Patents Assigned to Art Metal Manufacturing Co. Ltd.
  • Piston with local inorganic fiber reinforcement and method of making the same
    Patent number: 4548126
    Abstract: An engine piston is formed with a top crown surface and a top ring groove. An upper annular land surface is defined between the top ring groove and the edge of the top crown surface. The upper annular land surface and the side walls of the top ring groove are defined by a part of the piston which is formed of a matrix metal reinforced with inorganic fibers. The proportion of the inorganic fibers by volume in the reinforced part of the piston may optionally be approximately between 2% and 10%.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: October 22, 1985
    Assignees: Toyota Jidosha Kabushiki Kaisha, Art Metal Manufacturing Co. Ltd.
    Inventors: Tadashi Donomoto, Mototsugu Koyama, Yoshio Fuwa, Nobuhiro Miura, Tatsuo Sakakibara