Patents by Inventor Olivier Lespinet

Olivier Lespinet 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).

  • Measurement of wall thicknesses particularly of a blade, by eddy currents
    Patent number: 7550968
    Abstract: A method for evaluating the wall thickness of a hollow part, of the turbomachine blade type, at least at a point having a determined radius of curvature at this point, within determined ranges of radii of curvature and thicknesses, including the determination of impedance values of an electrical circuit formed by an eddy current detector applied to the wall, and the insertion of these values into a digital processing unit with a neural network, wherein the network parameters have been defined in advance by learning on spacers having a determined radius of curvature and thickness in the ranges.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: June 23, 2009
    Assignees: SNECMA, CNRS
    Inventors: Pierre-Yves Joubert, Yann Le Bihan, Olivier Lespinet, Aleksandra Mikic
  • MEASUREMENT OF WALL THICKNESSES, PARTICULARLY OF A BLADE, BY EDDY CURRENTS
    Publication number: 20080111543
    Abstract: The present invention relates to a method for evaluating the wall thickness of a hollow part, of the turbomachine blade type, at least at a point having a determined radius of curvature at this point, within determined ranges of radii of curvature and thicknesses, comprising the determination of impedance values of an electrical circuit formed by an eddy current detector (20) applied to the wall, and the insertion of these values into a digital processing unit with a neural network, wherein the network parameters have been defined in advance by learning on spacers having a determined radius of curvature and thickness in said ranges.
    Type: Application
    Filed: April 25, 2007
    Publication date: May 15, 2008
    Applicants: SNECMA, CNRS
    Inventors: Pierre-Yves Joubert, Yann Le Bihan, Olivier Lespinet, Aleksandra Mikic
  • Method and an instrument for inspection of the bond between a honeycomb core and a skin
    Publication number: 20040223638
    Abstract: The method for inspection of the bond between a honeycomb core and a skin comprises the following operations:
    Type: Application
    Filed: April 26, 2004
    Publication date: November 11, 2004
    Applicant: SNECMA MOTEURS
    Inventors: Olivier Lespinet, Jerome Menini, Franck Panizzoli
  • Method for measuring a wall thickness of a hollow vane
    Patent number: 6806703
    Abstract: An eddy current detector includes two poles aligned in the direction of extension of partitions located behind a wall, wherein the thickness must be measured, but which interfere with the measurements. The influence of the partitions is decreased by the core of the detector including two poles aligned in the direction of the extension of the partitions and by using a logical system to correct the results obtained according to preliminary results obtained on a reference surface.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: October 19, 2004
    Assignees: Snecma Moteurs, Centre National de la Recherche Scientifique
    Inventors: Yann Le Bihan, Olivier Lespinet, Alain Mourenko, Franck Paul Dominique Vital Panizzoli, Dominique Marc Bruno Placko, Edouardo-Agapito Santander-Rojas
  • Hollow vane wall thickness measurement method
    Publication number: 20030184287
    Abstract: An eddy current detector (4) comprises two poles aligned in the direction of extension of partitions (3) located behind a wall (2) wherein the thickness must be measured, but which interfere with the measurements. The influence of the partitions (3) is decreased if the core (6) of the detector (4) comprises two poles aligned in the direction of the extension of the partitions (3) and if a logical system is used to correct the results obtained according to preliminary results obtained on a reference surface.
    Type: Application
    Filed: December 9, 2002
    Publication date: October 2, 2003
    Applicants: SNECMA MOTEURS, Centre National De La Recherche Scient
    Inventors: Yann Le Bihan, Olivier Lespinet, Alain Mourenko, Franck Paul Dominique Panizzoli, Dominique Marc Bruno Placko, Edouardo - Agapito Santander-Rojas