Patents by Inventor Rouelle Raholijaona

Rouelle Raholijaona 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).

  • Device for measuring electric current, including a sensor sensitive to magnetic flux and intended in particular for electrically propelled vehicles
    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
  • Method of manufacturing a coil on a toroidal magnetic circuit
    Patent number: 5583475
    Abstract: The method comprises producting a linear coil (4) by winding around a cylindrical mandrel (5) a conductor wire coated with a thermo-adhesive varnish, opening the toroidal magnetic circuit (1), withdrawing the linear coil (4) from the cylindrical mandrel (5), heating the linear coil (4) so as to render it flexible, slapping the linear coil over the open toroidal magnetic circuit (1), reclosing the toroidal magnetic circuit, and allowing the assembly to cool.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: December 10, 1996
    Assignee: Mecagis
    Inventors: Rouelle Raholijaona, Luc Colombel, Roger Deon