Patents by Inventor Tsuyoshi Nozawa

Tsuyoshi Nozawa 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).

  • Cylinder liner and cylinder block
    Patent number: 7273029
    Abstract: A cast iron cylinder liner of the present invention includes a plurality of grooves formed on an outer surface of the cylinder liner. Each of the grooves extends in a circumferential direction of the cylinder liner in a ring or spiral shape, and the grooves divide the outer surface of the cylinder liner into a plurality of ring or spiral sections. The outer surfaces of the ring sections have a uniform distance from the central axis of the cylinder liner over the entire area of the outer surfaces, and the grooves being arranged symmetrically with respect to the center of the cylinder liner in an axial direction thereof. Each of the grooves has a J-shaped longitudinal cross-section including a first inclination part and a groove bottom part. The first inclination part extends from the outer surface of one of the ring sections or of one turn of the spiral sections toward the center of the cylinder liner in an axial direction thereof.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: September 25, 2007
    Assignees: Fuji Jukogyo Kabushiki Kaisha, Kabushiki Kaisha Koyama
    Inventors: Teruyuki Oda, Tsuyoshi Nozawa, Kazuo Koyama
  • Cylinder liner and cylinder block
    Publication number: 20060156917
    Abstract: A cast iron cylinder liner of the present invention includes a plurality of grooves formed on an outer surface of the cylinder liner. Each of the grooves extends in a circumferential direction of the cylinder liner in a ring or spiral shape, and the grooves divide the outer surface of the cylinder liner into a plurality of ring or spiral sections. The outer surfaces of the ring sections have a uniform distance from the central axis of the cylinder liner over the entire area of the outer surfaces, and the grooves being arranged symmetrically with respect to the center of the cylinder liner in an axial direction thereof. Each of the grooves has a J-shaped longitudinal cross-section including a first inclination part and a groove bottom part. The first inclination part extends from the outer surface of one of the ring sections or of one turn of the spiral sections toward the center of the cylinder liner in an axial direction thereof.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 20, 2006
    Inventors: Teruyuki Oda, Tsuyoshi Nozawa, Kazuo Koyama