Patents by Inventor Jens Jørgen Østergaard Kristensen
Jens Jørgen Østergaard Kristensen 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: 11879428Abstract: A wind turbine blade includes an elongated blade body extending from a root to a tip with a trailing edge, whereby at least one beam-like reinforcement means is integrated in the blade body adjacent to the trailing edge for reinforcing the region of the trailing edge, with the reinforcement means extending partly over the length of the blade body, wherein the reinforcement means is a pre-casted carbon beam including carbon fibers.Type: GrantFiled: April 22, 2021Date of Patent: January 23, 2024Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/SInventors: Lars Hedegaard, Allan Hurup, Jens Jørgen Østergaard Kristensen, Wei Sun
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Publication number: 20230167799Abstract: A wind turbine includes an elongated blade body extending from a root to a tip with a trailing edge, whereby at least one beam-like reinforcement means is integrated in the blade body adjacent to the trailing edge for reinforcing the region of the trailing edge, with the reinforcement means extending partly over the length of the blade body, wherein the reinforcement means is a pre-casted carbon beam including carbon fibers.Type: ApplicationFiled: April 22, 2021Publication date: June 1, 2023Inventors: Lars Hedegaard, Allan Hurup, Jens Jørgen Østergaard Kristensen, Wei Sun
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Patent number: 11549482Abstract: A wind turbine blade of a wind turbine, the wind turbine blade including a shell and a spar having at least one spar cap is provided. At least one of the at least one spar cap includes at least two longitudinal support structure elements, whereby at least two of the at least two longitudinal support structure elements are arranged adjacent to one another in a longitudinal direction of the wind turbine blade and at least one longitudinal support structure includes carbon fiber-reinforced plastic and at least one other longitudinal support structure includes at least one fiber-reinforced plastic different from carbon fiber-reinforced plastic.Type: GrantFiled: March 20, 2020Date of Patent: January 10, 2023Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/SInventors: Donato Girolamo, Jens Jørgen Østergaard Kristensen
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Patent number: 11454208Abstract: A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips is provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and the second abutment surfaces are non-planar. When the strip is stacked with similar strips, and subsequently integrated within shell of the wind turbine blade, the non-planar profile of the strips at least partially obviates formation of resin rich pockets at the interface of the spar cap and the shell and/or stress concentration between the edges of the spar cap and the shell.Type: GrantFiled: December 14, 2018Date of Patent: September 27, 2022Inventors: Donato Girolamo, Jens Jørgen Østergaard Kristensen, Michael Noerlem
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Publication number: 20220228553Abstract: A method for manufacturing a wind turbine blade, comprising the steps of: arranging (S2, S3) a joining portion (8) comprising a fibre lay-up inside adjacent blade sections, covering (S4) the joining portion (8) and the adjacent blade sections at least partially with a vacuum bag, and applying vacuum to a space (54) covered by the vacuum bag (19, 38), infusing at least the fibre lay-up (12, 13, 14, 15, 16, 17) with a resin (43) and curing (S5) the resin (43) to obtain a cured joining portion (44) joining the blade sections (20, 24) inside. A light-weight and at the same time strong blade section joint is provided. In particular, the strength of this laminate joint formed by vacuum infusion is comparable to the strength of the pristine laminate. Compared to a connection using an adhesive, the laminate joint formed by vacuum infusion provides a lighter and stronger blade section joint, in particular, a better weight-to-strength performance.Type: ApplicationFiled: May 15, 2020Publication date: July 21, 2022Inventors: Allan Hurup, Jens Jørgen Østergaard Kristensen, Gabriele Chiesura
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Patent number: 11231008Abstract: A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips are provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and/or the second abutment surfaces has corrugated profile such that a plurality of longitudinally extending grooves are defined on the abutment surface having the corrugated profile. When the strip is stacked with similar strips, and subsequently resin is infused, the grooves on the abutment surface having the corrugated profile facilitate transfer and flow of the resin into spaces between the stacked strips.Type: GrantFiled: December 13, 2018Date of Patent: January 25, 2022Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/SInventors: Donato Girolamo, Jens Jørgen Østergaard Kristensen, Michael Noerlem
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Publication number: 20200300216Abstract: A wind turbine blade of a wind turbine, the wind turbine blade including a shell and a spar having at least one spar cap is provided. At least one of the at least one spar cap includes at least two longitudinal support structure elements, whereby at least two of the at least two longitudinal support structure elements are arranged adjacent to one another in a longitudinal direction of the wind turbine blade and at least one longitudinal support structure includes carbon fiber-reinforced plastic and at least one other longitudinal support structure includes at least one fiber-reinforced plastic different from carbon fiber-reinforced plastic.Type: ApplicationFiled: March 20, 2020Publication date: September 24, 2020Inventors: Donato Girolamo, Jens Jørgen Østergaard Kristensen
