Patents by Inventor Stéphane Vago

Stéphane Vago 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).

  • Publication number: 20210003434
    Abstract: Techniques are disclosed for configuring a bi-material enclosure for an acoustic sensor assembly, such as for use in a water or gas metering applications, or other applications using piezo and/or transducer devices. A plastic housing with mechanical reinforcements (e.g., 40% glass fiber) provides the advantage of strength and resistance to a high-pressure environment encountered during use. Use of a plastic sleeve having less or no reinforcements provides more consistent signal reception and data generation between different transducer assemblies under the same or similar conditions. Accordingly, the bi-material transducer enclosure provides a high resistance to pressure and/or high reproducibility of signal-transmission characteristics between transducer assemblies.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 7, 2021
    Inventors: Abbas Sabraoui, Michel Bottner, Stephane Vago, Gregory Pastor
  • Patent number: 6273559
    Abstract: One or several jets (14) of an electrically conducting liquid such as ink, are emitted at a given speed Vj and are stimulated so as to form drops (22, 24) at a frequency F, at two break off points (C, L) separated by a distance &Dgr;D less than the wavelength &lgr; of the jet, defined by the relation &lgr;=Vj/F. Two contiguous areas are created (20) in the vicinity of these two break off points (C, L), and the potential of these two areas is brought up to constant electrical potentials with opposite signs (V1, V2). Different quantities of electric charge are thus applied on the drops (22, 24), which are relatively constant even if the break off points should vary. A deflection device (30) then deviates the drops to be recycled (24) and the drops to be printed (22) depending on their charge, which depends on their break off point.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: August 14, 2001
    Assignee: Imaje S.A.
    Inventors: Stéphane Vago, Max Perrin
  • Patent number: 5489929
    Abstract: In a liquid projection method and a high-resolution printing device in a vibrationally excited continuous ink-jet printer, an ink jet is divided into drops in the vicinity of a charging device for the electrostatic charging of these drops creating an electrical field that is asymmetrical with respect to the axis of the jet. The method comprises a first step of creating a single microdrop at the upstream end of a main drop by the application of a charging voltage V.sub.M higher than the Rayleigh voltage to the charging device when this main drop appears. Then a second step of deflecting the microdrop to be used for the printing by the application, to the following main drop, of a charging voltage V.sub.c, lower than the voltage V.sub.M and lower than the Rayleigh voltage, that can be modulated as a function of the path chosen for the microdrop towards the printing medium. The charging device can take the form of two half-planes intersecting each other in a direction parallel to the axis of the ink jet.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: February 6, 1996
    Assignee: Imaje S.A.
    Inventor: Stephane Vago