Patents by Inventor Kenichirou Hidaka

Kenichirou Hidaka 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).

  • Power steering apparatus having failure detection device for rotation angle sensors
    Patent number: 7743875
    Abstract: A power steering apparatus has a steering power assisting system coupled to tire wheels and a variable gear transfer system coupled to a steering wheel. The steering power assisting system includes a torsion bar rotation sensor and a first actuator rotation sensor to calculate a first pinion angle and a second pinion angle based on the detected rotation angles, respectively. The variable gear transfer system includes a steering sensor and a second actuator rotation sensor to calculate a third pinion angle based on the detected rotation angles. Sensor failure is detected by comparing the calculated first, second and third pinion angles.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: June 29, 2010
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichirou Hidaka, Junko Hidaka, legal representative, Nobuhiko Makino, Takahiro Kojo, Theerawat Limpibunterng
  • Storage check for locking vehicle steering system
    Patent number: 7604089
    Abstract: A storage part stores an initial sum, which is obtained by summing a steering angle of a steering wheel and a rotational angle of an electric actuator before checking of unlocking of a transmission ratio variable mechanism by a computer part. The computer part determines that the storage part is abnormal when a sum, which is obtained by summing the steering angle of the steering wheel and the rotational angle of the electric actuator after the checking of the unlocking of the transmission ratio variable mechanism by the computer part, differs from the initial sum, which is retrieved from the storage part.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: October 20, 2009
    Assignee: Denso Corporation
    Inventors: Kenichirou Hidaka, Hisashi Kameya
  • POWER STEERING APPARATUS HAVING FAILURE DETECTION DEVICE FOR ROTATION ANGLE SENSORS
    Publication number: 20090026004
    Abstract: A power steering apparatus has a steering power assisting system coupled to tire wheels and a variable gear transfer system coupled to a steering wheel. The steering power assisting system includes a torsion bar rotation sensor and a first actuator rotation sensor to calculate a first pinion angle and a second pinion angle based on the detected rotation angles, respectively. The variable gear transfer system includes a steering sensor and a second actuator rotation sensor to calculate a third pinion angle based on the detected rotation angles. Sensor failure is detected by comparing the calculated first, second and third pinion angles.
    Type: Application
    Filed: July 25, 2008
    Publication date: January 29, 2009
    Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichirou Hidaka, Nobuhiko Makino, Takahiro Kojo, Theerawat Limpibunterng, Junko Hidaka
  • Vehicle steering system
    Publication number: 20080006470
    Abstract: A storage part stores an initial sum, which is obtained by summing a steering angle of a steering wheel and a rotational angle of an electric actuator before checking of unlocking of a transmission ratio variable mechanism by a computer part. The computer part determines that the storage part is abnormal when a sum, which is obtained by summing the steering angle of the steering wheel and the rotational angle of the electric actuator after the checking of the unlocking of the transmission ratio variable mechanism by the computer part, differs from the initial sum, which is retrieved from the storage part.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 10, 2008
    Applicant: DENSO CORPORATION
    Inventors: Kenichirou Hidaka, Hisashi Kameya