Patents by Inventor Harri Dittmar
Harri Dittmar 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: 20240066811Abstract: The aim of the invention is to provide a particularly planar component that is as simple as possible to produce and has an optimized stability. In order to achieve said aim, a component is proposed which comprises or is formed from a polymer matrix material and at least one non-compressible filler, wherein an average proportion of the at least one non-compressible filler is preferably approximately 75 wt. % or more, based on the total mass of the component and/or based on a local mass of the component in a locally compacted region of the component, wherein the component has one or more attachment regions for attaching the component to an additional component, and wherein a material of the component is compressed at least in the one or more attachment regions.Type: ApplicationFiled: November 6, 2023Publication date: February 29, 2024Applicant: ElringKlinger AGInventors: Robert WITZGALL, Harri DITTMAR
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Publication number: 20240001643Abstract: The aim of the invention is to provide a component, preferably a component for a vehicle, which is as stable as possible and which has an optimized electromagnetic compatibility. This is achieved by providing a component comprising a base element, which comprises or is made of at least one composite element, and a shielding element for electrically and/or electromagnetically shielding the component, wherein the shielding element comprises or is made of one or more foils, for example one or more metal foils, and is connected to the base element.Type: ApplicationFiled: September 16, 2023Publication date: January 4, 2024Applicant: ElringKlinger AGInventors: Martin EBERHARDT, Silvio KOCH, Robert WITZGALL, Harri DITTMAR
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Publication number: 20220289923Abstract: The aim of the invention is to provide a flat material that is as stable as possible and can be produced as easily as possible. According to the invention, this is achieved in that the flat material comprises a thermoplastic polymer matrix material in which a fiber material is received, wherein the fiber material comprises fibers or is made of fibers that are arranged at least approximately parallel to one another, and the proportion of the fiber material to the flat material equals approximately 75 wt. % or more, based on the total mass of the flat material.Type: ApplicationFiled: June 3, 2022Publication date: September 15, 2022Applicant: ElringKlinger AGInventors: Robert WITZGALL, Joachim SENGBUSCH, Harri DITTMAR
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Patent number: 9096022Abstract: Components are produced by injecting a thermoplastic melt into a mold, wherein a flat blank of two or more fiber woven or non-crimp fiber fabrics connected at one or both sides thereof with a randomly oriented fiber layer and impregnated with a thermoplastic is heated to above the softening temperature of the thermoplastic, the thus expanded porous blank is laid out adjacent to one of the two inner walls of the mold, the mold is closed, compressing the blank, reopened to a desired width, and thermoplastic melt is injected into the porous core.Type: GrantFiled: August 17, 2010Date of Patent: August 4, 2015Assignee: Quadrant Plastic Composites AGInventor: Harri Dittmar
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Patent number: 8540830Abstract: A continuous method for producing a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers, comprises blending thermoplastic fibers and reinforcing fibers together to form a nonwoven blend, consolidating the nonwoven blend by needling or by a thermal treatment, heating the consolidated nonwoven blend to a temperature above the softening temperature of the thermoplastic, compressing the consolidated nonwoven blend successively in a heated compression mold and in a cooled compression mold at a pressure of less than 0.8 bar for at least 3 seconds, and optionally applying functional layers to the semifinished product. The preferred product is a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers with an average length of 20 to 60 mm and an air pore content of 35 to 65 vol %.Type: GrantFiled: March 30, 2012Date of Patent: September 24, 2013Assignee: Quadrant Plastic Composites, AGInventors: Karl Ludwig Brentrup, Harri Dittmar
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Publication number: 20120244323Abstract: Components are produced by injecting a thermoplastic melt into a mold, wherein a flat blank of two or more fiber woven or non-crimp fiber fabrics connected at one or both sides thereof with a randomly oriented fiber layer and impregnated with a thermoplastic is heated to above the softening temperature of the thermoplastic, the thus expanded porous blank is laid out adjacent to one of the two inner walls of the mold, the mold is closed, compressing the blank, reopened to a desired width, and thermoplastic melt is injected into the porous core.Type: ApplicationFiled: August 17, 2010Publication date: September 27, 2012Applicant: QUADRANT PLASTIC COMPOSITES AGInventor: Harri Dittmar
