Patents by Inventor Pascal Amat
Pascal Amat 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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Publication number: 20240150009Abstract: A multi-layer braided article and a method of making the multi-layer braided article. The multi-layer braided article includes a braid extending along a first axis, wherein the braid is folded over itself to form a first layer and a second layer; and a wrapper laid over the first layer of the braid and extending circumferentially around the first axis, wherein the wrapper defines an edge of the first layer about which the braid is folded. The multi-layer braided article may form part of a blade for an aircraft. A sleeve may be provided around a conical portion of the article to connect the article to something else, such as a propeller hub, where the multi-layer braided article is formed as part of a blade. The sleeve may provide a primary or secondary load path.Type: ApplicationFiled: January 18, 2024Publication date: May 9, 2024Inventors: Bruno SEMINEL, Pascal AMAT, Arnaud ANDRZEJEWSKI
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Publication number: 20240109645Abstract: A propeller blade comprising a composite member. The composite member comprises a stack of plies and a matrix in which the stack of plies is embedded. At least one ply comprises a plurality of first yarns aligned in a first direction defining a plane of the ply and a plurality of second yarns extending transverse to the plane of the ply. Each second yarn does not extend through more than one ply. Also provided is a propelling system comprising the propeller blade, a composite propeller blade prepreg, and a method of forming a propeller blade.Type: ApplicationFiled: August 2, 2023Publication date: April 4, 2024Inventors: Pascal AMAT, Olivier PICOT
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Patent number: 11884378Abstract: A multi-layer braided article and a method of making the multi-layer braided article. The multi-layer braided article includes a braid extending along a first axis, wherein the braid is folded over itself to form a first layer and a second layer; and a wrapper laid over the first layer of the braid and extending circumferentially around the first axis, wherein the wrapper defines an edge of the first layer about which the braid is folded. The multi-layer braided article may form part of a blade for an aircraft. A sleeve may be provided around a conical portion of the article to connect the article to something else, such as a propeller hub, where the multi-layer braided article is formed as part of a blade. The sleeve may provide a primary or secondary load path.Type: GrantFiled: May 4, 2021Date of Patent: January 30, 2024Assignee: RATIER-FIGEAC SASInventors: Bruno Seminel, Pascal Amat, Arnaud Andrzejewski
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Patent number: 11674398Abstract: A propeller blade comprises a root, a tip distal from the root, a trailing edge extending from the root to the tip, a trailing edge, e.g. foam, insert, a shell forming an outer surface of the propeller blade and a plurality of stitches of yam extending through two parts of the shell adjacent the trailing edge, wherein the yarns do not extend through the trailing edge insert.Type: GrantFiled: April 26, 2022Date of Patent: June 13, 2023Assignee: RATIER-FIGEAC SASInventor: Pascal Amat
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Publication number: 20220251958Abstract: A propeller blade comprises a root, a tip distal from the root, a trailing edge extending from the root to the tip, a trailing edge, e.g. foam, insert, a shell forming an outer surface of the propeller blade and a plurality of stitches of yam extending through two parts of the shell adjacent the trailing edge, wherein the yarns do not extend through the trailing edge insert.Type: ApplicationFiled: April 26, 2022Publication date: August 11, 2022Inventor: Pascal AMAT
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Patent number: 11313230Abstract: A propeller blade comprises a root, a tip distal from the root, a trailing edge extending from the root to the tip, a trailing edge, e.g. foam, insert, a shell forming an outer surface of the propeller blade and a plurality of stitches of yarn extending through two parts of the shell adjacent the trailing edge, wherein the yarns do not extend through the trailing edge insert.Type: GrantFiled: November 8, 2017Date of Patent: April 26, 2022Assignee: RATIER-FIGEAC SASInventor: Pascal Amat
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Publication number: 20210403142Abstract: A multi-layer braided article and a method of making the multi-layer braided article. The multi-layer braided article includes a braid extending along a first axis, wherein the braid is folded over itself to form a first layer and a second layer; and a wrapper laid over the first layer of the braid and extending circumferentially around the first axis, wherein the wrapper defines an edge of the first layer about which the braid is folded. The multi-layer braided article may form part of a blade for an aircraft. A sleeve may be provided around a conical portion of the article to connect the article to something else, such as a propeller hub, where the multi-layer braided article is formed as part of a blade. The sleeve may provide a primary or secondary load path.Type: ApplicationFiled: May 4, 2021Publication date: December 30, 2021Inventors: Bruno SEMINEL, Pascal AMAT, Arnaud ANDRZEJEWSKI
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Patent number: 11090880Abstract: A multi-layer braided article comprises a braid folded over itself to form a first layer and a second layer, and one or more blind stitches in the first layer. The one or more stitches define an edge of the first layer about which the braid folds from the first layer into the second layer.Type: GrantFiled: March 13, 2018Date of Patent: August 17, 2021Assignee: RATIER-FIGEAC SASInventor: Pascal Amat
