Patents by Inventor Jean-Francois Lecouffe

Jean-Francois Lecouffe 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).

  • Patent number: 7227099
    Abstract: Methods of controlling an arc welding shop. In the shop, several welding torches are used and each torch is supplied with consumable wire. The wire moves at a wire speed and is subjected to an electrical current. For each torch, either an average wire speed or an average electrical current, as measured over a fixed time period, is determined by a sensor. These values then allow productivity parameters to be selected for the torches. Productivity parameters include the duty factor, the deposition rate, the average duty factor, and the average deposition rate.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: June 5, 2007
    Assignee: L'Air Liquide Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et, l'Exploitation des Procedes Georges, Claude
    Inventors: Roger Blot, Serban Cantacuzene, Eric Cazottes, Stephane Cosson, Jean-François Lecouffe, Viwek Vaidya
  • Publication number: 20050072769
    Abstract: Method of managing or controlling an electric arc welding shop in which several welding torches (10) are employed each fed with at least one consumable wire (11), each consumable wire (11) moving with a wire speed (V) and being subjected to an electrical current of intensity (I), in which, for each torch (10), at least one wire speed value (V) representative of the average speed at which each wire (11) feeds each torch (10) over a given period (T) is determined by means of a speed sensor or at least one intensity value (I) of the current representative of the average current to which each wire (11) is subjected over the given period (T) is determined by means of a current sensor, and at least one productivity parameter chosen from the duty factor (DF) and the deposition rate (DR) for each torch (10) of the shop and/or optionally the average value of these parameters, for all the torches of the shop, is determined from at least each speed valve (V) of the wire (11) or each intensity value (I) of the electrical
    Type: Application
    Filed: July 30, 2003
    Publication date: April 7, 2005
    Inventors: Roger Blot, Serban Cantacuzene, Eric Cazottes, Stephane Cosson, Jean-Francois Lecouffe, Viwek Vaidya