Patents by Inventor Herbert DE GERSEM

Herbert DE GERSEM 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).

  • Electrical machines
    Patent number: 10630209
    Abstract: A stator or a rotor for use in an electrical machine comprises a composite element having a rigid mass suitable for including at least one magnetostrictive electrode bar, at least one magnetostrictive electrode bar, and a piezoelectric material in between the rigid mass material and the magnetostrictive electrode bars. The rigid mass, the magnetostrictive electrode bars and the piezoelectric material are arranged such that applying a voltage between the rigid mass and one or more magnetostrictive electrodes, causes piezoelectric effects in the piezoelectric material inducing stress in the bi-axial plane of the at least one magnetostrictive bar and an altered permeability of the at least one magnetostrictive bar in a direction perpendicular to the bi-axial stress plane.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: April 21, 2020
    Assignee: KATHOLIEKE UNIVERSITEIT LEUVEN
    Inventors: Herbert De Gersem, Georges Gielen, Joan Peuteman, Davy Pissoort, Dries Vanoost
  • Electrical Machines
    Publication number: 20170338752
    Abstract: A stator or a rotor for use in an electrical machine comprises a composite element having a rigid mass suitable for including at least one magnetostrictive electrode bar, at least one magnetostrictive electrode bar, and a piezoelectric material in between the rigid mass material and the magnetostrictive electrode bars. The rigid mass, the magnetostrictive electrode bars and the piezoelectric material are arranged such that applying a voltage between the rigid mass and one or more magnetostrictive electrodes, causes piezoelectric effects in the piezoelectric material inducing stress in the bi-axial plane of the at least one magnetostrictive bar and an altered permeability of the at least one magnetostrictive bar in a direction perpendicular to the bi-axial stress plane.
    Type: Application
    Filed: October 28, 2015
    Publication date: November 23, 2017
    Inventors: Herbert DE GERSEM, Georges GIELEN, Joan PEUTEMAN, Davy PISSOORT, Dries VANOOST