US Patent Issued to Dr. Ing. h.c. F. Porsche, ZF Friedrichshafen on March 18 for "Vibration damper and motor vehicle with active suspension" (German Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,972, issued on March 18, was assigned to Dr. Ing. h.c. F. Porsche AG (Germany) and ZF Friedrichshafen AG (Germany).

"Vibration damper and motor vehicle with active suspension" was invented by Swen Zschocke (Wiernsheim-Serres, Germany), Robert Schreiber (Friedrichroda, Germany) and Rainer Beilner (Bergrheinfeld, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vibration damper with a damper piston which is arranged in a main tube with hydraulic medium and can be moved to and fro in an axial direction relative to the main tube. The main tube is arranged in a container tube, wherein an intermediate tube is arranged between the main tube and th...