ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,442, issued on June 24, was assigned to CEMBRE S.P.A. (Brescia, Italy).
"Impact tool" was invented by Gualtiero Barezzani (Brescia, Italy) and Gianpaolo Luciani (Brescia, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "An impact wrench includes a motor unit with a motor adapted to produce a rotary motion and an operating switch for operating the motor. A tool-holder shaft rotatable about a rotation axis. A transmission unit with a percussion mechanism, connects between the motor unit and the tool-holder shaft. A handlebar structure has two manual gripping handles. An electronic control system contains at least one electronic control board conne...