Patents Assigned to Leichtbau-Zentrum Sachsen GmbH
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Patent number: 11014311Abstract: Disclosed are a connecting arrangement of a fiber composite component with a second component and a process for producing the arrangement. The second component comprises at least one flat section having one or more cut-outs which pass through the flat section. The flat section is arranged between at least two sublayers of the fiber composite component and at least one of the at least two sublayers with a layer thickness SF comprises one or more embossments which have an essentially even layer thickness SF and are molded into the one or more cut-outs.Type: GrantFiled: December 7, 2012Date of Patent: May 25, 2021Assignee: LEICHTBAU-ZENTRUM SACHSEN GMBHInventors: Martin Lepper, Werner Hufenbach, Enrico Ladusch, Jens Werner, André Kiessling
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Patent number: 10683907Abstract: The invention relates to a spring (1, 23) comprising at least one tensile body (2, 17, 71, 76) that can be subjected to tensile stress and/or at least one compressive body (37) that can be subjected to compressive stress, the spring also comprising a force-displacement conversion unit (3, 18, 24) for converting the force-displacement of the spring force F, said force-displacement conversion unit (3, 18, 24) having a moveable input control element (6, 19, 29), to which the spring force can be applied and a moveable output control element (7, 20, 30, 54, 60, 68, 72) which is operatively connected to the tensile body (2, 17, 71, 76) or to the compressive body (37) in such a way that the spring force F produces a tensile stress in the tensile body (2, 17, 71, 76) or a compressive stress in the compressive body (37) in a specific force-displacement conversion ratio.Type: GrantFiled: November 8, 2013Date of Patent: June 16, 2020Assignee: Leichtbau-Zentrum Sachsen GmbHInventors: Werner Hufenbach, Martin Lepper, Jens Werner, Christian Koehler
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Patent number: 10618231Abstract: A method for producing a structural element (14) that comprises a hollow profile (1) made of continuous fibre-reinforced plastics material and a load-application element (15) is based on providing a hollow profile (1) on a liner (2), wherein the hollow profile (1) is impregnated by heating it to a temperature that is equal to or above the softening temperature of the matrix material (9) and below its cross-linking temperature, removing the liner (2) in an inner region (17) of the hollow profile (1), where the load-application element (15) is arranged, and consolidating and functionalising the structural element (14) by heating it to a temperature that is equal to or above the cross-linking temperature of the matrix material (9) and by applying a radially inwardly acting pressure to the structural element (14). The hollow profile (1) is moulded onto the load-application element (15) in a form-fitting manner.Type: GrantFiled: January 23, 2017Date of Patent: April 14, 2020Assignee: Leichtbau-Zentrum Sachsen GmbHInventors: Florian Lenz, Bernhard Witschel, Martin Lepper
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Patent number: 10266026Abstract: The invention relates to a device for introducing force into a component of fiber composite material by means of a screw connection having a bolt-like connecting element arranged in a passage of the component. The invention is based in particular on the problem of improving the durability of the screw connection on the component of fiber composite material. The object is achieved in that the screw connection has a two-part bush (6) which borders the passage (2) of the component (1) and accommodates the connecting element (9), wherein the first and the second bush part (6.1, 6.2) of the bush (6) are designed to engage in one another in axial extension, and each bush part (6.1, 6.2) has a radially extended union collar (15.1, 15.2) with a collar side (16.1, 16.2) facing the component (1), on which side a sliding surface is formed.Type: GrantFiled: November 22, 2012Date of Patent: April 23, 2019Assignee: LEICHTBAU-ZENTRUM SACHSEN GMBHInventors: Werner Hufenbach, Martin Lepper, Jens Werner, Enrico Ladusch
