Patents by Inventor Francois Hodar

Francois Hodar 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).

  • Developments to high power motors
    Patent number: 6888274
    Abstract: This invention relates to a system, especially adapted for high-power motors, comprising at least one rotor (1a; 1b) and means (4a, 4b; 5a, 5b) comprising active elements (7, 8) capable of rotating the rotor(s) (1a; 1b) by their synchronized deformation; said rotating means of the rotor(s) comprising at least one petal (6) comprising a hot top (11), characterized in that the material of each hot top (11) is such that it has a thermal mass capacity (Cp22C) of greater than 0.35 [J/g/K], and/or the material of each rotor (1a; 1b) is such that it has a thermal capacity of greater than 2 [J/cm3/K].
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: May 3, 2005
    Assignee: Sagem SA
    Inventors: Mathias Woydt, Jean-Thierry Audren, Francois Hodar
  • Developments to high power motors
    Publication number: 20040113520
    Abstract: This invention relates to a system, especially adapted for high-power motors, comprising at least one rotor (1a; 1b) and means (4a, 4b; 5a, 5b) comprising active elements (7, 8) capable of rotating the rotor(s) (1a; 1b) by their synchronized deformation; said rotating means of the rotor(s) comprising at least one petal (6) comprising a hot top (11), characterized in that the material of each hot top (11) is such that it has a thermal mass capacity (Cp22C) of greater than 0.35 [J/g/K], and/or the material of each rotor (1a; 1b) is such that it has a thermal capacity of greater than 2 [J/cm3/K].
    Type: Application
    Filed: September 19, 2003
    Publication date: June 17, 2004
    Inventors: Mathias Woydt, Jean Thierry Audren, Francois Hodar
  • Piezoelectric motor
    Patent number: 6552470
    Abstract: The invention relates to a piezoelectric motor having a rotor and supply means (S0, S1) for supplying an electrical control voltage to at least one piezoelectric element (9) of the stator. According to the invention, the supply means (S0, S1) are arranged to supply an electrical control voltage having a DC component (V0) for shifting towards the expansion state of the piezoelectric elements (9).
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: April 22, 2003
    Assignee: Sagem SA
    Inventor: Francois Hodar
  • Piezoelectric motor
    Publication number: 20020113522
    Abstract: The invention relates to a piezoelectric motor having a rotor and supply means (S0, S1) for supplying an electrical control voltage to at least one piezoelectric element (9) of the stator. According to the invention, the supply means (S0, S1) are arranged to supply an electrical control voltage having a DC component (V0) for shifting towards the expansion state of the piezoelectric elements (9).
    Type: Application
    Filed: January 16, 2002
    Publication date: August 22, 2002
    Inventor: Francois Hodar