Patents by Inventor Walter Benkler

Walter Benkler 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).

  • Electrically insulated rail joint connection
    Patent number: 4386736
    Abstract: An electrically insulated rail joint having two integral plastic fishplates with embedded steel reinforcement bolted on opposite sides of the rail joint. Each fishplate is provided with vertical spaced projecting ribs having wedge-shaped faces engaging the rail sides.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: June 7, 1983
    Inventors: Walter Benkler, Werner Hartmann