Vehicle anti-theft device
First Claim
1. An anti-theft system for use with unattended and attended vehicles comprising:
- a base microprocessor;
a normally opened relay electrically coupled to said microprocessor for use in disabling an electrical circuit in a vehicle;
a means for carrying an encrypted code;
a reader mounted in said vehicle available for reading said carried code through close proximate contact of said code carrying means with said reader, wherein said reader transfers said code to said microprocessor; and
a means for enabling said base microprocessor while said vehicle is attended defined as a sequential depression of a vehicle brake pedal followed by opening of a door within a predetermined time whereby said electrical circuit will be disabled during a car jacking situation.
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Accused Products
Abstract
An anti-theft alarm system for attended and unattended vehicles enabled by a remotely carried inviolable electronic chip that is read by a voltage supplying receiver. In the unattended mode, the system operates like a conventional alarm system capable of disabling an electronically based vehicle. In an attended mode, the operator can activate the system by brake pedal depression followed by opening of the door within a predetermined time. Upon this sequence of events, the system will allow the vehicle to operate for about 60 seconds allowing the victim to get out of harms way before the vehicle becomes disabled and initiates an alarm sequence. In this mode the only method of restarting the vehicle is by use of a by-pass switch which is easily hidden and known only to the vehicle owner. The system further provides a controller chip for use in all fleet vehicles which lock or unlock the access of the vehicle and a master chip giving access to any vehicle of the fleet.
71 Citations
24 Claims
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1. An anti-theft system for use with unattended and attended vehicles comprising:
- a base microprocessor;
a normally opened relay electrically coupled to said microprocessor for use in disabling an electrical circuit in a vehicle;
a means for carrying an encrypted code;
a reader mounted in said vehicle available for reading said carried code through close proximate contact of said code carrying means with said reader, wherein said reader transfers said code to said microprocessor; and
a means for enabling said base microprocessor while said vehicle is attended defined as a sequential depression of a vehicle brake pedal followed by opening of a door within a predetermined time whereby said electrical circuit will be disabled during a car jacking situation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a base microprocessor;
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12. A method of disabling a vehicle during a car jacking situation comprising the steps of:
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a) installing a cut-off relay in an electrical circuit of a vehicle, wherein said uninterrupted circuit is necessary for continued locomotion of said vehicle; b) coupling said relay to a microprocessor; c) coupling said microprocessor to a brake sensor switch; d) coupling said microprocessor to an entry/exit door switch; e) coupling said microprocessor to an encrypted code reader means for sensing a user bypass; f) programming said microprocessor to perform an anti-carjacking sequence comprising the steps of; i) sampling said brake sensor switch for a sequential series of switch activations; ii) starting a first delay timer period upon sensing the proper number of said brake sensor switch activations; iii) sampling said entry/exit door switch for an activation, with no user bypass, within said first timer period thereby confirming a carjack situation; iv) starting a second delay timer period upon carjack confirmation and check for user bypass within said second timer period; vii) upon completion of said second timer period, opening said relay to disable said vehicle and activate an alerting vehicular alarm. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An anti-theft system for use with unattended and attended vehicles comprising:
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a base microprocessor; a normally opened relay electrically coupled to said microprocessor for use in disabling an electrical circuit in a vehicle wherein said circuit is necessary for continued locomotion of said vehicle; a means for carrying an encrypted code by a user; a reader mounted in said vehicle available for reading said carried code through close proximate contact of said code carrying means with said reader, wherein said reader transfers said code to said microprocessor; a means for enabling said base microprocessor for operation while said vehicle is unattended whereby said electrical circuit will be disabled during a theft situation; a means for enabling said base microprocessor for operation while said vehicle is attended whereby said electrical circuit will be disabled during a car jacking situation; a vehicular alarm for alerting observers of a car jacking or theft situation. - View Dependent Claims (23, 24)
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Specification