Patents by Inventor Uwe Heitmann

Uwe Heitmann 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: 8950168
    Abstract: A hybrid yarn for producing molded parts having a thermoplastic matrix and reinforcing fibers embedded therein. The hybrid yarn includes a core substantially made of staple fibers aligned in a straight line in the longitudinal direction of the hybrid yarn, and a cover made substantially of staple fibers wound helically about the core. The staple fibers forming the core and the staple fibers forming the cover each are made of an intimate mixture of thermoplastic matrix fibers and reinforcing fibers.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: February 10, 2015
    Assignee: Deutsche Institute fur Textil-und Faserforschung Denkendorf
    Inventors: Uwe Heitmann, Heinrich Planck
  • Publication number: 20130104515
    Abstract: The invention relates to a hybrid yarn (1) for producing molded parts (8) comprising a thermoplastic matrix and reinforcing fibres (4, 5, 6, 7) embedded therein, wherein the hybrid yarn (1) comprises a core (2) substantially made of staple fibres (4, 5) aligned in a straight line in the longitudinal direction (LR) of the hybrid yarn (1), and a cover (3) made substantially of staple fibres (6, 7) wound helically about the core (2), wherein the staple fibres (4, 5) forming the core (2) and the staple fibres (6, 7) forming the cover (3) each are made of an intimate mixture (4, 5; 6, 7) of thermoplastic matrix fibres (4, 6) and reinforcing fibres (5, 7).
    Type: Application
    Filed: April 27, 2011
    Publication date: May 2, 2013
    Applicant: Deutsche Institute fur Textil- und Faserforschung Denkendorf
    Inventors: Uwe Heitmann, Heinrich Planck
  • Publication number: 20120192541
    Abstract: A component for an air jet spinning arrangement, in particular a spindle point, comprises a yarn withdrawal channel having an entry opening for drawing a yarn out of a vortex chamber of the air jet spinning arrangement. The component comprises at least one air outlet opening connected to the yarn withdrawal channel for discharging air from the yarn withdrawal channel during a piecing process. The component may comprise an injector channel for feeding back a yarn end back counter to the withdrawal direction during a piecing process. The injector channel, which is connectable to a compressed air source, can be connected by means of an opening to the yarn withdrawal channel and be positioned opposite the entry opening of the yarn withdrawal channel. The air outlet opening can be connected to the yarn withdrawal channel between the entry opening of the yarn withdrawal channel and the mouth of the injector channel.
    Type: Application
    Filed: June 23, 2010
    Publication date: August 2, 2012
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Peter Artzt, Kurt Ziegler, Heinz Müller, Uwe Heitmann, Jörg Hehl
  • Patent number: 8172739
    Abstract: A device for combining groups of at least two different types of filter segments for producing multi-segment filters in the tobacco industry in a continuous process includes a plurality of independent functional units that are each designed as a module.
    Type: Grant
    Filed: August 31, 2002
    Date of Patent: May 8, 2012
    Assignee: HAUNI Maschinenbau AG
    Inventors: Sönke Horn, Thorsten Scherbarth, Stephan Wolff, Gerd Strohecker, Steffen Rocktäschel, Wolfgang Steiniger, Heinz-Christen Lorenzen, Uwe Heitmann, Nikolaos Georgitsis
  • Patent number: 8042323
    Abstract: An apparatus and associated method for spinning staple fibers on a ring spindle machine includes a ring spindle disposed downstream of a drawing frame outlet. A thread guiding device is disposed between the drawing frame outlet and the ring spindle and includes a twisting apparatus that is magnetically coupled with the ring spindle so as to rotate at the same speed as the ring spindle. The twisting apparatus has a thread braking device configured along a path of the thread through the twisting apparatus. An attachment configured at a top of the ring spindle has a plurality of circumferential grooves configured to catch the thread coming from the twisting apparatus and being wound onto the ring spindle.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: October 25, 2011
    Assignee: Deutsche Institut fur Textil-und Faserforschung Denkendorf
    Inventors: Peter Artzt, Jurgen Schneider, Uwe Heitmann
  • Publication number: 20100043380
    Abstract: The invention relates to a method for spinning staple fibres on ring-spinning machines, wherein a staple fibre composite is drawn in a drawing frame and, during exit from the drawing frame, is twisted to form a thread and is wound up by means of a traveler device. The fibre composite (F) which emerges from the drawing frame runs through a thread guide device (1) which has a twisting apparatus (10) which is equipped with a brake device (13, 13). The completely twisted thread (P) is guided over a spindle attachment (33) which is provided with grooves (32, 35), immediately after leaving the twisting apparatus (10). The method is carried out by way of an apparatus for spinning staple fibres on ring-spinning machines, which apparatus comprises a thread guide device which has a twisting element which is arranged at a spacing above the upper end of the ring spindle and is coupled to the ring spindle via a magnetic force field.
