ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,219, issued on Jan. 13, was assigned to Thomas Magnete GmbH (Herdorf, Germany).

"Hydraulic circuit" was invented by Olaf Ohligschlager (Grunebach, Germany), Robert Heinz (Hachenburg, Germany), Etienne Dautry (Daaden, Germany) and Christian Kretzer (Daaden, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic circuit comprising a high-pressure connection, a low-pressure connection, a supply unit, and a pump system. The low-pressure connection is fluidically connected to the high-pressure connection by a series circuit of the supply unit and the pump system. The pump system has a pump for conveying a fluid, a shaft for driving the pump, ...