Patent ID: 6650234
Filing Date: 2003-11-18
Classification: B60R

Abstract:
A vehicular anti-theft system with brake line valve comprising, in combination:a vehicle having a master cylinder, a brake pedal, a pair of front brakes connected to the master cylinder via at least one front brake line, and a pair of rear brakes connected to the master cylinder via at least one rear brake line, whereby the master cylinder is adapted to increase the pressure in the brake lines upon the depression of the brake pedal thereby actuating the front and rear brakes; an alarm system comprising a first relay connected to a horn and a set of lights of the vehicle, the first relay adapted to actuate the horn and set of lights only during the receipt of an alarm signal, the alarm system further having a second relay adapted to preclude normal operation of a starter of the vehicle only during the receipt of the alarm signal; a valve mechanism connected to the front and rear brake lines between the master cylinder and the front and rear brakes, the valve mechanism having a housing with a four solenoidal valves, one associated with each brake line, each solenoidal valve having a first orientation for precluding the change of pressure within the associated brake line between the associated brakes and solenoidal valve thereby preventing control of the associated brakes by the master cylinder and a second orientation for allowing the change of pressure within the associated brake line between the associated brakes and solenoidal valve thereby allowing control of the associated brakes by the master cylinder, the solenoidal valves each having an associated relay adapted to transfer the corresponding solenoidal valve to the first orientation thereof upon the receipt of a close valve signal and further adapted to transfer the corresponding solenoidal valve to the second orientation thereof upon the receipt of an open valve signal, whereby upon the lack of receipt of the open and close valve signals, the solenoidal valve is adapted remain in a present orientation thereof without consuming power; a key pad situated within an interior space of the vehicle, the key pad including a plurality of numeric keys adapted to transmit a sequential numeric code sequence upon the sequential depression thereof, a reset key adapted to transmit a reset signal upon the depression thereof, an arm key adapted to transmit an arm signal upon the depression thereof, a red light emitting diode situated on a front face thereof for emitting a red light upon the actuation thereof, and a green light emitting diode situated on a front face thereof for emitting a separate green light upon the actuation thereof; and control circuitry coupled between the relays of the alarm system, the relays of the valve mechanism, and the keypad, the control circuitry having a first mode of operation initiated by the receipt of the arm signal whereupon the red light emitting diode is actuated and the close valve signal is transmitted to the relays of the valve mechanism, the control circuitry further having a second mode of operation initiated by the receipt of a correct numeric code sequence and the subsequent receipt of the reset signal whereupon the green light emitting diode is actuated and the open valve signal is transmitted to the relays of the valve mechanism, the control circuitry further having a third mode of operation initiated by the receipt of an incorrect numeric code sequence and the subsequent receipt of the reset signal whereupon the alarm signal is transmitted to the alarm system for a predetermined time period, whereby a user depresses the brake pedal prior to depressing the arm button.