Patents by Inventor Riccardo Fragiacomo

Riccardo Fragiacomo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Controlled current feed device for electric arc furnace
    Patent number: 6157666
    Abstract: Controlled current feed device for electric arc furnace employed to melt metals, wherein the feed line comprises at least a medium tension bar (13), a feed control device and a transformer (17) serving the furnace, the feed control device (16) being arranged between the medium tension bar (13) and the transformer of the furnace (17) and comprising a mutual inductor (19) consisting of a primary coil (19a) and a secondary (19b) coil, the primary coil (19a) being arranged in serial connection on the feed line (10) and the secondary coil (19b) being connected to at least a re-phasing filter (20) comprising at least a condenser (22).
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: December 5, 2000
    Assignee: Centro Automation SpA
    Inventors: Ferruccio Della Vedova, Gianni Gensini, Riccardo Fragiacomo