Patents by Inventor Yuuki ISHIGAKI

Yuuki ISHIGAKI 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: 10465762
    Abstract: A tubular vibration-damping device including: a vibration-damping device main unit wherein a main rubber elastic body is externally fixed to an inner shaft member; an outer tube member mounted on an outer peripheral face of the main unit; a pair of stopper protrusions protruding to opposite sides of a first axis-perpendicular direction at the inner shaft member; a cushion rubber layer fixed to the stopper protrusions; a stopper concavity provided in an inner peripheral face of the outer tube member to receive the stopper protrusions being inserted, with a wall opposed to the stopper protrusions in an axial direction, the first axis-perpendicular direction, and a second axis-perpendicular direction orthogonal thereto; and stoppers for all the directions constituted by contact of the wall and the stopper protrusions to limit relative displacement between the inner shaft member and the outer tube member.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: November 5, 2019
    Assignee: Sumitomo Riko Company Limited
    Inventors: Naoki Nishi, Yuuki Ishigaki
  • Publication number: 20180328433
    Abstract: A tubular vibration-damping device including: a vibration-damping device main unit wherein a main rubber elastic body is externally fixed to an inner shaft member; an outer tube member mounted on an outer peripheral face of the main unit; a pair of stopper protrusions protruding to opposite sides of a first axis-perpendicular direction at the inner shaft member; a cushion rubber layer fixed to the stopper protrusions; a stopper concavity provided in an inner peripheral face of the outer tube member to receive the stopper protrusions being inserted, with a wall opposed to the stopper protrusions in an axial direction, the first axis-perpendicular direction, and a second axis-perpendicular direction orthogonal thereto; and stoppers for all the directions constituted by contact of the wall and the stopper protrusions to limit relative displacement between the inner shaft member and the outer tube member.
    Type: Application
    Filed: February 14, 2018
    Publication date: November 15, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Naoki NISHI, Yuuki ISHIGAKI
  • Publication number: 20150276010
    Abstract: A vibration damping device including first and second mounting members elastically connected to each other by a main rubber elastic body, and a bracket member mounted to the second mounting member and providing a stopper for restricting displacement of the first mounting member relative to the second mounting member by means of abutment between the first mounting member and the bracket member. The second mounting member includes an input portion that faces the first mounting member at a given distance. The bracket member includes an abutting portion that faces the first mounting member with the input portion being interposed therebetween. An abutting rubber layer is provided on a surface of the input portion overlapped on the abutting portion. The stopper is constituted, by abutment between the first mounting member and the abutting portion via the input portion.
    Type: Application
    Filed: July 18, 2014
    Publication date: October 1, 2015
    Inventors: Satoki NAKAMURA, Hironori DAITO, Yuuki ISHIGAKI