Patents by Inventor Pascal Bocquillon

Pascal Bocquillon 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).

  • Prestressed annular acoustic transducer
    Patent number: 6065349
    Abstract: The invention relates to annular acoustic transducers formed by a set of piezoelectric segments placed under prestress.It consists in grouping these segments (101) into a set of sectors (102) which are separated by tightening wedges (109). The set is placed in a shaper annulus (108). The keys are drawn towards the center by screws (111), thus thrusting the sectors against the shaper annulus and prestressing the segments. The strain gauges (107) make it possible to check the stress obtained in order to adjust it to the desired value while minimizing the scatter between the sectors.It makes it possible to manufacture dismantleable low-frequency high-power acoustic transducers.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: May 23, 2000
    Assignee: Thomson-CSF
    Inventors: Marc Edouard, Bernard Loubieres, Pascal Bocquillon, Olivier Lacour
  • Air-launched buoy
    Patent number: 5795203
    Abstract: The invention relates to air-launched buoys intended to be launched from a flying aircraft. It consists, in a buoy the body of which is small and has neither flaps nor inflation opening, in making the connection between the balloon which makes the buoy buoyant and the body leaktight and in placing on the lower part of this balloon a beak of triangular shape allowing air to be caught as the buoy falls towards the water. An opening is made in the wall of the balloon below the beak to allow the air thus caught to enter this balloon in order to inflate it. A non-return valve makes it possible to keep the balloon inflated. It makes it possible to improve the inflation of the balloon and limit the speed at which the buoy falls.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: August 18, 1998
    Assignee: Thomson-CSF
    Inventors: Vito Suppa, Pascal Bocquillon, Bernard Loubieres, Gilbert Oddoart
  • Underwater acoustic transmitter for large submersion
    Patent number: 5784341
    Abstract: The invention relates to underwater acoustic transmitters intended to be submerged at large depths. It consists in threading the set of annuli forming the transmitter onto an internal tube (303) preferably made from a carbon/resin composite, which supports two end plugs (306, 307) making it possible to relieve the set of annuli of the radial component of the hydrostatic pressure. Furthermore, between the piezoelectric annuli (101) of the transmitter are inserted decoupling annuli (301) which are made as a three-layer structure including a hard and rigid internal layer (201) and two flexible and elastic external layers (202, 203). It makes it possible to increase the transmitting power of these acoustic transmitters.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: July 21, 1998
    Assignee: Thomson-CSF
    Inventors: Eric Sernit, Bernard Fromont, Pascal Bocquillon, Josette Adda