Patents Assigned to Kabushiki Kaisha Nakashima
  • Glass spraying method
    Patent number: 6474103
    Abstract: The method comprises a preheating step to heat a metal base 10 entirely, a pre-spraying step to for a glass pre-coating 13 by pre-spraying a glass material onto the surface of the preheated base, a main-spraying step to form a glass coating 14 by additionally heating the glass pre-coating formed in the previous step and main-spraying a like glass material onto the surface.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: November 5, 2002
    Assignee: Kabushiki Kaisha Nakashima
    Inventor: Mikio Nakashima
  • Glass spraying method and apparatus
    Patent number: 6193800
    Abstract: The method comprises a preheating step to heat a metal base 10 entirely, a pre-spraying step to for a glass pre-coating 13 by pre-spraying a glass material onto the surface of the preheated base, a main-spraying step to form a glass coating 14 by additionally heating the glass pre-coating formed in the previous step and main-spraying a like glass material onto the surface.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: February 27, 2001
    Assignee: Kabushiki Kaisha Nakashima
    Inventor: Mikio Nakashima
  • Roll member having glass surface and method for manufacturing same
    Patent number: 5237747
    Abstract: A roll member of metal body is coated with a smooth glass layer sprayed thereon. The invention is also directed to a method for manufacturing a roll member of metal body having a glass surface, including preheating the surface of the metal body which is subject to a blast treatment to 200.degree..about.600.degree. C. with or without a stainless undercoat layer on the blast-treatment surface, spraying a glass material onto the surface of the metal body, and grinding the sprayed glass surface to form a smooth surface.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: August 24, 1993
    Assignee: Kabushiki Kaisha Nakashima
    Inventor: Mikio Nakashima