Patents by Inventor Yuya Tsurumaki

Yuya Tsurumaki 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).

  • Patent number: 10471522
    Abstract: A drill has a thinning rake face formed in the front end. An intersection ridgeline between the thinning rake face and the tip flank face is the thinning edge. On the opposite side of the rotation direction, the first and second thinning wall surfaces (6b, 6c) and are formed. Viewed from the front, an intersection angle between the thinning edge (4a) and the first thinning ridgeline is larger than 95°. The second thinning ridgeline (L2) is bent to the opposite side of the rotation direction. The thinning edge and the first thinning ridgeline are connected via a concave curve line. The first and second thinning wall surfaces are connected via a concave surface, and a curvature radius of the concave curve line is smaller than a curvature radius of the concave surface.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: November 12, 2019
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Tadashi Yamamoto, Kazuya Yanagida, Yuya Tsurumaki
  • Publication number: 20180236568
    Abstract: A drill has a thinning rake face formed in the front end. An intersection ridgeline between the thinning rake face and the tip flank face is the thinning edge. On the opposite side of the rotation direction, the first and second thinning wall surfaces (6b, 6c) and are formed. Viewed from the front, an intersection angle between the thinning edge (4a) and the first thinning ridgeline is larger than 95°. The second thinning ridgeline (L2) is bent to the opposite side of the rotation direction. The thinning edge and the first thinning ridgeline are connected via a concave curve line. The first and second thinning wall surfaces are connected via a concave surface, and a curvature radius of the concave curve line is smaller than a curvature radius of the concave surface.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 23, 2018
    Applicants: MITSUBISHI MATERIALS CORPORATION, MITSUBISHI MATERIALS CORPORATION
    Inventors: Tadashi Yamamoto, Kazuya Yanagida, Yuya Tsurumaki