ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,642, issued on July 29, was assigned to C. & E. FEIN GMBH (Schwaebisch Gmuend-Bargau, Germany).
"Magnetic base" was invented by Sergej Denzel (Schwaebisch Gmuend, Germany) and Stefan Scherrenbacher (Waldstetten, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic base for an electric power tool, in particular for a magnetic core drilling machine. The magnetic base having a base body, in which at least one first solenoid coil forming an electromagnet is accommodated in a receiving space, whose magnetic force is switchable between a maximum resulting holding force and a minimum resulting holding force. A first side that is adapted to be ...