Patents by Inventor Louis Lefebvre
Louis Lefebvre 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: 11959418Abstract: An impeller (230) for a planet carrier of a planetary gear speed reducer of a turbomachine, is configured intended to be rotatably secured to the planet carrier and to be rotated about an axis A of the speed reducer. The impeller has an annular shape about the axis and includes lubrication means (43, 45, 238), in particular for lubricating bearings of planet gears of the speed reducer. The lubrication means include an annular cavity (238) situated at the inner periphery of the impeller. The impeller includes an inner peripheral wall (246) closing the cavity (238) in the radial direction, and the impeller includes an annular port (248) that extends around the axis and that opens in the axial direction into the cavity in order to supply it with lubricating oil.Type: GrantFiled: November 6, 2020Date of Patent: April 16, 2024Assignees: SAFRAN AIRCRAFT ENGINES, SAFRAN TRANSMISSION SYSTEMSInventors: Guillaume Patrice Kubiak, Julien Fabien Patrick Becoulet, Romain Guillaume Cuvillier, Simon Loïc Clément Lefebvre, Emmanuel Pierre Dimitri Patsouris, Didier Jean-Louis Yvon
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Patent number: 11905424Abstract: Core-shell microparticles, along with methods of their fabrication and use, are provided. The core-shell microparticles may include a core comprising a first metallic material having a first chromium content and a shell surrounding the core and comprising a second metallic material having a second chromium content that is less than the first chromium content. For example, the first chromium content may be 5% by weight or greater of elemental chromium within the first metallic material.Type: GrantFiled: April 1, 2019Date of Patent: February 20, 2024Assignee: General Electric CompanyInventors: Louis Lefebvre, Ehsan Marzbanrad, Ehsan Toyserkani, Boxin Zhao, Jeremy Vandenberg
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Patent number: 11724473Abstract: A method for purifying powdered silicon carbide is in the form of a starting material to form a silicon carbide having a purity of at least 99.9%. This method has the following method steps: providing a starting material having a grain size of less than 100 ?m and a silicon carbide content with at least 98% purity; and heating the starting material in a vacuum or oxygen-free atmosphere to a temperature above 1700° C. over a period of at least 8 minutes.Type: GrantFiled: July 2, 2020Date of Patent: August 15, 2023Assignee: KILLINE OPTICAL LTDInventors: Marc René André Louis Lefebvre, Hervé François Serge Jacquier
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Patent number: 11480482Abstract: A method for printing a strain sensor on a component using an aerosol ink, the method including depositing the aerosol ink on the component using a print head, the aerosol ink comprising chromium containing particles, and monitoring a printing environment parameter associated with printing environment conditions to confirm the printing environment parameter is within a predetermined environmental range of a printing environment parameter baseline value while depositing the aerosol ink on the component using the print head, the printing environment parameter baseline value a predetermined preferred printing environment parameter value within the predetermined environmental range, the monitoring including monitoring an atmospheric composition of the printing environment.Type: GrantFiled: November 2, 2020Date of Patent: October 25, 2022Assignee: General Electric CompanyInventors: Louis Lefebvre, Ehsan Toyserkani, Chinedu Francis Dibia, Elahe Jabari, Jeremy Vandenberg
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Publication number: 20220317474Abstract: A method for purifying powdered silicon carbide is in the form of a starting material to form a silicon carbide having a purity of at least 99.9%. This method has the following method steps: providing a starting material having a grain size of less than 100 ?m and a silicon carbide content with at least 98% purity; and heating the starting material in a vacuum or oxygen-free atmosphere to a temperature above 1700° C. over a period of at least 8 minutes.Type: ApplicationFiled: July 2, 2020Publication date: October 6, 2022Inventors: Marc René André Louis LEFEBVRE, Hervé François Serge JACQUIER
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Patent number: 11454490Abstract: A method for measuring strain of a component includes determining a preferred placement for a strain sensor on the component, and a preferred feature dimension and orientation for the strain sensor at the preferred placement on the component; and printing the strain sensor at the preferred placement on the component with the preferred feature dimension and orientation.Type: GrantFiled: April 1, 2019Date of Patent: September 27, 2022Assignee: General Electric CompanyInventors: Louis Lefebvre, Chinedu Francis Dibia
