Abstract:
A dynamic water shield fire protection system and method is provided for continuously wetting roof and both external and internal wall surfaces of a building with running thin water films for protecting against an impending fire. Unlike conventional sprinkler systems in which water is sprinkled, in the present invention, specially designed nozzles with flat outlets spread flattened water flows at close range directly on the surfaces to protect against fire. Protected from wind, water flowing from adjacent individual nozzles merges into a uniform water film acting as a water shield to protect the surfaces from an impending fire. A drain assembly is installed longitudinally along the bottom of each water protected surface to collect the water running down, enabling water evacuation or recycling. Thus, a fire protection system is provided to protect a building from both exterior and interior impending fire.

Description:
PARENT CASE 
       [0001]    This application is a continuation of a provisional application entitled DYNAMIC WATER SHIELD PROTECTION SYSTEM; 
       Application No. 61/340,487 
       [0002]    Filing date: Mar. 18, 2010 
       REFERENCES CITED 
       [0003]      
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                   
               
               
                 U.S. Patent Documents 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 5,165,482 
                 November 1992 
                 Smagac 
               
               
                   
                 5,732,511 
                 March 1998 
                 Scott 
               
               
                   
                 6,450,264 
                 September 2002 
                 Christian 
               
               
                   
                 6,679,337 
                 January 2004 
                 Perry et al. 
               
               
                   
                 D524,407 
                 July 2006 
                 Crowley 
               
               
                   
                   
               
             
          
         
       
     
     
