VEHICLE PARKING BRAKE Russian patent published in 2002 - IPC

FIELD: transport engineering; vehicle brake systems. SUBSTANCE: proposed parking brake has shutoff valve installed between master and operating brake cylinders, brake mechanisms in number equal to number of vehicle wheels, and electronic unit connected to shutoff valve. According to invention, parking brake is provided with additional front and rear brake shoe pressure sensors in number equal to number of brake shoes in brake mechanisms, gearbox lever sensor, door position sensors in number equal to number of vehicle doors, wheel rotation sensors in number equal to number of wheels, passenger seat sensor, electronic unit supply switch and driver's seat belt sensor. All indicated are connected to electronic unit, unit and passenger seat belt sensor is connected to passenger seat sensor. Brake shoes are installed for limited displacement in plane of wheel rotation. EFFECT: improved safety, provision of automatic braking of vehicle at parking, protection from hi-jacking. 2 dwg