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Publication number: 20220241858Abstract: Methods for making a plurality of microparticles from a reaction solution that includes an organic acid in a solvent are provided. An example aerosol ink includes a plurality of palladium-chromium metallic microparticles dispersed in a solvent system, wherein the plurality of palladium-chromium metallic microparticles include a palladium-chromium alloy.Type: ApplicationFiled: April 25, 2022Publication date: August 4, 2022Inventors: Louis Lefebvre, Ehsan Marzbanrad, Ehsan Toyserkani, Jeremy Vandenberg
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Patent number: 11311941Abstract: Methods for making a plurality of microparticles from a reaction solution that includes an organic acid in a solvent are provided. The method may include adding a chromium salt and a palladium salt to the reaction solution; bringing the reaction solution to a reaction temperature of 0° C. to 150° C. to form palladium cations and chromium cations within the reaction solution such that the palladium cations and chromium cations combine to form the plurality of microparticles that precipitate from the reaction solution; and collecting the microparticles from the reaction mixture. The plurality of microparticles comprises a palladium-chromium alloy. The palladium-chromium alloy may comprise chromium in a weight percentage of 1% to 20% of the total weight of the palladium-chromium alloy.Type: GrantFiled: April 1, 2019Date of Patent: April 26, 2022Assignee: General Electric CompanyInventors: Louis Lefebvre, Ehsan Marzbanrad, Ehsan Toyserkani, Jeremy Vandenberg
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Publication number: 20210072099Abstract: A method for printing a strain sensor on a component using an aerosol ink, the method including depositing the aerosol ink on the component using a print head, the aerosol ink comprising chromium containing particles, and monitoring a printing environment parameter associated with printing environment conditions to confirm the printing environment parameter is within a predetermined environmental range of a printing environment parameter baseline value while depositing the aerosol ink on the component using the print head, the printing environment parameter baseline value a predetermined preferred printing environment parameter value within the predetermined environmental range, the monitoring including monitoring an atmospheric composition of the printing environment.Type: ApplicationFiled: November 2, 2020Publication date: March 11, 2021Inventors: Louis Lefebvre, Ehsan Toyserkani, Chinedu Francis Dibia, Elahe Jabari, Jeremy Vandenberg
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Patent number: 10942367Abstract: A method of manufacturing spectacle arms includes grooving an inner face of a first cover plate to form grooves and providing a gauge with longilineal inserts. Front and rear bridges join front and rear ends of the longilineal inserts and provide front and rear indexing. The gauge is set on the inner face of the first cover plate such that the longilineal inserts are disposed in the grooves and a second cover plate is pressed and bonded on the inner face of the first plate such that the longilineal inserts are inserted between the first and second cover plates. The plates are cut around the longilineal inserts with a cutting tool after the cutting tool is positioned and held in place using corresponding front and rear tool indexing.Type: GrantFiled: August 13, 2019Date of Patent: March 9, 2021Assignee: KILLINE OPTICAL LTDInventors: François Gardaz, Hervé François Serge Jacquier, Marc René André Louis Lefebvre
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Patent number: 10823626Abstract: A method for printing a strain sensor on a component using an aerosol ink includes depositing the aerosol ink on the component using a print head, the aerosol ink including chromium containing alloy particles; and monitoring a printing environment parameter to confirm the printing environment parameter is within a predetermined environmental range of a printing environment parameter baseline value while depositing the aerosol ink on the component using the print head.Type: GrantFiled: April 1, 2019Date of Patent: November 3, 2020Assignee: General Electric CompanyInventors: Louis Lefebvre, Ehsan Toyserkani, Chinedu Francis Dibia, Elahe Jabari, Jeremy Vandenberg
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Publication number: 20200308704Abstract: An aerosol ink is generally provided, along with methods of forming an aerosol ink. In one embodiment, the aerosol ink includes a plurality of chromium-containing metallic microparticles dispersed in a solvent system. Generally, the chromium-containing metallic microparticles comprise elemental chromium mixed with at least one alloying element. A non-contact method is also generally provided of forming a chromium-containing metallic layer on a surface of a substrate.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Louis Lefebvre, Ehsan Marzbanrad, Ehsan Toyserkani, Boxin Zhao, Elahe Jabari, Jeremy Vandenberg