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Patent number: 10207467Abstract: In a pultrusion method for manufacturing a fiber-reinforced composite product comprising reinforcing fibers embedded in a thermoplastic matrix material, the following is performed along a path of pultrusion: providing a preform; further downstream, inductively heating the preform to a processing temperature of the thermoplastic matrix material; and, further downstream, introducing the preform into a die and consolidating the preform by means of the die while the preform passes through the die.Type: GrantFiled: February 5, 2015Date of Patent: February 19, 2019Assignees: Airbus Operations GmbH, Leichtbau-Zentrum Sachsen GmbHInventors: Werner Hufenbach, Christian Garthaus, Florian Lenz, Thomas Behnisch, Bernhard Witschel
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Patent number: 10040917Abstract: The invention relates to a 1C system and a method for manufacturing semifinished products (prepregs) and components with the 1C system. The problem is solved by a 1C system comprised of an epoxy resin and a secondary amine; the secondary amine is imidazole, an imidazole derivative or a complex of the general formula MeL4X2, wherein Me is a bivalent metal cation selected from copper, cobalt, nickel and zinc, L is a ligand selected from imidazole and an imidazole derivative, and X is an anion selected from fluoride, chloride, bromide, iodide and nitrate. Furthermore, the invention includes a method for manufacturing impregnated semifinished products for the production of duroplastic fiber-reinforced components using a 1C system.Type: GrantFiled: November 14, 2015Date of Patent: August 7, 2018Assignees: Leichtbau-Zentrum Sachsen GmbH, New Era Materials Sp. z o.o.Inventors: Ryszard Pilawka, Maciej Jarkowski, Werner Hufenbach, Martin Lepper, Ole Renner, Andrzej Czulak, Sirko Geller
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Patent number: 9701094Abstract: The object of the present invention is a layered semi-finished product having a layer sequence containing at least one layer of an unconsolidated fabric of reinforcing fibers. At reduced pressure, this layer sequence is arranged between a top and a bottom film connected to each other along their periphery in a pressure-retaining manner. In advantageous modifications of the layered semi-finished product according to the invention, the preforming of the semi-finished, as well as the inclusion of metallic inserts or other components into said semi-finished is intended. Furthermore, a method for producing the layered semi-finished product according to the invention is described.Type: GrantFiled: June 17, 2013Date of Patent: July 11, 2017Assignees: Technische Universität Dresden, Thyssenkrupp Steel Europe AG, Leichtbau-Zentrum Sachsen GmbHInventors: Torsten Krahnert, Lothar Patberg, Stefan Mayer, Marcus Knobloch, Jens Werner, Werner Hufenbach, Martin Lepper
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Publication number: 20170015055Abstract: The present invention relates to a method for producing thermosetting components from two or more semifinished composite-material products with textile fibre reinforcement and matrix material, wherein the semifinished composite-material products are fully consolidated, with the exception of local regions, and are brought into contact at the partially consolidated (gelled) regions (201, 211, 221, 241) such that the matrix material of the partially consolidated regions (201, 211, 221, 241) bonds and the regions joined together in this way are subsequently fully consolidated. Furthermore, a device which is suitable for producing the semifinished composite-material products is disclosed.Type: ApplicationFiled: March 6, 2015Publication date: January 19, 2017Applicant: Leichtbau-Zentrum Sachsen GmbHInventors: Werner HUFENBACH, Martin LEPPER, Jöm KIELE, Stefan KIPFELSBERGER, Jens WERNER
