ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,639, issued on Sept. 2, was assigned to Joseph Voegele AG (Ludwigshafen/Rhein, Germany).
"Tamper stroke adjustment" was invented by Klaus Bertz (Dittelsheim-Hessloch, Germany), Ralf Weiser (Ladenburg, Germany), Tobias Noll (Roschbach, Germany) and Christian Pawlik (Neustadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a road finishing machine with a screed for producing a paving layer, wherein the screed includes at least one compacting unit for precompacting paving material supplied to the screed. The compacting unit includes at least one eccentric bushing mounted on an eccentric shaft supporting the same and ro...