Enclosure System with Perforated Patterned Panels

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application No. 63/686,574 filed on Aug. 23, 2024, the subject matter of which is herein incorporated by reference in its entirety.

FIELD OF THE INVENTION

The present invention relates to assemblies, component parts, and methods that are useful for enclosing decks, outdoor building structures, and outdoor utility equipment, including propane tanks, garbage cans, air conditioner equipment, generators, and other utility structures.

BACKGROUND OF THE INVENTION

Wildfires have become an increasing concern in many areas. Wildfires that burn near communities can be dangerous, particularly if uncontrolled. In Wildland Urban Interface (or WUI areas), homes and other nearby structures may be especially vulnerable to wildfires due to their proximity to forested areas.

Elevated decks and other building structures may be particularly susceptible to wildfires. During a wildfire event, embers can easily travel underneath the building structures, igniting combustible materials such as dry grass, leaves, and debris. Such exposure may put nearby homes and buildings at significant risk.

In addition, housing developments, such as those located within rural areas, often have propane tanks, garbage cans, air conditioner equipment, and other utility equipment placed near housing structures. When located within close proximity to a residence, such equipment can detract from the appearance of the home and surrounding property. Another concern of having propane tanks and other utility equipment placed near a housing structure is the desire to keep combustible debris and other unwanted material away from the equipment. The dangers of wildfires highlight the possible damage that such events could pose to exposed propane tanks and other utility structures. Indeed, wildfire safety organizations recognize propane tanks as primary fire threats to homes located within wildfire prone areas (or WUI areas).

Mitigation recommendations for propane tanks include relocating tanks to a location outside, such as approximately thirty feet (30′) from structures, direct burial of the tank or constructing a non-combustible enclosure around the tank, such as a vented cinder block enclosure. Further, it is recommended that an area of approximately five feet (5′) around the tank be kept free of any vegetation, debris or other flammable materials.

While it is possible for propane tanks to explode during a wildfire event, explosions are not the only concern for propane tanks. Propane tanks include a high pressure blow-off valve located on the top of the tank. This valve is designed to relieve internal tank pressure that can be caused by external heat, such as a wildfire. When active, the valve releases air and fuel that can be ignited by a surrounding flames. This flaming stream of propane can shoot into the air as high as thirty feet, setting surrounding vegetation and structures ablaze.

Accordingly, there exists a need for a system that addresses some or all of the foregoing fire safety issues. In particular, there exists a need to protect elevated decks and other building structures, and propane tanks and other utility equipment from wildfires risks. There exists a need to reduce or prevent the accumulation of embers and flammable debris and other materials under elevated decks and other building structures. There also exists a need to keep debris and other heat sources away from propane tanks and other utility equipment. In addition, it would be desirable to have a system to help to safe guard homes and provide fire protection to outdoor spaces.

BRIEF SUMMARY OF THE INVENTION

Apparatuses and methods useful for keeping sources of heat away from building structures, such as elevated decks, and utility structures, such as propane tanks, are disclosed. The apparatuses and methods are useful in addressing wildfire risks by enclosing the perimeter of the structure with one or more perforated patterned panels. Such enclosure systems may help to reduce the accumulation of dangerous, flammable materials and keep embers away. In areas such as the Wildland Urban Interface (WUI), where homes and other building structures are especially vulnerable to wildfires due to their proximity to forested areas, the disclosed enclosure systems may play an important role in reducing the risk of fire damage. In addition to fire protection, the described enclosure systems may help to maintain the structural integrity and appearance of the enclosed structures.

In one embodiment, a substantially rectangular panel comprises alternating raised and lower surfaces extending along a length of the panel. The lower surfaces each comprise a plurality of perforations. In some embodiments, the lower surfaces each comprise a plurality of perforations disposed in a series of repeating perforation segments to form a lattice pattern on the panel. In other embodiments, the lower surfaces each comprise a plurality of perforations disposed in a repeating pattern along a length of the lower surface to form a slat pattern on the panel. A flashing skirt may be attached to a bottom portion of the panel. In addition, the panel may be connected to a trim component along a top edge of the panel. Also described is a deck enclosure system formed from a plurality of the substantially rectangular panels disposed around an elevated deck.

