Patents by Inventor Dominique Broussoux

Dominique Broussoux 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).

  • Reinforced piezoelectric transducer and pressure sensor using such a transducer
    Patent number: 4649312
    Abstract: A piezoelectric transducer including a polarized piezoelectric material film, which also has a reinforcing material incorporated into the mass and which prevents any deformation of the film in certain given directions.The invention also relates to a pressure sensor using such a transducer.This sensor can be used both as a pressure sensor and as a pressure gradient measuring device.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: March 10, 1987
    Assignee: Thomson-CSF
    Inventors: Philippe Robin, Francois Micheron, Patrick Petit, Dominique Broussoux
  • Process for manufacturing a piezo- or pyroelectric polymer material comprising a cross-linking step
    Patent number: 4521322
    Abstract: The invention relates to piezoelectric or pyroelectric polymer materials. It provides a process for manufacturing these materials comprising pressing polymer pellets while heating, dipping the obtained sheets in water, stretching the sheets, electrically polarizing the sheets by applying between the two faces of the sheets an electric orientation field, irradiating the sheets to obtain crosslinking and reheating the sheets.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: June 4, 1985
    Assignee: Thomson-CSF
    Inventors: Dominique Broussoux, Hugues Facoetti, Francois Micheron, Lucien Monnerie
  • Method of fabrication of piezoelectric polymer transducers by forging
    Patent number: 4508668
    Abstract: In a method of fabrication of piezoelectric polymer transducers by forging, a preform is subjected to flattening by compression in order to produce a radial orientation of the molecular chains constituting the polymer with respect to the center of pressure.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: April 2, 1985
    Assignee: Thomson-CSF
    Inventors: Dominique Broussoux, Hugues Facoetti, Francois Micheron
  • Process for the production of a block of piezoelectric macromolecular material
    Patent number: 4500377
    Abstract: The invention relates to the production of blocks of macromolecular material displaying piezoelectric and pyroelectric properties and provides a production process consisting in drawing a thin strip of a film of macromolecular material from a feed reel, electrically polarizing the said film and coating it with adhesive by means of a solution based on a polymeric binder before the forming on a mandrel of a roll of which the turns form, after drying, a monolithic structure which may be split into blocks.The invention finds particular use in the production of electromechanical transducers for applications connected with electroacoustics and underwater acoustics.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: February 19, 1985
    Assignee: Thomson-CSF
    Inventors: Dominique Broussoux, Hugues Facoetti, Pierre Ravinet, Daniel Bernard, Francois Micheron
  • Process for producing piezoelectric polymer films
    Patent number: 4427609
    Abstract: The invention relates to piezoelectric polymer films.The invention relates to a production process consisting of stretching a polymer material blank by rolling under an electrical field between two oppositely rotating rollers.The invention is more particularly applicable to the production of electromechanical transducers, whose active elements are constituted by piezoelectric polymer films provided with electrodes.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: January 24, 1984
    Assignee: Thomson-CSF
    Inventors: Dominique Broussoux, Hugues Facoetti, Francois Micheron