Patents by Inventor Jean-Thierry Audren
Jean-Thierry Audren 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).
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Patent number: 7921972Abstract: The invention concerns a system, in particular suitable for high power engines, comprising at least a rotor and means comprising active sections fit for making the rotor(s) rotate by their synchronized deformation, characterized in that the rotor material comprises an Al, Fe alloy with at least one other element, the alloy comprising at least more or less 80% in weight of Al and at least between 0.1 and 15.0% in weight in Fe.Type: GrantFiled: May 30, 2006Date of Patent: April 12, 2011Assignee: Sagem Defense SecuriteInventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Publication number: 20100247858Abstract: The invention concerns a system, in particular suitable for high power engines, comprising at least a rotor and means comprising active sections fit for making the rotor(s) rotate by their synchronised deformation, characterised in that the rotor material comprises an Al, Fe alloy with at least one other element, the alloy comprising at least more or less 80% in weight of Al and at least between 0.1 and 15.0% in weight in Fe.Type: ApplicationFiled: May 30, 2006Publication date: September 30, 2010Inventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Patent number: 7573624Abstract: In the orientation device of a transmission assembly for orienting at least one beam in elevation and/or in bearing, said assembly pivots on a fork about an elevation axis and is driven about this axis by a motor supported by said fork, which fork can pivot on a base about a bearing axis, perpendicular to the elevation axis and driven about this axis by a second motor supported by said base, and at least one of the motors is a travelling-wave piezoelectric rotary motor.Type: GrantFiled: October 3, 2007Date of Patent: August 11, 2009Assignee: Sagem Defense SecuriteInventors: Florent Thibout, Jacques Robineau, Jean-Thierry Audren, Julien Aragones
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Patent number: 7569974Abstract: The invention concerns an actuator which includes a linear piston (2) in an active material, and an inner sliding cylinder (7, 7?) which includes an outer cylinder (5, 5?) in which the said sliding cylinder ((7, 7?) is pre-stressed, with one cylinder being in an anisotropic material with a negative or approximately zero expansion coefficient along at least one axis and a positive or approximately zero expansion coefficient on at least one other axis, and the other cylinder having a positive thermal or approximately zero expansion coefficient.Type: GrantFiled: May 31, 2006Date of Patent: August 4, 2009Assignee: Sagem Defense SecuriteInventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Patent number: 7501742Abstract: The invention relates to an actuator comprising a sliding sleeve and an active piston, control means, wherein the sliding sleeve and the piston have at their interface at least one pair of friction layers, characterised in that at least one friction layer is made of a material selected from the following: an oxide of a Ti and Cr alloy; a zirconium matrix stabilised by Sc2O3 and/or Al2O3 and/or Cr2O3; a zirconium oxide in tetragonal phase stabilised by Y2O3; an alloy of Al, Fe and at least one other element.Type: GrantFiled: May 30, 2006Date of Patent: March 10, 2009Assignee: Sagem Defense SecuriteInventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Publication number: 20080252957Abstract: In the orientation device of a transmission assembly for orienting at least one beam in elevation and/or in bearing, said assembly pivots on a fork about an elevation axis and is driven about this axis by a motor supported by said fork, which fork can pivot on a base about a bearing axis, perpendicular to the elevation axis and driven about this axis by a second motor supported by said base, and at least one of the motors is a travelling-wave piezoelectric rotary motor.Type: ApplicationFiled: October 3, 2007Publication date: October 16, 2008Applicant: Sagem Defense SecuriteInventors: Florent Thibout, Jacques Robineau, Jean-Thierry Audren, Julien Aragones
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Patent number: 7298068Abstract: The invention concerns an actuator that includes an active piston, an inner sliding cylinder and an outer cylinder in which the said sliding cylinder is pre-stressed, where one of the cylinders is in a material with a negative thermal expansion coefficient or one that is close to zero, with the other cylinder having a positive thermal expansion coefficient, in which the material of the cylinder with negative expansion coefficient or one close to zero is one of the following materials: ?