Patents by Inventor Frank L. Trapschuh

Frank L. Trapschuh 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).

  • Apparatus for sensing and indicating the angular relationship between a towing and a towed vehicle
    Patent number: 4122390
    Abstract: A sensing apparatus having a stationary part and a movable part which rotates in relation to the stationary part, is attached to both a towing and the towed vehicle so that the stationary part is fixedly attached to one vehicle and the movable part is relatively fixedly attached to the other vehicle. The angular relationship between the towing and the towed vehicle is reflected in the angular relationship between the stationary part and the movable part of the sensing apparatus. This angular relationship is electrically sensed and displayed on an indicating device in the towing vehicle.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: October 24, 1978
    Inventors: Gerhard Kollitz, Frank L. Trapschuh