ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,741, issued on March 17, was assigned to Wirtgen GmbH (Windhagen, Germany).
"Slipform paver" was invented by Michael Schwarz (Bad Honnef, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The road construction machine according to the invention, in particular a slipform paver or curing machine for freshly manufactured concrete layers, has a machine frame 1 supported by running gears 3A, 3B, 4A, 4B, on which machine frame a working device 11 is provided, which has a working means 18 that can be moved in a direction running transversely to the working direction I, which working means is fastened to a carriage 13 which is guided on a linear guide...