Patents by Inventor Viktor Grinewitschus

Viktor Grinewitschus 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).

  • Method for controlling a direct current drive
    Patent number: 6005361
    Abstract: In a method of controlling a direct-current drive, in particular a directrrent door drive, two state variables of the direct-current drive are determined and, on the basis of these state variables, a load or resistance moment applied to the direct-current drive is determined and compared with a predetermined load or resistance moment. Subsequently, it is established that an abnormal situation exists when the load or resistance moment determined exceeds the predetermined load or resistance moment.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: December 21, 1999
    Assignee: Fraunhofer-Gesellschaft zur Foderung der Angewandten Forschung e.V.
    Inventors: Viktor Grinewitschus, Dirk Raffel