Vehicle theft prevention system
First Claim
1. An automatic theft prevention system for use in a vehicle powered by an engine including an ignition system operated from an ignition switch which is closed in order to run the engine and opened in order to stop the engine, a door for entry to the vehicle, a lid for gaining access to a portion of the vehicle and first and second headlights, said theft prevention system comprising:
- a first switch operable in a first state when the door is open and operable in a second state when the door is closed;
cutoff means for automatically disabling the ignition system in response to a cutoff signal and for automatically enabling the ignition system in response to a reset signal;
cutoff control means for generating the cutoff signal in response to the simultaneous opening of the ignition switch and the operation of the first switch in the first state, whereby the ignition system is automatically disabled; and
reset means for generating the reset signal in response to manual actuation by an operator of the vehicle, whereby the operation of the vehicle is enabled.
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Accused Products
Abstract
An automatic theft prevention system for use in a vehicle powered by an engine that includes an ignition system operative from an ignition switch which is closed in order to run the engine and opened in order to stop the engine. The vehicle also includes a door for entry and a lid for gaining access to a portion of the vehicle, such as the trunk or hood. When the ignition switch is opened and a door to the vehicle is opened, the system automatically disables the ignition of the vehicle and enables an alarm system within two minutes after the door is closed. After the alarm system is enabled, an attempt to open the trunk or hood causes the alarm to sound instantaneously, whereas an attempt to open a door does not sound the alarm for a period of ten seconds. This feature enables the driver to gain entry to the vehicle and disarm the alarm system from the inside.
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Citations
11 Claims
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1. An automatic theft prevention system for use in a vehicle powered by an engine including an ignition system operated from an ignition switch which is closed in order to run the engine and opened in order to stop the engine, a door for entry to the vehicle, a lid for gaining access to a portion of the vehicle and first and second headlights, said theft prevention system comprising:
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a first switch operable in a first state when the door is open and operable in a second state when the door is closed; cutoff means for automatically disabling the ignition system in response to a cutoff signal and for automatically enabling the ignition system in response to a reset signal; cutoff control means for generating the cutoff signal in response to the simultaneous opening of the ignition switch and the operation of the first switch in the first state, whereby the ignition system is automatically disabled; and reset means for generating the reset signal in response to manual actuation by an operator of the vehicle, whereby the operation of the vehicle is enabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification