ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,455, issued on June 24, was assigned to GUSTAV KLAUKE GMBH (Remscheid, Germany).
"Hydraulically actuatable work device designed to be handheld" was invented by Roman Bobowicz (Remscheid, Germany) and Egbert Frenken (Heinsberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulically activatable working device includes a hydraulic cylinder and at least one first and one second partial piston provided therein. The partial pistons can be moved under pressurization by a hydraulic medium to perform a working operation. Each partial piston has an impact surface at its lower end against which the hydraulic medium may act. A piston rod is coup...