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Publication number: 20210206481Abstract: A method of applying a braided cover to a core comprises braiding a plurality of tows around the core from a plurality of bobbins. One or more properties of the tow on a respective bobbin vary along the length of the tow.Type: ApplicationFiled: January 6, 2021Publication date: July 8, 2021Inventors: Patrice BRION, Pascal AMAT
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Patent number: 10906267Abstract: A method of manufacturing a composite component comprises forming a core, surrounding the circumference of the core with a first layer of fabric, applying a second layer of fabric having a different coefficient of thermal expansion from the first layer such that the second layer extends around at least a portion of the circumference of the core and curing the component such that the second layer imparts a compressive or tensile force on the core.Type: GrantFiled: November 6, 2017Date of Patent: February 2, 2021Assignee: RATIER-FIGEAC SASInventors: Pascal Amat, Stéphane Grimal
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Patent number: 10618631Abstract: A spar for an airfoil comprises a core, e.g. a foam core, a central structural member extending through the core, an outer structural layer surrounding the core and central structural member and a plurality of yarns extending through the central structural member.Type: GrantFiled: November 10, 2017Date of Patent: April 14, 2020Assignee: RATIER-FIGEAC SASInventor: Pascal Amat
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Patent number: 10407159Abstract: A spar for a propeller blade comprises central structural member extending from a root to a tip of the spar. A first portion of the central structural member extends from the root of the spar and a second portion extends from the tip and adjoins the first portion. The central structural member includes a first plurality of plies of composite material on a pressure side thereof and a second plurality of plies of composite material on a suction side thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion from a leading edge to a trailing edge thereof. A plurality of yarns extends through the central structural member in at least the second portion.Type: GrantFiled: November 8, 2017Date of Patent: September 10, 2019Assignee: RATIER-FIGEAC SASInventor: Pascal Amat
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Publication number: 20180319100Abstract: A multi-layer braided article comprises a braid folded over itself to form a first layer and a second layer, and one or more blind stitches in the first layer. The one or more stitches define an edge of the first layer about which the braid folds from the first layer into the second layer.Type: ApplicationFiled: March 13, 2018Publication date: November 8, 2018Inventor: Pascal Amat
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Publication number: 20180127087Abstract: A spar for an airfoil comprises a core, e.g. a foam core, a central structural member extending through the core, an outer structural layer surrounding the core and central structural member and a plurality of yarns extending through the central structural member.Type: ApplicationFiled: November 10, 2017Publication date: May 10, 2018Inventor: Pascal AMAT
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Publication number: 20180127088Abstract: A spar for a propeller blade comprises central structural member extending from a root to a tip of the spar. A first portion of the central structural member extends from the root of the spar and a second portion extends from the tip and adjoins the first portion. The central structural member includes a first plurality of plies of composite material on a pressure side thereof and a second plurality of plies of composite material on a suction side thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion from a leading edge to a trailing edge thereof. A plurality of yarns extends through the central structural member in at least the second portion.Type: ApplicationFiled: November 8, 2017Publication date: May 10, 2018Inventor: Pascal AMAT
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Publication number: 20180128112Abstract: A propeller blade comprises a root, a tip distal from the root, a trailing edge extending from the root to the tip, a trailing edge, e.g. foam, insert, a shell forming an outer surface of the propeller blade and a plurality of stitches of yarn extending through two parts of the shell adjacent the trailing edge, wherein the yarns do not extend through the trailing edge insert.Type: ApplicationFiled: November 8, 2017Publication date: May 10, 2018Inventor: Pascal AMAT
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Publication number: 20180126687Abstract: A method of manufacturing a composite component comprises forming a core, surrounding the circumference of the core with a first layer of fabric, applying a second layer of fabric having a different coefficient of thermal expansion from the first layer such that the second layer extends around at least a portion of the circumference of the core and curing the component such that the second layer imparts a compressive or tensile force on the core.Type: ApplicationFiled: November 6, 2017Publication date: May 10, 2018Inventors: Pascal AMAT, Stéphane GRIMAL
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Patent number: 9366155Abstract: A propeller blade includes an aerodynamic portion and a blade shank, a hub assembly (28, 32) which provides anchoring in a hub, a blade shank assembly of the aerodynamic portion, a safety device including a safety element (24) which extends from a distal assembly in the aerodynamic portion to a proximal assembly (26, 27) in the blade shank and which is adapted to be able to anchor the aerodynamic portion in the blade shank, wherein the blade shank assembly is anchored radially outside the hub assembly, the proximal assembly is anchored to the blade shank radially inside the hub assembly, and the distal assembly and/or the proximal assembly has a strictly positive radial clearance (30).Type: GrantFiled: December 20, 2012Date of Patent: June 14, 2016Assignee: RATIER FIGEACInventors: Stanislas Tutaj, Bruno Petellaz, Pascal Amat