Patents by Inventor Hirotaka Sueyoshi

Hirotaka Sueyoshi 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 excavator
    Patent number: 9169622
    Abstract: A hydraulic excavator is provided, facilitating access to the lower side inside an engine compartment, allowing a maintenance job to be performed in a reasonable posture. The hydraulic excavator includes a revolving frame, an engine arranged on the revolving frame, and a counterweight arranged on the revolving frame, at the back side of the engine. A recess indented from the bottom face in the upward direction is formed at the counterweight. An opening is formed at the revolving frame for allowing a person to access from the lower side of the revolving frame to the space between the engine and the counterweight. The recess has a section overlapping with the opening, when viewed from the top.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 27, 2015
    Assignee: KOMATSU LTD.
    Inventors: Tomoyoshi Sho, Hirotaka Sueyoshi, Hayao Yoshino
  • HYDRAULIC EXCAVATOR
    Publication number: 20140262570
    Abstract: A hydraulic excavator is provided, facilitating access to the lower side inside an engine compartment, allowing a maintenance job to be performed in a reasonable posture. The hydraulic excavator includes a revolving frame, an engine arranged on the revolving frame, and a counterweight arranged on the revolving frame, at the back side of the engine. A recess indented from the bottom face in the upward direction is formed at the counterweight. An opening is formed at the revolving frame for allowing a person to access from the lower side of the revolving frame to the space between the engine and the counterweight. The recess has a section overlapping with the opening, when viewed from the top.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 18, 2014
    Applicant: KOMATSU LTD.
    Inventors: Tomoyoshi Sho, Hirotaka Sueyoshi, Hayao Yoshino