Patents by Inventor Toshiharu FUJIOKA

Toshiharu FUJIOKA 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).

  • Injection device and molding machine
    Patent number: 12186955
    Abstract: A run-around circuit makes a hydraulic fluid discharged from a rod-side chamber along with a forward movement of a piston in an injection cylinder flow into a head-side chamber. A servo valve is provided in the run-around circuit and is connected to a tank. In a first state, the servo valve permits flow from the rod-side chamber to the head-side chamber, while prohibits flow from the rod-side chamber to the tank. In a second state, the servo valve prohibits flow from the rod-side chamber to the head-side chamber, while permits flow from the rod-side chamber to the tank. The servo valve can control the flow rate of the hydraulic fluid discharged from the rod-side chamber in each of the first state and second state.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 7, 2025
    Assignee: Shibaura Machine Co., Ltd.
    Inventors: Toshiharu Fujioka, Kazuma Hayase, Hiroshi Yokoyama, Makoto Tsuji, Saburo Noda
  • INJECTION DEVICE AND MOLDING MACHINE
    Publication number: 20220168937
    Abstract: A run-around circuit makes a hydraulic fluid discharged from a rod-side chamber along with a forward movement of a piston in an injection cylinder flow into a head-side chamber. A servo valve is provided in the run-around circuit and is connected to a tank. In a first state, the servo valve permits flow from the rod-side chamber to the head-side chamber, while prohibits flow from the rod-side chamber to the tank. In a second state, the servo valve prohibits flow from the rod-side chamber to the head-side chamber, while permits flow from the rod-side chamber to the tank. The servo valve can control the flow rate of the hydraulic fluid discharged from the rod-side chamber in each of the first state and second state.
    Type: Application
    Filed: December 27, 2019
    Publication date: June 2, 2022
    Applicant: Shibaura Machine Co., Ltd.
    Inventors: Toshiharu FUJIOKA, Kazuma HAYASE, Hiroshi YOKOYAMA, Makoto TSUJI, Saburo NODA
  • Clamping device and molding apparatus
    Patent number: 10086428
    Abstract: The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which gives to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: October 2, 2018
    Assignee: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Toshiharu Fujioka, Kohei Watarai, Saburo Noda
  • CLAMPING DEVICE AND MOLDING APPARATUS
    Publication number: 20160184887
    Abstract: The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which give to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.
    Type: Application
    Filed: December 23, 2015
    Publication date: June 30, 2016
    Inventors: Toshiharu FUJIOKA, Kohei WATARAI, Saburo NODA