Anti-theft automobile security system
First Claim
1. A motorized-vehicle anti-theft security system for precluding unauthorized engine operation, comprising:
- engine enabling code means responsive to an encoded input signal for enabling operation of an engine of a vehicle;
manually operated switch means placed in the vehicle for selective operation only by a driver of the vehicle after the engine is enabled by said engine enabling code means; and
engine disabling means responsive to activation of said switch means for producing a signal to disable the operation of said engine and for requiring inputting of another encoded input signal to said engine enabling code means, before engine disablement occurs, in order for operation of said engine to continue without interruption after occurrence of said activation of the manually operated switch means.
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Accused Products
Abstract
First and second code comparators are sequentially responsive to keypad-entered first and second different codes. The first code enables operation of the engine. When a distance sensing device generates a signal representing traversal of a preset distance, this blocks the further operation of the engine based on the first code. The driver must enter a second code upon receipt of a warning that engine disablement is imminent. To prevent carjacking in which the driver is forcibly ejected from a car having its engine running in a normal operating mode, the driver surreptitiously trips a hidden switch as he exits the car. The hidden switch, which would typically be operated after both codes have been entered and with the engine running, resets the system. After a preset delay which is provided to permit the owner to reach safety from a carjacker, the system once again requires that the second code be inputted. The second code needs to be re-entered to keep the engine running. By this time the car will be sufficiently distant from the owner, and actuation of an alarm such as a siren encourages the carjacker to abandon the car at the time of such disablement.
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Citations
20 Claims
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1. A motorized-vehicle anti-theft security system for precluding unauthorized engine operation, comprising:
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engine enabling code means responsive to an encoded input signal for enabling operation of an engine of a vehicle; manually operated switch means placed in the vehicle for selective operation only by a driver of the vehicle after the engine is enabled by said engine enabling code means; and engine disabling means responsive to activation of said switch means for producing a signal to disable the operation of said engine and for requiring inputting of another encoded input signal to said engine enabling code means, before engine disablement occurs, in order for operation of said engine to continue without interruption after occurrence of said activation of the manually operated switch means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An automobile anti-theft security system for precluding unauthorized engine operation, comprising:
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first engine enabling code means responsive to a first encoded input signal for enabling operation of an engine of an automobile; engine disable means for disabling said engine after a predetermined time delay; second engine enabling code means for overriding said engine disable means in response to an occurrence of a second encoded input signal within said predetermined time; and manually operated switch means for selective operation by a driver of said automobile after the engine is enabled by both said first and second engine enabling code means, said switch means including first delay means responsive to activation of said switch means for delayed disablement of the operation of said engine after it has been enabled in order to require entry of said second encoded input signal to said second engine enabling code means for enabling continued operation of said engine after occurrence of said activation of the switch means. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An anti-theft method for an automobile comprising the steps of:
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entering a first code for enabling the operation of an automobile engine; automatically disabling said engine after a certain delay from when the first code has been entered; entering a second code after the engine has been enabled by the first code to block said step of automatically disabling said engine to thereby continuously operate the engine; and selectively activating by the driver of the automobile the step of automatically disabling said engine as it is being continuously operated, so that disablement of the engine occurs unless said second code is entered. - View Dependent Claims (18)
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19. An anti-theft method for an automobile, comprising the steps of:
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enabling operation of an automobile engine by manually manipulating a first device by a driver to produce an engine enablement signal for causing the engine to operate continuously; and selectively actuating a second device in the automobile only by the driver of the automobile to disable further continuous operation of the engine unless, before engine disablement occurs, said first device is manipulated by the driver to produce said engine enablement signal.
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20. An anti-theft method for an automobile, comprising the steps of:
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producing a control signal by the driver of the automobile for operating an automobile engine continuously in a normal operating mode; and selectively actuating a device in the automobile only by the driver for disrupting said normal operating mode unless, before disruption of the normal operating mode occurs, a predetermined operation is manually performed by the driver.
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Specification