Patents by Inventor Karl-Heinz Richard

Karl-Heinz Richard 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: 5166582
    Abstract: Drive arrangement for spinning stations of an OE spinning machine. The feed rollers of the spinning stations can be driven by an electric motor and the draw-off rollers by another electric motor. At least one of these two motors is a synchronous motor. Each of the two motors can be fed supply currents of adjustable frequency by a reverse rectifier, with the rotational speed of one of these two motors being adjusted as a function of the rotational speed of the other motor which is sensed by a pulse generator in such manner that the set rotational speed ratio of these two motors remains constant at operating speeds and in that the operating speeds are ensured even in case of brief network outage.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: November 24, 1992
    Assignee: Schubert & Salzer Maschinenfabrik AG
    Inventors: Wolfgang Jaeger, Karl-Heinz Richard, Hermann Adolf