Patents by Inventor Michel Bourge

Michel Bourge 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 and apparatus for measuring the instability of an arc in an electrical arc furnace for processing liquid metal
    Patent number: 5050185
    Abstract: According to this process and this device:a signal representing the derivative of the intensity of the current in the arc is sensed,the sensed signal is amplified,the amplified signal is directed simultaneously into two band pass filters (6, 7) respectively having a high frequency broad band (6) and having a narrow band centered on a low fundamental frequency (7),the signals emanating from the filters (6, 7) are transmitted to effective value extractors (8, 9),by means of a divider module (11) an energy signal is formulated, which is proportional to the ratio of the effective value of the signal emanating from the broad band filter (6) and the effective value of the signal emanating from the narrow band filter (7),and the proportional energy signal obtained is displayed on a scale (12), where it is expressed as a percentage, this percentage being indicative of the behaviour of the arc, signifying the formulation phase.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 17, 1991
    Assignee: Institut de Recherches de la Siderurgie Francaise (IRSID)
    Inventors: Michel Bourge, Gilbert Engler, Ghislain Maurer