Auto anti-theft system
First Claim
1. An auto anti-theft system comprising:
- an ignition circuit for an engine;
a battery connected in series with said ignition circuit for providing starting power and running power;
an engine starter;
a starter solenoid operably coupled in series between said engine starter and said ignition circuit;
said starter solenoid having a coil operating opening and closure of starter solenoid contacts thereby said coil is energized by said ignition circuit;
a first isolation gate connected in series between said starter solenoid contacts and said engine starter for selectively conducting said starting power to said engine starter form said battery;
a pulse generation circuit operably coupled between said ignition circuit and said engine starter via said first isolation gate responsive to energizing of said ignition circuit to generate a trigger signal; and
said first isolation gate connected to said pulse generation circuit and responsive to said trigger signal to conduct said starting power from said battery to said starter.
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Accused Products
Abstract
Apparatus is disclosed herein for installation on an automotive vehicle which includes a receiver operably responsive to a remotely transmitted signal for incapacitating the vehicle power plant and for actuating warning lights indicative of vehicle unauthorized usage. The system includes a control unit response to operation of the receiver to interrupt fuel provided to the fuel pump via a centrifugal switch. Brake and hazard lights are energized to indicate a warning and hazard condition while the required triggering of an SCR or a power mosfet semiconductors coupled to the starter isolates the starter from the auto ignition system. A reset circuit is included for returning to normal auto operational systems and a delay circuit coupled to the control unit delays energizing the system for a predetermined period of time.
40 Citations
11 Claims
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1. An auto anti-theft system comprising:
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an ignition circuit for an engine; a battery connected in series with said ignition circuit for providing starting power and running power; an engine starter; a starter solenoid operably coupled in series between said engine starter and said ignition circuit; said starter solenoid having a coil operating opening and closure of starter solenoid contacts thereby said coil is energized by said ignition circuit; a first isolation gate connected in series between said starter solenoid contacts and said engine starter for selectively conducting said starting power to said engine starter form said battery; a pulse generation circuit operably coupled between said ignition circuit and said engine starter via said first isolation gate responsive to energizing of said ignition circuit to generate a trigger signal; and said first isolation gate connected to said pulse generation circuit and responsive to said trigger signal to conduct said starting power from said battery to said starter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An auto anti-carjack and anti-theft system comprising:
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an ignition circuit for an engine; a pulse generation circuit producing a control signal operably coupled to said ignition circuit; a battery connected with said ignition circuit for providing starting power and running power; an engine starter operably coupled to said engine; a starter solenoid having a relay coil and starter contacts; said starter solenoid relay coil connected in series with said battery and said ignition circuit; said battery connected in series with said starter solenoid starter contacts and said engine starter to provide said starting power; a first isolation gate connected in series with said starter solenoid starter contacts and said engine starter for selectively conducting said starting power to said engine starter from said battery; a first isolation gate trigger resistor; a first isolation gate trigger connected in series with said first isolation gate trigger resistor; said pulse generation circuit connected in series with said first isolation gate trigger resistor; said ignition circuit for initiating said starter power to said starter solenoid relay coil simultaneously with said pulse generation circuit sending a voltage pulse to said first isolation gate trigger resistor for triggering said first isolation gate into a state of conduction permitting passage of said starting power from said battery through closed starter solenoid starter contacts via said first isolation gate to said engine starter; and said ignition circuit adapted to terminate said starting power to said starter solenoid relay coil as said starting power is cut off to said first isolation gate by said starter solenoid starter contacts opening and said first isolation gate reverts automatically to a non-conductive state;
said first isolation gate being retriggered into a state of conduction before said starting power energizes said engine starter. - View Dependent Claims (11)
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Specification