Patents by Inventor Naoto SHINKAWA

Naoto SHINKAWA 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).

  • Publication number: 20230283126
    Abstract: According to one embodiment, a rotating electric machine rotor includes a shaft rotating about the center axis line, a rotor core coaxially fixed to the shaft, and a polyhedral permanent magnet housed in a slot portion passing through the rotor core in a direction along the center axis line. The permanent magnet has a face portion through which adjacent magnets can face and contact each other in the slot portion in which the permanent magnet is housed. The face portion is provided with a surface layer portion having an electric resistance value that is two or more times the electric resistance value of the face portion of the permanent magnet.
    Type: Application
    Filed: May 12, 2023
    Publication date: September 7, 2023
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Naoya SASAKI, Naoto SHINKAWA, Masakatsu MATSUBARA
  • Patent number: 10997440
    Abstract: According to one embodiments, a wearing detection apparatus includes a restraint device, an imaging device, a control unit, and an output device. The restraint device is to restrain a passenger seated in a seat, and includes a strap an exposed area of which changes when the strap is being worn and not worn. The imaging device captures an image of the restraint device including the strap. The control unit detects from the image captured by the imaging device, a recognition image corresponding to a recognition member provided in an area that is exposed when the strap is worn. The output device outputs a result of detection of the recognition image.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: May 4, 2021
    Assignee: Toshiba Digital Solutions Corporation
    Inventors: Akifumi Ohno, Tatsuei Hoshino, Tamotsu Masuda, Satoshi Maesugi, Kousuke Imai, Naoto Shinkawa
  • Publication number: 20190197326
    Abstract: According to one embodiments, a wearing detection apparatus includes a restraint device, an imaging device, a control unit, and an output device. The restraint device is to restrain a passenger seated in a seat, and includes a strap an exposed area of which changes when the strap is being worn and not worn. The imaging device captures an image of the restraint device including the strap. The control unit detects from the image captured by the imaging device, a recognition image corresponding to a recognition member provided in an area that is exposed when the strap is worn. The output device outputs a result of detection of the recognition image.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Applicant: Toshiba Digital Solutions Corporation
    Inventors: Akifumi OHNO, Tatsuei HOSHINO, Tamotsu MASUDA, Satoshi MAESUGI, Kousuke IMAI, Naoto SHINKAWA
  • Patent number: 10259491
    Abstract: An electric power steering apparatus that drive-controls a motor by an inverter, and a motor release-switch is connected between the inverter and the motor, comprising: a control section to detect an assist state on a driving control system and to ON/OFF-switch a control of the inverter based on a detection result; a motor rotational number detecting section to detect a rotational number of the motor; an energy calculating section to calculate an energy of a motor back-EMF and a regenerative current based on the rotational number; and a judging section to compare the energy with an area of safety operation of the motor release-switch and to OFF-switch the d motor release-switch when the energy becomes within the area of safety operation. As occasion demands, the area of safety operation is calculated with the temperature.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: April 16, 2019
    Assignee: NSK LTD.
    Inventors: Naoto Shinkawa, Shigeru Fukinuki, Shin Kumagai, Shigeru Shimakawa, Teruyoshi Kogure
  • Publication number: 20180154931
    Abstract: [Problem] An object of the present invention is to provide a motor control apparatus that, with a high reliability, protects the motor release-switch comprising the semiconductor switching elements in small size and an electric power steering apparatus provided the same.
    Type: Application
    Filed: May 8, 2015
    Publication date: June 7, 2018
    Applicant: NSK Ltd.
    Inventors: Naoto SHINKAWA, Shigeru FUKINUKI, Shin KUMAGAI, Shigeru SHIMAKAWA, Teruyoshi KOGURE
  • Patent number: 9402304
    Abstract: There is provided a printed circuit substrate and a noise suppression structure capable of minimizing constraint on a component layout on a substrate and suppressing noise. The printed circuit substrate includes conductive patterns of odd numbered layers and conductive patterns of even numbered layers which are alternately arranged in a vertical direction and hold an insulating layer between each layer. Portions excepting predetermined areas for connecting a first through-hole and predetermined areas for insulating from a second through-hole in the conductive patterns of the odd numbered layers have a same shape as portions excepting predetermined areas for connecting the second through-hole and predetermined areas for insulating the first through-hole in the conductive patterns of the even numbered layers, and the portions are laminated on one another at the same position in the vertical direction.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: July 26, 2016
    Assignee: NSK Ltd.
    Inventors: Naoto Shinkawa, Shigeru Fukinuki
  • Publication number: 20150334822
    Abstract: There is provided a printed circuit substrate and a noise suppression structure capable of minimizing constraint on a component layout on a substrate and suppressing noise. The printed circuit substrate includes conductive patterns of odd numbered layers and conductive patterns of even numbered layers which are alternately arranged in a vertical direction and hold an insulating layer between each layer. Portions excepting predetermined areas for connecting a first through-hole and predetermined areas for insulating from a second through-hole in the conductive patterns of the odd numbered layers have a same shape as portions excepting predetermined areas for connecting the second through-hole and predetermined areas for insulating the first through-hole in the conductive patterns of the even numbered layers, and the portions are laminated on one another at the same position in the vertical direction.
    Type: Application
    Filed: January 9, 2014
    Publication date: November 19, 2015
    Inventors: Naoto SHINKAWA, Shigeru FUKINUKI