    
     BACKGROUND OF THE INVENTION 
       [0004]    1. Field of the Invention 
         [0005]    The present invention is related to fire prevention and extinguishing systems. More particularly, the invention pertains to a new water nozzle fire protection system for preventing a house, a building, or other structure from catching fire as a result of a nearby fire, or internal fire from spreading. 
         [0006]    2. Description of the Prior Art 
         [0007]    Properties, such as apartments, houses, office buildings, stores and warehouses have to be protected against fire. Many structures are protected from internal fires through an interior fire suppression system, such as an interior sprinkler system. However, sprinkler systems have the disadvantage of spreading water on furniture, electrical equipment, machines or goods. Moreover, the exterior of structures are often left unprotected from exterior fire threats such as direct flying fire from burning bush and direct or radiant heat generated from a fire in a neighboring building. 
         [0008]    During a fire emergency, due to threat of fire damage on properties such as apartments, houses, office buildings, stores or warehouses, the length of time of reaction to fight the fire is critical regarding the outcome of fire damage. Moreover, in a lot of cases, such as a wildfire, a multi structure fire or fire at a remote location, the resources available to local firefighters are often limited. So, in despair to save their properties, owners often take additional fire protective measures, such as garden hoses or lawn sprinklers, as common approaches to fight fire. Weak water pressure, impossibility to reach all places where the fire is spreading, high winds, heat and thick smoke make such attempts very dangerous and often inefficient because of the high risk of injury with life threatening wounds or burns. Other limitations for using garden hoses or lawn sprinklers are, first, the user has to be physically present at the site during impending fire or fire progression; second, lawn sprinklers and garden hoses are not useful in case of interior fires because of accessibility, water pressure and risk of toxic smokes or injury. 
         [0009]    Several approaches to create an exterior fire suppression system have proven to be impractical or not efficient. For example, U.S. Pat. No. 5,165,482, entitled “FIRE DETERRENT SYSTEM FOR STRUCTURES IN A WILDFIRE HAZARD AREA,” issued on Nov. 24, 1992, was designed to operate in a preemptive manner by detecting the impending approach of a wildfire within the vicinity of the structure to be protected. The system includes apparatus to identify the locus and direction of spread of a fire while it is outside of a defensive perimeter that encircles the structure and extends outward there from. Pre-wetting the structure and surrounding vegetation is supposed to reduce the probability of local fires caused by wind-borne embers and reduces the combustibility of these materials to assist fighting the fire. 
         [0010]    There is an approach described in U.S. Pat. No. 5,732,511 entitled “ROOF MOUNTED FIRE PROTECTION SYSTEM,” which was issued on Mar. 31, 1998. In this patent, a roof mounted fire protection system is adapted to be used in association with a house positioned upon a yard, the house having a pitched roof with an apex and a side wall. As others, using a plurality of sprinklers, this approach intends to fight impending fire by spreading water against the roof and walls. 
         [0011]    A similar approach was attempted in U.S. Pat. No. 6,450,264 entitled “SPRINKLER SYSTEM”, issued on Sep. 17, 2002. In this patent, a piping assembly is adapted to extend along a peak of a roof of a building and along an underside of eaves of the building and along a fence line; it also includes a shield assembly including an elongated shield member being adapted to extend along the peak of the roof of the building and also including shield support members being adapted to fasten to the roof of the building for supporting the elongated shield member; and further includes a water assembly being connected to the piping assembly for supply water to the piping assembly; and also includes a pump/control assembly being connected to the water supply assembly and the piping assembly for delivering water to the piping assembly. 
         [0012]    Another earlier approach described in U.S. Pat. No. 6,679,337, issued on Jan. 20, 2004 and entitled “WATER SPRINKLER FIRE PREVENTION SYSTEM”, describes a water sprinkler frame having a plurality of linear portions and including a plurality of sprayer nozzles extending radially from the pipe and out an associated opening in one of the faces of the heat shield. In operation, the nozzles function for spreading water therefrom upon the receipt thereof. 
         [0013]    The most recent and related approach to my invention is a proposed design described in U.S. Pat. No. D524,407, entitled “UNDER-EAVE FIRE SUPPRESSION SPRINKLER BANK”, which was issued on Jul. 4, 2006. In this design patent, the fire prevention system is an under-eave fire suppression bank supporting a linear pipe with a plurality of sprinklers spreading water on the surface of the house to be protected. 
         [0014]    These and other prior art approaches suffer from many drawbacks that have prevented the widespread implementation of fire suppression systems. They suffer from the fact that they use water spray, which is easily dispersible by the wind and requires high water pressure which is not often available during a fire emergency when several properties can be simultaneously threatened by fire. Another limitation of the other prior art approaches is that their installation is complicated and, more importantly, they do not protect both the exterior and the interior of the structures they are intended to protect against fire without damaging belongings inside. Not to mention that these systems are not aesthetically designed and once installed would be considered an eyesore in many communities. In addition, their pipes are exposed to the environment, which can lead to corrosion making the system not only unsightly, but also unreliable. Furthermore, many homes and other structures are designed with roofs having various shapes and slopes that are not contemplated by these limited systems. 
         [0015]    In view of all of these prior attempts in design of an efficient and aesthetic water system protection against fire, and the drawbacks in the prior art, there is a need for an improved exterior fire protection system. Furthermore, in light of existing prior art addressing either prevention of an exterior and prevention of an interior fire, there is a need for a fire prevention system to be able to prevent exterior and interior fires at the same time. 
