Passive action antitheft device

Details Passive action antitheft device Passive action antitheft device

B - Operations, Transporting

60

R

B60R 25/00 (2006.01) B60R 25/04 (2006.01) G08C 17/00 (2006.01) G07C 9/00 (2006.01)

Patent

CA 2071603

ABSTRACT Antitheft device for vehicles comprising a central unit able to inhibit or enable normal function of the vehicle engine responsive to a coded radio signal e- mitetd by a protable unit activated by a radio signal emitted by the central unit, in which the central unit comprises a first memory, means to transmit at a first frequency a first coded radio signal CODE3 cho- sen at random in a list of codes stored in said first memory, means to receive and recognize a second coded radio signal CODE4; the portable unit consisting of a control and command device comprising a second memo- ry, means to receive and recognize the first coded radio signal CODE3 emitted by the central unit, means to transmit at a second frequency a second coded ra- dio signal CODE4 chosen in a list of codes stored in said second memory and tied to the fist coded radio signal CODE3; the said central unit being able to command the deactivation of the device which inhibits the vehicle's engine responsive to the said second coded radio signal. - 23 -

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