A method for enclosing an elevated deck includes the step of joining a plurality of substantially rectangular panels around an elevated deck. Each panel comprises alternating raised and lower surfaces extending along a length of the panel. The lower surfaces each comprise a plurality of perforations. In some embodiments, the lower surfaces each comprise a plurality of perforations disposed in a series of repeating perforation segments to form a lattice pattern on the panel. In other embodiments, the lower surfaces each comprise a plurality of perforations disposed along a length of the lower surface to form a slat pattern on the panel. A flashing skirt may be attached to a bottom portion of at least one of the panels. In addition, a top edge of at least one panel may be connected to a trim component.

The described perforated patterned panels may also be useful in enclosure systems for propane tanks and other utility structures. In the case of wildfire or other fire events, the perforated patterned panels may form an enclosure around a propane tank to help keep burning embers or other heat sources away from the enclosed propane tank. Panels with other types of perforation patterns may also be used. The inclusion of moveable enclosure body components allows access to the enclosed utility structure to facilitate maintenance and repair.

Thus, also disclosed is an apparatus comprising an elongated enclosure dimensioned to fit around a propane tank. The apparatus includes a side panel positioned on a side of the elongated enclosure, and the side panel includes a plurality of side openings. A perforated covering is positioned along a top of the elongated enclosure. The apparatus also includes a track rail dimensioned to engage with the elongated enclosure and permit access to the propane tank.

In some embodiments, the elongated enclosure may comprise two adjacent enclosure body frames. The elongated enclosure may be dimensioned to allow for a clearance space around the propane tank. The elongated enclosure may include a plurality of roller wheels attached to a bottom portion of the elongated enclosure. The track rail may be dimensioned to engage with the roller wheels and permit movement of at least one portion of the elongated enclosure along the track rail. The track rail may include a plurality of hinges dimensioned to permit movement of at least one portion of the elongated enclosure away from the track rail. A U-shaped heat curtain may be suspended from an inside top of the elongated enclosure. A blow-off relief port may be positioned along a top portion of the elongated enclosure. In some embodiments, the side panel may include alternating raised and lower surfaces extending along a length of the panel, and the lower surfaces each may include a plurality of perforations positioned in a series of square patterns to form a lattice pattern on the side panel. In other embodiments, the side panel may include alternating raised and lower surfaces extending along a length of the panel, and the lower surfaces each may include a plurality of perforations positioned along a length of the lower surface to form a slat pattern on the side panel.

Further described is an apparatus that includes an elongated enclosure dimensioned to fit around a propane tank. The elongated enclosure is formed from a pair of enclosure body frames positioned adjacent to each other. The apparatus also includes a side panel positioned on a side of an enclosure body frame from the pair of enclosure body frames. The side panel comprises a plurality of side openings. A perforated covering is positioned along a top of an enclosure body frame. A track rail is dimensioned to engage with the enclosure body frame and permit movement of at least a portion of the enclosure body frame.

In some embodiments, the enclosure body frame may include a plurality of roller wheels attached to a bottom portion of the enclosure body frame, and the track rail is dimensioned to engage with each of the roller wheels and allow movement of the enclosure body frame away from the other enclosure body frame from the pair of enclosure body frames along the track rail. The track rail may include a plurality of hinges dimensioned to permit movement of at least a portion of the enclosure body frame away from the track rail. The apparatus may further include a substantially U-shaped heat curtain suspended from an inside top of each enclosure body frame. A blow-off relief port may be positioned along a top portion of the elongated enclosure. The side panel may comprise alternating raised and lower surfaces extending along a length of the panel. The lower surfaces may comprise a plurality of perforations positioned in a series of square patterns along the length of the panel to form a lattice pattern on the side panel. In other embodiments, the lower surfaces may comprise a plurality of perforations positioned along a length of the lower surface to form a slat pattern on the side panel.

Also described is a method for enclosing a propane tank comprising the step of positioning a pair of enclosure body frames adjacent to each other to form an elongated enclosure around a propane tank. A side panel is positioned on a side of an enclosure body frame from the pair of enclosure body frames, and the side panel comprises a plurality of side openings. A perforated covering is positioned along a top of an enclosure body frame. A track rail is allowed to engage with the enclosure body frame and permit movement of at least a portion of the enclosure body frame.

