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 Anti-theft automobile security system

Details
Inventors: Weinblatt, Lee S.;
Assignee:
Primary Examiner: Hofsass; Jeffery
Assistant Examiner: Wu; Daniel J.
Attorney, Agent or Firm: Frishauf, Holtz, Goodman, Langer & Chick, P.C.

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.

DETAILED DESCRIPTION One object of the invention is to provide an improved automobile anti-theft security system.
Another object of the invention is to provide an automobile security system which prevents loss of a car due to carjacking.
A further object of the invention is to minimize the danger to which a driver is exposed during a carjacking.
Still another object of the invention is to inhibit the defeat of the security system by "jumping" wires in the passenger compartment.
These and other objects are attained by one aspect of the invention directed to an anti-theft method for an automobile, comprising the steps of enabling operation of an automobile engine by manually manipulating a first device to produce an engine enablement signal for causing the engine to operate continuously, and selectively actuating a second device in the automobile to disable further continuous operation of the engine unless the first device is manipulated to produce the engine enablement signal.
Another aspect of the invention involves an anti-theft method for an automobile, comprising the steps of producing a control signal for operating an automobile engine continuously in a normal operating mode, and selectively actuating a device in the automobile for distrupting the normal operating mode unless a prescribed operation is manually performed.
A further aspect of the invention involves an automobile anti-theft security system for precluding engine operation in accordance with one aspect of the present invention comprises engine enabling code means responsive to an encoded input signal for enabling operation of the engine.
A manually operated switch means is unobtrusively placed in the automobile for selective operation by the driver of the automobile after the engine is enabled and running normally.
The switch means includes means responsive to the activation thereof for disabling the operation of the engine, and for requiring entry of an encoded input signal to the code means for enabling further operation of the engine


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