Patents by Inventor Nicholas Lhermet

Nicholas Lhermet 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).

  • Piezoelectric motor with progressive wave
    Patent number: 5648696
    Abstract: Traveling-wave piezoelectric motor comprising at least one rotor (20, 21), at least one annular stator (27, 28) and two groups of piezoelectric elements (29) dispersed around the stator, in permanent contact with the stator and excited by an alternating current with a .pi./2 phase shift between the groups so as to produce, at the surface of the stator, a traveling wavelike deformation. Piezoelectric elements consist of mutually independent polarized ceramic bars (29) arranged perpendicularly to the stator and each connected to the stator by an articulation (14).
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: July 15, 1997
    Assignee: Figest B.V.
    Inventors: Ronan Le Letty, Frank Claeyssen, Nicholas Lhermet, Paul Gonnard, Marie-Madeleine Guillemot-Amadei, Laurent Lebrun