Patent ID: 7992648

Claim:
An ultrahigh pressure firefighting skid unit for mounting to an all-terrain vehicle comprising: a skid platform; a U-shaped water tank having portions forming an upwardly opening central U, the water tank mounted on a portion of the skid platform closest to a forward end; a reel and a high-pressure hose wound thereon, the hose terminating in a high-pressure fog nozzle, the reel mounted to the water tank in the upwardly opening central U; a high-pressure water pump forming a source of 800 to 1,500 psi water mounted to the skid platform behind the U-shaped water tank; an internal combustion engine mounted in driving relation to the high-pressure water pump; wherein the high-pressure water pump has a low-pressure side connected to the water tank through a check valve; wherein the high-pressure water pump has a high-pressure side; a high-pressure manifold connected to the high-pressure side of the high-pressure water pump; a pressure unloader valve connected in high-pressure water receiving relation to the high-pressure manifold and connected in high-pressure water supplying relation to a first pressure hose which is in supplying relation to the reel and the high-pressure hose terminating in the high-pressure fog nozzle, and the unloader valve is also connected in high-pressure water supplying relation to a second hose which connects to the high-pressure water pump to effect recirculation, the pressure unloader valve having a valve setpoint such that the unloader valve switches from the first high-pressure hose to the second high-pressure hose when the unloader valve is subject to a pressure higher than the setpoint; and an engine idle control valve mounted to the high-pressure side of the high-pressure water pump, and idle controlling operatively connected to the internal combustion engine, the idle control valve having a setpoint such that the idle control valve operates when the pressure unloader valve operates.