Patents by Inventor Geum T. Han

Geum T. Han 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).

  • Piston assembly for an internal combustion engine
    Patent number: 6615788
    Abstract: A mechanism for sealing gaps between a piston assembly and a cylinder for an internal combustion engine is provided. A sealing member inserted into an upper wall of a groove holding the oil ring to block a gap between them. The oil ring has two rails on its outer periphery. The upper rail is radially bigger than the lower rail and conforms better to the shape of the cylinder. The oil ring has a recess on its inner periphery to hold a pressing member that forces the oil ring against the cylinder. The recess is extended beyond the pressing member to provide a larger contact area between the oil ring and the groove.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: September 9, 2003
    Inventor: Geum T. Han
  • Piston assembly for an internal combustion engine
    Publication number: 20030101958
    Abstract: A mechanism for sealing gaps between a piston assembly and a cylinder for an internal combustion engine is provided. A sealing member inserted into an upper wall of a groove holding the oil ring to block a gap between them. The oil ring has two rails on its outer periphery. The upper rail is radially bigger than the lower rail and conforms better to the shape of the cylinder. The oil ring has a recess on its inner periphery to hold a pressing member that forces the oil ring against the cylinder. The recess is extended beyond the pressing member to provide a larger contact area between the oil ring and the groove.
    Type: Application
    Filed: March 4, 2002
    Publication date: June 5, 2003
    Inventor: Geum T. Han