ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,258, issued on Oct. 28, was assigned to ZF CV Systems Global GmbH (Bern, Switzerland).
"Trailer control valve of a towing vehicle" was invented by Mirko Brutt (Springe, Germany) and Jan Spremberg (Wennigsen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trailer control valve for controlling a hydraulic dual-line brake system of a trailer vehicle has an inlet for a hydraulic supply line of the towing vehicle, a tank outlet for an unpressurized return-flow line of the towing vehicle, a brake pressure outlet, and a supplemental pressure outlet. The brake pressure outlet can be connected in a stepped manner with an electronically controlled b...