Patents by Inventor Jens Krotach

Jens Krotach 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).

  • Synchronous AC motor
    Publication number: 20010011877
    Abstract: The invention relates to a mains-commutated, synchronous AC motor (1) with permanent-magnet excitation, which is configured as an external-rotor motor with a permanent-magnet external rotor (6) which rotates around an inner stator. In this case, an electronic starting apparatus (2) is provided which actuates the stator (4) in order to start the external rotor (6) in such a manner that the external rotor (6) is accelerated in a controlled manner to its synchronous rotation speed, and then continues to run in the mains-commutated synchronous mode.
    Type: Application
    Filed: February 8, 2001
    Publication date: August 9, 2001
    Inventors: Andras Lelkes, Jens Krotach