Patents by Inventor Dong Keun Go

Dong Keun Go 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).

  • Publication number: 20230339015
    Abstract: Proposed are an apparatus for molding a material, and a method for molding a material by using the apparatus. The apparatus includes first and second fixed platens (110 and 120) provided as a pair and spaced a predetermined distance from each other by tie bars (150), a movable platen (140) movable along the tie bars (150) between the first and second fixed platens (110 and 120), a mold (200) which is provided with a movable mold (220) and a fixed mold (240) and which forms a molding space (260) that is capable of being open or closed as the movable mold (220) moves in a direction toward or away from the fixed mold (240), and a pressing block (300) selectively positioned between the first fixed platen (110) and the movable mold (220) such that the pressing block is capable of applying a pressure to the movable mold (220).
    Type: Application
    Filed: October 28, 2020
    Publication date: October 26, 2023
    Inventors: Dong Keun GO, Myoung Su GO
  • Patent number: 10086427
    Abstract: An apparatus and method for melting and forming metal in a vacuum environment. Metal is melted within a metal-forming apparatus and the molten metal is filled into a mold cavity. A high-level vacuum environment is created in the apparatus by drawing air from the apparatus which is sealed from atmospheric air. This makes it possible to reduce contact with air, which can improve the quality of the metal product.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: October 2, 2018
    Inventors: Dong Keun Go, Myoung Su Go
  • Patent number: 9821370
    Abstract: A mold device for forming metal in a high-level vacuum environment. The mold device comprises a fixed mold, a movable mold adjoining the upper portion of the fixed mold to form a mold cavity, a closing plate placed closely on top of the movable mold, and an ejector pin extending through the closing plate and the movable mold into the mold cavity. Packing is disposed in a hole in the closing plate through which the ejector pin extends, thereby preventing atmospheric air from entering the mold cavity. There is a blocking space between the movable mold and the packing to prevent heat from being transferred to the packing. An exhaust unit creates a vacuum environment by drawing air from the mold cavity. The metal product is pushed out by the ejector pin.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: November 21, 2017
    Inventors: Dong Keun Go, Myoung Su Go
  • Publication number: 20170113268
    Abstract: An apparatus and method for melting and forming metal in a vacuum environment. Metal is melted within a metal-forming apparatus and filling the molten metal is filled into a mold cavity. A high-level vacuum environment is created in the apparatus by drawing air from the apparatus which is sealed from atmospheric air. This makes it possible to reduce contact with air, which can improve the quality of the metal product.
    Type: Application
    Filed: June 5, 2015
    Publication date: April 27, 2017
    Inventors: Dong Keun GO, Myoung Su GO
  • Publication number: 20170106439
    Abstract: A mold device for forming metal in a high-level vacuum environment. The mold device comprises a fixed mold, a movable mold adjoining the upper portion of the fixed mold to form a mold cavity, a closing plate placed closely on top of the movable mold, and an ejector pin extending through the closing plate and the movable mold into the mold cavity. Packing is disposed in a hole in the closing plate through which the ejector pin extends, thereby preventing atmospheric air from entering the mold cavity. There is a blocking space between the movable mold and the packing to prevent heat from being transferred to the packing. An exhaust unit creates a vacuum environment by drawing air from the mold cavity. The metal product is pushed out by the ejector pin.
    Type: Application
    Filed: June 5, 2015
    Publication date: April 20, 2017
    Inventors: Dong Keun GO, Myoung Su GO
  • Patent number: 7377303
    Abstract: The present invention relates to a die casting machine. A molten metal (melted liquid) is supplied into a evacuated casting space that is formed by a combination of a movable mold and a fixed mold. The molten metal is first moved in a horizontal direction along a molten metal injection pipe and is then injected into a chamber located at the bottom of the casting space. Thereafter, the molten metal is moved in a vertical direction by means of a follower plunger and is then inserted into the casting space. Therefore, since occurrence of a turbulent flow of the molten metal injected into a mold is prevented, a product of a high quality with no minute bubbles can be obtained.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: May 27, 2008
    Inventor: Dong Keun Go