Patents by Inventor Michel Delzenne

Michel Delzenne 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).

  • Process for striking an arc in electric welding and welding torch employing said process
    Patent number: 4855566
    Abstract: The invention relates to a process for striking an arc and to a torch employing said process. An electronic ignitor located at a maximum distance of 8 meters from the torch has a high-voltage conductor which leads to a spark gap adjacent the part to be welded. The high-voltage circuit is closed in the region of the zone to be ionized between the welding electrode and the part.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: August 8, 1989
    Assignee: L'Air Liquide
    Inventors: Jean-Francois Hays, Pierre Legrand, Eric Verna, Michel Delzenne, Bernard Reynaud, Pierre Gaillard