Patents by Inventor Friedrich Dannehl

Friedrich Dannehl 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).

  • Supply line
    Publication number: 20070131105
    Abstract: A supply line for connecting a hydraulic advancing support to a hydraulic supply system led along a conveyor is disclosed. The supply line includes a feed connection connectable to the supply system and an advancing support connection located a predetermined distance from the feed connection. A piston arrangement is located within a cylinder tube, and an inner duct having a variable length connects the feed connection and the advancing support connection.
    Type: Application
    Filed: October 12, 2006
    Publication date: June 14, 2007
    Inventors: Friedrich Dannehl, Werner Reinelt