Motor vehicles – With means for promoting safety of vehicle – its occupant or... – By preventing unauthorized or unintended access or use
Patent
1989-08-17
1991-02-12
Bertsch, Richard A.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
By preventing unauthorized or unintended access or use
70243, 307 102, 307 104, 34082556, B60R 2504
Patent
active
049916831
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an anti-theft vehicle system.
Many methods are used in order to prevent the theft of vehicles. The most common method is to utilize an alarm which sounds when a person attempts to gain unauthorized entry into a vehicle. The major problem with most alarm systems, apart from their complexity and their expense, is that they require actuation when an owner leaves his or her vehicle.
BRIEF SUMMARY OF THE INVENTION
The object of this invention is to provide a simple and inexpensive system for preventing the theft of a vehicle and which is automatically actuated when the vehicle is switched off.
The invention may be said to reside in an anti-theft vehicle system comprising means to disrupt the power supply to one or more components of a vehicle engine to prevent the engine from operating when the vehicle is switched off and reset means for causing the means to disrupt the power supply to the component to reconnect the power supply when it is desired to restart the vehicle.
Since the invention incorporates a means which disrupts the power supply to the engine the vehicle cannot be started until action is taken to cause the means to restore power to the engine. Since power to the engine can be easily disrupted the system can be built into a vehicle and is not expensive to produce or complicated to manufacture. Further since the power supply is disrupted when the vehicle is switched off it is not necessary to remember to switch a device on or off in order for the anti-theft system to be actuated.
Preferably the means which disrupts power to the engine disrupts the supply of electric power to a coil of the engine and also to an electric fuel pump which supplies fuel to the engine. If a vehicle is not supplied with an electric fuel pump preferably a flow switch is provided in the fuel line and the disruption of the power to the flow switch causes the fuel line to be blocked to prevent the flow of fuel to the engine.
Preferably the means which disrupts the power to the engine comprises a relay which, upon turning off an ignition switch with a key, opens the power line to the coil, fuel pump or flow switch which thereby disrupts the supply of power to the coil, fuel pump or flow switch.
Preferably the reset means is a reset switch which must be reset before power can be resupplied to the coil, fuel pump or flow switch and preferably a by-pass circuit is provided which has a switch which enables the system to be short circuited in the event that it is necessary to turn off the ignition switch but enable the vehicle to be driven by others without the need to reset the reset switch.
In an alternative embodiment the reset means comprises a keyboard which is coupled to a processor means, the keyboard being adapted to have a code entered into the keyboard such that the processor upon recognition of the code, outputs a signal to the relay to reconnect the power supply to the one or more components of the vehicle engine.
In another aspect the invention may be said to reside in an anti-theft system for a vehicle comprising an actuating means for location in an ignition or coil line in a vehicle the actuating means being adapted to open and close the ignition line to disrupt or supply power to a component of the engine, and a switch means for location in a power supply line, the power supply line coupling the power side of the ignition line to the actuating means for powering the actuating means, wherein upon turning off the ignition, power supply on the power supply line is disrupted to cause the actuating means to open the ignition line and upon turning on the ignition and actuating the switch means, power is supplied to the actuating means to cause the actuating means to close the ignition line to enable power to be supplied on the ignition line to the component of the vehicle.
In a further aspect the invention may be said to reside in a vehicle having an anti-theft system as described hereinabove.
The invention also provides an anti-theft ignition system for a vehicle
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Garretto Michael A.
Howitt Warren A. M.
Vanda Edward
Bertsch Richard A.
Fail Proof Anti Theft System Pty. Ltd.
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