Fire sprinkling system for mobile trailers

Claim 1

A fire sprinkling system for a mobile trailer having a roof and sidewalls extending downwardly from the perimeter edges of the roof, the system comprising, in combination: a plurality of stand-off brackets each having one end mounted to the roof at a position spaced inwardly of the edge perimeters, with the brackets projecting upwardly from the roof and terminating in a ring-shaped holder a short distance above the roof, the brackets being disposed on the roof in spaced apart series relationship defining generally a configuration concentric with the roof perimeter edges and spaced slightly inwardly therefrom; an endless sprinkler loop of cylindrically shaped tubing disposed above the roof and secured in position thereabove by passing through the ring-shaped holders on the stand-off brackets, the loop thus being concentric with the perimeter of the roof edges and passing completely thereabout; a series of sprinkler heads disposed about the loop and facing inwardly from the loop generally parallel to the roof, the sprinkler heads spaced from the roof, each of the sprinkler heads being in fluid communication with the loop tubing and mounted thereon to receive therefrom any substance flowing through the tubing, each sprinkler head having a face surface spaced furthest from the tubing; a series of L-shaped hollow couplers disposed about the loop in spaced relationship to each other, each coupler having one end in fluid communication with the tubing with the couplers extending outwardly from the tubing in a direction to project over the adjacentmost roof perimeter edge with their opposite end disposed generally parallel to the trailer sidewalls and opening downwardly from the roof; a plurality of sprinkler heads, each head associated with one of the couplers and affixed thereto in fluid communication therewith, each head having a face surface spaced furthest from the coupler; a plurality of nozzles mounted to the face surface of the first mentioned sprinkler heads in fluid communication therewith for directing a flow of any substance through the loop and sprinkler heads onto the roof, each of the nozzles being independent of each other and directed in a manner to completely cover the roof with their spray; a plurality of nozzles mounted to each of the face surfaces of each of the second mentioned sprinkler heads in fluid communication therewith for directing a flow of any substance through the loop and couplers and sprinkler heads onto the surfaces of the sidewalls, each of the nozzles being independent of each other and directed in a manner to completely cover the sidewalls with their spray; a tubular water feed line having one end connected to the sprinkler loop in fluid communication therewith, the water feed line running downwardly therefrom and terminating at is opposite end adjacentmost a lower portion of a sidewall forming the front of the trailer; a water shut-off valve operable between an open and closed position connected to the terminal end of the water feed line for controlling the flow of water therethrough; a hose bib connected to the free end of the water shut off valve adapted to have a water hose connected thereto for supplying a source of water thereto; a one-way check valve connected in the water feed line intermediate the shut-off valve and the sprinkler loop, the check valve permitting flow of water in the direction to feed the sprinkler loop while preventing any flow of any substance backward from the sprinkler loop into the water feed line; a carbon dioxide feed line of a tubular configuration having one end in fluid communication with the sprinkler loop and with its opposite end extending downwardly from the loop along a sidewall of the trailer and terminating at a position adjacentmost a lower portion of a sidewall defining the front surface of the trailer; a carbon dioxide reservoir tank containing a rechargable supply of pressurized carbon dioxide, the tank mounted on a sidewall of the trailer and connected in fluid communication with the free end of the carbon dioxide feed line; a carbon dioxide shut-off control valve operable between an open and closed position, the valve disposed adjacent the tank in the feed line for controlling the flow of carbon dioxide from the tank into the feed line; a one-way check valve connected in the carbon dioxide feed line intermediate the control valve and the sprinkler loop, the check valve restricting all flow through the feed line to be in the direction to feed the sprinkler loop while preventing any backflow of any substance from the sprinkler loop into the carbon dioxide feed line; whereby water can be directed into the system with the check valve in the carbon dioxide feed line preventing loss of water from the system therethrough, or carbon dioxide can be directed into the system with the check valve in the water feed line preventing loss of carbon dioxide from the system therethrough, or wherein a combination of both water and carbon dioxide can be simultaneously directed into the system for discharge through the nozzles.