Patents by Inventor Hiroki Numata

Hiroki Numata 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).

  • Continuous hot-dip plating apparatus
    Patent number: 5072689
    Abstract: A continuous hot-dip plating apparatus has a roll assembly having superior resistance to erosion caused by the hot melt plating metal, as well as high resistance to wear of the shaft and bearings, which are immersed in the hot melt of the plating metal. A ceramic material is mounted on the sliding portions of the metallic roll shaft to make sliding contact with the metallic bearings and/or on the sliding surfaces of the metallic bearings which contact the metallic roll shaft. A clearance is left between the shafts and bearings to hold molten metal thereinbetween for lubrication.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: December 17, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuo Nakagawa, Hitoshi Okoshi, Osamu Shitamura, Hiroki Numata, Mituo Taguchi, Teruo Yamaguchi, Yasunobu Kani, Toshio Kamata, Takahiko Ookouchi, Junji Sakai