In some embodiments of the method, the enclosure body frame may include a plurality of roller wheels attached to a bottom portion of the enclosure body frame. The roller wheels are allowed to engage with the track rail and allow movement of the enclosure body frame away from the other enclosure body frame from the pair of enclosure body frames along the track rail. The track rail may comprise a plurality of hinges dimensioned to permit movement of at least a portion of the enclosure body frame away from the track rail. The method may further include the step of suspending a substantially U-shaped heat curtain from an inside top of each enclosure body frame. A blow-off relief port may be positioned along a top portion of the elongated enclosure. The side panel may comprise alternating raised and lower surfaces extending along a length of the panel. The lower surfaces may comprise a plurality of perforations positioned in a series of square patterns along the length of the panel to form a lattice pattern on the side panel. In other embodiments, the lower surfaces may comprise a plurality of perforations positioned along a length of the lower surface to form a slat pattern on the side panel.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the present invention may be described with reference to the accompanying drawings.

FIG. 1A illustrates schematically a front view of a lattice patterned panel that may be used along a side of an enclosure. Detailed front views of two portions of the panel are shown in Detail B and Detail C of FIG. 1A. FIG. 1B illustrates schematically a perspective view of the lattice patterned panel of FIG. 1A. FIG. 1C illustrates schematically a side edge of the lattice patterned panel of FIG. 1A. A detailed view of a portion of side edge of the lattice patterned panel is shown in Detail A of FIG. 1C.

FIG. 2 illustrates schematically a front view of a portion a lattice patterned panel. Additional side openings are included on intermediate surfaces of the panel between the raised and lower surfaces.

FIG. 3A illustrates schematically a front view of a slat patterned panel that may be used along a side of an enclosure. Detailed front views of two portions of the panel are shown in Detail B and Detail C of FIG. 3A. FIG. 3B illustrates schematically a perspective view of the slat patterned panel of FIG. 3A. FIG. 3C illustrates schematically a side edge of the slat patterned panel of FIG. 3A. A detailed view of a portion of side edge of the slat patterned panel is shown in Detail A of FIG. 3C.

FIGS. 4A and 4B illustrate schematically side and end views, respectively, of an edge trim component that may be used with a patterned panel.

FIGS. 5A and 5B illustrate schematically side and end views, respectively, of a connector trim component that may be used with a patterned panel.

FIGS. 6A and 6B illustrate schematically side and end views, respectively, of a corner cap component that may be used with a patterned panel.

FIG. 7 illustrates schematically in angled side view a lattice patterned panel with an edge trim component.

FIG. 8 illustrates schematically a side view of an adjustable flashing skirt used with a deck enclosure panel.

FIG. 9 illustrates schematically a perspective view of an enclosure that houses a propane tank. The enclosure is in a closed position.

FIG. 10 illustrates schematically an end view of an enclosure that houses a propane tank in a closed position.

FIG. 11 illustrates schematically a side view of an enclosure that houses a propane tank in a closed position.

FIG. 12 illustrates schematically a top view of an enclosure that houses a propane tank in a closed position.

FIG. 13 illustrates schematically a perspective view of a half of an enclosure with a radiant heat curtain.

FIG. 14 illustrates schematically a perspective view of an enclosure that houses a propane tank in an open position.

FIG. 15 illustrates schematically a side view of an enclosure that houses a propane tank in an open position.

FIG. 16 illustrates schematically a top view of an enclosure that houses a propane tank in an open position.

FIG. 17 illustrates schematically a perspective view of an enclosure body frame with roller wheels for one half of an enclosure. The enclosure body frame is positioned on a rail track assembly.

FIG. 18A illustrates schematically a perspective view of an assembled roller track rail assembly for a roller slide enclosure. FIG. 18B illustrates schematically a perspective view of unassembled components of the roller track rail assembly of FIG. 18A. FIG. 18C illustrates schematically a perspective view of a track rail and rail support from the roller track rail assembly of FIGS. 18A and 18B.

