Patent ID: 8210306

Claim:
A system for disabling a vehicle carrying a storage tank for holding a substance, said system comprising: a coupler component supportable by the vehicle for receiving a connection from a delivery line; said coupler component including a peripheral housing having a first end and a second end and defining an inner passage for accommodating the flow of the substance therethrough and separating said inner passage from an outer region; a cap attachable to said first end of said coupler component for preventing connection of the delivery line when said cap is attached to said coupler component; a sensor for sensing whether said cap is attached to said coupler component without making contact with said cap; and a switch in communication with said sensor and connectable to at least one drive element of the vehicle to disable the at least one drive element of the vehicle when said cap is not attached to said coupler component, wherein said sensor is configured to distinguish between connection of said cap to said coupler component and connection of the delivery line to said coupler component such that the at least one drive element remains disabled by said switch when the delivery line is connected to said coupler component.