Patents by Inventor Luca De Rai

Luca De Rai 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).

  • Multipolar cable for transmitting energy and/or signals, method and apparatus for the production thereof
    Patent number: 7642462
    Abstract: A multipolar cable for transmitting energy and/or signals, as well as an extrusion method and apparatus for the production thereof, is described. The multipolar cable has at least three transmissive elements and a sheath in which at least three longitudinal housings being intended to house respectively the at least three transmissive elements according to a predetermined configuration and being formed within respective substantially lobe-shaped longitudinal portions of the sheath. The multipolar cable allows the connection of the transmissive elements to one or more consumption points by means of at least one connector provided with at least three perforating elements.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: January 5, 2010
    Assignee: Prysmian Cavi e Sistemi Energia
    Inventors: Paolo Veggetti, Sergio Belli, Luca Balconi, Luca De Rai, Angelo Riella, Vincenzo Crisci
  • Multipolar Cable for Transmitting Energy and/or Signals, Method and Apparatus for the Production Thereof
    Publication number: 20070251716
    Abstract: A multipolar cable for transmitting energy and/or signals, as well as an extrusion method and apparatus for the production thereof, is described. The multipolar cable has at least three transmissive elements and a sheath in which at least three longitudinal housings being intended to house respectively the at least three transmissive elements according to a predetermined configuration and being formed within respective substantially lobe-shaped longitudinal portions of the sheath. The multipolar cable allows the connection of the transmissive elements to one or more consumption points by means of at least one connector provided with at least three perforating elements.
    Type: Application
    Filed: December 30, 2003
    Publication date: November 1, 2007
    Inventors: Paolo Veggetti, Sergio Belli, Luca Balconi, Luca De Rai, Angelo Riella, Vincenzo Crisci
  • Process to make miniaturized multipolar flame-propagation-resistant cables having a reduced emission of toxic and noxious gases and cables obtained thereby
    Patent number: 6162542
    Abstract: The process of the invention to make miniaturized multipolar cables includes the steps of combining together a plurality of individually insulated conductors, inserting a filling in a pasty state and containing mineral fillers into the gaps existing between the conductors, partly hardening the filling and disposing the other cable components, in particular the sheath, around the conductors-filling assembly, and letting the filling become completely hard within the produced cable.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: December 19, 2000
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Luca Castellani, Luca De Rai, Pasquale Volpe
  • Process to make miniaturized multipolar flame-propagation-resistant cables having a reduced emission of toxic and noxious gases and cables obtained thereby
    Patent number: 5972138
    Abstract: The process of the invention to make miniaturized multipolar cables includes the steps of combining together a plurality of individually insulated conductors, inserting a filling in a pasty state and containing mineral fillers into the gaps existing between the conductors, partly hardening the filling and disposing the other cable components, in particular the sheath, around the conductors-filling assembly, and letting the filling become completely hard within the produced cable.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: October 26, 1999
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Luca Castellani, Luca De Rai, Pasquale Volpe