Patents by Inventor Yasuo Hirakawa

Yasuo Hirakawa 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).

  • Temperature adjustment mechanism for injection molding machine
    Patent number: 7841854
    Abstract: A temperature adjustment mechanism for use in an injection molding machine that shortens a molding cycle time while preventing the occurrence of a stranding phenomenon in an optimum manner. A passage includes an opening arranged near an outer surface of an outlet of an injection nozzle for an injection molding machine. A supply control unit supplies the passage with at least one of cooling air and heating air to selectively eject the cooling medium, the heating medium, and a mixture of the cooling medium and the heating medium near the outer surface of the outlet.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 30, 2010
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Masaya Ota, Haruo Yokohama, Yasuji Tanaka, Yasuo Hirakawa, Shinichiro Sekido
  • TEMPERATURE ADJUSTMENT MECHANISM FOR INJECTION MOLDING MACHINE
    Publication number: 20090246304
    Abstract: A temperature adjustment mechanism for use in an injection molding machine that shortens a molding cycle time while preventing the occurrence of a stranding phenomenon in an optimum manner. A passage includes an opening arranged near an outer surface of an outlet of an injection nozzle for an injection molding machine. A supply control unit supplies the passage with at least one of cooling air and heating air to selectively eject the cooling medium, the heating medium, and a mixture of the cooling medium and the heating medium near the outer surface of the outlet.
    Type: Application
    Filed: November 20, 2006
    Publication date: October 1, 2009
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Masaya Ota, Haruo Yokohama, Yasuji Tanaka, Yasuo Hirakawa, Shinichiro Sekido
  • Slip casting device
    Patent number: 5120211
    Abstract: A slip casting device has a molding station for molding a casting with a mold, and a releasing station separate from the molding station, for separating the casting from mold members of the mold which carry the casting. The device may include a pair of vertically spaced molds and a common clamping cylinder interposed between the pair of molds.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: June 9, 1992
    Assignee: Toto Ltd.
    Inventors: Haruyuki Ito, Masanobu Hisaeda, Toshiaki Sasaki, Yasuo Hirakawa, Mitsuru Ida