Patents by Inventor Michel Berna

Michel Berna 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: 5734264
    Abstract: A device is provided for measuring electric current having at least one probe sensitive to magnetic flux arranged in the air gap of an annular core through which at least one conductor of a current to be measured is intended to pass. A compensation winding is wound of the core and a measuring resistor is connected in series with the compensation winding. A circuit is provided for regulating the supply current to the compensation winding regardless of the direction of the current to be measured. The circuit is controlled by the output signal of the sensor which is sensitive to magnetic flux.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: March 31, 1998
    Assignee: MECAGIS
    Inventors: Michel Berna, Luc Colombel, Rouelle Raholijaona
  • Patent number: 4395669
    Abstract: The invention provides an electrical machine having an inductor and an armature at least one of which has at least two independent winding assemblies. The switching into and out of circuit of each winding assembly is controlled by a processor which receives monitoring parameters of the machine and desired value parameters, thereby controlling in real time the operating characteristics of the machine. The machine may be a wind-driven generator.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: July 26, 1983
    Assignee: Association Gradient
    Inventors: Michel Berna, Michel Kant, Jean P. Vilain, Rene Seger