    Type: Application
    Filed: February 18, 2008
    Publication date: February 25, 2010
    Inventors: Peter Artzt, Jurgen Schneider, Uwe Heitmann
  • Patent number: 7215422
    Abstract: A spectrometer assembly (10) is disclosed. The assembly includes a light source (11) with a continuous spectrum. A pre-monochromator (2) generates a spectrum with a relatively small linear dispersion from which a spectral portion is selectable, the spectral bandwidth of the spectral portion being smaller than or equal to the bandwidth of the free spectral range of the order in the echelle spectrum. The centre wavelength of the selected spectral interval is measurable with maximum blaze efficiency. The assembly also includes an echelle spectrometer (4) with means for wavelength calibration, an entrance slit (21) at the pre-monochromator (2), an intermediate slit assembly (50) with an intermediate slit (3) and a spatially resolving light detector (5) in the exit plane of the spectrometer for the detection of wavelength spectra.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: May 8, 2007
    Assignees: Gesellschaft zur Förderung der Analytischen Wissenschaften e.V., Gesellschaft zur Förderung angewandter Optik, Optoelektronik, Quantenelektronik und Spektroskonie e. V.
    Inventors: Stefan Florek, Helmut Becker-Ross, Uwe Heitmann
  • Patent number: 7004896
    Abstract: A method and arrangement are provided for producing compound filters for products in the tobacco-processing industry. A filter tube, having a filter element in a central region of the filter tube, is supplied to a predetermined position. Predetermined portions of filtering material are then inserted into the filter tube from at least a first end of the filter tube so that filter segments form in at least a first part of the filter tube.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: February 28, 2006
    Assignee: Hauni Maschinenbau GmbH
    Inventors: Uwe Heitmann, Sönke Horn, Nikolaos Georgitsis, Heinz-Christen Lorenzen, Steffen Rocktäschel, Stephan Wolff, Wolfgang Steiniger, Gerd Strohecker, Andreas Rinke, Hans-Herbert Schmidt
  • Publication number: 20050157293
    Abstract: A spectrometer assembly (10) comprises a light source (11) with a continuous spectrum, a pre-monochromator (2) for generating a spectrum with a relatively small linear dispersion from which a spectral portion is selectable, the spectral bandwidth of such spectral portion being smaller than or equal to the bandwidth of the free spectral range of such order in the echelle spectrum wherein the centre wavelength of the selected spectral interval is measurable with maximum blaze efficiency, an echelle spectrometer (4) with means for wavelength calibration, an entrance slit (21) at the pre-monochromator (2), an intermediate slit assembly (50) with an intermediate slit (3) and a spatially resolving light detector (5) in the exit plane of the spectrometer for the detection of wavelength spectra.
    Type: Application
    Filed: January 28, 2003
    Publication date: July 21, 2005
    Inventors: Stefan Florek, Helmut Becker-Ross, Uwe Heitmann
  • Patent number: 6877515
    Abstract: Apparatus for making one or more rod-like fillers of shredded tobacco for use in the making of cigarettes or the like employs one or two pneumatic conveyors having endless foraminous belts trained over pulleys and including elongated stretches below communicating parts of a common suction chamber. A shower of intermixed tobacco shreds and smaller particles including tobacco dust and coarser particles is directed against the undersides of the elongated stretches. The shreds are attracted to and advance with the respective belts to form streams which are ready to be trimmed and thereupon draped into cigarette paper or the like. At least some smaller particles penetrate through the respective belts into the corresponding parts of the suction chamber. The contents of the suction chamber are evacuated by suction and are returned to the undersides of the elongated stretches of the belts for classification.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: April 12, 2005
    Assignee: Hauni Maschinenbau AG
    Inventors: Uwe Heitmann, Heinz-Christen Lorenzen
  • Publication number: 20040250823
    Abstract: A method and machine produces a continuous filter rod. At least one type of finite, essentially completely separated fibers is transported with transport air to a conveyor. A fiber nonwoven is formed on one surface of the conveyor to result in the fibers at least partially contacting one another. The fiber nonwoven is deposited onto a wrapping material web. The fiber nonwoven is then wrapped a material web.
    Type: Application
    Filed: April 2, 2004
    Publication date: December 16, 2004
    Applicant: HAUNI Maschinenbau AG
    Inventors: Peter-Franz Arnold, Sonke Horn, Uwe Heitmann, Thorsten Scherbarth, Alexander Buhl, Stephan Wolff
  • Publication number: 20040237269
    Abstract: A method for producing a nonwoven for the manufacture of filter rods in the tobacco industry includes separating fibers of at least one type of filter material in at least one separating device having at least one separating element rotating about a rotational axis. The separated fibers are fed to a conveyor moving in a conveying direction such that the separated fibers form the nonwoven.
