Abstract: The present invention is a spraying system that extinguishes flying embers that may land on a roof from brush fires or forest fires. This includes a submersible pump at the bottom of a well that is attached to a supply pipe that allows water to be pumped into a reservoir. Another submersible pump is inside the reservoir that pumps water thru a supply pipe that is attached to the roof. This area is called a water station that may also be equipped with a generator for a backup power source. The supply pipe has pipe couplings attached at certain intervals and has sprayers installed into the couplings. These sprayers will then give off an adequate amount of water to soak down the entire roof area in the event of an approaching fire. All of this is assembled and placed in specially designed roof fasteners that are installed throughout the entire hip and ridge of the roof.

Abstract: A beam of electromagnetic wave is suspended at an adjustable distance above a floor or an ice surface by a mechanism that generates electromagnetic wave energy and detects that same energy bounced back from a reflector plate placed a distance apart from the generator source. This beam of electromagnetic transmission suspended across the distance between the transceiver and reflector keeps an electric switch open and an electric alarm disabled or silent. Whenever the invisible beam is broken or cut by any obstruction, such as a skate's boot or leg, the alarm mechanism is energized and it will signal an interruption. The alarm signal indicates how high the skater did not reach, so that a practicing skater can be certain of step by step upward progress by constantly trying to keep the alarm off or silent.