Patents by Inventor Naoya KAMURA

Naoya KAMURA 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).

  • Rolling component, bearing, and method of manufacturing the same
    Patent number: 11421732
    Abstract: A rolling component has a surface. The rolling component includes a fiber flow. The surface has an Ra of 0.1 ?m or less, an Rsk<0, and a compressive residual stress of 700 MPa or more. The surface and the fiber flow form an angle of 15° or more.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: August 23, 2022
    Assignee: NTN CORPORATION
    Inventors: Takahiro Okada, Takumi Fujita, Naoya Kamura, Yoshinori Sugisaki
  • Rolling component, bearing, and method of manufacturing the same
    Patent number: 11371559
    Abstract: A rolling component has a surface. The rolling component includes a fiber flow and a non-metallic inclusion. In a region from the surface of the rolling component to a first depth, a gap between the non-metallic inclusion and a member forming the rolling component is filled. The first depth is 50 ?m or more. The surface and the fiber flow form an angle of 15° or more.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: June 28, 2022
    Assignee: NTN CORPORATION
    Inventors: Takahiro Okada, Naoya Kamura, Takumi Fujita
  • Rolling Component, Bearing, and Method of Manufacturing the Same
    Publication number: 20210071711
    Abstract: A rolling component has a surface. The rolling component includes a fiber flow and a non-metallic inclusion. In a region from the surface of the rolling component to a first depth, a gap between the non-metallic inclusion and a member forming the rolling component is filled. The first depth is 50 ?m or more. The surface and the fiber flow form an angle of 15° or more.
    Type: Application
    Filed: March 8, 2019
    Publication date: March 11, 2021
    Inventors: Takahiro OKADA, Naoya KAMURA, Takumi FUJITA
  • ROLLING COMPONENT, BEARING, AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20200362912
    Abstract: There are provided: a rolling component which eliminates a cause of premature failure of a bearing at low cost, or which has a satisfactory rolling fatigue life if there is a cause of premature failure of a bearing; a bearing including the rolling component; and a method of manufacturing the same. A rolling component has a surface. The rolling component includes a fiber flow. The surface has an Ra of 0.1 ?m or less, an Rsk<0, and a compressive residual stress of 700 MPa or more. The surface and the fiber flow form an angle of 15° or more.
    Type: Application
    Filed: November 21, 2018
    Publication date: November 19, 2020
    Inventors: Takahiro OKADA, Takumi FUJITA, Naoya KAMURA, Yoshinori SUGISAKI