-ZrMo2O8 in cubic structure, Zr2W P2O12, a silicious faujasite, Lu2 (WO4)3, ZrW2O8 in cubic phase, with nanograins whose size is approximately between 10 nm and 75 nm, or any possible combination of these materials.Type: GrantFiled: May 31, 2006Date of Patent: November 20, 2007Assignee: Sagem Defense SecuriteInventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Publication number: 20070114886Abstract: The invention relates to an actuator comprising a sliding sleeve and an active piston, control means, wherein the sliding sleeve and the piston have at their interface at least one pair of friction layers, characterised in that at least one friction layer is made of a material selected from the following: an oxide of a Ti and Cr alloy; a zirconium matrix stabilised by Sc2O3 and/or Al2O3 and/or Cr2O3; a zirconium oxide in tetragonal phase stabilised by Y2O3; an alloy of Al, Fe and at least one other element.Type: ApplicationFiled: May 30, 2006Publication date: May 24, 2007Inventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Publication number: 20070114887Abstract: The invention concerns an actuator that includes an active piston, an inner sliding cylinder and an outer cylinder in which the said sliding cylinder is pre-stressed, where one of the cylinders is in a material with a negative thermal expansion coefficient or one that is close to zero, with the other cylinder having a positive thermal expansion coefficient, in which the material of the cylinder with negative expansion coefficient or one close to zero is one of the following materials: ?-ZrMo2O8 in cubic structure, Zr2W P2O12, a silicious faujasite, Lu2 (WO4)3, ZrW2O8 in cubic phase, with nanograins whose size is approximately between 10 nm and 75 nm, or any possible combination of these materials.Type: ApplicationFiled: May 31, 2006Publication date: May 24, 2007Inventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Patent number: 7205704Abstract: The invention relates to a device for displacing a moving part along a longitudinal axis relative to a housing, said device being symmetrical about a plane extending longitudinally relative to the moving part, the device comprising two structures that are secured to said moving part and elements of active material comprising at least two blocks extending between inside walls of each structure, with the elongation directions of the blocks being antisymmetrical about an axis substantially perpendicular to the displacement axis of the moving part, wherein the structures are flexible and suitable for displacing the moving part by deforming as a function of the elongation of the blocks.Type: GrantFiled: January 31, 2006Date of Patent: April 17, 2007Assignee: Sagem Defense SecuriteInventors: Jean Thierry Audren, Etienne Merlet, Jérôme Meleard, Charles Mangeot
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Patent number: 7165746Abstract: The invention provides an actuator for a control surface (7), in particular for a primary flight control of an aircraft, the actuator including a main actuator (3) in a main control line (1) for actuating the control surface (7), the actuator being characterized in that the actuator of the main control line (1) comprises a motor of the vibration motor type, and in that it further comprises, in a compensation, secondary control line (2), a compensation actuator (4) and spring-forming apparatus (5) interposed between the compensation actuator (4) and the control surface (7), the compensation actuator (4) tensioning or compressing the spring-forming apparatus so as to make them suitable for delivering a mean force to the control surface (7) so as to off-load from the main actuator (3) the mean force that it needs to deliver to the flight control (7).Type: GrantFiled: June 7, 2002Date of Patent: January 23, 2007Assignee: Sagem SAInventor: Jean Thierry Audren
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Publication number: 20060279177Abstract: The invention concerns an actuator which includes a linear piston (2) in an active material, and an inner sliding cylinder (7, 7?) which includes an outer cylinder (5, 5?) in which the said sliding cylinder ((7, 7?) is pre-stressed, with one cylinder being in an anisotropic material with a negative or approximately zero expansion coefficient along at least one axis and a positive or approximately zero expansion coefficient on at least one other axis, and the other cylinder having a positive thermal or approximately zero expansion coefficient.Type: ApplicationFiled: May 31, 2006Publication date: December 14, 2006Inventors: Oscar D'Almeida, Mathias Woydt, Jean-Thierry Audren
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Patent number: 7026746Abstract: The invention relates to a device for displacing a moving part along a longitudinal axis relative to a housing, said device being symmetrical about a plane extending longitudinally relative to the moving part, the device comprising two structures that are secured to said moving part and elements of active material comprising at least two blocks extending between inside walls of each structure, with the elongation directions of the blocks being antisymmetrical about an axis substantially perpendicular to the displacement axis of the moving part, wherein the structures are flexible and suitable for displacing the moving part by deforming as a function of the elongation of the blocks.Type: GrantFiled: October 3, 2003Date of Patent: April 11, 2006Assignee: Sagem SAInventors: Jean Thierry Audren, Etienne Merlet, Jérôme Meleard, Charles Mangeot
