Patents Assigned to Asahi Glass Machinery Co., Ltd.
  • Furnace observation apparatus
    Patent number: 6325621
    Abstract: A furnace observation apparatus for observing the state in a high temperature atmosphere furnace, which comprises an optical member to be inserted and disposed in a through-hole formed in a furnace wall of the furnace, made of a material having a softening point higher than the furnace temperature and being capable of transmitting an image observed in the furnace, and a photographing means to be disposed outside of the furnace, for photographing the image observed in the furnace, transmitted from the optical member.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: December 4, 2001
    Assignee: Asahi Glass Machinery Co., Ltd.
    Inventors: Masahiko Murasaki, Sumio Kaieda