Patents by Inventor Claude Duconge

Claude Duconge 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 emitting acoustic waves in a liquid medium
    Patent number: 4203501
    Abstract: This device comprises two movable elements of rigid material tightly interconnected by means of a deformable membrane forming therewith a tight internal enclosure, means for varying abruptly the volume of said enclosure by successively moving the two elements away from each other, maintaining them in spaced relationship and allowing them to be urged toward each other by the effect of the external hydrostatic pressure, in which the means for moving the two elements away from each other includes two cylinders and at least one piston slidable in one of said cylinders, associated to one of said movable elements and also to a push-member slidable in one of the cylinders and bearing on the other movable element and means for feeding said cylinder with pressurized fluid so as to maintain the elements in spaced relationship or to release them.
    Type: Grant
    Filed: May 9, 1978
    Date of Patent: May 20, 1980
    Assignee: Institute Francais du Petrole
    Inventors: Jacques Cholet, Jean Laurent, Pierre Magneville, Claude Duconge
  • Device for emitting acoustic waves in a liquid medium
    Patent number: 4103280
    Abstract: This device comprises two movable elements of rigid material tightly interconnected by means of a deformable membrane forming therewith a tight internal enclosure, means for varying abruptly the volume of said enclosure by successively moving the two elements away from each other, maintaining them in spaced relationship and allowing them to be urged toward each other by the effect of the external hydrostatic pressure, in which the means for moving the two elements away from each other includes two cylinders and at least one piston slidable in one of said cylinders, associated to one of said movable elements and also to a push-member slidable in one of the cylinders and bearing on the other movable element and means for feeding said cylinder with pressurized fluid so as to maintain the elements in spaced relationship or to release them.
    Type: Grant
    Filed: November 20, 1973
    Date of Patent: July 25, 1978
    Assignee: Institut Francais du Petrole des Carburants et Lubrifiants
    Inventors: Jacques Cholet, Jean Laurent, Pierre Magneville, Claude Duconge