Patents by Inventor Klaus Lehmann
Klaus Lehmann 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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Patent number: 9739502Abstract: What is described is a method for manufacturing an electrical heating device, wherein electrical heating resistors are disposed in tubes of an extruded profile, and openings are cut into a plate of the extruded profile connecting the tubes. According to this disclosure, fastening sections of the extruded profile are plastically deformed and, by means thereof, heat sinks are fastened on the extruded profile. A corresponding electrical heating device is also described.Type: GrantFiled: October 24, 2014Date of Patent: August 22, 2017Assignee: BorgWarner Ludwigsburg GmbHInventors: Michael Luppold, Alexander Dauth, Klaus Lehmann, Bernd Halbrock
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Patent number: 9486871Abstract: This disclosure relates to a method for producing a heating rod for a vehicle heating apparatus, said method comprising the following steps: arranging at least one PTC element and at least one contact element in a tube, which is formed from sheet metal and is open along a longitudinal side; welding portions of the sheet metal that bear against one another by means of a weld seam running in the longitudinal direction of the tube. This disclosure also relates to such a heating rod.Type: GrantFiled: August 27, 2013Date of Patent: November 8, 2016Assignee: BorgWarner Ludwigsburg GmbHInventors: Thomas Giffels, Ralph Waechter, Michael Luppold, Alexander Dauth, Klaus Lehmann
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Patent number: 9435562Abstract: The invention relates to a electric heating device for heating fluids, comprising at least one heating resistor, a screw, which defines a helical flow channel, and a tube housing, which surrounds the screw. In accordance with this disclosure, the screw has a core in which the at least one heating resistor is arranged.Type: GrantFiled: August 8, 2013Date of Patent: September 6, 2016Assignee: BorgWarner Ludwigsburg GmbHInventors: Thomas Giffels, Helmut Mueller, Ralph Waechter, Michael Stoerzinger, Bernd Halbrock, Alexander Dauth, Klaus Lehmann
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Patent number: 9265093Abstract: The invention relates to a heating rod comprising a tube housing, at least one ceramic heating element, which is arranged in the tube housing, a first contact plate, which in the tube housing bears against the heating element or the heating elements, and an insulating frame, which surrounds the longitudinal edges of the first contact plate. In accordance with this disclosure, a second contact plate is provided, which carries a second insulating frame, wherein the at least one heating element is arranged between the two contact plates and the two frames are plugged into one another.Type: GrantFiled: July 25, 2013Date of Patent: February 16, 2016Assignee: BorgWarner Ludwigsburg GmbHInventors: Ralph Waechter, Michael Stoerzinger, Bernd Halbrock, Alexander Daun, Norbert Ernst, Klaus Lehmann
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Publication number: 20150117848Abstract: What is described is a method for manufacturing an electrical heating device, wherein electrical heating resistors are disposed in tubes of an extruded profile, and openings are cut into a plate of the extruded profile connecting the tubes. According to this disclosure, fastening sections of the extruded profile are plastically deformed and, by means thereof, heat sinks are fastened on the extruded profile. A corresponding electrical heating device is also described.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Inventors: Michael Luppold, Alexander Dauth, Klaus Lehmann, Bernd Halbrock
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Publication number: 20140178054Abstract: The invention relates to electric vehicle heater comprising at least one tube, in which at least one heating element is arranged, and at least one heat transfer panel, which is fastened to the tube and has a plurality of flow openings for an airflow to be heated. According to the invention, the heat transfer panel is a component that sits in a groove in the tube, said groove running in the longitudinal direction of the tube. The invention also relates to a method for producing a vehicle heater, wherein at least one heating element is arranged in a tube and at least one heat transfer panel is inserted into a groove on an outer side of the tube.Type: ApplicationFiled: December 18, 2013Publication date: June 26, 2014Inventors: Michael Luppold, Alexander Dauth, Klaus Lehmann
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Patent number: 8731386Abstract: The invention relates to an electric heating device for heating fluids, comprising at least one heating rod, which has at least one heating element, a housing, which encloses the heating rod and has an inlet opening and an outlet opening, wherein the inlet opening and the outlet opening are interconnected by a winding flow channel. According to the invention, the flow channel forms a helix that has a longitudinal axis, wherein the heating rod is disposed next to the longitudinal axis of the helix and extends through a helically winding wall of the flow channel at a plurality of points.Type: GrantFiled: September 27, 2012Date of Patent: May 20, 2014Assignee: BorgWarner BERU Systems GmbHInventors: Ralph Waechter, Michael Stoerzinger, Bernd Halbrock, Alexander Dauth, Klaus Lehmann
