to be provided. The method includes measuring a condition of a track (R) on which a vehicle for commercial operation (100) is travelling using this vehicle (100). The vehicle for commercial operation includes a bogie (10). The bogie includes four wheels (1) and primary springs (2) provided to correspond to the four wheels (1) and support the corresponding wheels (1), and is capable of measuring a wheel load of each of the four wheels (1). The method includes the steps of: measuring the wheel load of each wheel (1) (S13); calculating the displacement of each primary spring (2) based on the measured wheel load (S15); and calculating the track twist (h) of the track (R) based on the calculated displacements of the primary springs (2) (S18).
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: May 8, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yohei Michitsuji, Ryo Matsui, Yasuhiro Sato, Hirotaka Mori, Makoto Shimizu, Jun Kurihara, Tomohiro Seki, Hiroshi Obayashi, Masaaki Mizuno, Masuhisa Tanimoto
  • Publication number: 20160194013
    Abstract: A method of precisely measuring the track twist of a track on which a vehicle for commercial operation is travelling using this vehicle is to be provided. The method includes measuring a condition of a track (R) on which a vehicle for commercial operation (100) is travelling using this vehicle (100). The vehicle for commercial operation includes a bogie (10). The bogie includes four wheels (1) and primary springs (2) provided to correspond to the four wheels (1) and support the corresponding wheels (1), and is capable of measuring a wheel load of each of the four wheels (1). The method includes the steps of: measuring the wheel load of each wheel (1) (S13); calculating the displacement of each primary spring (2) based on the measured wheel load (S15); and calculating the track twist (h) of the track (R) based on the calculated displacements of the primary springs (2) (S18).
    Type: Application
    Filed: September 4, 2014
    Publication date: July 7, 2016
    Inventors: Yohei MICHITSUJI, Ryo MATSUI, Yasuhiro SATO, Hirotaka MORI, Makoto SHIMIZU, Jun KURIHARA, Tomohiro SEKI, Hiroshi OBAYASHI, Masaaki MIZUNO, Masuhisa TANIMOTO
  • Patent number: 8090492
    Abstract: The apparatus comprises a measured signal detector 11, a vehicle parameter obtainer 12, a sideslip angle temporary estimator 13, a sideslip angle differential corresponding value computer 14 and a sideslip angle real estimator 15. A sideslip angle temporary estimate value is computed from one or plural vehicle parameters including at least the mass. A sideslip angle differential corresponding value is computed from a measured signal and the vehicle parameters including no mass. A sideslip angle is derived from the sideslip angle temporary estimate value and the sideslip angle differential corresponding value. A sideslip can be detected without a steering angle detection mechanism.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: January 3, 2012
    Assignee: National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Masao Nagai, Yohei Michitsuji, Pongsathorn Raksincharoensak
  • Publication number: 20090276114
    Abstract: The apparatus comprises a measured signal detector 11, a vehicle parameter obtainer 12, a sideslip angle temporary estimator 13, a sideslip angle differential corresponding value computer 14 and a sideslip angle real estimator 15. A sideslip angle temporary estimate value is computed from one or plural vehicle parameters including at least the mass. A sideslip angle differential corresponding value is computed from a measured signal and the vehicle parameters including no mass. A sideslip angle is derived from the sideslip angle temporary estimate value and the sideslip angle differential corresponding value. A sideslip can be detected without a steering angle detection mechanism.
    Type: Application
    Filed: February 7, 2007
    Publication date: November 5, 2009
    Applicant: National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Masao Nagai, Yohei Michitsuji, Pongsathorn Raksincharoensak