ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,769, issued on June 23, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Hand-held power tool with a mechanical percussion mechanism" was invented by Willy Braun (Neustetten, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hand-held power tool has a housing in which a drive motor for driving a percussion mechanism is arranged. The percussion mechanism has a percussion piston arranged in a hammer tube for displacement along an associated percussion axis, via a connecting rod. The percussion mechanism is assigned an eccentric for driving the connecting rod in rotation. A reduction-gear mechanism driven by the drive motor has a first s...