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Publication number: 20120181716Abstract: A continuous method for producing a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers, comprises blending thermoplastic fibers and reinforcing fibers together to form a nonwoven blend, consolidating the nonwoven blend by needling or by a thermal treatment, heating the consolidated nonwoven blend to a temperature above the softening temperature of the thermoplastic, compressing the consolidated nonwoven blend successively in a heated compression mold and in a cooled compression mold at a pressure of less than 0.8 bar for at least 3 seconds, and optionally applying functional layers to the semifinished product. The preferred product is a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers with an average length of 20 to 60 mm and an air pore content of 35 to 65 vol %.Type: ApplicationFiled: March 30, 2012Publication date: July 19, 2012Applicant: QUADRANT PLASTIC COMPOSITES AGInventors: Karl-Ludwig Brentrup, Harri Dittmar
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Patent number: 8043542Abstract: Low density and acoustically absorbing panels are produced by consolidation in a mold of a heated part of a pre-cut, lofty, semi-finished product containing polypropylene fibers and reinforcing fibers and having an air pore content of 20 to 80 vol.-% wherein overlapping with the periphery of the pre-cut part are heated strips of polypropylene optionally containing up to 60 wt.-% reinforcing fibers, but containing 5 vol.-% or less of air pores.Type: GrantFiled: February 19, 2008Date of Patent: October 25, 2011Assignee: Quadrant Plastic Composites, AGInventors: Eberhard Pfeiffer, Harri Dittmar, Karl-Ludwig Brentrup
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Publication number: 20100116407Abstract: A continuous method for producing a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers, comprises blending thermoplastic fibers and reinforcing fibers together to form a nonwoven blend, consolidating the nonwoven blend by needling or by a thermal treatment, heating the consolidated nonwoven blend to a temperature above the softening temperature of the thermoplastic, compressing the consolidated nonwoven blend successively in a heated compression mold and in a cooled compression mold at a pressure of less than 0.8 bar for at least 3 seconds, and optionally applying functional layers to the semifinished product. The preferred product is a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers with an average length of 20 to 60 mm and an air pore content of 35 to 65 vol %.Type: ApplicationFiled: January 18, 2010Publication date: May 13, 2010Applicant: QUADRANT PLASTIC COMPOSITES AGInventors: Karl Ludwig Brentrup, Harri Dittmar
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Publication number: 20100032870Abstract: Low density and acoustically absorbing panels are produced by consolidation in a mold of a heated part of a pre-cut, lofty, semi-finished product containing polypropylene fibers and reinforcing fibers and having an air pore content of 20 to 80 vol.-% wherein overlapping with the periphery of the pre-cut part are heated strips of polypropylene optionally containing up to 60 wt.-% reinforcing fibers, but containing 5 vol.-% or less of air pores.Type: ApplicationFiled: February 19, 2008Publication date: February 11, 2010Applicant: QUADRANT PLASTIC COMPOSITES AGInventors: Eberhard Pfeiffer, Harri Dittmar, Karl-Ludwig Brentrup
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Patent number: 7132025Abstract: The invention relates to a continuous method of producing a thick, thermoformable, from a thermoplastic material and reinforcing fibers. The inventive method comprises the following steps: A) blending thermoplastic fibers and reinforcing fibers to give a dry-laid blended web, B) consolidating the blended web by needle felting, C) heating the consolidated blended web, and D) compacting it to give a semi-finished product.Type: GrantFiled: March 9, 2002Date of Patent: November 7, 2006Assignee: Quadrant Plastic Composites AGInventor: Harri Dittmar
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Publication number: 20060244170Abstract: A continuous method for producing a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers, comprises blending thermoplastic fibers and reinforcing fibers together to form a nonwoven blend, consolidating the nonwoven blend by needling or by a thermal treatment, heating the consolidated nonwoven blend to a temperature above the softening temperature of the thermoplastic, compressing the consolidated nonwoven blend successively in a heated compression mold and in a cooled compression mold at a pressure of less than 0.8 bar for at least 3 seconds, and optionally applying functional layers to the semifinished product. The preferred product is a thermoplastically moldable semifinished product of a thermoplastic material and reinforcing fibers with an average length of 20 to 60 mm and an air pore content of 35 to 65 vol %.Type: ApplicationFiled: April 4, 2006Publication date: November 2, 2006Applicant: Quadrant Plastic Composites AGInventors: Karl-Ludwig Brentrup, Harri Dittmar
