Patents by Inventor C. Frederick Eben

C. Frederick Eben 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).

  • Transition plate for a mine roof truss
    Patent number: 4395161
    Abstract: A generally rectangular transition plate for connecting inclined and horizontal chords of a mine roof truss has one face defining a generally flat planar plate bearing surface adapted to be closely received against a mine roof. The sides and one end of the plate are bent outwardly from the one face. A first opening in the plate adjacent the one end is adapted to receive a mine roof bolt. A second opening in the plate is located adjacent the other end of the plate. A saddle portion extends between the other end of the plate and the second opening and is adapted to receive a truss tie member. The plate has a low profile and sufficient rigidity to sustain the forces present in the truss.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: July 26, 1983
    Assignee: Bethlehem Steel Corporation
    Inventors: Edwin B. Wilson, C. Frederick Eben, Charles L. Meyer, Charles W. Schaeffer