Patents Assigned to Prysmian Telecomunicacoes Cabos E Sistemas Do Brasil S.A.
  • Patent number: 7507909
    Abstract: A cable having twisted metallic conductors for use in digital systems. Twisted metallic conductor cable with high electrical performance for use in digital systems formed by a bundled array of insulated metallic conductors of thermoplastic material sheathed in a protective banding and by a metallic shielding and finally by a protective cover. The cable uses simultaneously a series of pitches having a maximum and minimum value between 10 and 80 mm and a conductor insulation with a thickness from 2.0 to 2.2 times the conductor diameter for a dielectric constant of 1.87. The combination of the special sequence of pitches and an adequate insulation thickness provides a decrease in attenuation and an improvement concerning the problem of cross talk in digital data transmission.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: March 24, 2009
    Assignee: Prysmian Telecomunicacoes Cabos E Sistemas Do Brasil S.A.
    Inventors: Renata Cidade Federighi, João Carlos Vieira Da Silva, Marcelo de Araújo Andrade