The figure above shows a home surrounded by an In-Ground Spray System that is putting up a wall of water to stop a grassfire and embers. The water can come from a pool or a cistern or a 1000 gallon
above-ground tank. Water from a household spigot is not nearly enough to protect a home.
Note that the shape of the spray from each nozzle is actually a triangle.
The full patent can be seen after the photos below.
Unlike rotary sprinklers, there are no moving parts.
These inventions are protected by
US Patents 7,819,345, 7,942,350 and 9,561,393, 11,203,023,
and Canadian patents 2,693,158, and 2,891,833 and several
pending US patents.
This nozzle is made from only PVC pieces. This is the lowest cost method of building a nozzle. PVC could be damaged by a fire but the cradle will protect it.
Other pages of this website will show a nozzle that has an outer layer of a fire resistant hose. That nozzle is designed to be placed above ground when a fire is coming. The nozzles will be 10 feet apart and connected by
2.5 inch fire hose that is resistant to fire. The cost of the cradle is not yet known.
PVC pipe can be used to supply water to all nozzles.
This product is US Patent Pending.
The top of the cradle will be at ground level. The cradle is not harmed by the weight of an automobile. A stainless steel zip tie is shown on the left half of the cradle.
It is used to secure the nozzle in the cradle so that the desired spray angle is maintained.
Two stainless zip ties will be used.
The above photo shows that the nozzles can be connected by a hose lay on top of the ground. Three inch hose will not be required on most houses.
It has the same spray pattern as the larger nozzle described earlier,
but it costs less and delivers less water. It was created to confine prescribed fires.
This will be shown later on this site.
However, this smaller and lower cost nozzle can be used for the lowest
possible cost home protection system.