Patents Assigned to Ludwig Riedhammer GmbH & Co. K.G.
  • Tunnel furnace
    Patent number: 4123044
    Abstract: A tunnel furnace comprises an elongate hollow structure inclined to have one end higher than the other and is reciprocable about an axis parallel to its length, heaters for heating material to be treated being incorporated in the structure.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: October 31, 1978
    Assignee: Ludwig Riedhammer GmbH & Co. K.G.
    Inventor: Fritz Petzi
  • Sintering furnace
    Patent number: 4106893
    Abstract: A sintering furnace for sintering magnetic-ceramic articles is in the form of a quick-firing carriage furnace having a cooling system for indirect cooling in a cooling zone, having a sluice chamber at its outlet-end and being gastight at its base.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: August 15, 1978
    Assignee: Ludwig Riedhammer GmbH & Co. K.G.
    Inventors: Helmut Baumann, Fritz Petzi