Patents Assigned to Lodge-Cottrell Limited
  • Mast-type electro-precipitator discharge electrodes
    Patent number: 4569685
    Abstract: An electro-precipitator discharge electrode comprises connected upper and lower sections and each section comprises an elongated mast tube, a plurality of principal cross members, and a plurality of twisted discharge wires extending between the cross members and fixed therein by crimping. Upper and lower auxiliary cross members are provided to give longitudinal rigidity to the discharge electrode.
    Type: Grant
    Filed: July 5, 1984
    Date of Patent: February 11, 1986
    Assignee: Lodge-Cottrell Limited
    Inventor: Terence B. F. Cottrell
  • Fume containment
    Patent number: 4216708
    Abstract: A method and apparatus for containing fume emanating from the surface of molten iron or slag flowing along an open stretch of runner in a casthouse comprises directing an air curtain across the open stretch of runner.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: August 12, 1980
    Assignee: Lodge-Cottrell Limited
    Inventors: John G. Wyatt, Kenneth R. Parker
  • Solid state rectifier control unit
    Patent number: 3938059
    Abstract: A circuit for controlling the rectifier circuit in an electrostatic dust precipitator, the circuit being an oscillator circuit utilising a pair of alternately conducting transistors and a timing circuit controlling conduction of one of the transistors, the other transistor controlling the circuit output.
    Type: Grant
    Filed: August 21, 1974
    Date of Patent: February 10, 1976
    Assignee: Lodge-Cottrell Limited
    Inventor: Bernard Canning