         [0016]    It would be desirable for the system to be aesthetically pleasing and capable of effectively saturating the structure&#39;s exterior and interior surfaces using the water pressure that is available during a fire emergency. It would be further desirable for the system to be easy to operate without endangering the safety of the occupants and firefighters and inexpensive to install or retrofit into existing structures of various sizes and shapes. In these respects, the dynamic water shield fire protection system according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides a full system of apparatus primarily developed for the purpose of preventing a building from catching fire as a result of a nearby fire and/or an interior fire from spreading. In an alternate embodiment, the present invention can be utilized with other existing water based fire extinguishing systems such as ceiling sprinkler systems. The present invention may be adapted to prevent fire in any structure susceptible to be destroyed by fire such as wooden boats, or ships. It may also be adapted to aid in cooling structures in warm climate areas, and so, reduce the cost of air conditioning by providing a wet and uniform water film on the roof and walls. 
       BRIEF SUMMARY OF THE INVENTION 
       [0017]    In regard of the foregoing disadvantages in the previous types of the fire prevention and fire extinguishing systems now present in the prior art, the present invention provides a new and efficient water nozzles fire protection system construction wherein the same can be used for preventing a building from catching fire as the result of nearby fire or an interior fire from spreading, without flooding or damaging belongings inside the building. 
         [0018]    The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new dynamic water shield fire protection system and methods which have many of the advantages of extinguishing systems mentioned heretofore and many new features that result in which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art fire extinguishing systems, either alone or in any combination thereof. This is by mainly focusing on creating a thin and protective water film, rather than spreading water, to prevent fire. 
         [0019]    To attain this, the present invention generally comprises a pressurized water system, a fluidly interconnected network of longitudinal secondary water pipes and a plurality of nozzles. The pressurized water system, through a main water pipe, provides water under pressure to the secondary water pipes connected to a plurality of nozzles via connecting pipes. The nozzles are designed in such a way that the water flow is flattened to become a water film spreading on and covering the surfaces to be protected against fire. The pressurized water is brought to the integrated network of secondary water pipes by a main water pipe fluidly connected to a pressurized water supply system, wherein the pressurized water supply system may be a pump connected to a source of water supply such as a pool, tank, lake, river or other. It has to be noted that water supplies already delivered under pressure, such as fire hydrant, wet standpipe or house tap water supply, may be used as an alternative to a pump and water supply. In one preferred embodiment, a secondary water pipe, in fluid communication with the pressurized water supply system, is mounted along the edge of the roof, while for the protection of vertical walls, secondary water pipes are installed along the highest line of the wall surfaces. Both exterior and interior sides of vertical walls are protected by secondary water pipes installed using the same apparatus on both sides of wall surfaces. The nozzles connected perpendicularly to the secondary water pipes are oriented in such a way that the water flow coming out from the nozzle outlets is spread on the roof and on the walls as a water film. Water flooding is prevented in the interior compartments by a horizontal wall-gutter, connected to the exterior or to the evacuation plumbing system along the bottom of the interior side of each wall. Horizontal wall-gutters may be installed also at the bottom of exterior sides to collect also water coming down wall exterior surfaces. Redirected to a water stock such as a tank or a pool, the water can be recycled to be reused over again. Such water recycling option is particularly interesting in environments with limited water resources. 
         [0020]    The water supply system may be connected to fire detectors placed inside and outside the house to automatically supply pressurized water to the integrated network of pipes connected to the plurality of nozzles spreading the water film. These detectors are connected to a control box for transmitting fire signals thereto upon the detection of signals greater than a predetermined point to trigger the activation of the pump or other present water supply system or a sound alarm. A filter screen may be installed inside the intake end of the vertical main pipe to prevent clogging of the system by debris or particles from the water supply. Finally, a plurality of valves, controlling the water flow and placed at selected locations, may be installed inside the water pipes and connected to the control box for bringing pressurized water only to the areas where it is needed and so, reduce the amount of the water to be used. 
         [0021]    There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present description of the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims. 
         [0022]    In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of the construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is able of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for purpose of description and should not be regarded as limiting. As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for design of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
         [0023]    Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art of who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way. 
         [0024]    It is therefore an object of the present invention to provide a new dynamic water shield fire protection system and method which has many of the advantages of the fire extinguishing systems mentioned heretofore and many novel features that result in a new dynamic water shield fire protection system which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art fire extinguishing systems, either alone or in any combination thereof. It is a further object of the present invention to provide a new dynamic water shield fire protection system which is of a durable and reliable construction. 
         [0025]    An even further object of the present invention is to provide a new dynamic water shield fire prevention system which is susceptible of a low cost of manufacture with regard to both material and labor, and which accordingly is then susceptible of low cost prices of sale to the consuming public, thereby making such dynamic water shield fire protection system economically available to the buying public. 
