Patents by Inventor Holger Markmann

Holger Markmann 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).

  • Aircraft drive system
    Patent number: 11588431
    Abstract: The disclosure relates to a hybrid-electrical drive system for an aircraft having two subsystems that are largely independent of each other. A stator winding of a common electrical machine is assigned to each of the subsystems such that both subsystems may be supplied with electrical energy from the common electrical machine. If a defect occurs in one of the subsystems, the drive system may be configured such that electrical energy from a battery of the non-defective subsystem may be transferred into the defective subsystem by utilizing the two stator winding systems.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: February 21, 2023
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Christian Bachmann, Dominik Bergmann, Holger Markmann
  • AIRCRAFT DRIVE SYSTEM
    Publication number: 20210281210
    Abstract: The disclosure relates to a hybrid-electrical drive system for an aircraft having two subsystems that are largely independent of each other. A stator winding of a common electrical machine is assigned to each of the subsystems such that both subsystems may be supplied with electrical energy from the common electrical machine. If a defect occurs in one of the subsystems, the drive system may be configured such that electrical energy from a battery of the non-defective subsystem may be transferred into the defective subsystem by utilizing the two stator winding systems.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 9, 2021
    Inventors: Christian Bachmann, Dominik Bergmann, Holger Markmann