ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,929, issued on March 3, was assigned to Hilti AG (Schaan, Liechtenstein).
"Power tool having a first gear stage and a belt drive" was invented by Georg Holzmeier (Marktoffingen, Germany), Thomas Reichenberger (Untermuhlhausen, Germany) and Ralf Greitmann (Kaufering, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool includes a motor, a rotary disk, a belt drive connecting the motor to the rotary disk, and a reduction gear stage between the motor and the belt drive. A power tool with a ratio of an outer diameter of the drive pulley and an outer diameter of the output pulley being 0.75 to 1.33 is also provided as is a method of operat...