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Publication number: 20160194030Abstract: Longitudinal members for motor vehicles may generally include a supporting element that is releasably connectable to an energy absorption mechanism. The supporting element may typically include a joining zone that can be used to secure the supporting element to one or more chassis or drive components of the motor vehicle. The supporting element and the energy absorption mechanism may be comprised of fiber-reinforced plastic. More specifically, the supporting element may be comprised of a plurality of length portions having different fiber orientations. For example, a first length portion may have fibers oriented substantially parallel to a horizontal longitudinal plane about which the supporting element is positioned, whereas a second length portion between the first length portion and the energy absorption mechanism may have intersecting fibers oriented oblique to the horizontal longitudinal plane.Type: ApplicationFiled: May 21, 2014Publication date: July 7, 2016Applicants: THYSSENKRUPP STEEL EUROPE AG, TECHNISCHE UNIVERSITÄT DRESDEN, LEICHTBAU-ZENTRUM SACHSEN GMBHInventors: Lothar PATBERG, Stefan MAYER, Torsten KRAHNERT, Werner HUFENBACH, Enrico LADUSCH, Jens WERNER, André KIEßLING, Alexander HERBIG, Jörn KIELE, Martin LEPPER
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Publication number: 20160129940Abstract: The present disclosure relates to a protective apparatus that can be positioned along an underside of a motor vehicle and, in many cases, near a front or rear region of the motor vehicle. The protective apparatus may include an underbody made from fiber-reinforced plastic for protecting assemblies or components arranged above it against damage as a consequence of stone chipping or ground contact. Further, the underbody may have three-dimensionally structured regions for increasing its rigidity, and the underbody may be designed to absorb chassis and/or crash loads and may include integrated holders for movably attaching chassis links.Type: ApplicationFiled: May 21, 2014Publication date: May 12, 2016Applicants: THYSSENKRUPP STEEL EUROPE AG, TECHNISCHE UNIVERSITÄT DRESDEN, LEICHTBAU-ZENTRUM SACHSEN GMBHInventors: Lothar PATBERG, Stefan MAYER, Torsten KRAHNERT, Werner HUFENBACH, Enrico LADUSCH, Jens WERNER, André KIEßLING, Alexander HERBIG, Jörn KIELE, Martin LEPPER
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Publication number: 20150343719Abstract: The invention relates to a method and a device for infiltrating a fiber preform of a component of fiber composite material with a matrix material. On the method side, it is proposed that an elastic coating (3) is applied onto the fiber preform (1, 23, 37), wherein the elastic coating (3) is widened to form a gap space (22) between the fiber preform (1) and the coating (3). The matrix material (21) is then fed into the gap space (22) and the elastic coating (3) is subsequently pressed against the fiber preform (1, 23, 37). On the device side, it is claimed that an elastic coating (3) is arranged on the fiber preform (1, 23, 37) and means are provided, which are in operative connection with the elastic coating (3), by which the coating (3) can be widened while forming a gap space (22) between the fiber preform (1, 23, 37) and the coating (3). A matrix material (21) can be fed into the gap space (22) and the coating (3) can be pressed against the fiber preform (1, 23, 37).Type: ApplicationFiled: December 6, 2013Publication date: December 3, 2015Applicant: LEICHTBAU-ZENTRUM SACHSEN GMBHInventors: Werner HUFENBACH, Martin LEPPER, Jens WERNER, Christian KOEHLER, André BARTSCH
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Publication number: 20150217503Abstract: In a pultrusion method for manufacturing a fibre-reinforced composite product comprising reinforcing fibres embedded in a thermoplastic matrix material, the following is performed along a path of pultrusion: providing a preform; further downstream, inductively heating the preform to a processing temperature of the thermoplastic matrix material; and, further downstream, introducing the preform into a die and consolidating the preform by means of the die while the preform passes through the die.Type: ApplicationFiled: February 5, 2015Publication date: August 6, 2015Applicants: AIRBUS OPERATIONS GMBH, LEICHTBAU-ZENTRUM SACHSEN GMBHInventors: Werner Hufenbach, Christian Garthaus, Florian Lenz, Thomas Behnisch, Bernhard Witschel
