US 5,307,048 A · Vehicle security system including an anti-carjacking system

Abstract

A vehicle security system for protecting a vehicle from carjacking and from theft while the vehicle is unattended. The portion of the security system which protects the vehicle from theft while the vehicle is unattended is selectively initiated by pressing a command button on a remote control transmitter. In response thereto, a first disablement sequence is initiated which includes disabling the vehicle. The portion of the security system which protects the vehicle from carjacking is automatically initiated by the starting of the engine. A second disablement sequence is initiated upon either the sensing of a door opening while the engine is running or upon receipt of a signal transmitted by the remote control transmitter. The second disablement sequence provides a warning to persons inside and outside the vehicle prior to engine disablement and the actuation of a plurality of sirens. To enable the engine after a disablement, a simultaneous actuation of the remote control transmitter and a concealed switch is required.

Claims25

Dependent claims

A vehicle security system for use with a vehicle having an engine and an interior passenger compartment, the security system comprising:

disablement means coupled to the engine for disabling the engine;
enablement means coupled to the engine for enabling the engine after being disabled;
a first input device being located in the interior passenger compartment for providing a first signal to the enablement means when the first input device is actuated;
and
a second input device detached from the vehicle for transmitting an encoded signal when the second input device is actuated, wherein the second input device includes a remote control unit;
wherein a disablement sequence, which includes the disablement of the engine by the disablement means, is initiated in response to the receipt of the encoded signal when the engine is not disabled, so that the engine may be disabled by a user located externally of the interior passenger compartment;
whereby the enablement means enables the engine in response to receiving both the first signal and the encoded signal when the engine is disabled.

4 more elements

Dependencies are inferred from the claim text.

Vehicle security system including an anti-carjacking system

Life of this patent

Vehicle security system including an anti-carjacking system

Life of this patent

Abstract

Claims25