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Patent number: 8704139Abstract: The invention relates to a heating device comprising at least one tube housing in which at least one PTC heating element is arranged, and heat exchangers which are secured on the tube housing. According to the invention, it is provided that the heat exchangers are secured on the tube housing by stamping.Type: GrantFiled: April 13, 2012Date of Patent: April 22, 2014Assignee: BorgWarner BERU Systems GmbHInventors: Michael Edgar Luppold, Alexander Dauth, Juergen Kochems, Klaus Lehmann, Joerg Weigold, Hans-Peter Etzkorn
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Publication number: 20140086566Abstract: The invention relates to an electric heating device for heating fluids, comprising at least one heating rod, which has at least one heating element, a housing, which encloses the heating rod and has an inlet opening and an outlet opening, wherein the inlet opening and the outlet opening are interconnected by a winding flow channel. According to the invention, the flow channel forms a helix that has a longitudinal axis, wherein the heating rod is disposed next to the longitudinal axis of the helix and extends through a helically winding wall of the flow channel at a plurality of points.Type: ApplicationFiled: September 27, 2012Publication date: March 27, 2014Inventors: Ralph Waechter, Michael Stoerzinger, Bernd Halbrock, Alexander Dauth, Klaus Lehmann
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Publication number: 20140061174Abstract: This disclosure relates to a method for producing a heating rod for a vehicle heating apparatus, said method comprising the following steps: arranging at least one PTC element and at least one contact element in a tube, which is formed from sheet metal and is open along a longitudinal side; welding portions of the sheet metal that bear against one another by means of a weld seam running in the longitudinal direction of the tube. This disclosure also relates to such a heating rod.Type: ApplicationFiled: August 27, 2013Publication date: March 6, 2014Inventors: Thomas Giffels, Ralph Waechter, Michael Luppold, Alexander Dauth, Klaus Lehmann
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Publication number: 20140050466Abstract: The invention relates to a electric heating device for heating fluids, comprising at least one heating resistor, a screw, which defines a helical flow channel, and a tube housing, which surrounds the screw. In accordance with this disclosure, the screw has a core in which the at least one heating resistor is arranged.Type: ApplicationFiled: August 8, 2013Publication date: February 20, 2014Inventors: Thomas Giffels, Helmut Mueller, Ralph Waechter, Michael Stoerzinger, Bernd Halbrock, Alexander Dauth, Klaus Lehmann
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Publication number: 20140034634Abstract: The invention relates to a heating rod comprising a tube housing, at least one ceramic heating element, which is arranged in the tube housing, a first contact plate, which in the tube housing bears against the heating element or the heating elements, and an insulating frame, which surrounds the longitudinal edges of the first contact plate. In accordance with this disclosure, a second contact plate is provided, which carries a second insulating frame, wherein the at least one heating element is arranged between the two contact plates and the two frames are plugged into one another.Type: ApplicationFiled: July 25, 2013Publication date: February 6, 2014Inventors: Ralph Waechter, Michael Stoerzinger, Bernd Halbrock, Alexander Daun, Norbert Ernst, Klaus Lehmann
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Patent number: 8314364Abstract: The invention relates to a method for operating an electric add-heater in a motor vehicle having at least one rechargeable electrochemical cell as a power source and an electric generator which is connected with the cell and is driven by a drive engine of the motor vehicle and by which an electric add-heater can be supplied with current when the drive engine is running. It is provided according to the invention that in case of need the add-heater can be supplied with current even when no current is supplied by the generator, by switching over the add-heater to at least one electrochemical cell as a power source, monitoring the charging condition of at least one electrochemical cell, and interrupting the power supply of the electric add-heater realized by the at least one monitored electrochemical cell again when the charging condition of the at least one monitored electrochemical cell has dropped below a lower limit value.Type: GrantFiled: October 12, 2007Date of Patent: November 20, 2012Assignee: BERU AktiengesellschaftInventors: Jürgen Brust, Rolf Merte, Klaus Lehmann, Andreas Mulczet
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Publication number: 20120261403Abstract: The invention relates to a heating device comprising at least one tube housing in which at least one PTC heating element is arranged, and heat exchangers which are secured on the tube housing. According to the invention, it is provided that the heat exchangers are secured on the tube housing by stamping.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Inventors: Michael Edgar Luppold, Alexander Dauth, Juergen Kochems, Klaus Lehmann, Joerg Weigold, Hans-Peter Etzkorn
