Abstract: This invention relates to a building intruder defensive shield system to deter, delay and distract intruders from causing damage or harm upon entering and roaming buildings. The defensive shield system includes a cold water supply plumbed to an expansion tank capable of pressurizing the water with a zone valve and nozzle. A motion sensor, control relay, and a central processing unit communicate signals to and from each other and the zone valve to disperse a timed, forced spray of water, preferably containing dye or a chemical irritant, on the intruder. Manual or gunshot detection means are included to identify and locate the intruder.

Abstract: A building intruder defensive system includes a shield module including a tank configured to hold pressurized fluid, a nozzle, and a zone valve connected to the tank and the nozzle, the zone valve being configured to regulate flow of the pressurized fluid from the tank to the nozzle, a sensing device configured to sense presence of an intruder, and to output a signal indicating the presence of the intruder, and a processor programmed to receive the signal from the sensing device as indicating the presence of the intruder, to control the zone valve to cause the zone to open and close so as to spray the pressurized fluid through the nozzle, and to communicate with at least one remote device to deliver system information to at least one of law enforcement and a building occupant.

Abstract: This invention relates to a building intruder defensive shield system to deter, delay and distract intruders from causing damage or harm upon entering and roaming buildings. The defensive shield system includes a cold water supply plumbed to an expansion tank capable of pressurizing the water with a zone valve and nozzle. A motion sensor, control relay, and a central processing unit communicate signals to and from each other and the zone valve to disperse a timed, forced spray of water, preferably containing dye or a chemical irritant, on the intruder. Manual or gunshot detection means are included to identify and locate the intruder.