ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,066, issued on Feb. 10, was assigned to Wirtgen GmbH (Windhagen, Germany).
"Self-propelled construction machine" was invented by Philip Verhaelen (Lohmar, Germany) and Michael Engels (Montabaur, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a self-propelled construction machine (1), in particular slipform paving machine, comprising a machine frame (2), at least three travelling devices (14), wherein the travelling devices (14) are each connected to the machine frame (2) by means of lifting columns (12), wherein at least two of the at least three travelling devices (14) are steerable by means of one each steering drive (6), wherein the re...