FIG. 19 illustrates schematically a side view of a roller wheel engaged with a track rail for an enclosure.

FIG. 20 illustrates schematically a perspective view of an enclosure body frame with roller wheels for one half of an enclosure. The enclosure body frame includes a heat curtain suspended from a top portion of the enclosure body frame.

FIG. 21A illustrates schematically a perspective view of an assembled hinged track rail assembly for a hinged body enclosure. FIG. 21B illustrates schematically a perspective view of unassembled components of the hinged track rail assembly of FIG. 21A. FIG. 21C illustrates schematically a perspective view of a track rail and rail support from the hinged track rail assembly of FIGS. 21A and 21B.

FIG. 22 illustrates schematically a perspective view of a heat curtain that may be suspended from the enclosure body frame.

FIG. 23 illustrates schematically a perspective view of a vertical adjustment bracket for an enclosure.

DETAILED DESCRIPTION OF THE INVENTION

As used herein, the terms “comprises,” “comprising,” “includes,” “including,” “has,” “having” or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, unless expressly stated to the contrary, “or” refers to an inclusive or and not to an exclusive or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).

As used herein, the phrase “at least one of the following: A, B, or C” should be understood to mean one or more of the listed elements is true (or present). For example, “at least one of the following: A, B, or C” is satisfied by any one of the following: only A is true (or present), only B is true (or present), only C is true (or present), any sub-combination of the elements is true (or present), or all of A, B, and C are true (or present). As used herein, the phrase “at least one of the following: A, B, and C” should be understood to mean one or more of the listed elements is true (or present). For example, “at least one of the following: A, B, and C” is satisfied by any one of the following: only A is true (or present), only B is true (or present), only C is true (or present), any sub-combination of the elements is true (or present), or all of A, B, and C are true (or present).

Also, use of the terms “a” or “an” are employed to describe elements and components of the invention. This is done merely for convenience and to give a general sense of the invention. This description should be read to include one or at least one, and the singular also includes the plural unless it is obvious that it is meant otherwise.

Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although methods similar or equivalent to those described herein can be used in the practice or testing of the present invention, suitable methods and materials are described herein. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety. In case of conflict, the present specification, including definitions, will control. In addition, the materials, methods, and examples are illustrative only and not intended to be limiting.

In the following description, numerous specific details are provided, such as the identification of various system components, to provide an understanding of embodiments of the invention. One skilled in the art will recognize, however, that embodiments of the invention can be practiced without one or more of the specific details, or with other methods, components, materials, etc. In still other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of various embodiments of the invention.

I. Deck Enclosure System

Perforated Patterned Panels

FIGS. 1A through 1C illustrate an embodiment of a perforated patterned panel that may be used in an enclosure system. In this embodiment, a perforated patterned panel includes an integral screen pattern that forms a lattice design on the panel. As shown in more detail in FIGS. 1B and 1C, including Detail A of FIG. 1C, the patterned panel includes alternating raised surfaces 1 and lower surfaces 2 extending along the length of the panel in one direction.

For example, the perforated patterned panel may include alternating raised and lower vertical strips (or, depending on the orientation of the panel, alternating raised and lower horizontal strips). Intermediate surfaces 3, shown here as a plurality of sloped surfaces, are disposed between the raised and lower surfaces and allow for transitions between the raised and lower surfaces of the panel.

As shown in more detail in FIG. 1A, including in Detail B of FIG. 1A, a set of the surfaces (for example, either the raised or lower set of strips) includes a plurality of perforated block sections 4. Each block section includes a plurality of substantially square openings 5 that are repeated to resemble a screen pattern, as shown in Detail C of FIG. 1A. As shown in the figure, the perforated block sections are each separated by a solid section 6 on the same surface. The perforated block sections extend in a repeating pattern along a length of the panel on one set of surfaces; for example, on lower strip surfaces (or depending on the panel orientation, on raised strip surfaces). The surfaces from the other set may comprise substantially solid surfaces; for example, substantially solid raised strip surfaces (or depending on the panel orientation, substantially solid lower strip surfaces).