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Publication number: 20060013990Abstract: A textile product as subject of the invention comprises at least one layer of non-metallic fibers and metal cords. The textile fabric is characterized in that the metal cords are bond to this layer of non-metallic fibers by means of stitches.Type: ApplicationFiled: June 3, 2005Publication date: January 19, 2006Inventors: Karl-Ludwig Brentrup, Harri Dittmar, Erwin Lokere, Jeroen Gallens
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Publication number: 20040177911Abstract: The invention relates to a continuous method for producing a thermoplastically deformable, thin semi-finished product consisting of a thermoplastic and long reinforcement fibres. The method comprises the following steps: A. the thermoplastic fibres and reinforcement fibres are mixed in their dry state to form a mixed nonwoven, B. the mixed nonwoven is bonded by needling, C. the bonded mixed nonwoven is heated and D. pressed to form a semi-finished product on a calender or in a smoothing device.Type: ApplicationFiled: December 4, 2003Publication date: September 16, 2004Inventor: Harri Dittmar
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Publication number: 20040112501Abstract: The invention relates to a continuous method of producing a thick, thermoformable, from a thermoplastic material and reinforcing fibers. The inventive method comprises the following steps: A) blending thermoplastic fibers and reinforcing fibers to give a dry-laid blended web, B) consolidating the blended web by needle felting, C) heating the consolidated blended web, and D) compacting it to give a semi-finished product.Type: ApplicationFiled: October 24, 2003Publication date: June 17, 2004Inventor: Harri Dittmar
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Patent number: 6680115Abstract: The present invention provides a mat having at least one primary area and at least one secondary area and adapted to reinforce a polymeric matrix material, the mat comprising (a) a first layer comprising a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat, at least a portion of outer surfaces of the first layer glass fiber strands having applied thereon at least a partial layer comprising at least a partially dried residue of first coating composition which is compatible with a polymeric matrix material, wherein at least a first portion of the first layer glass fiber strands are positioned within the at least one primary area at a primary strand density and at least a second portion of the first layer glass fiber strands are positioned within the at least one secondary area at a secondary strand density which is different from the primary strand density; and (b) a second layer comprising a plurality of randomly oriented glType: GrantFiled: May 31, 2001Date of Patent: January 20, 2004Assignee: PPG Industries Ohio, Inc.Inventors: Roger E. Mulder, Charles W. Peterson, Harri Dittmar
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Publication number: 20010033923Abstract: The present invention provides a mat having at least one primary area and at least one secondary area and adapted to reinforce a polymeric matrix material, the mat comprising (a) a first layer comprising a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat, at least a portion of outer surfaces of the first layer glass fiber strands having applied thereon at least a partial layer comprising at least a partially dried residue of first coating composition which is compatible with a polymeric matrix material, wherein at least a first portion of the first layer glass fiber strands are positioned within the at least one primary area at a primary strand density and at least a second portion of the first layer glass fiber strands are positioned within the at least one secondary area at a secondary strand density which is different from the primary strand density; and (b) a second layer comprising a plurality of randomly oriented glType: ApplicationFiled: May 31, 2001Publication date: October 25, 2001Inventors: Roger E. Mulder, Charles W. Peterson, Harri Dittmar
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Patent number: 6268047Abstract: A method for making a mat adapted to reinforce a polymeric matrix material, the method including the steps of (a) positioning a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat to form a first layer, at least a portion of outer surfaces of the first layer glass fiber strands having applied thereon at least a partial layer having at least a partially dried residue of a first coating composition which is compatible with a polymeric matrix material, wherein at least a first portion of the first layer glass fiber strands are positioned within an at least one primary area at a primary strand density and at least a second portion of the first layer glass fiber strands are positioned within an at least one secondary area at a secondary strand density which is different from the primary strand density; (b) dispersing a plurality of randomly oriented glass fiber strands within the at least one primary area and the at least one secType: GrantFiled: January 22, 1999Date of Patent: July 31, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Roger E. Mulder, Charles W. Peterson, Harri Dittmar