         [0026]    These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out particularly in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be made to the accompanying drawings and descriptive matter in which there are illustrated preferred embodiments of the invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0027]    The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein: 
           [0028]      FIG. 1  is a schematic general view of the principle of the present invention. 
           [0029]      FIG. 2  is a schematic perspective view of installed water pipes of the dynamic water shield fire protection system on a house. 
           [0030]      FIG. 3  is a schematic top view of installed pipes of the dynamic water shield fire protection system on a roof. 
           [0031]      FIG. 4  is a schematic view of the dynamic water shield fire protection system installed on a typical two floor building with a flat roof (A) or a hipped roof (B). 
           [0032]      FIG. 5  is a schematic diagram depicting the location of valves inside the vertical main water pipe and the secondary water pipes. 
           [0033]      FIG. 6  shows detailed views of a wall-nozzle. 
           [0034]      FIG. 7  shows supplementary detailed views of a wall-nozzle. 
           [0035]      FIG. 8  is a perspective view of a portion of a linear flat shield. 
           [0036]      FIG. 9  is a side cross-section of a linear flat shield. 
           [0037]      FIG. 10  shows perspective (A) and cross-section perspective (B) views of a wall-nozzle plate support. 
           [0038]      FIG. 11  is a side cross-section view of a wall-nozzle plate support. 
           [0039]      FIG. 12  shows the steps of mounting of a wall-nozzle to a linear flat shield. 
           [0040]      FIG. 13  is side view (A) of an installed wall piping assembly and an enlarged view (B) of the embodiment of a wall-nozzle anchored to a linear flat shield via a wall-nozzle plate support. 
           [0041]      FIG. 14  is side view (A) and perspective view (B) of an installed wall piping assembly with a linear flat shield (transparent). 
           [0042]      FIG. 15  is a perspective view (A) of a portion of installed wall piping assembly showing the linear flat shield and the same view with a hole in the linear flat shield to show the connection of wall-nozzles to a longitudinal secondary water pipe (B). 
           [0043]      FIG. 16  is a view of an installed wall piping assembly on exterior (A) and interior (B) sides of a wall with an enlarged view of a drain assembly (C). 
           [0044]      FIG. 17  is a perspective view of a dynamic water shield protection system installed inside a room. 
           [0045]      FIG. 18  shows embodiment of wall-nozzles on a secondary water pipe mounted horizontally (A and C) and non-horizontally (B and C). 
           [0046]      FIG. 19  is a perspective view of a portion of a longitudinal linear curved shield. 
           [0047]      FIG. 20  is a side cross-section view of a portion of a longitudinal linear curved shield. 
           [0048]      FIG. 21  shows side view (A) and perspective view (B) of an installed wall piping assembly with a linear curved shield (transparent). 
           [0049]      FIG. 22  is a perspective view (A) of a portion of installed wall piping assembly with linear curved shield and the same view with a hole in the linear curved shield to show the connection of wall-nozzles to a longitudinal secondary water pipe (B). 
           [0050]      FIG. 23  shows detailed views of a roof-nozzle to be used for roofs and inclined surfaces. 
           [0051]      FIG. 24  shows supplementary detailed views of a roof-nozzle to be used for roofs and inclined surfaces. 
           [0052]      FIG. 25  shows perspective (A) and side (B) views of the portion of an installed roof piping assembly while C is a diagram illustrating the connection of roof-nozzles to a secondary water pipe. 
           [0053]      FIG. 26  is perspective view of a portion of an installed roof piping assembly and the connection of the roof secondary water pipe to wall secondary water pipes. 
           [0054]      FIG. 27  is a schematic side section view of a house depicting an embodiment of the dynamic water shield fire prevention system with the location and position of the vertical pipe, wall piping assembly and roof piping assembly (A) with enlarged view of a wall piping assembly (B) and a roof piping assembly (C). 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0055]    With reference now to the drawings, and in particular to  FIGS. 1 through 27  thereof, a dynamic water shield fire protection system embodying the principles and concepts of the present invention will be described. 
         [0056]    To help better understand the present dynamic water shield fire protection system, it will be described in the following order: First, the description will paint the fundamental principle of the invention followed by a panoramic and general description of its embodiment in a building. Second, the nozzles used in the present invention for walls will be described in detail followed by the description of their installation in an example of an embodiment. Third, the nozzles used in the present invention for roofs will be described in detail followed by the description of their installation in an example of an embodiment. Finally, in the last part of the description, a general view of a house with a full embodiment of all parts of the invention will be described to highlight their relative locations and functions during operation. 
         [0057]    The fundamental principle of the present invention is that, rather than being spread as a shower in the air or against surfaces, the water is brought directly on the surfaces as a moving water film serving as a shield to protect surfaces from catching fire or as extinguisher. The water film being already on the surface, it is less dispersible by wind. Thus, the present invention is particularly adapted for threatening fire in a windy environment. More, for vertical surfaces such as walls, because the water film runs directly on the surface, it can be easily recovered with a drain piping system installed horizontally at the bottom. Thus, the used water can be recycled and reused again. Furthermore, because the water is not spread under pressure with sprinklers as a shower but by gravity as a water film directly on surfaces to protect, the amount of water and the pressure of water necessary to cover a given surface are lowered. These are being two critical parameters for fighting fire during a fire emergency where several properties could be threatened by an impending fire. Finally, combined with a drain piping system, the use of water film, rather than water shower, gives to the present invention the possibility to protect both interior and exterior of a building without damaging belongings in the interior compartment and without important modification of their existing appearance. 
