Patents Assigned to JAPON TRAFFIC TECH CORP.
  • Graphite cast iron nitrided piston ring
    Patent number: 10302197
    Abstract: A graphite cast iron nitrided piston ring has a main body including matrix and a nitrided layer. The matrix is made of graphite cast iron, and the nitrided layer is formed by subjecting a surface of the matrix to contact a cylinder to a gas nitriding process. With the nitrided layer formed at the surface of the matrix made of graphite cast iron, the piston ring has sufficient hardness and good abrasion resistance.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: May 28, 2019
    Assignee: JAPON TRAFFIC TECH CORP.
    Inventors: Wan Tzu Chien, Wei Te Wu, Chen Yu Chien, Chia Chun Li