Patents by Inventor Michael Wohlfarth
Michael Wohlfarth 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: 10514421Abstract: The invention relates to a method for detecting an error in a generator unit which has an electric machine (100) with a rotor winding (110), a stator winding (120) transformer-coupled to the rotor winding (110), and a rectifier (130) connected to said stator winding, via which the electric machine (100) is connected to an onboard power supply (150) of a motor vehicle, wherein a decision is made, depending on a magnitude of a correlation (K1, K2) between a curve of an excitation current (IE) flowing through the rotor winding (110) of the electric machine (100) and a curve of a voltage drop (UY, UDF) on one side of the transformer, as to whether the error is present or not.Type: GrantFiled: October 28, 2016Date of Patent: December 24, 2019Assignee: Robert Bosch GmbHInventors: Kurt Reutlinger, Michael Wohlfarth, Miriam Riederer, Paul Mehringer, Manuel Mueller, Sebastian Paulus
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Patent number: 10411625Abstract: A method for determining a speed (nG) of a generator unit which has an electric machine (100) with a rotor winding (110) and a stator winding (120) and a rectifier (130) connected thereto, via which rectifier the electric machine (100) is connected to an electrical system (150) of a motor vehicle, the speed (nG) being determined depending on the plot of an excitation current (IE) flowing through the rotor winding (110) of the electric machine (100). In particular, the speed is determined from a known relationship between the speed, the frequency of the excitation current, the number of pole pairs and optionally the number of phases when there is an error that leads to a constant phase voltage being output.Type: GrantFiled: October 28, 2016Date of Patent: September 10, 2019Assignee: Robert Bosch GmbHInventors: Fabio Magini, Manuel Mueller, Michael Wohlfarth, Miriam Riederer
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Patent number: 10221324Abstract: The invention relates to the use of phosphoric acid and/or of monoesters and/or diesters of phosphoric acid in aqueous basecoat materials for improving adhesion of these coating materials to overbaked clearcoat materials which comprise boron compounds.Type: GrantFiled: January 20, 2016Date of Patent: March 5, 2019Assignee: BASF Coatings GmbHInventors: Bernhard Steinmetz, Peggy Jankowski, Nadia Luhmann, Michael Matura, Michael Wohlfarth
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Publication number: 20180356467Abstract: The invention relates to a method for detecting an error in a generator unit which has an electric machine (100) with a rotor winding (110), a stator winding (120) transformer-coupled to the rotor winding (110), and a rectifier (130) connected to said stator winding, via which the electric machine (100) is connected to an onboard power supply (150) of a motor vehicle, wherein a decision is made, depending on a magnitude of a correlation (K1, K2) between a curve of an excitation current (IE) flowing through the rotor winding (110) of the electric machine (100) and a curve of a voltage drop (UY, UDF) on one side of the transformer, as to whether the error is present or not.Type: ApplicationFiled: October 28, 2016Publication date: December 13, 2018Inventors: Kurt REUTLINGER, Michael WOHLFARTH, Miriam RIEDERER, Paul MEHRINGER, Manuel MUELLER, Sebastian PAULUS
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Publication number: 20180331642Abstract: A method for determining a speed (nG) of a generator unit which has an electric machine (100) with a rotor winding (110) and a stator winding (120) and a rectifier (130) connected thereto, via which rectifier the electric machine (100) is connected to an electrical system (150) of a motor vehicle, the speed (nG) being determined depending on the plot of an excitation current (IE) flowing through the rotor winding (110) of the electric machine (100). In particular, the speed is determined from a known relationship between the speed, the frequency of the excitation current, the number of pole pairs and optionally the number of phases when there is an error that leads to a constant phase voltage being output.Type: ApplicationFiled: October 28, 2016Publication date: November 15, 2018Inventors: Fabio Magini, Manuel Mueller, Michael Wohlfarth, Miriam Riederer
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Publication number: 20180022944Abstract: The invention relates to the use of phosphoric acid and/or of monoesters and/or diesters of phosphoric acid in aqueous basecoat materials for improving adhesion of these coating materials to overbaked clearcoat materials which comprise boron compounds.Type: ApplicationFiled: January 20, 2016Publication date: January 25, 2018Applicant: BASF Coatings GmbHInventors: Bernhard STEINMETZ, Peggy JANKOWSKI, Nadia LUHMANN, Michael MATURA, Michael WOHLFARTH
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Patent number: 9315092Abstract: An articulated device includes a rivet assembly for connecting first and second linkage assembly support arms together at common ends thereof. The rivet assembly includes a blind rivet having a rivet sleeve and a mandrel shaft with a mandrel head. The rivet sleeve and the mandrel shaft extend through first and second bearing holes in the common ends with the mandrel head being on the first arm adjacent to the first bearing hole. The rivet sleeve has a rivet sleeve head on the second arm adjacent to the second bearing hole. The rivet assembly includes a bearing sleeve extending between the rivet sleeve and the bearing holes. The bearing sleeve has a collar-type stop and a shoulder-type shaft stop with the collar-type stop lying against the first arm and the shoulder-type shaft stop lying against the mandrel head. The bearing sleeve has a ring-shaped stop adjacent the rivet sleeve head.Type: GrantFiled: July 28, 2015Date of Patent: April 19, 2016Assignee: Magna Car Top Systems GmbHInventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
