Patents by Inventor Toshihiro INUZUKA

Toshihiro INUZUKA 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).

  • Cylinder apparatus
    Patent number: 11898615
    Abstract: A cylinder apparatus is provided with a stopper mechanism that operates when a piston rod extends and moves toward an upper end portion in an inner cylinder. This stopper mechanism includes a second cylinder provided movably relative to the piston rod and including a bottom portion on an upper end side in the inner cylinder and a cylinder portion extending from the bottom portion toward a lower end side, and a second piston provided so as to be able to move along with a movement of the piston rod to be fitted to the second cylinder. While being configured in this manner, the cylinder apparatus is configured in such a manner that a spring member 21 is provided between the second cylinder and a rod guide.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: February 13, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Toshihiro Inuzuka, Urban Anta Carlos, Atsushi Maeda, Koji Minamino, Aakash Patwa
  • CYLINDER APPARATUS
    Publication number: 20210246961
    Abstract: A cylinder apparatus is provided with a stopper mechanism that operates when a piston rod extends and moves toward an upper end portion in an inner cylinder. This stopper mechanism includes a second cylinder provided movably relative to the piston rod and including a bottom portion on an upper end side in the inner cylinder and a cylinder portion extending from the bottom portion toward a lower end side, and a second piston provided so as to be able to move along with a movement of the piston rod to be fitted to the second cylinder. While being configured in this manner, the cylinder apparatus is configured in such a manner that a spring member 21 is provided between the second cylinder and a rod guide.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 12, 2021
    Inventors: Toshihiro INUZUKA, Urban Anta CARLOS, Atsushi MAEDA, Koji MINAMINO, Aakash PATWA