Patents by Inventor Ryosuke Hada

Ryosuke Hada 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).

  • Manufacturing method for tapered roller, and tapered roller bearing
    Patent number: 9771979
    Abstract: The present invention provides a manufacturing method by which a good quality tapered roller can be obtained at low cost. An intermediate raw material (17) is obtained by grinding an outer-circumferential surface (15) of a preliminary intermediate raw material (14), which is obtained by plastic working of a metallic circular column shaped raw material, using a grindstone (16), with a large diameter-side end surface (10) of the intermediate raw material (14) as a reference. A final intermediate raw material (21a) is obtained by grinding the large diameter-side end surface (10) of the intermediate raw material (17) using a grindstone (20), and grinding the intermediate raw material (17) by a predetermined length instead of setting the intermediate raw material (17) to a predetermined length.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 26, 2017
    Assignee: NSK Ltd.
    Inventors: Ryosuke Hada, Sotaro Yamashita
  • MANUFACTURING METHOD FOR TAPERED ROLLER, AND TAPERED ROLLER BEARING
    Publication number: 20160215821
    Abstract: The present invention provides a manufacturing method by which a good quality tapered roller can be obtained at low cost. An intermediate raw material (17) is obtained by grinding an outer-circumferential surface (15) of a preliminary intermediate raw material (14), which is obtained by plastic working of a metallic circular column shaped raw material, using a grindstone (16), with a large diameter-side end surface (10) of the intermediate raw material (14) as a reference. A final intermediate raw material (21a) is obtained by grinding the large diameter-side end surface (10) of the intermediate raw material (17) using a grindstone (20), and grinding the intermediate raw material (17) by a predetermined length instead of setting the intermediate raw material (17) to a predetermined length.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 28, 2016
    Inventors: Ryosuke Hada, Sotaro Yamashita