ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,520,980, issued on Jan. 13, was assigned to FESTOOL GMBH (Wendlingen, Germany).
"Electrical device, in particular suction device or machine tool" was invented by Rainer Hafenrichter (Buch, Germany) and Jan Kopf (Ulm, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical device, in particular in the form of a suction device (10) or a machine tool, with a housing (20) in which at least one electrical load, in particular an electric drive motor (11D), is arranged, wherein the electrical device has a power supply unit (80) with an energy storage receptacle (81), for the electrical power supply of the electrical load, in particular the drive m...