Patents by Inventor Sébastien LOUCHARD
Sébastien LOUCHARD 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: 11629644Abstract: An acoustic attenuation panel for a propulsion assembly includes an acoustic front skin having perforations, and a central structure formed from partitions arranged perpendicularly in order to make up cells, wherein the front skin and the central structure form the panel which is made as a single piece and is provided for directly covering a surface of an element of the propulsion assembly forming a rear skin which closes the cells of the central structure at the rear.Type: GrantFiled: May 14, 2019Date of Patent: April 18, 2023Assignees: Safran Nacelles, SAFRANInventors: Marc Versaevel, Jean-Philippe Ginefri, Fabrice Provost, Jeremy Quesnel, Wouter Balk, Sébastien Louchard, Loïc Hervé André Le Boulicaut
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Patent number: 10913181Abstract: A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.Type: GrantFiled: February 18, 2020Date of Patent: February 9, 2021Assignee: Safran NacellesInventors: Benjamin Provost, Bertrand Desjoyeaux, Sébastien Louchard, Fabien Depeux
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Patent number: 10746046Abstract: The present disclosure provides a method for manufacturing a preform made of reinforcement fibers woven in a longitudinal direction. The preform is impregnated with resin in order to form an elongated element having a variable transverse cross-section. In one form, the method includes the step of simultaneously including a reduction (or increase) in width and an increase (or reduction) in height. The variable cross-section includes, along the length thereof, a consistent number (c) of continuous warp threads arranged in layers. The method for reducing width includes carrying out a change in weave, adding additional weft threads, and simultaneously drawing the teeth of the longitudinal beater reed closer together so as to increase the number of layers.Type: GrantFiled: August 9, 2017Date of Patent: August 18, 2020Assignee: SAFRAN NACELLESInventors: Benjamin Provost, Bertrand Desjoyeaux, Sébastien Louchard, Arnaud Marical
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Publication number: 20200180188Abstract: A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.Type: ApplicationFiled: February 18, 2020Publication date: June 11, 2020Applicant: SAFRAN NACELLESInventors: Benjamin PROVOST, Bertrand DESJOYEAUX, Sébastien LOUCHARD, Fabien DEPEUX
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Patent number: 10654194Abstract: A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.Type: GrantFiled: January 4, 2019Date of Patent: May 19, 2020Assignee: Safran NacellesInventors: Benjamin Provost, Bertrand Desjoyeaux, Sébastien Louchard, Fabien Depeux
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Patent number: 10479049Abstract: The present disclosure relates to a part made from composite material that includes a base and a T-shaped reinforcement. The T-shaped reinforcement includes a first L-shaped element having a first right-angled connection portion and a second L-shaped element having a second right-angled connection portion. The part further includes a plurality of needles, each connecting the base to the T-shaped reinforcement of the part, close to the connection portions and extending in multiple directions so as to oppose, in particular, the separation of the base from the T-shaped reinforcement.Type: GrantFiled: May 9, 2018Date of Patent: November 19, 2019Assignee: Safran NacellesInventors: Arnaud Delehouze, Etienne Germain, Sébastien Louchard, Benjamin Provost
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Publication number: 20190264614Abstract: An acoustic attenuation panel for a propulsion assembly includes an acoustic front skin having perforations, and a central structure formed from partitions arranged perpendicularly in order to make up cells, wherein the front skin and the central structure form the panel which is made as a single piece and is provided for directly covering a surface of an element of the propulsion assembly forming a rear skin which closes the cells of the central structure at the rear.Type: ApplicationFiled: May 14, 2019Publication date: August 29, 2019Applicants: SAFRAN, Safran NacellesInventors: Marc VERSAEVEL, Jean-Philippe GINEFRI, Fabrice PROVOST, Jeremy QUESNEL, Wouter BALK, Sébastien LOUCHARD, Loïc Hervé André LE BOULICAUT
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Publication number: 20190168419Abstract: A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.Type: ApplicationFiled: January 4, 2019Publication date: June 6, 2019Applicant: SAFRAN NACELLESInventors: Benjamin PROVOST, Bertrand DESJOYEAUX, Sébastien LOUCHARD, Fabien DEPEUX
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Publication number: 20190039265Abstract: The present disclosure relates to a preform that includes layers of textile reinforcements that are arranged in a mold by an automatic placement head and are connected to each other, and which can be dry or pre-impregnated, in order to form a part made of composite materials after curing of an impregnating resin. The part includes a folding produced by conformation of the preform after the placement of the layers of textile reinforcements. At the folding, there are spacings between at least some of the layers of textile reinforcements.Type: ApplicationFiled: October 9, 2018Publication date: February 7, 2019Applicant: Safran NacellesInventors: Bertrand DESJOYEAUX, Benjamin PROVOST, Sébastien LOUCHARD, Fabien DEPEUX
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Publication number: 20180257338Abstract: The present disclosure relates to a part made from composite material that includes a base and a T-shaped reinforcement. The T-shaped reinforcement includes a first L-shaped element having a first right-angled connection portion and a second L-shaped element having a second right-angled connection portion. The part further includes a plurality of needles, each connecting the base to the T-shaped reinforcement of the part, close to the connection portions and extending in multiple directions so as to oppose, in particular, the separation of the base from the T-shaped reinforcement.Type: ApplicationFiled: May 9, 2018Publication date: September 13, 2018Applicant: Safran NacellesInventors: Arnaud DELEHOUZE, Etienne GERMAIN, Sébastien LOUCHARD, Benjamin PROVOST
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Publication number: 20170370247Abstract: The present disclosure provides a method for manufacturing a preform made of reinforcement fibers woven in a longitudinal direction. The preform is impregnated with resin in order to form an elongated element having a variable transverse cross-section. In one form, the method includes the step of simultaneously including a reduction (or increase) in width and an increase (or reduction) in height. The variable cross-section includes, along the length thereof, a consistent number (c) of continuous warp threads arranged in layers. The method for reducing width includes carrying out a change in weave, adding additional weft threads, and simultaneously drawing the teeth of the longitudinal beater reed closer together so as to increase the number of layers.Type: ApplicationFiled: August 9, 2017Publication date: December 28, 2017Applicant: Safran NacellesInventors: Benjamin PROVOST, Bertrand DESJOYEAUX, Sébastien LOUCHARD, Arnaud MARICAL
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Publication number: 20150125654Abstract: A method for manufacturing a T-shaped composite part by resin transfer molding, includes the following steps: making a preform with a planar stack of plies and with two L-shaped stacks of plies; placing the preform so that the L-shaped stacks meet between two cores of a resin transfer molding tool; inserting and removing fibers through the planar stack in a direction perpendicular or quasi-perpendicular to the planar stack and so that loops are formed inside a portion of the L-shaped stacks which are substantially perpendicular to the planar stack; closing the resin transfer molding tool; injecting a resin into the resin transfer molding tool; and heating the resin transfer molding tool to cure the resin.Type: ApplicationFiled: January 16, 2015Publication date: May 7, 2015Inventors: Didier LERETOUR, Sébastien LOUCHARD, Laurent DUBOIS, Claire DUPUIS