The perforated block sections on one surface are aligned with perforated block sections on other surfaces from the set to form a lattice pattern across the panel. In some embodiments, as shown in FIG. 2, additional side openings may be included on intermediate surfaces. In these examples, the perforated patterned panels are formed into shapes similar to those in a wood lattice. However, it will be appreciated that the perforated patterned panels may be formed into other shapes, such as those similar to wood slats or other desired designs. In preferred embodiments, the perforated patterned panels described here may be joined with various components, including the edge trim components, connector trim components, or corner cap components described below, to form an enclosure around the perimeter of an elevated deck or other building structure.

In this example, the panel is substantially rectangular, measures approximately 4 feet in length and 4 feet in width (4′×4′), and includes a total of 182 repeating perforation patterns that are each approximately two inches square. Each perforated square pattern includes ⅛″ square holes. The shapes and sizes described above are provided as examples, and larger or smaller patterned panels, as well as panels with different opening numbers, shapes, and sizes are also contemplated.

FIGS. 3A through 3C illustrate another embodiment of a perforated patterned panel that may be used along the sides of an enclosure system. In this embodiment, the perforated patterned panel includes an integral screen pattern that resembles a slat design formed in the panel. For brevity, FIG. 3A shows perforation pattern markings in three of eight similar surface strips. However, it will be appreciated that the perforation patterns are also present in the remaining five unmarked surface strips 7 in the same repeating pattern. As shown in more detail in FIGS. 3B and 3C, including Detail A of FIG. 3C, as with the lattice patterned panels, the slat patterned panel includes alternating raised surfaces 8 and lower surfaces 9 extending along the length of the panel in one direction (for example, alternating raised and lower vertical strips or, depending on the panel orientation, alternating raised and lower horizontal strips). Intermediate surfaces 10, shown here as a plurality of sloped surfaces, are disposed between the raised and lower surfaces and allow for transitions between the raised and lower surfaces.

As shown in more detail in FIGS. 3A and 3B, including in Detail B and Detail C of FIG. 3A, a set of the surfaces (for example, either the raised or lower set of strips) includes a plurality of openings 11 that extend continuously along the surface to form a perforated surface. The perforated surfaces extend along a length of the panel on one surface to form a slat design across the panel; for example, on lower strip surfaces (or depending on the panel orientation, on raised strip surfaces). The surfaces from the other set may comprise substantially solid surfaces; for example, substantially solid raised strip surfaces (or, depending on the panel orientation, substantially solid lower strip surfaces). As with the lattice patterned panels, the slat patterned panels may be joined with various components, including the edge trim components, connector trim components, or corner cap components described below, to form an enclosure around the perimeter of an elevated deck or other building structure.

The described perforated patterned panels may be useful in a variety of construction applications. In some embodiments, the perforated patterned panels may be field cut to size using an industry standard circular saw with carbide blade. They may be set side-by-side or overlapped on side and/or top and bottom edges. The panels may be interconnected using bolts, screws, and other mechanisms known in the art for securely connecting metal structures. The panel may also be connected to structures and framing using screws and/or nails (self-drilling screws are preferred and would eliminate the need for pre-drilling metal panels). In a preferred embodiment, the perforated patterned panels are fabricated from either mild steel or aluminum sheet metal with a powder coated finish after fabrication. Aluminum is a particularly preferred material due to its lack of corrosion issues after field cutting.

The perforation patterns and quantities, as well as the panel materials, shapes, and dimensions are provided for illustration purposes only. It will be appreciated that the perforated patterned panels may include a variety of different perforation patterns (e.g., block, continuous, repeating, non-repeating, or irregular perforation patterns), number of perforations, types of perforations (e.g., square or rectangular openings, circular openings, or irregular openings), and number of perforated areas. The perforated patterned panels may include other types of perforated surfaces, such as being a singular flat surface with openings therethrough or alternating angled surfaces that form a V-shapes across the panel. In addition, the panel materials, shapes, and dimensions may also vary according to design considerations, including: ease of manufacturing, desired structural properties of the panel, panel materials used, desired ventilation through the panels, and the intended use of the panels (the intended building structure to be enclosed).

