Patents by Inventor Engelbert Löcher

Engelbert Löcher 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).

  • Patent number: 7892622
    Abstract: The object of the invention is to provide a method which is as simple and economical as possible for manufacturing a tufted product, in particular a tufted top layer of a carpet, having improved nep adhesion properties. For this purpose splittable fibers are used which split on or in the region of the puncture site during tufting.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: February 22, 2011
    Assignee: Carl Freudenberg KG
    Inventors: Engelbert Löcher, Norbert Goffing, Ararad Emirze
  • Patent number: 7504062
    Abstract: A method and apparatus for the production of a spunbonded nonwoven fabric, by spinning a linear filament sheet of filaments arranged parallel next to one another, in the form of a curtain, from a plurality of spinning capillaries, with aerodynamic take-off and stretching of the filament sheet, where the filament sheet (8) that exits from the stretching channel (12) or is drawn off a spool is moved laterally, crosswise, by an air stream, the direction of which changes periodically, where the air stream is alternately directed at a slant to the filament sheet (8), seen in the horizontal plane.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: March 17, 2009
    Assignee: Carl Freudenberg KG
    Inventors: Engelbert Löcher, Michael Heβ
  • Patent number: 7437807
    Abstract: A tufted backing and a method of manufacturing a tufted backing from thermoplastic polymer fibers or filaments that are processed to yield a spunbonded nonwoven are described, the spunbonded nonwoven containing only fibers or filaments having a titer of 1 to 15 dtex, the mass per unit area of the tufted backing being 70 to 110 g/m2, its density being 0.18 to 0.28 g/cm3 and the 5% modulus value in the machine direction being >60 N/5 cm, but at least 0.6 Nm2/g.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: October 21, 2008
    Assignee: Firma Carl Freusenberg KG
    Inventors: Rudolf Gärtner, Peter Sander, Detlef Barbier, Ulrike Maaβ, Engelbert Löcher, Ararad Emirze, Klaus Klein, Christine König
  • Patent number: 7191813
    Abstract: A method for producing a spunbonded nonwoven fabric by extruding a linear sheet of filaments arranged parallelly side by side in the form of a curtain from a plurality of spinning capillaries, involving aerodynamical pulling off and drawing of the filament sheet, the filament sheet (8) which emerges from the drawing duct (12) or which is pulled off a spool being moved laterally crosswise by an air flow having periodically changing directions, the air flow being oriented alternately at an angle toward the filament sheet (8) as viewed in the horizontal plane.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: March 20, 2007
    Assignee: Firma Carl Freudenberg
    Inventors: Engelbert Löcher, Michael Hess
  • Patent number: 6887331
    Abstract: A method for producing a spunbonded nonwoven fabric by extruding a linear sheet of filaments arranged parallelly side by side in the form of a curtain from a plurality of spinning capillaries, involving aerodynamical pulling off and drawing of the filament sheet, the filament sheet (8) which emerges from the drawing duct (12) or which is pulled off a spool being moved laterally crosswise by an air flow having periodically changing directions, the air flow being oriented alternately at an angle toward the filament sheet (8) as viewed in the horizontal plane.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 3, 2005
    Assignee: Firma Carl Freudenberg
    Inventors: Engelbert Löcher, Michael Hess
  • Patent number: 6830809
    Abstract: A splittable yarns, fiber or filaments and a method and device for their production. The yarns, fiber or filaments includes at least two elementary filaments of a first polymer A and each second elementary filament is sheathed with a second polymer B.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 14, 2004
    Assignee: Carl Freudenberg KG
    Inventors: Engelbert Loecher, Helmut Leiner, Robert Groten, Georges Riboulet
  • Publication number: 20040104116
    Abstract: The invention relates to yarns, fibres or filaments that can be fibrillated and to a method and device for their production. According to the invention, said yarns, fibres or filaments consist of at least two elementary filaments of a polymer A and each second elementary filament is sheathed with the polymer B.
    Type: Application
    Filed: September 25, 2003
    Publication date: June 3, 2004
    Inventors: Engelbert Loecher, Helmut Leiner, Robert Groten, Georges Riboulet
  • Patent number: 6403505
    Abstract: A composite material, including a laminate (1) made of a film (5) bonded to a nonwoven (7), wherein the nonwoven (7) and the film (5) are only bonded together at discrete points and the laminate (1) is stretched in at least one direction after being formed.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: June 11, 2002
    Assignee: Firma Carl Freudenberg
    Inventors: Dieter Groitzsch, Engelbert Löcher, Bernhard Klein
  • Patent number: 6274521
    Abstract: A spun nonwoven fabric contains monofilaments and bicomponent filaments, the spun nonwoven fabric having, over its cross section, different quantities of the bicomponent filaments. The bicomponent filaments contain at least two outward-facing segments made of a binding component. The proportions of bicomponent filaments over the cross sectional planes of the spun nonwoven fabric can be in a range of approximately 1% to 100% by weight. The cross sectional planes of the nonwoven fabric containing the different proportions of bicomponent filaments transition into one another without detectable phase boundaries. The apparatus for manufacturing the nonwoven fabric contains at least one, and may contain up to forty or more, spinneret devices, such as rectangular spinneret plates or round spinneret disks. The spinneret devices may be arranged in rows or in staggered arrangement above a linearly moving collector belt.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: August 14, 2001
    Assignee: Firma Carl Freudenberg
    Inventors: Detlef Barbier, Engelbert Löcher, Ararad Emirze, Norbert Goffing
  • Patent number: 4842915
    Abstract: A spunbonded fabric is described that is made of polyester matrix filaments and a binding component consisting of thermoplastically softenable fibers, filaments or the like, and that is suitable for use as a tufting base. The melting point of the polyester matrix filaments is by at least 90.degree. C. above that of the binding component. In the tufted condition, before the coating of the back, the maximum tensile stretching value of the carpet material is more than 50%.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: June 27, 1989
    Inventors: Ludwig Hartmann, Engelbert Loecher, Ivo Ruzek, Norbert Weber