Patents by Inventor Nicolas Garrigou

Nicolas Garrigou 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).

  • Method for measuring the thickness of a coating layer by inducing magnetic fields
    Patent number: 10006752
    Abstract: A method of measuring the thickness of a coating layer of a workpiece, the layer being formed on a substrate of the workpiece. The method comprises several steps. First, feeding a probe alternating electrical signal to induction device in order to induce a magnetic field in the workpiece. Second, measuring at least one physical characteristic that varies as a function of the magnetic field induced in the workpiece. Third, determining first and second values of an indicator, the values being determined respectively from measurements of the physical characteristic taken when the electrical signal has first and second given frequencies. Forth, calculating the difference between the first and second values of the indicator and determining the thickness of the coating layer as a function of the difference and of predetermined data correlating: the difference between the values of the indicator; and corresponding values for thicknesses of the coating layer.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: June 26, 2018
    Assignees: MESSIER-BUGATTI-DOWTY, AIRCELLE
    Inventors: Lionel Gay, Nicolas Garrigou, Francis Monerie-Moulin
  • METHOD FOR MEASURING THE THICKNESS OF A COATING LAYER BY INDUCING MAGNETIC FIELDS
    Publication number: 20140324384
    Abstract: A method of measuring the thickness of a coating layer of a workpiece, the layer being formed on a substrate of the workpiece. The method comprises several steps. First, feeding a probe alternating electrical signal to induction device in order to induce a magnetic field in the workpiece. Second, measuring at least one physical characteristic that varies as a function of the magnetic field induced in the workpiece. Third, determining first and second values of an indicator, the values being determined respectively from measurements of the physical characteristic taken when the electrical signal has first and second given frequencies. Forth, calculating the difference between the first and second values of the indicator and determining the thickness of the coating layer as a function of the difference and of predetermined data correlating: the difference between the values of the indicator; and corresponding values for thicknesses of the coating layer.
    Type: Application
    Filed: October 17, 2012
    Publication date: October 30, 2014
    Applicants: AIRCELLE, MESSIER-BUGATTI-DOWTY
    Inventors: Lionel Gay, Nicolas Garrigou, Francis Monerie-Moulin