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Publication number: 20190195190Abstract: A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips are provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and/or the second abutment surfaces has corrugated profile such that a plurality of longitudinally extending grooves are defined on the abutment surface having the corrugated profile. When the strip is stacked with similar strips, and subsequently resin is infused, the grooves on the abutment surface having the corrugated profile facilitate transfer and flow of the resin into spaces between the stacked strips.Type: ApplicationFiled: December 13, 2018Publication date: June 27, 2019Inventors: Donato Girolamo, Jens Jørgen Østergaard Kristensen, Michael Noerlem
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Publication number: 20190195191Abstract: A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips is provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and the second abutment surfaces are non-planar. When the strip is stacked with similar strips, and subsequently integrated within shell of the wind turbine blade, the non-planar profile of the strips at least partially obviates formation of resin rich pockets at the interface of the spar cap and the shell and/or stress concentration between the edges of the spar cap and the shell.Type: ApplicationFiled: December 14, 2018Publication date: June 27, 2019Inventors: Donato Girolamo, Jens Jørgen Østergaard Kristensen, Michael Noerlem
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Patent number: 9945353Abstract: A spoiler for a rotor blade includes a base member, which base member has a mounting face for mounting onto a surface of the rotor blade, and an aerodynamic member for detachably connecting onto the base member. Further, a wind turbine includes a number of rotor blades attached to a hub, wherein at least one rotor blade has such a spoiler mounted on a surface strip of the rotor blade. Also, a method of constructing a wind turbine is provided. A rotor blade is manufactured. A base member of the spoiler is mounted onto the rotor blade. The rotor blade is connected to a hub of the wind turbine. An aerodynamic member of the spoiler is attached onto the base member, wherein at least the mounting of the base member onto the rotor blade is performed prior to the connecting of the rotor blade to the hub.Type: GrantFiled: April 17, 2012Date of Patent: April 17, 2018Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Peder Bay Enevoldsen, Jens Jørgen Østergaard Kristensen, Carsten Thrue
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Patent number: 9920740Abstract: A wind turbine rotor blade element includes a first portion and a second portion connected to each other is described. The first portion includes a rear surface for facing a surface of a wind turbine rotor blade and the second portion includes a top surface which includes an angle between 90° and 180° with the rear surface of the first portion.Type: GrantFiled: January 18, 2012Date of Patent: March 20, 2018Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Peder Bay Enevoldsen, Jens Jørgen Østergaard Kristensen, Jason Stege, Carsten Thrue
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Patent number: 9567980Abstract: An arrangement for reducing noise which is generated by a wind turbine blade is provided. The wind turbine blade has a first panel and a second panel. The first and the second panel are arranged at a trailing edge of the wind turbine blade, wherein the first panel is adjacent to the second panel. The first panel includes a first transition zone and the second panel includes a second transition zone. The first transition zone and the second transition zone are engaged in a way that whistle tones produced by a gap of the wind turbine blade, the gap being located between the first panel and the second panel, is reduced or even avoided.Type: GrantFiled: February 7, 2013Date of Patent: February 14, 2017Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Jens Jørgen Østergaard Kristensen
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Patent number: 8896980Abstract: A method is provided for manufacturing a wind turbine rotor blade in which the blade is formed as a laminated structure by laying a composite material of fibre reinforcement material and/or core material in a mould defining the shape of the blade; evacuating the mould after laying the composite material; introducing a liquid polymer into the evacuated mould and wetting the composite material; curing the liquid polymer after the composite material has been wetted; and removing the mould after curing the liquid. At least one lightning conductor is integrated into the composite material before wetting it with the liquid polymer. Moreover, a wind turbine rotor blade made from a single laminated structure is provided with at least one lightning conductor is integrated into the laminated structure.Type: GrantFiled: April 5, 2012Date of Patent: November 25, 2014Assignee: Siemens AktiengesellschaftInventors: Jens Jørgen Østergaard Kristensen, Kaj Olsen
