ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,836, issued on Feb. 3, was assigned to ZF CV Systems Europe BV (Brussels).
"Compressed-air braking system for a tractor vehicle" was invented by Thilo Klostermann (Barsinghausen, Germany) and Florian Schwagmeyer (Uetze-Dollbergen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compressed-air braking system of a tractor vehicle includes two service-brake circuits and a parking-brake circuit. A trailer control valve has a control input connected to a brake control line connected to a brake line of one of the service-brake circuits and an inverted control input connected to a further brake control line routed to a brake line of the parking-bra...