Patents Assigned to Ferrox AB
  • Igniter for oxygen lance for thermal cutting, drilling etc.
    Patent number: 7052646
    Abstract: In accordance with the method and the device according to the invention, previous pure pyrotechnic primers for initiating the ignition charges (6a, 6b) of the oxygen lance igniters (13) are replaced by a small quantity of powdered zirconium (7). Zirconium is pyrophoric and therefore ignites, providing it has a sufficiently large surface area, in the presence of a sufficient quantity of pure oxygen, although in ordinary air it is no more flammable than ordinary wood.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: May 30, 2006
    Assignee: Ferrox AB
    Inventors: Borje Ericksson, Lennart Eriksson
  • Cleaning unit for internal mechanical cleaning of containers such as moulds
    Patent number: 3992745
    Abstract: Cleaning the inside of a receptacle such as a chill mould by brushing the inside of the mold is effected by moving one or more brushes up and down within the mold. Each brush is generally disc-shaped and the periphery is shaped in conformity with the shape of the mold. The brushes are so arranged that the bristles thereon can be moved into and out of brushing engagement with the inside of the mold.
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: November 23, 1976
    Assignee: Ferrox AB
    Inventor: Jaakko Johanes Laurila