Patents Assigned to Protective Technologies, Inc.
  • Nozzle guard for blast furnace mudgun
    Patent number: 5346186
    Abstract: A nozzle guard device (50, 50') has a generally C-shaped half-shell configuration for shielding a lower and otherwise exposed portion of a blast furnace mudgun nozzle (22) from damaging contact with molten metal and slag during taphole closure operations. Mounting elements (86, 86') are provided for extension into an opening (26) of the nozzle (22) for embedding a refractory clay material contained within the opening (26) for securing the nozzle guard device (50, 50') in position on the nozzle (22).
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: September 13, 1994
    Assignee: Protective Technologies, Inc.
    Inventor: William F. Given