Patents by Inventor Marc Saemann

Marc Saemann 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: 11651911
    Abstract: A method operates an electrical treatment device having a user-operable operating switch, and a motor electronics system with a motor control and an electric drive motor. The switch electrically connects to a drive voltage source and the motor electronics system. The motor electronics system electrically connects to the drive motor on an output side via the motor control. The method monitors whether an input voltage at the motor electronics system meets a closed criterion or an open criterion, wherein the closed criterion is characteristic of a closed switching state of the operating switch, and wherein the open criterion is characteristic of an open switching state of the operating switch, and when the open criterion is met, operates the motor control in a state from an open state set that includes a voltage control state for limiting an increase in the input voltage caused by the running-down electric drive motor.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: May 16, 2023
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Tobias Schmidt, Kay-Steffen Gurr, Marc Saemann, Rudolf Saemann
  • Publication number: 20210074489
    Abstract: A method operates an electrical treatment device having a user-operable operating switch, and a motor electronics system with a motor control and an electric drive motor. The operating switch is electrically connected to a drive voltage source on the input side and to the motor electronics system on the output side. The motor electronics system is electrically connected to the electric drive motor on the output side by way of the motor control.
    Type: Application
    Filed: September 8, 2020
    Publication date: March 11, 2021
    Inventors: Tobias Schmidt, Kay-Steffen Gurr, Marc Saemann, Rudolf Saemann
  • Patent number: 10845435
    Abstract: A device registers an On state of a drive motor of a tool. A changing magnetic flux is produced in the On state of the drive motor. First and second peak hold detectors generate upper and lower peak signals from induced voltage output signals. An evaluation device is configured to form a difference from the generated upper peak signal and the generated lower peak signal, and compare the formed difference with an adjustable threshold value in order to determine the On state of the drive motor when the threshold value is reached or exceeded.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: November 24, 2020
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Kay-Steffen Gurr, Andre Vaas, Rudolf Saemann, Marc Saemann
  • Publication number: 20190339338
    Abstract: A device registers an On state of a drive motor of a tool. A changing magnetic flux is produced in the On state of the drive motor. First and second peak hold detectors generate upper and lower peak signals from induced voltage output signals. An evaluation device is configured to form a difference from the generated upper peak signal and the generated lower peak signal, and compare the formed difference with an adjustable threshold value in order to determine the On state of the drive motor when the threshold value is reached or exceeded.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 7, 2019
    Inventors: Kay-Steffen Gurr, Andre Vaas, Rudolf Saemann, Marc Saemann