Patents by Inventor Helge Sprenger
Helge Sprenger 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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Publication number: 20230327599Abstract: The present invention relates to controlling an electric drive system. According to the invention, the rotor temperature of an electrical machine is monitored and modulation methods and the switching frequency for controlling the drive system are adapted depending on the rotor temperature.Type: ApplicationFiled: April 30, 2021Publication date: October 12, 2023Inventors: Alexander Rosen, Helge Sprenger, Michael Bangerter, Thomas Zeltwanger
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Publication number: 20230268861Abstract: The invention relates to controlling an electric drive system, a control range for the switching frequency of a power converter in such a drive system being adaptable when the rotational frequency curve or the torque curve of the electrical machine is taken into account. In this way, psycho-acoustic irritations can be avoided.Type: ApplicationFiled: April 30, 2021Publication date: August 24, 2023Inventors: Helge Sprenger, Thomas Zeltwanger
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Patent number: 11349411Abstract: The invention relates to an adjustment of a PWM frequency in a power converter in accordance with the input voltage of the power converter. By means of the adjustment of the PWM frequency in the power converter in accordance with the input voltage, a ripple on the input side of the power converter can be varied. In particular, it is possible, in the case of high input voltages, to minimize the ripple by adjusting the PWM frequency and thus to reduce the sum of the input voltage and the ripple.Type: GrantFiled: August 9, 2018Date of Patent: May 31, 2022Assignee: Robert Bosch GmbHInventors: Florian Einsele, Helge Sprenger
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Publication number: 20200204086Abstract: The invention relates to an adjustment of a PWM frequency in a power converter in accordance with the input voltage of the power converter. By means of the adjustment of the PWM frequency in the power converter in accordance with the input voltage, a ripple on the input side of the power converter can be varied. In particular, it is possible, in the case of high input voltages, to minimize the ripple by adjusting the PWM frequency and thus to reduce the sum of the input voltage and the ripple.Type: ApplicationFiled: August 9, 2018Publication date: June 25, 2020Inventors: Florian Einsele, Helge Sprenger
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Patent number: 10611011Abstract: The disclosure relates to a hand-held power tool comprising a percussion mechanism, especially a rotary hammer and/or percussion hammer. According to the disclosure, at least one sensor unit comprising at least sensor for at least one mechanical measurement variable is provided for detecting at least one percussion parameter.Type: GrantFiled: April 3, 2013Date of Patent: April 7, 2020Assignee: Robert Bosch GmbHInventors: Rainer Nitsche, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Helge Sprenger
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Patent number: 10556333Abstract: A machine-tool device includes at least one control and/or regulation unit. The at least one control and/or regulation unit is configured to (i) at least one of control and/or regulation of a drive unit and (ii) determine at least one actual rotational speed of the drive unit from a signal of at least one sensor element taking the form of an acceleration sensor. The machine-tool device further includes at least one sensor unit which includes the at least one sensor element taking the form of the acceleration sensor.Type: GrantFiled: November 6, 2014Date of Patent: February 11, 2020Assignee: Robert Bosch GmbHInventors: Bernd Wirnitzer, Helge Sprenger, Hagen Philipp Keinath
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Patent number: 10350742Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for controlling a pneumatic percussion mechanism. According to the disclosure, the control unit comprises at least one load estimation device.Type: GrantFiled: April 24, 2013Date of Patent: July 16, 2019Assignee: Robert Bosch GmbHInventors: Rainer Nitsche, Antoine Vandamme, Thomas Winkler, Helge Sprenger, Haris Hamedovic, Wolfgang Fischer, Christian Bertsch, Mario Eduardo Vega Zavala, Ulli Hoffmann, Thilo Henke, Achim Duesselberg
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Patent number: 9969071Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for open-loop and/or closed loop control of a pneumatic percussion mechanism, and at least one operating condition sensor unit. According to the disclosure, the control unit is designed to detect at least one percussion mechanism parameter depending on measurement values of the operating condition sensor unit.Type: GrantFiled: April 24, 2013Date of Patent: May 15, 2018Assignee: Robert Bosch GmbHInventors: Rainer Nitsche, Matthias Tauber, Gerd Schlesak, Antoine Vandamme, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Thilo Henke, Juergen Lennartz, Helge Sprenger
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Patent number: 9815160Abstract: A percussion unit for a rotary hammer and/or percussion hammer includes a control unit that is configured for open-loop and/or closed loop control of a pneumatic percussion mechanism. In at least one operating state in which the control unit changes from an idle mode to a percussion mode, the control unit is configured to adjust at least one operating parameter temporarily to a starting value.Type: GrantFiled: April 24, 2013Date of Patent: November 14, 2017Assignee: Robert Bosch GmbHInventors: Rainer Nitsche, Matthias Tauber, Antoine Vandamme, Gerd Schlesak, Helge Sprenger, Carsten Diem, Wolfgang Fischer, Haris Hamedovic, Juergen Lennartz, Christian Bertsch, Mario Eduardo Vega Zavala, Achim Duesselberg
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Patent number: 9652217Abstract: The disclosure relates to an electric tool, particularly a hand-held power tool, comprising a control unit which has control software with control parameters, and is provided for the purpose of controlling a drive unit. According to the disclosure, said electric tool comprises an interface unit that is provided to fundamentally update and/or modify the control software and/or the control parameters.Type: GrantFiled: April 3, 2013Date of Patent: May 16, 2017Assignee: Robert Bosch GmbHInventors: Thomas Winkler, Ulli Hoffmann, Klaus Kuespert, Klaus Marx, Carsten Diem, Jan Breitenbach, Juergen Lennartz, Ulrich Schulmeister, Christian Bertsch, Achim Duesselberg, Helge Sprenger
