Patents by Inventor Sunkee Yi

Sunkee Yi 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).

  • Exhaust manifold for internal combustion engine
    Patent number: 8459016
    Abstract: An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: June 11, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masaaki Ashida, Sunkee Yi, Takao Inoue, Shunichi Mitsuishi
  • EXHAUST MANIFOLD FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20100115933
    Abstract: An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 13, 2010
    Inventors: Masaaki ASHIDA, Sunkee YI, Takao INOUE, Shunichi MITSUISHI
  • Exhaust manifold for internal combustion engine
    Patent number: 7669412
    Abstract: An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: March 2, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masaaki Ashida, Sunkee Yi, Takao Inoue, Shunichi Mitsuishi
  • Exhaust manifold for internal combustion engine
    Publication number: 20050115231
    Abstract: An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 2, 2005
    Inventors: Masaaki Ashida, Sunkee Yi, Takao Inoue, Shunichi Mitsuishi