Vehicle theft prevention system
First Claim
1. A vehicle theft prevention system comprising a receiver adapted to receive a signal from a transmitter located remotely therefrom, means coupled to said receiver for producing a control signal when the signal received at said receiver from the transmitter is below a predetermined level corresponding to the distance between the transmitter and receiver exceeding a predetermined amount, switch means connected to said control signal producing means and operated between a first condition to a second condition by said control signal, and theft inhibiting means including means for disabling the vehicle ignition system operatively connected to said switch means and actuated upon the operation of said switch means.
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Accused Products
Abstract
A vehicle theft prevention system includes a receiver located in the vehicle for receiving a signal from a remote transmitter. When the distance between the receiver and transmitter exceeds a predetermined amount, such that the signal strength at the receiver is less than a predetermined signal level, a control circuit is actuated which upon actuation may actuate an alarm, deactuate the vehicle ignition system so as to prevent further operation of the vehicle, or both.
46 Citations
6 Claims
- 1. A vehicle theft prevention system comprising a receiver adapted to receive a signal from a transmitter located remotely therefrom, means coupled to said receiver for producing a control signal when the signal received at said receiver from the transmitter is below a predetermined level corresponding to the distance between the transmitter and receiver exceeding a predetermined amount, switch means connected to said control signal producing means and operated between a first condition to a second condition by said control signal, and theft inhibiting means including means for disabling the vehicle ignition system operatively connected to said switch means and actuated upon the operation of said switch means.
Specification