Patents by Inventor Fritz Knape

Fritz Knape 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).

  • Method for removing ballast from railroad tracks
    Patent number: 4108076
    Abstract: A ballast conditioning machine which removes ballast from railroad tracks by means of a digging chain conveyor driven transversely through the ballast below the normal rail level travels on the rails on wheels and alternatively travels on caterpillar tracks over track sections from which switches or crossings were removed to give the conveyor full access to the ballast.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: August 22, 1978
    Inventor: Fritz Knape