    Type: Application
    Filed: April 2, 2004
    Publication date: December 2, 2004
    Applicant: HAUNI Maschinenbau AG
    Inventors: Peter-Franz Arnold, Sonke Horn, Uwe Heitmann, Irene Maurer, Jan Peisker, Thorsten Scherbarth, Alexander Buhl, Stephan Wolff
  • Publication number: 20040237972
    Abstract: A device for combining groups of at least two different types of filter segments for producing multi-segment filters in the tobacco industry in a continuous process includes a plurality of independent functional units that are each designed as a module.
    Type: Application
    Filed: March 18, 2004
    Publication date: December 2, 2004
    Inventors: Sonke Horn, Thorsten Scherbarth, Stephan Wolff, Gerd Strohecker, Steffen Rocktaschel, Wolfgang Steiniger, Heinz-Christen Lorenzen, Uwe Heitmann, Nikolaos Georgitsis
  • Patent number: 6814080
    Abstract: Apparatus for making one or more rod-like fillers of shredded tobacco for use in the making of cigarettes or the like employs one or two pneumatic conveyors having endless foraminous belts trained over pulleys and including elongated stretches below communicating parts of a common suction chamber. A shower of intermixed tobacco shreds and smaller particles including tobacco dust and coarser particles is directed against the under sides of the elongated stretches. The shreds are attracted to and advance with the respective belts to form streams which are ready to be trimmed and thereupon draped into cigarette paper or the like. At least some smaller particles penetrate through the respective belts into the corresponding parts of the suction chamber. The contents of the suction chamber are evacuated by suction and are returned to the undersides of the elongated stretches of the belts for classification.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: November 9, 2004
    Assignee: Hauni Maschinenbau AG
    Inventors: Uwe Heitmann, Heinz-Christen Lorenzen
  • Publication number: 20040060570
    Abstract: Apparatus for making one or more rod-like fillers of shredded tobacco for use in the making of cigarettes or the like employs one or two pneumatic conveyors having endless foraminous belts trained over pulleys and including elongated stretches below communicating parts of a common suction chamber. A shower of intermixed tobacco shreds and smaller particles including tobacco dust and coarser particles is directed against the under-sides of the elongated stretches. The shreds are attracted to and advance with the respective belts to form streams which are ready to be trimmed and thereupon draped into cigarette paper or the like. At least some smaller particles penetrate through the respective belts into the corresponding parts of the suction chamber. The contents of the suction chamber are evacuated by suction and are returned to the undersides of the elongated stretches of the belts for classification.
    Type: Application
    Filed: September 5, 2003
    Publication date: April 1, 2004
    Inventors: Uwe Heitmann, Heinz-Christen Lorenzen
  • Patent number: 6701933
    Abstract: A device for creating a spread-out stream of tobacco fibers includes a concave-curved guide track along which the fiber stream of tobacco fibers are conveyed. The guide track has a generatrix based on a uniform generating curve. At least one air jet has an air flow opening interrupting the guide track so that air exiting the air flow jet acts in a conveyance direction of the fiber stream for spreading out the tobacco fibers.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: March 9, 2004
    Assignee: Hauni Maschinenbau AG
    Inventor: Uwe Heitmann
  • Patent number: 6668837
    Abstract: In an arrangement for reducing noise level in a tobacco-processing production machine having an operator region and reflection surfaces facing the operator region, sound-damping material is disposed on the reflection surfaces facing the operator region.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: December 30, 2003
    Assignee: Hauni Maschinenbau AG
    Inventor: Uwe Heitmann
  • Patent number: 6651673
    Abstract: In an arrangement of a collecting receptacle integrated into a production machine in the tobacco-processing industry for collecting tobacco products sorted out from the production machine during a production process, the collecting receptacle is removable from the production machine and is comprised of two parts.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: November 25, 2003
    Assignee: Hauni Maschinenbau AG
    Inventor: Uwe Heitmann
  • Publication number: 20020162561
    Abstract: A device for creating a spread-out stream of tobacco fibers includes a concave-curved guide track along which the fiber stream of tobacco fibers are conveyed. The guide track has a generatrix based on a uniform generating curve. At least one air jet has an air flow opening interrupting the guide track so that air exiting the air flow jet acts in a conveyance direction of the fiber stream for spreading out the tobacco fibers.
    Type: Application
    Filed: January 14, 2000
    Publication date: November 7, 2002
    Inventor: Uwe Heitmann
  • Publication number: 20020119874
    Abstract: A method and arrangement are provided for producing compound filters for products in the tobacco-processing industry. A filter tube, having a filter element in a central region of the filter tube, is supplied to a predetermined position. Predetermined portions of filtering material are then inserted into the filter tube from at least a first end of the filter tube so that filter segments form in at least a first part of the filter tube.
    Type: Application
    Filed: January 29, 2002
    Publication date: August 29, 2002
    Inventors: Uwe Heitmann, Sonke Horn, Nikolaos Georgitsis, Heinz-Christen Lorenzen, Steffen Rocktaschel, Stephan Wolff, Wolfgang Steiniger, Gerd Strohecker, Andreas Rinke, Hans-Herbert Schmidt