         [0058]    Thus, as summarized in  FIG. 1 , pressurized water, depicted by the black arrow, is forced up inside a main water pipe  1  connected to a longitudinal secondary water pipe  2  that is mounted along the highest line of the wall  6  surface to protect. A plurality of wall-nozzles  4  (only three are shown in  FIG. 1 ) are connected to the longitudinal secondary water pipe  2 , via a plurality of connecting pipes  3 , at spaced locations and with their flattened outlets oriented parallel and toward the wall surface to spread the water therefrom upon the receipt thereof as multiple flat water flows merging together to form a uniform water film shield  5  preventing the wall surface from catching fire. It has to be noted that in an alternative embodiment, the plurality of connecting pipes  3  connected to nozzles  4  can be replaced with only a plurality of connecting pipes with flat outlets. In such embodiment, the connecting pipes  3 , connected to the secondary pipe  2 , spread the water without the need for nozzles  4 . In an another alternative embodiment, both options of secondary pipes  2  coupled to connecting pipes  3  with and without nozzles  4  may be combined. 
         [0059]    Same embodiments are adapted for the protection of inclined surfaces such as roofs with the nozzle  4  or connecting pipe  3  outlets oriented toward the inclined roof surface and parallel to the eaves. 
         [0060]    In a preferred embodiment, when the system is mounted on a house, as shown in  FIG. 2 , a water pump  7  brings pressurized water to a main water pipe  1  in fluid communication with a network of secondary water pipes  2  installed along the crest of the roof and along the highest line of each vertical wall. Alternatively, the main water pipe  1  may be connected to any pressurized water supply such as a municipal water supply. Pressurized water circulating in the longitudinal secondary linear pipes  2 , depicted by the thin black arrows, is spread against the walls and the roof, through a plurality of nozzles, depicted by the white arrows. Thus, an installed water shield fire protection system can cover potentially all the surfaces of a house with a water shield against an exterior impending fire. It has to be noted, as it will be further described below, that the system may be adapted to cover also the interior wall surfaces of a house and thus prevent interior fire threat.  FIG. 3  shows an embodiment of the present dynamic water shield fire protection system on the top of the roof of a house depicting the circulation of the water in the secondary water pipes  2  from the main water pipe  1 , depicted by the black arrows, and the location of the plurality of nozzles spreading water as depicted by the white arrows. 
         [0061]    The present dynamic water shield fire protection system is adaptable also to protect other types of buildings against fire.  FIG. 4  shows an embodiment of the system installed in a building with a flat roof (A) or with a hipped roof (B) and two floors. The circulating pressurized water, depicted by the thin black arrows, in the longitudinal secondary linear water pipes  2  that are connected to a plurality of nozzles, depicted by the white arrows, is spread against the walls and the roof, covering thus potentially all exterior surfaces of the building with a water film against an impending fire. It has to be noted also again that the system may be adapted to cover the interior wall surfaces of a building. In a preferred embodiment, valves connected to a control assembly may be installed inside the main water pipe  1  and in the secondary water pipe  2  to direct the water only to the nozzles at specific locations as illustrated schematically by  FIG. 5  depicting a three floor building. Thus, valves  8  in the main water pipe  1  would determine the floor of the building to bring the water to the spreading nozzles while valves  9  in the secondary water pipes  2  would determine which location in a given floor of the building water will be brought to the spreading nozzles. 
         [0062]    After describing an embodiment of pipes distributing pressurized water to different locations of a house or a building, nozzles used for wall water coverage will be described in detail. Thus,  FIGS. 6 and 7  show different detailed views of a wall-nozzle where  FIG. 6A  depicts a top front external view of the nozzle with a female thread end  10  for inlet connection to a secondary water pipe, through a connecting pipe. A back-anchor  11  is designed for the anchoring of a wall nozzle to a longitudinal linear flat or curved shield while the flattest part of the nozzle ends with the outlet of the nozzle  12 . In alternative, the neck of the nozzle can be bent to facilitate the connection to a connecting pipe.  FIG. 6B  is a transparent view of a wall-nozzle  4  showing inside to reveal the disposition of directional blades  13  to direct the water flow, coming from the neck of the nozzle, to be distributed equally on all the internal surface of the nozzle, and water exiting out its outlet  12  as depicted by the arrows in the  FIG. 6C . As shown in  FIGS. 6B ,  6 C and  6 F, the internal directional blades  13  are disposed radially in the flat part of the nozzle from the cylindrical neck to the outlet of the nozzle.  FIG. 6D  shows a front view of a wall-nozzle depicting the female thread  10  of the nozzle inlet, the flatness of its outlet  12  and the location of the back-anchor  11  while  FIGS. 6E and 6F  are perspective exterior rear view depicting the location of the back-anchor  11 .  FIG. 6F  is also a perspective rear transparent view depicting the disposition of the directional blade  13  and location of the back anchor  11 . For a better description of a wall-nozzle, and the role of the directional internal blades, front and side views are presented in  FIG. 7 .  FIG. 7A  illustrates a perspective external view of a wall-nozzle  4  depicting the female thread end  10  and the back-anchor  11  while  FIG. 7B  illustrates a transparent perspective view of the nozzle to reveal the size and the radial disposition of the internal directional blades  13  ( 13   a - 13   d ). The layout of the blades is depicted in  FIG. 7B  and their effect on water flow is shown in  FIG. 7C . During operation when the water flow enters in the cylindrical neck of a wall-nozzle, it is separated into two secondary water flows by a primary directional-blade  13   a  positioned starting right at the end of the neck. These secondary water flows are themselves separated into four tertiary water flows by two secondary directional-blades  13   b . Downstream, the four tertiary water flows are separated into eight quaternary water flows by four tertiary directional-blades  13   c . Finally, the quaternary water flows are separated by quaternary directional-blades  13   d  into sixteen smaller water flows exiting from the nozzle to be spread on the wall to protect from fire. Alternative design could include a lower or greater number of directional-blades to be adapted to particular embodiments.  FIGS. 7D to 7F  show side views of a wall nozzle depicting its progressive flatness from the cylindrical and curved neck inlet end with a female thread  10  to the flat outlet  12 , the location of the back-anchor  11 , shown in  FIG. 7D , the size and shape of the internal directional blades  13 , shown in  FIG. 7E  and the flow of the water shown in  FIG. 7F . 