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Publication number: 20150330439Abstract: An articulated device includes a rivet assembly for connecting first and second linkage assembly support arms together at common ends thereof. The rivet assembly includes a blind rivet having a rivet sleeve and a mandrel shaft with a mandrel head. The rivet sleeve and the mandrel shaft extend through first and second bearing holes in the common ends with the mandrel head being on the first arm adjacent to the first bearing hole. The rivet sleeve has a rivet sleeve head on the second arm adjacent to the second bearing hole. The rivet assembly includes a bearing sleeve extending between the rivet sleeve and the bearing holes. The bearing sleeve has a collar-type stop and a shoulder-type shaft stop with the collar-type stop lying against the first arm and the shoulder-type shaft stop lying against the mandrel head. The bearing sleeve has a ring-shaped stop adjacent the rivet sleeve head.Type: ApplicationFiled: July 28, 2015Publication date: November 19, 2015Inventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
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Patent number: 9154047Abstract: A rectifier system, e.g., for a generator, includes a bridge system having a predefined number of rectifier elements, at least one rectifier element being a rectifier element having at least one reverse-voltage dependent characteristic curve in a predefined range, and one of the negative diodes having a higher reverse saturation current than the associated positive diode, and at least one of the negative diodes being placed at a location in the rectifier in which the temperature is increased.Type: GrantFiled: June 9, 2010Date of Patent: October 6, 2015Assignee: ROBERT BOSCH GMBHInventors: Michael Wohlfarth, Alfred Goerlach
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Patent number: 9120368Abstract: An articulated device includes a rivet assembly for connecting first and second linkage assembly support arms together at common ends thereof such that the arms are movable relative to one another. The rivet assembly includes a rivet having first and second rivet heads and a rivet shaft. The rivet shaft extends through first and second bearing holes in the common ends of the arms with the first rivet head being on the first arm and the second rivet head being on the second arm. The rivet assembly has a bearing sleeve extending between the rivet shaft and the bearing holes. The bearing sleeve has a collar-type stop and a shoulder-type stop adjacent the first rivet head with the collar-type stop lying against the first arm and the shoulder-type stop lying against the first rivet head. The bearing sleeve has a ring-shaped stop lying against the second rivet head.Type: GrantFiled: June 28, 2010Date of Patent: September 1, 2015Assignee: Magna Car Top Systems GmbHInventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
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Publication number: 20120188810Abstract: A rectifier system, e.g., for a generator, includes a bridge system having a predefined number of rectifier elements, at least one rectifier element being a rectifier element having at least one reverse-voltage dependent characteristic curve in a predefined range, and one of the negative diodes having a higher reverse saturation current than the associated positive diode, and at least one of the negative diodes being placed at a location in the rectifier in which the temperature is increased.Type: ApplicationFiled: June 9, 2010Publication date: July 26, 2012Inventors: Michael Wohlfarth, Alfred Goerlach
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Publication number: 20110002730Abstract: An articulated device includes a rivet assembly for connecting first and second linkage assembly support arms together at common ends thereof such that the arms are movable relative to one another. The rivet assembly includes a rivet having first and second rivet heads and a rivet shaft. The rivet shaft extends through first and second bearing holes in the common ends of the arms with the first rivet head being on the first arm and the second rivet head being on the second arm. The rivet assembly has a bearing sleeve extending between the rivet shaft and the bearing holes. The bearing sleeve has a collar-type stop and a shoulder-type stop adjacent the first rivet head with the collar-type stop lying against the first arm and the shoulder-type stop lying against the first rivet head. The bearing sleeve has a ring-shaped stop lying against the second rivet head.Type: ApplicationFiled: June 28, 2010Publication date: January 6, 2011Applicant: MAGNA CAR TOP SYSTEMS GMBHInventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
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Patent number: 6026503Abstract: A device and method for interactively debugging a system controlled by a microprocessor. The device continuously monitors the signals passed along the system bus, watching for signals that match interactively defined break conditions and trace conditions. When a breakpoint condition is satisfied, the device causes the system's microprocessor to execute debug code, which either may mediate interactive control of the system by the user or may initiate the execution of a software patch. When a trace condition is satisfied, the device initiates tracing of bus activity. The device is controlled by the user using conventional interactive interface means such as a video terminal or a personal computer.Type: GrantFiled: August 12, 1997Date of Patent: February 15, 2000Assignee: Telrad Communication and Electronic Industries Ltd.Inventors: Simcha Gutgold, Menachem Honig, Vitaly Rubinovich, Ron Treves, Matias Veisman, Michael Wohlfarth