Patents by Inventor Marcel Louarn

Marcel Louarn 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 starting a gas turbine in an aircraft
    Patent number: 6351090
    Abstract: A device for starting a gas turbine in an aircraft includes an electrical power supply delivering a direct current and a drive electric motor connected to the power supply, independent of the turbine to be started and having an output shaft mechanically coupled to an input shaft of the turbine to rotate with it. The drive electric motor is a three-phase alternating current synchronous motor and is controlled by an inverter connected to the power supply. Applications include situations in which the turbine to be driven is a high-power turbine.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: February 26, 2002
    Assignee: Aerospatiale Societe Nationale Industrielle and Kollmorgen Artus
    Inventors: Serge Boyer, Régine Sutra-Orus, Stéphane Tregine-Regent, Alain Tardy, Claude Barbier, Philippe Buron, Patrick Ribardiere, Marcel Louarn
  • Pneumatic device to control the speed of an electric motor
    Patent number: 4316130
    Abstract: Device to control the speed of an electric motor from a pneumatic pedal, characterized in that it includes an element deformable with the pressure controlled by the pneumatic pedal, an element of magnetic material forming a mechanical unit with the element deformable with the pressure and capable of modifying the inductance of a coil incorporated into an electronic control circuit for the current of the electric motor the speed of which is to be controlled.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: February 16, 1982
    Assignee: Kollmorgen Technologies Corporation
    Inventor: Marcel Louarn