ANTITHEFT SYSTEM Russian patent published in 1997 - IPC

FIELD: automotive industry; security devices to prevent unauthorized use or theft of cars. SUBSTANCE: antitheft system has security set installed in car and operative action set installed in receiving station, for instance, at police patrol service station. Security set is energized by car owner when connecting the alarm. In case of hi-jacking attempt, when the car approaches receiving station operative set generates signal indicating that stolen car is near. Security set on car starts switching on and off car lights at definite frequency. After identification of car by patrol service officer, order is sent by operative action set to stop car and shut down its engine. Transmitting units of both sets are built around relatively influencing superregenerative signal-triggered radio frequency pulse generators. EFFECT: improved antitheft protection of car. 15 dwg