         [0063]    Wall-nozzles are mounted behind longitudinal linear shields serving decorative as well as support purpose. Two types of linear shields may be used in different embodiments: a linear flat shield and a linear curved shield.  FIG. 8  shows a portion of a linear flat shield  14  and depicts a longitudinal track  15  to enable the mounting of wall-nozzles as it will be described in detail later and a hole with a threaded fastener  16  to enable attachment to a ceiling.  FIG. 9  is a side cross-section view to depict the triangular-shape of the flat linear shield  14  and the angle of the hole for the threaded fastener  16  to be used for attachment to a ceiling. For mounting a wall nozzle on a linear flat shield or on a linear curved shield, a wall-nozzle plate support is used. As illustrated in  FIG. 10 , a wall-nozzle plate support  17  is a plate with flat surface and being slightly bent lengthwise with, in the back, a cylindrical neck with a central hole  18  crossing through and a circular foot that is to be used to attach the plate with a threaded fastener  19  to a linear shield.  FIG. 10A  is a perspective view depicting the shape of a wall-nozzle plate support and the lower central location of the hole to enable its installation. A perspective cross-sectional view is shown in  FIG. 10B  to highlight the location of the rear neck and the circular base crossed by the hole  18 .  FIG. 11  shows a side cross-section view of a wall-nozzle plate support  17  with a hole  18  crossing through the cylindrical neck and the circular base. 
         [0064]    After being described separately, the assembly and adjustment of a wall-nozzle on a longitudinal linear flat shield, using a wall-nozzle plate support is illustrated in  FIG. 12 . Thus, in  FIG. 12A  are shown a portion of a linear flat shield  14 , with its longitudinal track  15  and a hole with a threaded fastener, a wall-nozzle plate support  17  with the hole  18  for the threaded fastener  19 , and a wall-nozzle  4 . A sequence of the assembly could be the following; first, the wall-nozzle plate support  17  is mounted on the longitudinal linear flat shield  14  as illustrated in the  FIG. 12B . The circular base of the wall-nozzle plate support  17  is dragged along the internal face of the linear flat shield  14  by using the longitudinal directional track  15  as depicted by the horizontal black arrows. Upon reaching the right position, a threaded fastener  19  is introduced in the hole  18  of the wall nozzle plate support  17 . The orientation of the wall nozzle plate support  17  is then adjusted by rotating clockwise or counterclockwise, as depicted by the semi circular black arrows, and firmly secured with a threaded fastener  19 . The last step is to anchor the wall-nozzle  4  to its wall-nozzle plate support  17  as shown in  FIG. 12C . Depending on the length of the wall to be protected, the process is repeated as necessary for each wall-nozzle  4  to fully and efficiently cover all surface of the wall. 
         [0065]    After connection to a secondary water pipe, through connecting pipes, the linear flat shield  14  carrying a plurality of nozzles is attached to the ceiling with a plurality of threaded fasteners  16 . It has to be noted that such sequence of embodiment of the wall-nozzles  4  to the linear flat shield  14  is the same for the curved linear shield  23  which is described later starting on  FIG. 19 , and is adaptable to that particular embodiment.  FIG. 13A  shows a side view of wall piping assembly mounted on a wall  6  and a ceiling  22 , including a secondary water pipe  2  secured on the wall  6  by supports  20  attached to the wall with threaded fasteners  21 . The linear flat shield  14 , supporting the wall-nozzles  4 , is attached to the ceiling by a plurality of threaded fasteners  16 . The layout of a wall-nozzle  4  anchored to a wall-nozzle plate support  17  mounted on the longitudinal linear flat shield  14  is detailed in a partial enlarged view, shown in  FIG. 13B . In this view, the wall-nozzle  4  with its back anchor  11  anchored to a wall-nozzle plate support  17  secured to the flat linear shield  14  by a threaded fastener  19 . For a better understanding of this embodiment, two views are shown in  FIG. 14  where  FIG. 14A  is the same as the previous view in  FIG. 13A  but showing the water flow that is coming from wall nozzles  4 , is spread on the wall  6  here as a water film  5 .  FIG. 14B  is a perspective view of the same embodiment with a flat linear shield  14  transparent to depict two wall-nozzles  4  connected to the secondary water pipe  2 , attached to the wall by supports  20 , and the water protecting film  5  descending along the wall  6 . The aesthetic of the present dynamic water protection system is depicted in  FIG. 15 . Thus, as shown in  FIG. 15A , the longitudinal linear flat shield  14 , as its decorative part of feature, hides from view, except the protecting water film  5 , an installed wall piping assembly. The view in  FIG. 15B  is the same view but with a hole in the longitudinal linear flat shield  14  to show how the elements of the system are mounted behind it. 
         [0066]    The present dynamic water shield protection system is designed for the protection of both the exterior and interior compartments of a building by covering both side surfaces of each wall.  FIG. 16  is a perspective view of an example of an embodiment of the dynamic water shield fire protection system on a wall showing a portion of its installation on both sides of a wall  6  without the ceiling or roof in order to facilitate the view. During operation, pressurized water, from a pump or other means, is injected into the main water pipe  1  and oriented in secondary water pipes  2  attached along the highest line of both sides of the wall  6 . The water is then driven toward the wall-nozzles  4  (only three on both side are shown), that are anchored to linear flat shields  14 , and spreads on the surfaces of the wall  6  as a descending water film  5 . Unlike for the exterior compartment (A), for the interior compartment (B), a wall-gutter  24  is installed along the bottom of the interior wall face to prevent flooding by driving the descending water towards outside or into the building evacuation plumbing system through an evacuation wall-gutter  25  as shown in an enlarged detailed view in  FIG. 16C . The evacuated water may be recycled and reused in a loop for fighting the fire or for further use. In this perspective, the wall-gutter may be installed along exterior wall faces also to collect water used to protect exterior walls. Such embodiment is for adapting to situations where the availability of water is reduced. 
