Patents by Inventor Rintaro KOHATA

Rintaro KOHATA 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).

  • Gear measurement method and gear measurement apparatus
    Patent number: 10288404
    Abstract: A gear measurement method and a gear measurement apparatus capable of evaluating meshing and fitting of a gear are provided. A measurement method for a gear includes a measurement step of measuring an actual movement locus of a ball that is moved along a tooth groove of the gear as a shape evaluation index for the gear. In the case of a VGR rack, tooth surfaces of rack teeth are constituted of curved surfaces. Thus, a reference pin for use in OPD cannot be disposed so as to be in line contact with the tooth surfaces, and the rack teeth cannot be measured. However, the ball can be disposed so as to be in point contact with the tooth surfaces, which enables a measurement of the rack teeth.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: May 14, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Misato Nakamori, Toshiya Morodome, Rintaro Kohata, Keiya Kitabayashi, Tetsuya Fujita
  • Gear Measurement Method and Gear Measurement Apparatus
    Publication number: 20170292822
    Abstract: A gear measurement method and a gear measurement apparatus capable of evaluating meshing and fitting of a gear are provided. A measurement method for a gear includes a measurement step of measuring an actual movement locus of a ball that is moved along a tooth groove of the gear as a shape evaluation index for the gear. In the case of a VGR rack, tooth surfaces of rack teeth are constituted of curved surfaces. Thus, a reference pin for use in OPD cannot be disposed so as to be in line contact with the tooth surfaces, and the rack teeth cannot be measured. However, the ball can be disposed so as to be in point contact with the tooth surfaces, which enables a measurement of the rack teeth.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 12, 2017
    Applicant: JTEKT CORPORATION
    Inventors: Misato NAKAMORI, Toshiya MORODOME, Rintaro KOHATA, Keiya KITABAYASHI, Tetsuya FUJITA