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US 5,205,306 AGranted
Spraying equipment for removing hazardous materials from objects
OwnerMark D. Petersoninventor
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OwnerMark D. Petersoninventor
Estimating the term…
A decontamination system for rinsing hazardous materials from victims or suited emergency personnel using hand held thin flat octagonal rings of square aluminum tubing having a plurality of radially inwardly directed nozzles for simultaneously spraying water inwardly toward all sides of the part of a person at the center of the ring in a pattern from each nozzle which is wide but confined to about the thickness of the ring. Each ring has two external diametrically opposed sockets for receiving telescoping handles for spraying movement by one or two assisting persons, or it may be manipulated by a user for self-spraying by being hand held or by being pulled down around the user from an elevated horizontal position in which it is supported by elastic cords within a tent frame structure. Multiple rings for a method of decontamination spraying using a system having two different sets of multiple stations, reserved for emergency personnel and for victims, receive individually controlled supplies of water from one manifold having a single female inlet connector fitting different sizes of fire hose. Each spray station has a separate collecting receptacle and all stations of the two-set system are in a larger collecting pool created by placing a large plastic sheet over a fire hose in a closed loop on a flat surface. A person is moved through successive stations of one set with the first station having soap selectively added to the spray by a controlled mixing device connected to the manifold. All rings, telescoping handles and a manifold for one two-set system may be packed as a kit in a single flat square bag.
A flat spray ring device for removing hazardous materials including toxic, caustic or flammable materials from an exterior surface of an object or of a person comprising a manually supportable ring of tubing to conduct a cleaning liquid therein around its periphery, said ring being flat and lying between two parallel planes defined by opposite surfaces of the ring which define its thickness, said tubing having a surface facing radially inwardly generally toward the center of the ring, said ring device having only several holes and only several nozzles for discharge of cleaning liquid, said nozzles being attached to said tubing at said holes and located on and spaced around said surface and being inwardly oriented to direct their discharge in spray patterns toward the center of the ring, each nozzle having a centerline of its spray discharge pattern pointing essentially at a point centrally of the ring which is between said two planes, the spray patterns of the several nozzles being flat fan-patterned generally in the plane of the ring and providing a low rate of flow in a concentrated flat essentially peripherally continuous spray pattern on the surface of said object or person for impingement of cleaning liquid at all outwardly exposed surfaces of said object or person between said two planes, liquid connection means extending outwardly from the ring generally in the plane thereof for connecting a liquid supply hose to the ring, said device including means for manually supporting it during a cleaning operation, the maximum thickness of said device being essentially the same as the thickness of said ring tubing, the inside of the ring being large enough to encircle and enable spraying of the outer cylindrical surface of a standard fifty-five gallon drum, whereby the effluent cleaning liquid containing removed hazardous material is kept to a low quantity.
A liquid conducting device for connecting a water conducting system to male threads of a connector fitting of a conventional fire hose, said device comprising an outlet port means for connection to said system, an inlet port having means including a rotatable fitting having a relatively rotatable connection with the outlet port means to allow threading of said rotatable fitting onto the fire hose connector fitting, without rotating said outlet port means, and two different sized large diameter and small diameter coaxial concentric female threaded fitting connections in the rotatable fitting which enable the device to be directly connected to male threads of one or the other of two conventional fire hoses having two corresponding different sized threaded male fittings, the threads of the small diameter female threaded connection being radially and axially within, and of lesser axial length than, the threads of the large diameter threaded connection, said relatively rotatable fitting including means to prevent external leakage of cleaning liquid at said connections when the device is connected to a fire hose at either of the female threaded connections.
A flat spray ring for removing hazardous materials including toxic, caustic or flammable materials from an exterior surface of an object or of a person comprising a manually supportable ring of tubing to conduct a cleaning liquid therein around its periphery, said ring being flat and lying between two parallel planes defined by opposite surfaces of the ring which define its thickness, said tubing having a surface facing radially inwardly generally toward the center of the ring, said ring having only several holes and only several nozzles for discharge of cleaning liquid, said nozzles being attached to said tubing at said holes and located on and spaced around said surface and being inwardly oriented to direct their discharge in spray patterns toward the center of the ring, each nozzle having a centerline of its spray discharge pattern pointing essentially at a point centrally of the ring which is between said two planes, the spray patterns of the several nozzles providing impingement of cleaning liquid at all outwardly exposed surfaces of said object or person between said two planes, liquid connection means extending outwardly from the ring for connecting a liquid supply hose to the ring, said device including means for manually supporting it during a cleaning operation, the inside of the ring being large enough to encircle and enable spraying of the outer cylindrical surface of a standard fifty-five gallon drum, said nozzles being of a size to provide a liquid spray volume of flow of approximately 8 gallons per minute at a pressure of approximately 50 psi.
Dependencies are inferred from the claim text.