         [0067]    It has to be noted that this schematic illustration is for informational purpose only. Thus, the vertical main water pipe  1  should be positioned exteriorly on the side the wall to enable a connection of a pump or other pressurized water source. Further, it has to be noted also that shape or design of the wall-gutter  24  should be more flat to be more aesthetic and discrete. Thus, as shown in  FIG. 17 , once installed inside a room, the system would not be visible except as longitudinal plates, which are the backs of the linear flat shields  14 , at the top of the wall, and discrete longitudinal wall-gutters  24  at the bottom of the walls. 
         [0068]    The embodiment including the secondary water pipe connected to a plurality of wall-nozzles can be adapted for horizontal and inclined installations. In horizontal embodiment, as shown in  FIG. 18A , the wall-nozzle  4  is mounted vertically and thus the water flow will be spread vertically. In a non-horizontal embodiment, as shown in  FIG. 18C , the wall-nozzle  4  is still mounted vertically on a linear flat shield  14  mounted with an a angle along of a surface. Thus, even in this inclined embodiment, the water flow from a wall-nozzle will be spread vertically as in the case of a horizontal embodiment.  FIGS. 18C and 18D  are schematic illustrations of a portion of a linear flat shield with several wall-nozzles, depicted as black triangles, in horizontal and inclined embodiments respectively. The orientation of wall-nozzles is achieved as described above in  FIG. 12 . 
         [0069]    For outside installation of a wall piping assembly, a longitudinal linear curved shield is designed with a curved section to enable a better protection of the installed wall piping assembly from the weather. Moreover, in contrary with longitudinal linear flat shield, the installation of a wall piping assembly with longitudinal linear curved shield does not require a ceiling and thus is adapted for exterior walls. It has to be noted that a longitudinal linear curved shield may be installed also on interior walls.  FIG. 19  shows a portion of such a longitudinal linear curved shield  23  and its side cross-section view is shown in  FIG. 20 , depicting a longitudinal track  15  to enable the anchoring of a wall-nozzle, as described above in detail and its curved or concave shape covering the wall piping assembly and enabling attachment to a wall. Thus, a plurality of holes at the top of the longitudinal linear curved shield enables a direct attachment to a wall with threaded fasteners  16 .  FIG. 21  shows a wall piping assembly with a linear curved shield installed over it on an exterior wall.  FIG. 21A  is a side view depicting the layout of the members of a wall piping assembly showing a wall-nozzle  4  anchored to a longitudinal linear curved shield  23  attached to a wall  6 . 
         [0070]    The wall-nozzle  4  is fluidly connected to the secondary water pipe  2 ; the secondary water pipe is attached to the wall via a plurality of supports  20 ; the supports are secured to the wall  6  by threaded fasteners. The wall-nozzle  4  connected to the secondary water pipe  2  spreads the water against the wall  6  as a thin descending water film  5 .  FIG. 21B  is a perspective view of the same embodiment with a linear curved shield  23  in transparent view to depict the connection of the wall-nozzles  4  to the secondary water pipe  2 , and the water protecting film  5 . As with a longitudinal linear flat shield, a longitudinal linear curved shield is designed to have dual roles: a decorative and a supportive. Thus, as shows in  FIG. 22A , when it is installed, a longitudinal linear curved shield  23  completely hides from view a wall piping assembly mounted on a vertical wall  6 . Only the covering water film  5  is visible when the system is activated. The view in  FIG. 22B  is the same view but with a hole in the longitudinal linear curved shield  23  to show how the elements of the system are hidden behind it. 
         [0071]    For inclined surfaces such as roofs, a special nozzle is designed as depicted in  FIGS. 23 and 24 .  FIG. 23  shows different detailed views of a roof-nozzle  26  where  FIG. 23A  depicts a top front external view of the nozzle with a female thread end  10  for inlet connection to a secondary water pipe. As with a wall-nozzle, the outlet end  12  is flat part of the nozzle and the neck of the roof-nozzle  26  can also be curved in such way to enable a better connection to connecting pipe.  FIG. 23B  is a transparent view of the body of a roof-nozzle  26  showing inside to reveal the disposition of directional blades  13  to orient the water flow, coming from the inlet neck of the nozzle, on all the surface of the nozzle outlet  12  as indicated by the arrows in the  FIG. 23C . As with a wall-nozzle described previously above, the directional blades  13  are positioned radially in the flat part of the nozzle from the cylindrical neck to the flat outlet  12  of the nozzle and direct the water flow in the same way.  FIG. 23D  shows a front view of a roof-nozzle depicting the flatness of its outlet  12  while  FIG. 23E  is a rear view of a roof-nozzle depicting the progressive flattening of the nozzle from the cylindrical inlet to the V-shape flat part and the position of the inlet female thread  10 .  FIGS. 24A to 24C  are perspective views of a roof-nozzle depicting its V-shape, and position of the inlet female thread  10 . The radial disposition of the internal directional blades  13  is shown in transparent view in  FIG. 24B  and the water flow circulation inside the nozzle is shown in  FIG. 24C .  FIGS. 24D to 24F  show side views of a roof-nozzle  26  depicting its progressive flatness from the cylindrical and curved neck inlet end with a female thread  10  to the flat outlet  12  and the size and shape of internal directional blades  13  designed as  13   a  for the primary directional blade,  13   b  for secondary directional blades,  13   c  for tertiary directional blades and  13   d  for quaternary directional blades. The respective roles of these directional blades are the same as described previously above for a wall-nozzle. Therefore, except for the orientation of their cylindrical inlet neck, a wall-nozzle and a roof-nozzle share the same external and internal design characteristics. However, in the case of the wall-nozzle the cylindrical inlet end is oriented toward the outlet of the nozzle while, in the case of the roof-nozzle, this inlet end is oriented in opposite direction of the outlet of the nozzle. Finally, only a wall-nozzle has, on the back, a back-anchor  11  enabling its hanging to a longitudinal linear shield as described above while roof-nozzles rest on the roof when they are mounted. 