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Patent number: 8910759Abstract: A vibration damper including a cylinder with a cylinder-side connection member. The at least one mounted component is fastened to the cylinder by a material bond. The cylinder and the mounted component are made of plastic. The mounted component and/or the cylinder are based on at least one ready-prepared semi-finished product that forms the surface of the vibration damper on at least one body side in the final state. Plastic supplemental volume fractions determine the finished body contour.Type: GrantFiled: September 9, 2010Date of Patent: December 16, 2014Assignees: ZF Friedrichshafen AG, Leichtbau-Zentrum Sachsen GmbHInventors: Hendrik Marquar, Manfred Schuler, Josef Renn, Klaus Stretz, Karin Sundermann, Michael Zutzmann, Werner Hufenbach, Martin Lepper, Jens Werner, Enrico Ladusch, Stefan Effmert
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Publication number: 20140321941Abstract: The invention relates to a device for introducing force into a component of fiber composite material by means of a screw connection having a bolt-like connecting element arranged in a passage of the component. The invention is based in particular on the problem of improving the durability of the screw connection on the component of fiber composite material. The object is achieved in that the screw connection has a two-part bush (6) which borders the passage (2) of the component (1) and accommodates the connecting element (9), wherein the first and the second bush part (6.1, 6.2) of the bush (6) are designed to engage in one another in axial extension, and each bush part (6.1, 6.2) has a radially extended union collar (15.1, 15.2) with a collar side (16.1, 16.2) facing the component (1), on which side a sliding surface is formed.Type: ApplicationFiled: November 22, 2012Publication date: October 30, 2014Applicant: Leichtbau-Zentrum Sachsen GMBHInventors: Werner Hufenbach, Martin Lepper, Jens Werner, Enrico Ladusch
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Patent number: 8297600Abstract: A plastic spring having a corrugated tubular body with connection surfaces at its ends for transmitting force between two structural component parts which are movable relative to one another. A connection surface of the plastic spring is constructed as a tubular body which engages in a cup element of one of the supporting structural component parts. The cup element can be filled with a displacement mass, and the tubular body accordingly carries out a displacing movement within the cup element for axially adjusting the preloading of the plastic spring.Type: GrantFiled: September 9, 2010Date of Patent: October 30, 2012Assignees: ZF Friedrichshafen AG, Leichtbau-Zentrum Sachsen GmbHInventors: Hendrik Marquar, Manfred Schuler, Josef Renn, Klaus Stretz, Karin Sundermann, Michael Zutzmann, Werner Hufenbach, Martin Lepper, Jens Werner, Christian Köhler
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Publication number: 20110056785Abstract: A vibration damper including a cylinder with a cylinder-side connection member. The at least one mounted component is fastened to the cylinder by a material bond. The cylinder and the mounted component are made of plastic. The mounted component and/or the cylinder are based on at least one ready-prepared semi-finished product that forms the surface of the vibration damper on at least one body side in the final state. Plastic supplemental volume fractions determine the finished body contour.Type: ApplicationFiled: September 9, 2010Publication date: March 10, 2011Applicants: ZF Friedrichshafen AG, Leichtbau-Zentrum Sachsen GmbHInventors: Hendrik MARQUAR, Manfred Schuler, Josef Renn, Klaus Stretz, Karin Sundermann, Michael Zutzmann, Werner Hufenbach, Martin Lepper, Jens Werner, Enrico Ladusch, Stefan Effmert
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Publication number: 20110057369Abstract: A plastic spring having a corrugated tubular body with connection surfaces at its ends for transmitting force between two structural component parts which are movable relative to one another. A connection surface of the plastic spring is constructed as a tubular body which engages in a cup element of one of the supporting structural component parts. The cup element can be filled with a displacement mass, and the tubular body accordingly carries out a displacing movement within the cup element for axially adjusting the preloading of the plastic spring.Type: ApplicationFiled: September 9, 2010Publication date: March 10, 2011Applicants: ZF Friedrichshafen AG, Leichtbau-Zentrum Sachsen GmbHInventors: Hendrik MARQUAR, Manfred SCHULER, Josef RENN, Klaus STRETZ, Karin SUNDERMANN, Michael ZUTZMANN, Werner HUFENBACH, Martin LEPPER, Jens WERNER, Christian KÖHLER