Patents by Inventor Ludovic FOURNIER

Ludovic FOURNIER 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).

  • Loudspeaker with magnets in ferrofluid
    Patent number: 11450302
    Abstract: A loudspeaker is provided with a motor assembly having at least one planar coil and first and second magnets magnetized in a magnetized direction perpendicular to direction of coil movement and perpendicular to a central axis of radiation of the loudspeaker. Ferrofluid is disposed between a diaphragm and the first and second magnets. Third and fourth magnets are disposed outside the first and second magnets and are magnetized in a direction parallel to the direction of coil movement and perpendicular to the magnetized direction of the first and second speakers.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: September 20, 2022
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Guenther Weber, Gilles Milot, Marc-Olivier Chauveau, Ludovic Fournier, Armin Prommersberger
  • Loudspeaker
    Patent number: 11218811
    Abstract: A loudspeaker and method of operating a loudspeaker are provided. The loudspeaker has a motor assembly with at least one planar coil. First and second magnets are magnetized in a magnetized direction perpendicular to a direction of coil movement and perpendicular to a central axis of radiation of the loudspeaker. The central axis of radiation is generally parallel to a direction of coil movement and parallel to the plane of the planar coil. The first and second magnets each have upper and lower large surface faces separated by a narrowest dimension. The first and second magnets are magnetized across the narrowest dimension in first and second magnetized directions being opposite.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: January 4, 2022
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Gilles Milot, Marc-Olivier Chauveau, Ludovic Fournier, Guenther Weber, Armin Prommersberger
  • LOUDSPEAKER
    Publication number: 20210049992
    Abstract: A loudspeaker is provided with a motor assembly having at least one planar coil and first and second magnets magnetized in a magnetized direction perpendicular to direction of coil movement and perpendicular to a central axis of radiation of the loudspeaker. Ferrofluid is disposed between a diaphragm and the first and second magnets. Third and fourth magnets are disposed outside the first and second magnets and are magnetized in a direction parallel to the direction of coil movement and perpendicular to the magnetized direction of the first and second speakers.
    Type: Application
    Filed: March 7, 2019
    Publication date: February 18, 2021
    Applicant: Harman International Industries, Incorporated
    Inventors: Guenther WEBER, Gilles MILOT, Marc-Olivier CHAUVEAU, Ludovic FOURNIER, Armin PROMMERSBERGER
  • LOUDSPEAKER
    Publication number: 20200045450
    Abstract: A loudspeaker and method of operating a loudspeaker are provided. The loudspeaker has a motor assembly with at least one planar coil. First and second magnets are magnetized in a magnetized direction perpendicular to a direction of coil movement and perpendicular to a central axis of radiation of the loudspeaker. The central axis of radiation is generally parallel to a direction of coil movement and parallel to the plane of the planar coil. The first and second magnets each have upper and lower large surface faces separated by a narrowest dimension. The first and second magnets are magnetized across the narrowest dimension in first and second magnetized directions being opposite.
    Type: Application
    Filed: March 7, 2018
    Publication date: February 6, 2020
    Applicant: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Gilles MILOT, Marc-Olivier CHAUVEAU, Ludovic FOURNIER, Guenther WEBER, Armin PROMMERSBERGER