ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,734,664, issued on Sept. 15, was assigned to Hilti AG (Schaan, Liechtenstein).
"Impact mechanism arrangement" was invented by Ulrich Mandel (Buchloe Honsolgen, Germany) and Josef Funfer (Koenigsbrunn, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Hammer drill and/or chipping hammer (100) having a drive motor (70), an impact mechanism (10) and a tool fitting (50) for fitting a tool (110), wherein the impact mechanism (10) has an anvil (30) that is axially displaceable in an anvil guide (20) and acts on the tool (110), wherein the impact mechanism (10) is equipped with an idle-strike damper element (11) and a rebound-strike damper element (13), ...