Patents by Inventor Yuzi Katayama

Yuzi Katayama 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 controller for a wheel crane
    Patent number: 5117950
    Abstract: A hydraulic shock absorber controller for a wheel crane having a suspension provided with hydraulic shock absorbers. The hydraulic shock absorber controller connects a line connected to the active chambers of the hydraulic shock absorbers and a line connected to the inert chambers of the same before the wheel crane starts running to enable the working fluid to flow rapidly from the compressed chamber to the expanding chamber of each hydraulic shock absorber so that the hydraulic shock absorbers are able to function properly for shock absorbing operation while the wheel crane is running.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: June 2, 1992
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takahiro Kobayashi, Kiyotsuna Kuchiki, Yuzi Katayama