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Publication number: 20130223988Abstract: An arrangement for reducing noise which is generated by a wind turbine blade is provided. The wind turbine blade has a first panel and a second panel. The first and the second panel are arranged at a trailing edge of the wind turbine blade, wherein the first panel is adjacent to the second panel. The first panel includes a first transition zone and the second panel includes a second transition zone. The first transition zone and the second transition zone are engaged in a way that whistle tones produced by a gap of the wind turbine blade, the gap being located between the first panel and the second panel, is reduced or even avoided.Type: ApplicationFiled: February 7, 2013Publication date: August 29, 2013Inventor: Jens Jørgen Østergaard Kristensen
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Publication number: 20130108457Abstract: A blade of a wind turbine and a method to manufacture the blade are provided. The blade of the wind turbine includes at least one vortex-generator. The vortex generator is constructed and arranged at the blade in a way that it contributes to the aerodynamic characteristics of the blade. The blade includes a recess, which is constructed and arranged to receive at least a part of the vortex-generator. The vortex generator is fixed in the recess. The recess is at least partly arranged and at least partly embedded in a layer of paint of the blade-surface. The recess is established by a former plate, which is arranged on the surface of the blade before the blade-surface is painted and while the recess is established by removing the former plate after the painting is finished.Type: ApplicationFiled: October 28, 2011Publication date: May 2, 2013Inventors: Carsten Thrue, Jens Jørgen Østergaard Kristensen, Kim Tangager, Chad Lamborn
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Publication number: 20120269644Abstract: A spoiler for a rotor blade of a wind turbine includes a spoiler body and at least one mounting band arranged along a longitudinal edge of the spoiler body for mounting the spoiler onto a surface of the rotor blade. The at least one mounting band adapts to a curvature of the rotor blade surface. The spoiler body and the at least one mounting band are formed as a single entity. Further, a rotor blade for a wind turbine includes such a spoiler mounted onto a surface of the rotor blade. Further, a wind turbine includes a number of rotor blades attached to a hub, wherein at least one rotor blade includes such a spoiler mounted onto a surface of the rotor blade.Type: ApplicationFiled: April 10, 2012Publication date: October 25, 2012Inventors: Peder Bay Enevoldsen, Jens Jørgen Østergaard Kristensen, Jason Stege, Carsten Thrue
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Publication number: 20120194960Abstract: A method is provided for manufacturing a wind turbine rotor blade in which the blade is formed as a laminated structure by laying a composite material of fibre reinforcement material and/or core material in a mould defining the shape of the blade; evacuating the mould after laying the composite material; introducing a liquid polymer into the evacuated mould and wetting the composite material; curing the liquid polymer after the composite material has been wetted; and removing the mould after curing the liquid. At least one lightning conductor is integrated into the composite material before wetting it with the liquid polymer. Moreover, a wind turbine rotor blade made from a single laminated structure is provided with at least one lightning conductor is integrated into the laminated structure.Type: ApplicationFiled: April 5, 2012Publication date: August 2, 2012Inventors: Jens Jørgen Østergaard Kristensen, Kaj Olsen
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Publication number: 20120189455Abstract: A wind turbine rotor blade element includes a first portion and a second portion connected to each other is described. The first portion includes a rear surface for facing a surface of a wind turbine rotor blade and the second portion includes a top surface which includes an angle between 90° and 180° with the rear surface of the first portion.Type: ApplicationFiled: January 18, 2012Publication date: July 26, 2012Inventors: Peder Bay Enevoldsen, Jens Jørgen Østergaard Kristensen, Jason Stege, Carsten Thrue
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Patent number: 8191255Abstract: A method is provided for manufacturing a wind turbine rotor blade in which the blade is formed as a laminated structure by laying a composite material of fiber reinforcement material and/or core material in a mold defining the shape of the blade; evacuating the mold after laying the composite material; introducing a liquid polymer into the evacuated mold and wetting the composite material; curing the liquid polymer after the composite material has been wetted; and removing the mold after curing the liquid. At least one lightning conductor is integrated into the composite material before wetting it with the liquid polymer. Moreover, a wind turbine rotor blade made from a single laminated structure is provided with at least one lightning conductor is integrated into the laminated structure.Type: GrantFiled: April 14, 2009Date of Patent: June 5, 2012Assignee: Siemens AktiengesellschaftInventors: Jens Jørgen Østergaard Kristensen, Kaj Olsen
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Publication number: 20120100005Abstract: A blade of a wind turbine is provided. The blade includes at least one vortex-generator, which is positioned at the blade-surface. The vortex-generator is constructed and arranged in a way that it contributes to the aerodynamic characteristics of the blade. The vortex-generator includes a platform and an extension-part. The blade also includes a recess, which is constructed and arranged to receive at least a part of the platform of the vortex-generator. The platform is fixed at least partly within the recess.Type: ApplicationFiled: October 14, 2011Publication date: April 26, 2012Inventors: Jens Jørgen Østergaard Kristensen, Carsten Thrue