ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,614, issued on Sept. 1, was assigned to ZF CV Systems Europe BV (Brussels).
"Electro-pneumatic hand brake system" was invented by Rudolf Dueckmann (Isernhagen, Germany), Maciej Semeniuk (Wroclaw, Poland) and Marcin Biernat (Bozkow, Poland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electro-pneumatic hand brake system is for a vehicle with spring-loaded brakes. The system includes a pneumatic relay valve, a bistable solenoid valve for controlling the relay valve and a control unit for controlling the bistable solenoid valve. An outlet of the relay valve is connected to ports for the spring-loaded brakes. An inlet of the bistable solenoid valve ...