ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,015, issued on Oct. 28, was assigned to Hilti AG (Schaan, Liechtenstein).
"Sealing lip on tool fitting" was invented by Udo Hauptmann (Landsberg, Germany) and Ulrich Mandel (Buchloe Honsolgen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Tool fitting device for a power tool, in particular a chipping hammer, including-a holding device for receiving and holding a tool shank, a retention element extending at least around a section or sections of the holding device, and a dust protection device for preventing the penetration of dust into the tool fitting device. The dust protection device includes at least one first dust stripping element, at ...