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).

  • Patent number: 10514421
    Abstract: 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: Grant
    Filed: October 28, 2016
    Date of Patent: December 24, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Kurt Reutlinger, Michael Wohlfarth, Miriam Riederer, Paul Mehringer, Manuel Mueller, Sebastian Paulus
  • Patent number: 10411625
    Abstract: 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: Grant
    Filed: October 28, 2016
    Date of Patent: September 10, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Fabio Magini, Manuel Mueller, Michael Wohlfarth, Miriam Riederer
  • Patent number: 10221324
    Abstract: 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: Grant
    Filed: January 20, 2016
    Date of Patent: March 5, 2019
    Assignee: BASF Coatings GmbH
    Inventors: Bernhard Steinmetz, Peggy Jankowski, Nadia Luhmann, Michael Matura, Michael Wohlfarth
  • Publication number: 20180356467
    Abstract: 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: Application
    Filed: October 28, 2016
    Publication date: December 13, 2018
    Inventors: Kurt REUTLINGER, Michael WOHLFARTH, Miriam RIEDERER, Paul MEHRINGER, Manuel MUELLER, Sebastian PAULUS
  • Publication number: 20180331642
    Abstract: 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: Application
    Filed: October 28, 2016
    Publication date: November 15, 2018
    Inventors: Fabio Magini, Manuel Mueller, Michael Wohlfarth, Miriam Riederer
  • Publication number: 20180022944
    Abstract: 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: Application
    Filed: January 20, 2016
    Publication date: January 25, 2018
    Applicant: BASF Coatings GmbH
    Inventors: Bernhard STEINMETZ, Peggy JANKOWSKI, Nadia LUHMANN, Michael MATURA, Michael WOHLFARTH
  • Patent number: 9315092
    Abstract: 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: Grant
    Filed: July 28, 2015
    Date of Patent: April 19, 2016
    Assignee: Magna Car Top Systems GmbH
    Inventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
  • Publication number: 20150330439
    Abstract: 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: Application
    Filed: July 28, 2015
    Publication date: November 19, 2015
    Inventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
  • Patent number: 9154047
    Abstract: 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: Grant
    Filed: June 9, 2010
    Date of Patent: October 6, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Michael Wohlfarth, Alfred Goerlach
  • Patent number: 9120368
    Abstract: 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: Grant
    Filed: June 28, 2010
    Date of Patent: September 1, 2015
    Assignee: Magna Car Top Systems GmbH
    Inventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
  • Publication number: 20120188810
    Abstract: 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: Application
    Filed: June 9, 2010
    Publication date: July 26, 2012
    Inventors: Michael Wohlfarth, Alfred Goerlach
  • Publication number: 20110002730
    Abstract: 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: Application
    Filed: June 28, 2010
    Publication date: January 6, 2011
    Applicant: MAGNA CAR TOP SYSTEMS GMBH
    Inventors: Frank Zehnder, Markus Sczuka, Michael Wohlfarth
  • Patent number: 6026503
    Abstract: 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: Grant
    Filed: August 12, 1997
    Date of Patent: February 15, 2000
    Assignee: Telrad Communication and Electronic Industries Ltd.
    Inventors: Simcha Gutgold, Menachem Honig, Vitaly Rubinovich, Ron Treves, Matias Veisman, Michael Wohlfarth