Patents by Inventor Tomoaki SHINOZAKI

Tomoaki SHINOZAKI 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).

  • Hydraulic shock absorber and damping force generation mechanism
    Patent number: 11674558
    Abstract: The hydraulic shock absorber includes: a first cylinder containing fluid; a piston body including extension-side oil paths permitting flow of oil along with relative movement of the piston rod in the axial direction of the first cylinder; and an extension-side damping valve configured to open and close the extension-side oil paths of the piston body. The extension-side damping valve includes: a valve plate configured to close the extension-side oil paths by covering them and open them by deforming under pressure of oil; and a preload member configured to apply a preload to the valve plate. The preload member includes: a ring-shaped portion; and axis alignment portions configured to protrude from an outer periphery of the ring-shaped portion and contact the piston body to thereby perform axis alignment.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: June 13, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Gota Nakano, Tomoaki Shinozaki
  • HYDRAULIC SHOCK ABSORBER AND DAMPING FORCE GENERATION MECHANISM
    Publication number: 20200208707
    Abstract: The hydraulic shock absorber includes: a first cylinder containing fluid; a piston body including extension-side oil paths permitting flow of oil along with relative movement of the piston rod in the axial direction of the first cylinder; and an extension-side damping valve configured to open and close the extension-side oil paths of the piston body. The extension-side damping valve includes: a valve plate configured to close the extension-side oil paths by covering them and open them by deforming under pressure of oil; and a preload member configured to apply a preload to the valve plate. The preload member includes: a ring-shaped portion; and axis alignment portions configured to protrude from an outer periphery of the ring-shaped portion and contact the piston body to thereby perform axis alignment.
    Type: Application
    Filed: March 12, 2020
    Publication date: July 2, 2020
    Applicant: Showa Corporation
    Inventors: Gota NAKANO, Tomoaki SHINOZAKI