Patents by Inventor Jean L. Bruneel

Jean L. Bruneel 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).

  • Electret bistable system
    Patent number: 4205242
    Abstract: The invention relates to electret bistable systems comprising two fixed electrodes forming a capacitor. A sheet of electret material is inserted for creating holding forces in two rest positions of a moving element located in the capacitor gap. In accordance with the invention, the electret sheet is separated from the corresponding fixed electrode by a layer of dielectric which can be an air gap. As a variant, the charge density of the electret sheet may be concentrated in islands for reducing the holding forces.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: May 27, 1980
    Assignee: Thomson-CSF
    Inventors: Francois Micheron, Jean L. Bruneel, Pierre Leclerc