Patents by Inventor Jean-Marie Pierrard

Jean-Marie Pierrard 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 formation of a fan jet of liquid
    Patent number: 5816507
    Abstract: Device for the formation of a fan jet (J) of liquid, of the type comprising:means (3) for supplying a liquid;means for distributing the delivery and for controlling the turbulence of the liquid supplied;outlet means (4) for the fan jet (J) formed, characterized in that the means for distributing the delivery and for controlling the turbulence of the liquid supplied are formed:from a first fixed curved conduit (15) for the flow of the liquid;from a second curved conduit (25) having an axis parallel to that of the first conduit (15);from means (26) for forming calibrated vortices having an axis parallel to the curved flow, so as to bring about a harmonic transverse distribution of the speeds and pressures and to control the scale and level of the vortices.Planned uses: headbox of a paper machine or installation for the couching of paper.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: October 6, 1998
    Assignees: Centre Technique de l'Industrie des Papiers, Valmet Corporation
    Inventors: Salah Skali Lami, Gerard Cognet, Jean-Marie Pierrard