         [0072]    In ideal embodiment, as shown in  FIG. 25 , roof-nozzles  26  are connected alternatively and perpendicularly to a secondary water pipe  2 . The roof-nozzles  26  are oriented outwardly along both sides of the edge of the roof  27  in such a way that the water spray from each nozzle merges with the water spray from the adjacent nozzle to form a water film  5  on surfaces of the roof  27 .  FIG. 25A  shows a close perspective view of a portion of a secondary water pipe  2  installed at the crest of a roof and connected to three roof-nozzles  26  and the protecting water film  5  from two adjacent roof-nozzles  26  on one side. Shown also is a conventional top covering longitudinal elongated shield  28  which shields the roof piping assembly.  FIG. 25B  is a side view of a roof piping assembly installed on the crest of a roof depicting the layout of the members of the assembly. It should be noted that the outlet ends of the roof-nozzles  26  are in contact with the surface of the roof  27  in such way that the water directly spreads on the roof.  FIG. 25C  is a diagram illustrating the central position of the secondary water pipe  2  connected perpendicularly to a plurality of roof-nozzles  26  mounted alternatively on both sides along the crest of the roof.  FIG. 26  shows a close perspective view of a portion of a roof piping assembly depicting a conventional longitudinal cover shield  28  and a curved connector  29  enabling a fluid communication of the secondary water pipe  2 , installed on the roof, to secondary water pipes  2  located on the wall under-eave of the roof  27 . 
         [0073]    The different parts and assemblies of the present dynamic water shield fire protection system thus described, this section will be focused on a general embodiment on a typical house to give a panoramic view of the invention. Thus,  FIG. 27  shows a general partial side cross-section view of a house summarizing a preferred embodiment of the present fire prevention system invention and the location of mounted components.  FIG. 27A  illustrates a disposition of wall-nozzles mounted horizontally and non-horizontally as depicted by the white arrows. As shown, in both case, the orientation of the wall-nozzles is always vertical and directed downwardly. During operation, a pump  7  or any water supply system forces up the water to the vertical main water pipe  1 . The pressurized water flow is oriented to longitudinal secondary water pipes  2  positioned longitudinally along the crest or ridge of the roof and along the highest line of both sides of each vertical wall  6 . Connecting pipes enable the delivery of the pressurized water to a plurality of nozzles oriented in such way that the water flows from adjacent nozzles are merged into a water film spreading on the roof  27  and the wall  6 . For the aesthetic purpose, as previously described above, the mounted wall-nozzles are hidden behind a linear flat shield  14 . Flooding of the interior compartment by the descending water film  5  is prevented by a wall-gutter  24 , placed horizontally along of the bottom of the interior side of the house walls and connected to the exterior by an evacuation pipe  25 . Such evacuation pipe  25  may be connected to the evacuation plumbing of the house or the building. In an ideal embodiment, when the water source is limited such as to a pool or a tank, the evacuation pipe  25  may be redirected to the water source. For the exterior side of the wall  6 , a plurality of wall-nozzles  4 , connected to a secondary water pipe  2 , are hidden behind a linear curved shield  23 , as shown in an enlarged view in  FIG. 27B . The embodiment on the roof is depicted in an enlarged side view in  FIG. 27C . The secondary water pipe attached to the crest of the roof, hidden on the figure by the curved connector  29 , is connected perpendicularly to the inlets of a plurality of roof nozzles  26  through connecting pipes. The flat outlets of the roof nozzles  26  are placed on the roof to enable easy and efficient water spread in such way that the water flows from all roof nozzles  26  merge to form uniform thin water film  5  covering the entire surface of the roof  27 . A conventional covering, longitudinal elongated shield,  28  is mounted along the ridge of the roof  27  and over the roof piping assembly to shield the roof piping assembly. In this preferred embodiment, the flow of water in the system may be controlled by an electrically operated valve  30  which is in turn controlled by a central command assembly  31 . The pressurized water being supplied by a pump  7  connected to a water supply, by a fire hydrant, wet standpipe or conventional water tap supply system. The central command assembly  31  and the valve  30  may be the same as those commonly employed on automatic sprinkler systems. Such system can be automatically and remotely activated for preselected times or by heat for inside and outside use ideally placed and sending signals to the central command assembly  31  to deliver pressurized water only to nozzles located in the building where an impending fire is threatening. It should be noted that the fire protection system can also be turned on and off manually by a one-way valve installed above the inlet of the main water pipe  1 . 
         [0074]    Having thus described a preferred embodiment of the present invention, it should be apparent to those skilled in the art that certain advantages of the system have been achieved. For example, most of the components of the dynamic water shield fire protection system described herein are installed in a manner that provides protection from the external and internal environments when the system is inactive, thus reducing corrosion and increasing reliability. It should also be appreciated that various modifications, adaptations, and alternative embodiments thereof may be made within the scope and spirit of the present invention. For example, it is contemplated that various combinations of the embodiments described herein may be merged into one or more systems. It is also contemplated that the present dynamic water shield prevention system can be implemented in any structure in any environment, including city, suburban, rural environments and boats. As to the manner of usage and operation of the present invention, the same should be apparent from above description. Accordingly, no further discussion relating to the manner of usage and operation will be provided. 
         [0075]    With respect to the above description then, it is to be realized that the optimum dimensional relationships for the part of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed in the present invention. Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalent may be resorted to, falling within the scope of the invention.