DB NETZ AG Patent applications |
Patent application number | Title | Published |
20130140406 | FOLDING SWITCH - The invention relates to a switch and to a method for transporting and installing such a switch, which is equipped with longitudinal sleepers, the sleeper sections ( | 06-06-2013 |
20120181343 | PRESTRESSED CONCRETE SLEEPER AND METHOD FOR TRANSPORTING AND INSTALLING A SWITCH HAVING PRESTRESSED CONCRETE SLEEPERS - The invention relates to a prestressed concrete sleeper, having at least two sleeper sections that can be coupled or are coupled rigidly by a connection device embedded in the sleeper heads, wherein the sleeper sections each comprise a concrete in the region adjacent to the connection device which has a higher rigidity than the concrete in the other regions | 07-19-2012 |