ANTITHEFT DEVICE FOR AUTOMOTIVE VEHICLE Russian patent published in 1995 - IPC

FIELD: automotive industry; electrical equipment of automotive vehicles. SUBSTANCE: device has series-connected jarring pickup, amplifier, timer, actuating unit, signalling element and mode selector unit connected with corresponding inputs of timer, contact transmitter unit and trigger. Circuit provides operation of device under special conditions used in day time which prevents false operation of jarring pickup and guarantees operation of device only in case of real attempt of high-jacking of vehicle. Design of timer makes it possible to delay connection of pickup for 1-2 s after end of sounding of alarm which precludes false operation caused by vibration of vehicle appearing at sounding of alarm. EFFECT: enhanced operation reliability. 2 cl, 2 dwg