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Publication number: 20200306834Abstract: Methods for making a plurality of microparticles from a reaction solution that includes an organic acid in a solvent are provided. The method may include adding a chromium salt and a palladium salt to the reaction solution; bringing the reaction solution to a reaction temperature of 0° C. to 150° C. to form palladium cations and chromium cations within the reaction solution such that the palladium cations and chromium cations combine to form the plurality of microparticles that precipitate from the reaction solution; and collecting the microparticles from the reaction mixture. The plurality of microparticles comprises a palladium-chromium alloy. The palladium-chromium alloy may comprise chromium in a weight percentage of 1% to 20% of the total weight of the palladium-chromium alloy.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Louis Lefebvre, Ehsan Marzbanrad, Ehsan Toyserkani, Jeremy Vandenberg
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Publication number: 20200306835Abstract: Core-shell microparticles, along with methods of their fabrication and use, are provided. The core-shell microparticles may include a core comprising a first metallic material having a first chromium content and a shell surrounding the core and comprising a second metallic material having a second chromium content that is less than the first chromium content. For example, the first chromium content may be 5% by weight or greater of elemental chromium within the first metallic material.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Louis Lefebvre, Ehsan Marzbanrad, Ehsan Toyserkani, Boxin Zhao, Jeremy Vandenberg
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Publication number: 20200309616Abstract: A method for printing a strain sensor on a component using an aerosol ink includes depositing the aerosol ink on the component using a print head, the aerosol ink including chromium containing alloy particles; and monitoring a printing environment parameter to confirm the printing environment parameter is within a predetermined environmental range of a printing environment parameter baseline value while depositing the aerosol ink on the component using the print head.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Louis Lefebvre, Ehsan Toyserkani, Chinedu Francis Dibia, Elahe Jabari, Jeremy Vandenberg
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Publication number: 20200309507Abstract: A method for measuring strain of a component includes determining a preferred placement for a strain sensor on the component, and a preferred feature dimension and orientation for the strain sensor at the preferred placement on the component; and printing the strain sensor at the preferred placement on the component with the preferred feature dimension and orientation.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Louis Lefebvre, Chinedu Francis Dibia
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Publication number: 20200050017Abstract: A method of manufacturing spectacle arms includes grooving an inner face of a first cover plate to form grooves and providing a gauge with longilineal inserts. Front and rear bridges join front and rear ends of the longilineal inserts and provide front and rear indexing. The gauge is set on the inner face of the first cover plate such that the longilineal inserts are disposed in the grooves and a second cover plate is pressed and bonded on the inner face of the first plate such that the longilineal inserts are inserted between the first and second cover plates. The plates are cut around the longilineal inserts with a cutting tool after the cutting tool is positioned and held in place using corresponding front and rear tool indexing.Type: ApplicationFiled: August 13, 2019Publication date: February 13, 2020Applicant: KILLINE OPTICAL LTDInventors: François GARDAZ, Hervé François Serge JACQUIER, Marc René André Louis LEFEBVRE
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Publication number: 20190264000Abstract: Disclosed is a reduction kit including a reducing compound and an open-cell polymer foam, the surface of which includes a polymer having a catechol unit. Also disclosed is a reducing composition including an open-cell foam, the surface of which includes a polymer having a catechol unit, the foam being functionalized by a reducing compound. The use of the kit or composition as a reagent in reduction reactions is also disclosed.Type: ApplicationFiled: July 25, 2017Publication date: August 29, 2019Inventors: David EDOUARD, Louis LEFEBVRE, Loïc JIERRY, Vincent RITLENG, Julien KELBER
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Publication number: 20170053510Abstract: A system and method for monitoring the presence of a child while in a child or infant restraint.Type: ApplicationFiled: August 17, 2015Publication date: February 23, 2017Inventor: Robert Louis Lefebvre
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Patent number: 7264075Abstract: A snowmobile is provided that includes a frame, an engine, an endless belt drive system, and an air intake system for the engine. The frame has a forward portion and an aft portion. The engine is mounted to the forward portion and the belt drive system is mounted to the aft portion and is operatively connected to the engine. The engine is a turbocharged four-stroke type engine.Type: GrantFiled: August 25, 2005Date of Patent: September 4, 2007Assignee: Bombardier Recreational Products Inc.Inventors: Bruno Schuemacher, Sylvain Matte, Louis Lefebvre