Patents by Inventor Stephan Riefers

Stephan Riefers 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: 11451045
    Abstract: An automotive auxiliary unit includes an electronic protection unit. The electronic protection unit includes an inverse-polarity protection unit having a semiconductor switch, and an overcurrent protection unit which detects a voltage drop at the semiconductor switch of the inverse-polarity protection unit so as to determine a present current level.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: September 20, 2022
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Witold Joschko, Stephan Riefers
  • Publication number: 20210050717
    Abstract: An automotive auxiliary unit includes an electronic protection unit. The electronic protection unit includes an inverse-polarity protection unit having a semiconductor switch, and an overcurrent protection unit which detects a voltage drop at the semiconductor switch of the inverse-polarity protection unit so as to determine a present current level.
    Type: Application
    Filed: February 5, 2018
    Publication date: February 18, 2021
    Applicant: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: WITOLD JOSCHKO, STEPHAN RIEFERS
  • Publication number: 20200291947
    Abstract: An electronic motor vehicle fluid pump includes a pump housing and a motor which is electronically commutated. The motor includes a motor rotor which is permanently magnetized, a motor stator with a stator body and a plurality of stator coils, a cylindrical metal motor can which fluidically separates the motor stator and the motor rotor, and a motor electronics unit with an electric ground terminal. The motor electronics unit is arranged at a dry side of the cylindrical metal motor can and is electrically connected to the plurality of stator coils so as to energize the plurality of stator coils to drive the motor rotor. A pump wheel is arranged to co-rotate with the motor rotor.
    Type: Application
    Filed: November 22, 2017
    Publication date: September 17, 2020
    Applicant: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: REINHARD GOOTZ, STEPHAN RIEFERS, PREDRAG STEVANOVIC, ERCAN BIRINCI, ALEXANDER FINDEISEN
  • Publication number: 20110289730
    Abstract: The invention relates to a door handle arrangement for a motor vehicle having a handle component that has a handle (1) and at least one fastener section (3, 4) connected to the handle. The fastener section can be coupled to a fastener receptacle arranged in a door of the motor vehicle. A first conducive coil, the winding of which surrounds a hub (16) arranged in the handle component, is arranged in the handle component, wherein the hub extends at least partially in the listener section (3, 4) of the handle component. In the region of the fastener receptacle on the vehicle side, a second conductive coil is designed such that the hub arranged in the handle component (16) extends through the second coil upon coupling of the fastener section to the fastener receptacle.
    Type: Application
    Filed: November 10, 2009
    Publication date: December 1, 2011
    Inventors: Bernd Gerdes, Bernd Reifenberg, Witold Joschko, Klaus-Dieter Kulik, Stephan Riefers