초록 ▼

An anti-theft system for vehicles, such as trucks, which is operated by a self-contained hand held transmitter. The system is enabled by activating the vehicle\s parking brake system. The transmitter transmits a predetermined signal that activates/deactivates any one of a plurality of manually selec

An anti-theft system for vehicles, such as trucks, which is operated by a self-contained hand held transmitter. The system is enabled by activating the vehicle\s parking brake system. The transmitter transmits a predetermined signal that activates/deactivates any one of a plurality of manually selected security systems only after the anti-theft system verifies the predetermined signal. Typical security systems lock the parking brake system or interrupt the fuel supply of the vehicle.

대표청구항 ▼

A vehicle anti-theft device for a truck having a parking brake system, said device comprising: (a) locking means for preventing operation of said truck; (b) a portable, battery operated infrared light transmitter comprising a manual switch for selectively activating emission of a; predetermined stre

A vehicle anti-theft device for a truck having a parking brake system, said device comprising: (a) locking means for preventing operation of said truck; (b) a portable, battery operated infrared light transmitter comprising a manual switch for selectively activating emission of a; predetermined stream of light pulses and (c) a control unit, operable only after engagement of said parking brake system, said control unit comprising an infrared detector for receiving said stream of light pulses, a demodulator for converting said stream of light pulses to a digital data stream, and a microprocessor which compares said digital data stream to a digital identification code stored in a read only memory, said microprocessor enabling activation/deactivation of said locking means for preventing operation of said truck whenever said digital data stream is identical to said digital identification code.