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Patent number: 9486866Abstract: A power tool includes a sawing working device of an at least partially flat form and at least one actuator. The sawing working device is configured to produce a sawing cut in a working direction. The at least one actuator is configured to produce at least one oscillation in the sawing working device.Type: GrantFiled: September 30, 2014Date of Patent: November 8, 2016Assignee: Robert Bosch GmbHInventors: Thomas Winkler, Helge Sprenger, Peter Schwenkel, Richard Schoenleber, David Gaenzle
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Publication number: 20160279776Abstract: A machine-tool device includes at least one control and/or regulation unit. The at least one control and/or regulation unit is configured to (i) at least one of control and/or regulation of a drive unit and (ii) determine at least one actual rotational speed of the drive unit from a signal of at least one sensor element taking the form of an acceleration sensor. The machine-tool device further includes at least one sensor unit which includes the at least one sensor element taking the form of the acceleration sensor.Type: ApplicationFiled: November 6, 2014Publication date: September 29, 2016Inventors: Bernd Wirnitzer, Helge Sprenger, Hagen Philipp Keinath
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Publication number: 20160129578Abstract: A manual power tool operating device includes at least one control and regulating unit configured to drive a manual power tool drive unit. The manual power tool further includes at least one operating mode selection element configured to adjust a plurality of operating modes. The at least one control and regulating unit includes at least one operating program configured to be as a function of at least one signal of the operating mode selection element. The at least one operating program configured to at least one of modify and adjust at least two operating parameters characterizing at least one operating mode.Type: ApplicationFiled: June 11, 2014Publication date: May 12, 2016Inventors: Helge Sprenger, Juergen Lennartz, Christian Bertsch, Achim Duesselberg
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Publication number: 20150202758Abstract: A percussion unit, especially for a rotary hammer and/or percussion hammer, includes a control unit that is configured for open-loop and/or closed loop control of a drive unit and/or a pneumatic percussion mechanism. The percussion unit further includes a pressure sensor unit that is configured to measure a pressure curve in order to detect at least one state of the percussion mechanism.Type: ApplicationFiled: May 6, 2013Publication date: July 23, 2015Inventors: Rainer Nitsche, Christian Bertsch, Carsten Diem, Achim Duesselberg, Matthias Tauber, Helge Sprenger
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Publication number: 20150158170Abstract: The disclosure relates to a hand-held power tool comprising a percussion mechanism, especially a rotary hammer and/or percussion hammer. According to the disclosure, at least one sensor unit comprising at least sensor for at least one mechanical measurement variable is provided for detecting at least one percussion parameter.Type: ApplicationFiled: April 3, 2013Publication date: June 11, 2015Inventors: Rainer Nitsche, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Helge Sprenger
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Publication number: 20150136433Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for open-loop and/or closed loop control of a pneumatic percussion mechanism, and at least one operating condition sensor unit. According to the disclosure, the control unit is designed to detect at least one percussion mechanism parameter depending on measurement values of the operating condition sensor unit.Type: ApplicationFiled: April 24, 2013Publication date: May 21, 2015Inventors: Rainer Nitsche, Matthias Tauber, Gerd Schlesak, Antoine Vandamme, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Thilo Henke, Juergen Lennartz, Helge Sprenger
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Publication number: 20150129248Abstract: A percussion unit for a rotary hammer and/or percussion hammer includes a control unit that is configured for open-loop and/or closed loop control of a pneumatic percussion mechanism. In at least one operating state in which the control unit changes from an idle mode to a percussion mode, the control unit is configured to adjust at least one operating parameter temporarily to a starting value.Type: ApplicationFiled: April 24, 2013Publication date: May 14, 2015Inventors: Rainer Nitsche, Matthias Tauber, Antoine Vandamme, Gerd Schlesak, Helge Sprenger, Carsten Diem, Wolfgang Fischer, Haris Hamedovic, Juergen Lennartz, Christian Bertsch, Mario Eduardo Vega Zavala, Achim Duesselberg
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Publication number: 20150135306Abstract: The disclosure relates to an electric tool, particularly a hand-held power tool, comprising a control unit which has control software with control parameters, and is provided for the purpose of controlling a drive unit. According to the disclosure, said electric tool comprises an interface unit that is provided to fundamentally update and/or modify the control software and/or the control parameters.Type: ApplicationFiled: April 3, 2013Publication date: May 14, 2015Inventors: Thomas Winkler, Ulli Hoffmann, Klaus Kuespert, Klaus Marx, Carsten Diem, Jan Breitenbach, Juergen Lennartz, Ulrich Schulmeister, Christian Bertsch, Achim Duesselberg, Helge Sprenger
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Publication number: 20150101835Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for controlling a pneumatic percussion mechanism. According to the disclosure, the control unit comprises at least one load estimation device.Type: ApplicationFiled: April 24, 2013Publication date: April 16, 2015Inventors: Rainer Nitsche, Antoine Vandamme, Thomas Winkler, Helge Sprenger, Haris Hamedovic, Wolfgang Fischer, Christian Bertsch, Mario Eduardo Vega Zavala, Ulli Hoffmann, Thilo Henke, Achim Duesselberg
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Publication number: 20150090086Abstract: A power tool includes a sawing working device of an at least partially flat form and at least one actuator. The sawing working device is configured to produce a sawing cut in a working direction. The at least one actuator is configured to produce at least one oscillation in the sawing working device.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Inventors: Thomas Winkler, Helge Sprenger, Peter Schwenkel, Richard Schoenleber, David Gaenzle