Deck Enclosures With Perforated Patterned Panels

In some embodiments, the described perforated patterned panels may be connected to form a deck enclosure system around the perimeter of an elevated deck or other building structure. Building standards within wildfire prone areas often require that the open sides around elevated decks be enclosed with non-combustible materials to protect the deck framing from burning embers anticipated during a fire event. As decks are generally subject to a great deal of moisture beneath the deck, adequate ventilation is needed. This need can be problematic for other more common methods of enclosure, such as the use of cementitious siding panels and standard foundation vent screens.

In one embodiment, to facilitate installation around an elevated deck, the perforated patterned panels may be used with trim and other components. For example, an edge of a perforated patterned panel may be secured to an edge trim component, as shown in FIGS. 4A and 4B. The two or more perforated patterned panels may be connected using a connector trim component, as shown in FIGS. 5A and 5B. A corner of the enclosure may be sealed with a corner cap component, as shown in FIGS. 6A and 6B. The corner cap component may include two sides oriented at 90 degrees from each other.

The trim components incorporate a linear channel that accepts the outer edges of the panel to enclose the panel edges. Also, the trim components help to block embers from slipping through cracks around the panel edges and into the area beneath the deck, and igniting the area underneath. The trim components may be available in standard lengths (for example, 8′ length to accommodate 4′×4′ panels) and be field cut to length to meet the dimensions and configurations of existing decks. The trim components may also be customized and sized to match the shape and size of a given deck. In a preferred embodiment, the trim components may be made from powder coated extruded aluminum.

FIG. 7 illustrates schematically a perforated patterned panel 12 with an edge trim component 13. For brevity, FIG. 7 shows perforation pattern markings on the upper part of one of the raised surface strips. However, it will be appreciated that the same perforation patterns are also present in blocks along the same strip and on the remaining raised surfaces to form a lattice pattern on the panel.

In some embodiments, the deck enclosure system may incorporate an adjustable flashing skirt under the deck. As shown in FIG. 8, a bottom of a deck enclosure panel (outside face) 14 is attached to a panel frame 15. The flashing skirt 16 (e.g., an aluminum flashing) with a flashing return 17 may be attached to the bottom of the panel frame using screws of rivets. The length of the flashing can be selected based on the dimensions of the deck and surrounding surfaces. The gap from the ground surface 18 may be filled with landscape rock 19.

In some embodiments, metal flashing or foil-face bitumen tape may be applied to the tops of a deck's support joists and down the sides (e.g., a few inches) to reduce growth if embers ignite the deck. The inclusion of steel joists may also reduce vulnerability to both flames and embers, and provide an additional layer of protection.

The described deck enclosure system may help to mitigate the risks of wildfires by enclosing the perimeter of the deck, preventing embers and flammable materials from reaching areas under the deck, and thus reducing the likelihood of a fire start. In preferred embodiments, the perforated patterned panels are formed from one or more metal materials, such as non-combustible aluminum with a powder coated finish, to provide a durable and long lasting fire protection. The system may help to create an ember-resistant zone under and within the enclosed area to make it harder for flames to spread and ignite. It may also help to maintain defensible space to prevent flames from reaching the underside of the deck and to reduce the risk of wildfire.

Further, the described deck enclosure system may provide ventilation and moisture control. Without proper ventilation, decks can become a breeding ground for mold and rot, thus weakening the structure over time. The use of patterned panels with perforated portions helps to prevent moisture buildup beneath the deck and reduce the risk of mold and dry rot. In a preferred embodiment, a 4′×4′ panel may provide approximately 550 in² of screened ventilation, accounting for approximately 25% of the open area, and thus allowing for a dry and well-ventilated area. The perforated patterned panels also may be customized to fit specific structure dimensions and needs. For example, the panels may be field cut to fit a specific deck dimension.

The perforated patterned panels may be used in a variety of different configurations and in other applications. For example, in another embodiment, one or more perforated patterned panels may be connected to industry standard aluminum posts to form a visibility screen (e.g., around outdoor structures). In yet other embodiments, a perforated patterned panel may be used with trim components to replace a foundation vent screen. A trim component may be secured to an edge of a perforated patterned panel and allow for the panel to be pulled out for cleaning and maintenance.

