Patents by Inventor Laurent Gachet

Laurent Gachet 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).

  • Multiple coil eddy current probe equipped with a coil balancing device
    Patent number: 4651093
    Abstract: The invention relates to a multiple coil eddy current probe equipped with a coil balancing device. This probe comprises several coils forming an eddy current probe supplying in each case one signal. Each coil is regulated to overvoltage by a regulating unit, which acts on the frequency of the high frequency oscillator supplying each coil. Application is to the automatic positioning of a welding torch and to the inspection of the weld.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: March 17, 1987
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Marie Detriche, Didier Houche, Laurent Gachet