Patents by Inventor Francis Remy

Francis Remy 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).

  • Plasma or TIG welding or cutting process with a non-oxidizing gas having a low H.sub.2 O and/or O.sub.2 impurity content
    Patent number: 6069336
    Abstract: The invention relates, on the one hand, to an electric-arc work process, such as a plasma cutting or TIG welding process, in which a torch is supplied with at least one non-oxidizing gas, the said torch being provided with at least one electrode made of pure or alloyed metal, such as a tungsten electrode, characterized in that the said non-oxidizing gas contains a concentration of impurities of the oxygen type [O.sub.2 ] of less than 80 ppmv and a concentration of impurities of the water vapor type [H.sub.2 O] of less than 400 ppmv and, on the other hand, to such a welding gas.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: May 30, 2000
    Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Andre Borne, Francis Remy
  • Heat-treatment device and process
    Patent number: 5989647
    Abstract: Heat-treatment device which includes a cooling unit comprising delivery nozzles which deliver at least one coolant, characterized in that it furthermore comprises a shielding element designed so as to maintain a gaseous shielding atmosphere around at least part of the delivery nozzles.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: November 23, 1999
    Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Francis Remy, Bernard Hansz, Vincent Gourlaouen, Christian Coddet, Fran.cedilla.ois Pesme, Han Lin Liao
  • Plasma torches
    Patent number: 4625094
    Abstract: This invention relates to plasma torches in which, the gas entering the electrode holder is divided into a plasmagenic gas flow and into a cooling gas flow by two series of openings drilled in one and the same metal element forming the electrode holder.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: November 25, 1986
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Gerard Marhic, Didier Schaff, Francis Remy
  • Very low power plasma arc cutting equipment
    Patent number: 4598191
    Abstract: The arc is struck by the initial short circuit between the electrode (2), the nozzle (3) and the work piece (7) by the excitation by a very low voltage source (31) of a relay (48) causing (between 43 and 42) the closure of the main contact (15), after which the relay (48) is maintained in its state by the welding or cutting current generating a voltage at the terminals of the inductance (23). Application in the control of a torch which is ignited by a short circuit between the electrode, nozzle and the torch.
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: July 1, 1986
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation Procedes Georges Claude
    Inventors: Gerard Marhic, Francis Remy
  • Arc working torches
    Patent number: 4555609
    Abstract: This invention relates to arc working torches.To prevent the operator from touching the live electrode, the free end of the torch is provided with a cowling formed by a protective skirt on the one hand and on the other hand by a tilting stirrup hinged on this skirt which engages on the torch body while closing an electrical circuit forming part of the safety circuit of the torch. The invention is applied to manual plasma cutting torches.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: November 26, 1985
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Gerard Marhic, Didier Schaff, Francis Remy