Patents by Inventor Walter Bierent

Walter Bierent 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).

  • Windshield wiper speed control arrangement
    Patent number: 4614903
    Abstract: In a circuit arrangement for a reversible electric motor for directly driving a windshield wiper the motor is operated at reduced rotational speed in predetermined angular ranges to ensure smooth starting and stopping in the reversing positions and an accurate parking position.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: September 30, 1986
    Assignee: ITT Industries, Inc.
    Inventors: Helmut Betsch, Walter Bierent, Gunther Gille, Horst Goertler, Hans Prohaska, Horst Rachner