II. Propane Tank Enclosure Systems

Enclosure Body Frames

As discussed, the perforated patterned panels and related systems and components described above may be used in a variety of enclosure systems. Other applications include use of the slat or lattice patterned panels described above as side panels in an enclosure for a utility structure, such as a propane tank. In yet other embodiments, the integral slat or lattice patterned panels described above may be replaced with flat slatted panels or separate ember screens, thus reducing material, labor, reducing production costs.

Referring to FIG. 9, an enclosure 100 for a utility structure, such as a propane tank 102, is shown. The enclosure includes an enclosure body 103 formed from enclosure body frames. The enclosure body frames are constructed of tubular (e.g., square, rectangular, or circular) metal material that form an enclosure structure with two substantially identical halves. The enclosure body frame includes frame members or frame bars, support members on the sides of the frame to allow for attachment of side closure panels, as well as support members on the top of the frame to allow for attachment of a top covering, as also shown in FIG. 17.

Each half of the enclosure body includes an open and a closed end. When the halves are assembled with an open end of one half facing an open end of another half, the components form an elongated enclosure with a pair of closed ends 104 and 105 (also shown in FIG. 10), a pair of sides 106 and 107 (also shown in FIG. 11), a top 108 (also shown in FIG. 12), and an open bottom (not shown). A half of the enclosure body may include a closure latch 109, as shown in FIG. 13. The enclosure is sized and positioned to allow for sufficient clearance space around the propane tank (or other utility structure), while surrounding the tank.

In a preferred embodiment, each half of the enclosure body may be fabricated in two pieces. This configuration allows for the components to be nested, which may help to save packaging and shipping costs, as well as facilitate handling for the end user. The two-piece design may also facilitate assembly and powder coating. Each piece of the enclosure body half may be connected together using couplers and through bolts.

Along the sides of the enclosure body frame, the side openings are covered with vented sheet metal closure panels 110, as shown in FIGS. 9 and 11. In one embodiment, the side openings are covered with ember screens, such as screens comprising 8-mesh-27 gauge stainless steel. In other embodiments, the side closure panels may be available with slats which are provided with 8 mesh ember screens. The side closure panels may also include lattice patterned panels, slat patterned panels, or other alternate side panel designs. The side closure panels may also include a combination of slats and other opening configurations.

Upper side and top openings, 111 and 112, respectively, are covered with a layered mesh material, as shown in FIGS. 9-11. In a preferred embodiment, the layered mesh material includes a 1-inch×1-inch-16 gauge perforated inner layer and 8 mesh-27 gauge screen mesh outer veneer layer. The inner layer material may be powder coated, and the outer 8 mesh material may have a plain finish due to the use of non-corrosive stainless steel material. In other embodiments, the sides closure panels may be constructed of mesh materials without slats (similar to the top of the enclosure shown in FIGS. 9 and 12).

In yet other embodiments, the above-described lattice or slat patterned panels (described above in Section I) may be used along the sides of the enclosure. In this embodiment, the patterned panel includes an integral screen pattern that resembles a lattice or slat design formed in a metal panel. In a preferred embodiment, the integral screen patterned panel described above may be used instead of separate ember screens, thus reducing material, labor, reducing production costs.

Roller Slide Assembly

A roller slide assembly supports and positions the enclosure body frame and allows for movement of the enclosure. The movement facilitates access to the enclosed tank for filling or maintenance purposes, while maintaining desired clearances and enclosure support around a propane tank. Each half of the enclosure body may slide open to allow for access to the interior of the body, as shown in FIGS. 14 through 16.

In one embodiment, an enclosure body frame may be used with roller wheels positioned on a rail track assembly. Referring to FIG. 17, an enclosure body frame 200 incorporates four metal V-shaped roller wheels 201 that are sized and shaped to rest and roll on a track rail assembly 202. As shown in more detail in FIGS. 18A through 18C, the track rail assembly includes a mounting frame with a track rail 203 comprising an inverted V-shape along which roller wheels with a V-shaped groove may slide, as well as a rail support 204. Wheel stop 205 located at an end portion of the mounting frame prevents the enclosure body from sliding off the mounting frame. Center mounting supports 206 are provided along an interior of the mounting frame.

