Patents by Inventor Kurt Plackner

Kurt Plackner 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).

  • Rotating-field machine with bell-shaped rotor hub and rotatable stator and control element
    Patent number: 4645963
    Abstract: The rotor of a rotating-field machine is mounted to the rotor shaft via a cup-shaped hub which is attached to the shaft in a region thereof proximate to one of two bearings by means of which the shaft is journaled in a stator housing. An electronic control element annularly surrounding the rotor shaft is disposed partially within the rotor hub, an end portion of the control element projecting beyond the rotor hub and being mechanically connected to a stator located radially outwardly from the rotor. The stator and the control element are rotatably mounted in the housing and comprise respective segments which are removable for maintenance purposes through openings in a stator housing.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: February 24, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventors: Kurt Plackner, Rudolf Schamberger, Max Kirchpfening, deceased