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).

  • Publication number: 20240066811
    Abstract: 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: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Applicant: ElringKlinger AG
    Inventors: Robert WITZGALL, Harri DITTMAR
  • Publication number: 20240001643
    Abstract: 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: Application
    Filed: September 16, 2023
    Publication date: January 4, 2024
    Applicant: ElringKlinger AG
    Inventors: Martin EBERHARDT, Silvio KOCH, Robert WITZGALL, Harri DITTMAR
  • Publication number: 20220289923
    Abstract: 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: Application
    Filed: June 3, 2022
    Publication date: September 15, 2022
    Applicant: ElringKlinger AG
    Inventors: Robert WITZGALL, Joachim SENGBUSCH, Harri DITTMAR
  • Patent number: 9096022
    Abstract: 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: Grant
    Filed: August 17, 2010
    Date of Patent: August 4, 2015
    Assignee: Quadrant Plastic Composites AG
    Inventor: Harri Dittmar
  • Patent number: 8540830
    Abstract: 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: Grant
    Filed: March 30, 2012
    Date of Patent: September 24, 2013
    Assignee: Quadrant Plastic Composites, AG
    Inventors: Karl Ludwig Brentrup, Harri Dittmar
  • Publication number: 20120244323
    Abstract: 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: Application
    Filed: August 17, 2010
    Publication date: September 27, 2012
    Applicant: QUADRANT PLASTIC COMPOSITES AG
    Inventor: Harri Dittmar
  • Publication number: 20120181716
    Abstract: 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: Application
    Filed: March 30, 2012
    Publication date: July 19, 2012
    Applicant: QUADRANT PLASTIC COMPOSITES AG
    Inventors: Karl-Ludwig Brentrup, Harri Dittmar
  • Patent number: 8043542
    Abstract: 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: Grant
    Filed: February 19, 2008
    Date of Patent: October 25, 2011
    Assignee: Quadrant Plastic Composites, AG
    Inventors: Eberhard Pfeiffer, Harri Dittmar, Karl-Ludwig Brentrup
  • Publication number: 20100116407
    Abstract: 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: Application
    Filed: January 18, 2010
    Publication date: May 13, 2010
    Applicant: QUADRANT PLASTIC COMPOSITES AG
    Inventors: Karl Ludwig Brentrup, Harri Dittmar
  • Publication number: 20100032870
    Abstract: 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: Application
    Filed: February 19, 2008
    Publication date: February 11, 2010
    Applicant: QUADRANT PLASTIC COMPOSITES AG
    Inventors: Eberhard Pfeiffer, Harri Dittmar, Karl-Ludwig Brentrup
  • Patent number: 7132025
    Abstract: 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: Grant
    Filed: March 9, 2002
    Date of Patent: November 7, 2006
    Assignee: Quadrant Plastic Composites AG
    Inventor: Harri Dittmar
  • Publication number: 20060244170
    Abstract: 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: Application
    Filed: April 4, 2006
    Publication date: November 2, 2006
    Applicant: Quadrant Plastic Composites AG
    Inventors: Karl-Ludwig Brentrup, Harri Dittmar
  • Publication number: 20060013990
    Abstract: 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: Application
    Filed: June 3, 2005
    Publication date: January 19, 2006
    Inventors: Karl-Ludwig Brentrup, Harri Dittmar, Erwin Lokere, Jeroen Gallens
  • Publication number: 20040177911
    Abstract: 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: Application
    Filed: December 4, 2003
    Publication date: September 16, 2004
    Inventor: Harri Dittmar
  • Publication number: 20040112501
    Abstract: 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: Application
    Filed: October 24, 2003
    Publication date: June 17, 2004
    Inventor: Harri Dittmar
  • Patent number: 6680115
    Abstract: 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 gl
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: January 20, 2004
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Roger E. Mulder, Charles W. Peterson, Harri Dittmar
  • Publication number: 20010033923
    Abstract: 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 gl
    Type: Application
    Filed: May 31, 2001
    Publication date: October 25, 2001
    Inventors: Roger E. Mulder, Charles W. Peterson, Harri Dittmar
  • Patent number: 6268047
    Abstract: 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 sec
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: July 31, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Roger E. Mulder, Charles W. Peterson, Harri Dittmar