Patents by Inventor Florian Zapf

Florian Zapf 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: 12174224
    Abstract: A current measuring device for generating an output current proportional to a current to be measured includes at least two Hall sensors arranged on a circular path and oriented identically in relation to a center point. The current measuring device includes an adding circuit summing measurement signals of the Hall sensors, a subtracting circuit for eliminating an offset, a voltage-controlled current source, and a current supply with a toroidal coil having a paramagnetic and/or diamagnetic core and a DC/DC converter supplying the Hall sensors. In a method for measuring a current, a current measuring device has an adding circuit for adding the measurement signals of the Hall sensors and generating a voltage proportional to the current to be measured. An offset of the voltage is subtracted by a subtracting circuit, generating an output current with a predefined transformation ratio relative to the measured current.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: December 24, 2024
    Assignee: Siemens Aktiengesellschaft
    Inventors: Roland Weiss, Karl Fleisch, Ingolf Hoffmann, Alexander Itzke, Anja Schnieders, Abderrahim Chahid, Florian Zapf
  • Publication number: 20240272205
    Abstract: A current measuring device for generating an output current proportional to a current to be measured includes at least two Hall sensors arranged on a circular path and oriented identically in relation to a center point. The current measuring device includes an adding circuit summing measurement signals of the Hall sensors, a subtracting circuit for eliminating an offset, a voltage-controlled current source, and a current supply with a toroidal coil having a paramagnetic and/or diamagnetic core and a DC/DC converter supplying the Hall sensors. In a method for measuring a current, a current measuring device has an adding circuit for adding the measurement signals of the Hall sensors and generating a voltage proportional to the current to be measured. An offset of the voltage is subtracted by a subtracting circuit, generating an output current with a predefined transformation ratio relative to the measured current.
    Type: Application
    Filed: July 14, 2021
    Publication date: August 15, 2024
    Applicant: Siemens Aktiengesellschaft
    Inventors: ROLAND WEISS, KARL FLEISCH, INGOLF HOFFMANN, ALEXANDER ITZKE, ANJA SCHNIEDERS, ABDERRAHIM CHAHID, FLORIAN ZAPF
  • Publication number: 20230213561
    Abstract: Various embodiments of the teachings herein include an apparatus for measuring a magnetic field of a conductor of an electric current. The apparatus may include three magnetic field sensors arranged on a circumference of a non-circular ellipse. The three magnetic field sensors are arranged equidistantly along the circumference of the ellipse. The magnetic field is measured without using a flux concentrator.
    Type: Application
    Filed: May 6, 2021
    Publication date: July 6, 2023
    Applicant: Siemens Aktiengesellschaft
    Inventors: Roland Weiss, Florian Zapf, Karl Fleisch
  • Publication number: 20230213562
    Abstract: Various embodiments of the teachings herein include an apparatus for measuring a magnetic field of a conductor of an electric current. The apparatus may include three magnetic field sensors arranged on a circumference of a non-circular ellipse defined by parallel projection or orthogonal projection of a circle. Three first positions are arranged equidistantly on a circumference of the circle. The three first positions emerge from the parallel projection or the orthogonal projection onto at least three second positions on the ellipse. The three magnetic field sensors are arranged at the three second positions. The magnetic field is measured without using a flux concentrator.
    Type: Application
    Filed: May 6, 2021
    Publication date: July 6, 2023
    Applicant: Siemens Aktiengesellschaft
    Inventors: Roland Weiss, Florian Zapf, Karl Fleisch
  • Patent number: 7059456
    Abstract: Internally ventilated brake disk in the form of a circular ring disk with cooling channels in the interior of the disk which extend, respectively, from the inner circumference to the outer circumference of the circular ring disk, wherein the channel cross section and the channel course within the brake disk as well as the branching of the channels is designed such that the cooling effect by means of air flow is as efficient as possible.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: June 13, 2006
    Assignee: SGL Carbon AG
    Inventors: Peter Winklemann, Florian Zapf
  • Publication number: 20060070831
    Abstract: A carbon-ceramic brake disc which can be secured directly to the wheel axle without a metal hub plate, the brake disc being made from ceramic reinforced with carbon fibres and having the shape of a hub plate in the vicinity of the axis of rotation and the shape of an annular disc in the vicinity of the outer periphery
    Type: Application
    Filed: September 28, 2005
    Publication date: April 6, 2006
    Applicant: SGL CARBON AG
    Inventors: Harald Reulein, Peter Winkelmann, Florian Zapf
  • Publication number: 20050051393
    Abstract: Internally ventilated brake disk in the form of a circular ring disk with cooling channels in the interior of the disk which extend, respectively, from the inner circumference to the outer circumference of the circular ring disk, wherein the channel cross section and the channel course within the brake disk as well as the branching of the channels is designed such that the cooling effect by means of air flow is as efficient as possible
    Type: Application
    Filed: September 2, 2004
    Publication date: March 10, 2005
    Applicant: SGL Carbon AG
    Inventors: Peter Winkelmann, Florian Zapf