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Patent number: 6948595Abstract: An electromechanical multiple-disk brake actuator is provided. The actuator includes a first reversible assembly with a central screw, a first electric motor rotating the screw, a first nut displaceable over the screw when the screw is rotated and a connection between the screw and the nut permit reversible displacement. The actuator also has a second non-reversible assembly including an annular screw on the first nut, a second electric motor for rotating the annular screw and the first nut, and a second nut fixed to a frame but axially displaceable over the annual screw when the annular screw is rotated. A piston at one of the ends of the second nut presses the disk against one another to ensure braking.Type: GrantFiled: January 16, 2002Date of Patent: September 27, 2005Assignee: Sagem S.A.Inventors: Jean-Thierry Audren, Daniel Bezanere
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Patent number: 6907966Abstract: A linear actuator comprises a piston and a rotary electric motor together with means which are interposed between the electric motor and the piston to define a mechanical system for transforming rotary movement of the motor into linear displacement of said piston, the actuator is characterized in that the electric motor is a vibration type motor comprising at least a stator and a rotor together with excitation means for deforming said stator and/or said rotor in modes of vibration combining tangential vibration and normal vibration for driving said rotor in rotation, and in that the means interposed between the electric motor and the piston include means for mechanically decoupling said piston from said electric motor in the event of the electrical power supply to the elector motor being interrupted.Type: GrantFiled: May 16, 2002Date of Patent: June 21, 2005Assignee: Sagem SAInventors: Jean-Thierry Audren, Patrick Szebesta
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Patent number: 6888274Abstract: 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: GrantFiled: September 19, 2003Date of Patent: May 3, 2005Assignee: Sagem SAInventors: Mathias Woydt, Jean-Thierry Audren, Francois Hodar
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Publication number: 20040238688Abstract: The invention provides an actuator for a control surface (7), in particular for a primary flight control of an aircraft, the actuator including a main actuator (3) in a main control line (1) for actuating the control surface (7), the actuator being characterized in that the actuator of the main control line (1) comprises a motor of the vibration motor type, and in that it further comprises, in a compensation, secondary control line (2), a compensation actuator (4) and spring-forming means (5) interposed between the compensation actuator (4) and the control surface (7), said compensation actuator (4) tensioning or compressing the spring-forming means so as to make them suitable for delivering a mean force to the control surface (7) so as to off-load from the main actuator (3) the mean force that it needs to deliver to the flight control (7).Type: ApplicationFiled: July 19, 2004Publication date: December 2, 2004Inventor: Jean Thierry Audren
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Publication number: 20040169424Abstract: A linear actuator comprises a piston and a rotary electric motor together with means which are interposed between the electric motor and the piston to define a mechanical system for transforming rotary movement of the motor into linear displacement of said piston, the actuator is characterized in that the electric motor is a vibration type motor comprising at least a stator and a rotor together with excitation means for deforming said stator and/or said rotor in modes of vibration combining tangential vibration and normal vibration for driving said rotor in rotation, and in that the means interposed between the electric motor and the piston include means for mechanically decoupling said piston from said electric motor in the event of the electrical power supply to the elector motor being interrupted.Type: ApplicationFiled: March 26, 2004Publication date: September 2, 2004Inventors: Jean-Thierry Audren, Patrick Szebesta
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Publication number: 20040113520Abstract: 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: ApplicationFiled: September 19, 2003Publication date: June 17, 2004Inventors: Mathias Woydt, Jean Thierry Audren, Francois Hodar
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Publication number: 20040089505Abstract: The present invention relates to an electromechanical multiple-disk brake actuator for a means of transport, in particular for an aircraft.Type: ApplicationFiled: October 22, 2003Publication date: May 13, 2004Inventors: Jean-Thierry Audren, Daniel Bezanere