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Publication number: 20110069943Abstract: The invention relates to an apparatus for heating fluids, comprising a housing in which a duct runs, through which the fluid to be heated can flow and which leads from a housing opening for fluid to enter to a housing opening for fluid to exit. According to the invention, the duct extends in several convolutions along a housing wall carrying at least one heater housing, in which at least one electric heating element is arranged.Type: ApplicationFiled: August 19, 2010Publication date: March 24, 2011Inventors: Michael LUPPOLD, Martin Meeh, Alexander Dauth, Joerg Weigold, Hans-Peter Etzkorn, Juergen Kochems, Klaus Lehmann
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Publication number: 20040247687Abstract: The invention relates to a method for the production of active ingredient-containing pellets by the steps of a) suspending or dissolving a pharmaceutical active ingredient in a dispersion, which contains a cationic copolymer, b) dropping said dispersion, containing the pharmaceutical active ingredient and the copolymer in an aqueous polymer solution, which contains an anionic copolymer, incompatible with the cationic copolymer, so that active ingredient-containing pellets precipitate and c) separating said active ingredient-containing pellets from the aqueous polymer solution and then drying said pellets. The invention also relates to said pellets and the use thereof in diagnostics or cosmetics, as well as pharmaceutical forms which contain said pellets.Type: ApplicationFiled: March 23, 2004Publication date: December 9, 2004Applicant: ROEHM GMBH & CO. KGInventors: Hans-Ulrich Petereit, Guenter Bergmann, Klaus Lehmann
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Publication number: 20030133950Abstract: The invention discloses methods for inducing a desired T helper lymphocyte regulated immune response by delivering an immunogen to a preselected region of the gastrointestinal tract of a subject. The invention finds application in the immunological and biomedical fields.Type: ApplicationFiled: August 2, 2002Publication date: July 17, 2003Applicant: ROEHM GmbH & Co., KGInventors: Jacob Gabriel Michael, Hans-Ulrich Petereit, Klaus Lehmann
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Patent number: 6442211Abstract: The system achieves high bandwidth efficiency and a low bit and message error probability in digital data transmission. The system, with its associated methods and devices, obviates carrier synchronization or clock synchronization. Digital multicarrier transmission with coding and decoding is carried out on the basis of block synchronization, wherein, for carrier modulation, the modulation of the subcarriers is carried out differentially in coded form in the direction of the subcarriers, that is to say in the frequency domain.Type: GrantFiled: March 22, 1999Date of Patent: August 27, 2002Assignee: IAD Gesellschaft für Informatik, Automatisierung und Datenverarbeitung mbHInventors: Herrmann Hampel, Johannes Huber, Klaus Lehmann, Thomas Wagner
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Patent number: 6420473Abstract: A non-toxic, edible, enteric film coating, dry powder composition for use in making an aqueous enteric suspension which may be used in coating pharmaceutical tablets comprises a) an acrylic resin, said resin comprising i) from 20 to 85 percent by weight of at least one alkyl acrylate or alkyl methacrylate moiety, ii) from 80 to 15 percent by weight of at least one vinyl or vinylidene moiety having a carboxylic acid group capable of salt formation, and iii) from 0 to 30 percent by weight of at least one other vinyl or vinylidene moiety copolymerizable with i) and ii), b) an alkalizing agent capable of reacting with the acrylic resin such that, after reaction, 0.1 to 10 mole percent of the acidic groups in 1a-ii) are present in the salt form, and c) a detackifier.Type: GrantFiled: February 10, 2000Date of Patent: July 16, 2002Assignee: BPSI Holdings, Inc.Inventors: Ramireddy Chittamuru, George Reyes, Thomas P. Farrell, Charles F. Vesey, Dev K. Mehra, Hans-Ulrich Petereit, Klaus Lehmann
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Patent number: 6306428Abstract: A time-release laminar pharmaceutical composition, comprised of rolled or folded layers of a polymer film, that contain a pharmaceutically active substance, in which the outer surface area of the polymer film which contains the active substance, and which is accessible to the digestive juices, amounts to at most 25% of the entire surface area in the rolled or folded state, and the rolled or folded layers adhere to one another in such a way that the laminar form of medication maintains its rolled or folded form for a period of at least one hour in the release test according to USP 23, Method A, apparatus 2, at 37° C. and 50 rpm, in artificial gastric juice, and at least 30% of the active substance contained in it is released in the rolled or folded state.Type: GrantFiled: April 13, 1998Date of Patent: October 23, 2001Assignee: Roehm GmbH Chemische FabrikInventors: Klaus Lehmann, Hans-Ulrich Petereit