Patents Assigned to Sanshin Kogyo Co., Ltd.
  • Patent number: 5130203
    Abstract: A method of producing a metal gasket includes steps of alkaline cleaning a metal plate, coating a non-rinse chemical for chromate conversion of surfaces of the metal plate and drying to form chromate films, coating an adhesive on the chromate films and drying or baking the adhesive to form adhesive layers, and coating a rubber compound of a sheet-like or an amorphous mixed compound to a predetermined thickness on the adhesive layers and heating and vulcanizing the rubber compound to form rubber coated metal plate. A metal gasket manufactured in this manner has a high bonding power of the rubber layers to the metal plate to obtain an improved durability for long use.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: July 14, 1992
    Assignees: Nippon Leakless Industry Co., Ltd., Sanshin Kogyo Co., Ltd.
    Inventors: Tsunehiko Abe, Hiroyuki Nakano, Kazuaki Shiotani, Yoshiharu Takada
  • Patent number: 5110630
    Abstract: A method of producing a metal gasket includes steps of alkaline cleaning a metal plate, coating a non-rinse chemical for chromate conversion of surfaces of the metal plate and drying to form chromate films, coating an adhesive on the chromate films and drying or baking the adhesive to form adhesive layers, and coating rubber compound of a sheet-like or an amorphous mixed compound to a predetermined thickness on the adhesive layers and heating and vulcanizing the rubber compound to form rubber coated metal plate. A metal gasket manufactured in this manner has a high bonding power of the rubber layers to the metal plate to obtain an improved durability for long use.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: May 5, 1992
    Assignees: Nippon Leakless Industry Co., Ltd., Sanshin Kogyo Co., Ltd.
    Inventors: Tunehiko Abe, Hiroyuki Nakano, Kazuaki Shiotani, Yoshiharu Takada