Patents by Inventor Jean-Christophe Charbonnel

Jean-Christophe Charbonnel 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).

  • Bourdon-tube pressure gauge
    Patent number: 6044712
    Abstract: A pressure gauge comprising a body (14) and a pressure sensing member consisting of a resiliently flexible curved tube (12) attached to the body (14) and having a fixed end (16) for communication with a fluid to enable pressure measurement, and a closed opposite end (18) freely movable by the fluid pressure relative to the body (14) and controlling a pressure indicator (20). The gauge comprises at least one stop (36) arranged between the body (14) and the tube (12) for restricting the resiliency of the tube (12).
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: April 4, 2000
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes George Claude
    Inventors: Gilles Cannet, Stephane Thouvier, Jean-Christophe Charbonnel
  • Oxygen cutting torch with a liquid oxygen jet
    Patent number: 5497943
    Abstract: A torch includes a sheath enclosing various feed streams for active cutting fluids and cooling fluid, terminated by a distribution unit in which a cutting head is removably mounted. The cutting head includes a heating unit provided with channels for ejection of a combustible oxygen mixture, an intermediate insert forming the ejection nozzle for gaseous shielding oxygen, and a central insert for ejection of liquid oxygen under pressure.
    Type: Grant
    Filed: January 15, 1994
    Date of Patent: March 12, 1996
    Assignee: L'Air Liquide Societe Anoneyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean-Christophe Charbonnel, Richard Soula, Serge Suzon