Patents by Inventor Suguru Shiiguchi

Suguru Shiiguchi 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: 12091836
    Abstract: A working machine includes: a machine body; an operator's seat; an operation device to pivot on a pivot shaft that extends in a width direction; and a working device to be operated using the operation device. The operation device includes an operation lever and a control valve to be operated using the operation lever and connected to hydraulic hoses. The control valve includes a valve member to be actuated by operating the operation lever, and a block containing fluid passages through which fluid selectively flows upon actuation of the valve member. The fluid passages bend such that first ports in an upper surface of the block facing the valve member and second ports in a peripheral surface extending from a periphery of the upper surface are in communication with each other. The hydraulic hoses are connected to the second ports and extend in a direction away from the peripheral surface.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: September 17, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Suguru Shiiguchi, Kengo Miyazaki
  • Publication number: 20240287761
    Abstract: A working machine is a working machine provided with a plurality of hydraulic actuators, the working machine including a machine body, an operator's seat on the machine body, a console extending upward from the machine body in front of the operator's seat, a manual operator to operate the plurality of hydraulic actuators, and a pattern switch to switch an operation pattern in which the manual operator is used to operate the plurality of hydraulic actuators between a plurality of operation patterns. The console includes therein a switch placement portion for placement of the pattern switch.
    Type: Application
    Filed: May 8, 2024
    Publication date: August 29, 2024
    Applicant: KUBOTA CORPORATION
    Inventor: Suguru SHIIGUCHI
  • Publication number: 20230287652
    Abstract: A working machine includes: a machine body; an operator's seat; an operation device to pivot on a pivot shaft that extends in a width direction; and a working device to be operated using the operation device. The operation device includes an operation lever and a control valve to be operated using the operation lever and connected to hydraulic hoses. The control valve includes a valve member to be actuated by operating the operation lever, and a block containing fluid passages through which fluid selectively flows upon actuation of the valve member. The fluid passages bend such that first ports in an upper surface of the block facing the valve member and second ports in a peripheral surface extending from a periphery of the upper surface are in communication with each other. The hydraulic hoses are connected to the second ports and extend in a direction away from the peripheral surface.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 14, 2023
    Applicant: KUBOTA CORPORATION
    Inventors: Suguru SHIIGUCHI, Kengo MIYAZAKI
  • Patent number: D918275
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: May 4, 2021
    Assignee: Kubota Corporation
    Inventors: Ryo Masuda, Suguru Shiiguchi
  • Patent number: D969174
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: November 8, 2022
    Assignee: Kubota Corporation
    Inventors: Ryo Masuda, Yutaka Araki, Suguru Shiiguchi