Patents by Inventor Kunihiko HATAZAWA

Kunihiko HATAZAWA 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).

  • Compression molding device
    Patent number: 11981053
    Abstract: A compression molding device, which can obtain a high compression molding force without lowering the efficiency of article production, and whose molding means has a long service life, is provided. In the compression molding device, a one-side mold assembly moving means (58) includes a toggle link mechanism including two links (62) and (64), and a toggle link mechanism operating means (60), while an opposite-side mold assembly moving means (108) includes a hydraulic cylinder mechanism. When a one-side mold assembly (16) and an opposite-side mold assembly (18) are to be brought from an open state into a closed state, the one-side mold assembly (16) is first moved to a nearly closed state by the one-side mold assembly moving means (58), and then the opposite-side mold assembly (18) is moved from the nearly closed state to the closed state by the opposite-side mold assembly moving means (108).
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: May 14, 2024
    Assignees: NIPPON CLOSURES CO., LTD., TOYO SEIKAN GROUP ENGINEERING CO., LTD.
    Inventors: Akio Sato, Yoshihiro Kaitsuka, Shin Nakamura, Keitaro Hayashi, Hiroshi Takahashi, Mitsuo Kumata, Yukihito Nozaki, Tomoho Kikuchi, Kunihiko Hatazawa
  • COMPRESSION MOLDING DEVICE
    Publication number: 20220063141
    Abstract: A compression molding device, which can obtain a high compression molding force without lowering the efficiency of article production, and whose molding means has a long service life, is provided. In the compression molding device, a one-side mold assembly moving means (58) includes a toggle link mechanism including two links (62) and (64), and a toggle link mechanism operating means (60), while an opposite-side mold assembly moving means (108) includes a hydraulic cylinder mechanism. When a one-side mold assembly (16) and an opposite-side mold assembly (18) are to be brought from an open state into a closed state, the one-side mold assembly (16) is first moved to a nearly closed state by the one-side mold assembly moving means (58), and then the opposite-side mold assembly (18) is moved from the nearly closed state to the closed state by the opposite-side mold assembly moving means (108).
    Type: Application
    Filed: December 9, 2019
    Publication date: March 3, 2022
    Inventors: Akio SATO, Yoshihiro KAITSUKA, Shin NAKAMURA, Keitaro HAYASHI, Hiroshi TAKAHASHI, Mitsuo KUMATA, Yukihito NOZAKI, Tomoho KIKUCHI, Kunihiko HATAZAWA