The components of the track rail assembly may be set on a concrete slab or other support surface and connected at the site of the propane tank using bolts, screws, and other mechanisms known in the art for securely connecting metal structures. As shown in FIG. 19, a raised portion of the track rail 207 engages with a groove in the V-shaped roller wheels 208 located along a bottom of the two-piece enclosure body.

While in the closed position, each half of the enclosure frame assembly is positioned near the center of the tank and adjacent to the other half. To access the propane tank for filling or maintenance, the enclosure may be shifted to the open position by sliding each half of the enclosure frame assembly away from the other half along the roller slide frame, away from the center of the tank, creating an access opening. Laches located on the sides of the enclosure body retain the enclosure in the closed position. The track rail assembly may be mounted to an existing concrete slab that is most typically located beneath propane tanks. In the absence of such a concrete slab, the track rail assembly may be provided with mounting features to work in conjunction with other commonly used mounting alternatives, such as concrete piers or ground anchors. Referring to FIG. 20, a heat curtain (as will be further described below) may be used with the enclosure body frame. The enclosure body frame 300 incorporates four metal V-shaped roller wheels 301 that are sized and shaped to rest and roll on track rail assembly 302.

Hinged Assembly

In other embodiments, a hinged assembly may be used to facilitate tank access. As shown in FIGS. 21A through 21C, a mounting frame 303 includes hinges that connect the ends of the enclosure body to the ends of the mounting frame. The mounting frame includes a track rail 304, a rail support 305, and a pair of end mounting plates 306 on each side. Four cross braces 307 are positioned along an interior of the mounting frame to form center mounting supports, and a pair of hinged mounting brackets 308 are located along the ends. The cross braces include notches that may be attached to the track rail assembly with bolts. The hinged connections allow for the enclosure body to be folded into open or closed positions. The mounting frame also provides a surface to support and locate the enclosure body around the sides of the tank.

The features described above may be used in different combinations to accommodate different tank sizes and structures. For example, enclosures utilizing roller slide assemblies may be suitable for both smaller and larger propane tank sizes (for example, 250, 500, or 1,000 gallon tank sizes). Additional enclosure body segments (enclosure body frames) and larger sectional V-shaped roller wheel assemblies may be used for larger (i.e., longer) propane tanks, such as for 1,000 gallon tank sizes. Hinged enclosures utilizing hinged assemblies may be suitable for smaller propane tank sizes (for example, 250 gallons). The described sizes and shapes are provided for illustrative purposes. Enclosure body segments may be constructed in different sizes, shapes, and combinations for different tank sizes and different utility structures.

Additional Features

Referring to FIG. 22, to further reduce the potential of excess heat affecting the propane tank, a radiant heat curtain may be added to the enclosure. A non-combustible material that forms a heat curtain may be suspended from the inside top of one or each body half and formed into a U-shape, with each open end positioned toward the center of the assembled enclosure. The material used may vary depending on heat rating, with higher rated materials using Kevlar or similar material. Grommets are installed along the top edge of the curtain with wire hooks to facilitate suspending the curtain from the enclosure body frame. Clips or other connection structures may be used. To retain the desired curtain shape, the curtain is sewn with an open top hem to accept a metal rod or bar of the desired curtain shape. When in a closed position, the enclosure and inner radiant heat curtain form a continuous wall around the propane tank. A sufficient clearance space (e.g., 1 foot) is maintained between the inside surface of the curtain and outside surface of the propane tank to allow for air flow around the tank. The open ends of the enclosure and inner curtain allow for opening of the assembly for maintenance and filling.

In addition, a blow-off relief port may be incorporated into the enclosure. In the event that the high pressure relief valve activates, a metal blow off relief port is installed in the top surface of the enclosure, directly above the tank's blow-off valve. The relief port is provided with a hinged closure flap that remains closed to prevent entry of embers and is opened only in the event of blow-off valve activation. To help direct flows into and through the relief port, a flanged metal pipe may be connected to the bottom of the port, extending downward toward the top of the blow-off valve. The blow-off relief port helps to prevent the release of air and fuel from an activated valve directly into the inside top surface of the enclosure, diffusing and diverting flows while retaining fuels within the annular space around the tank, reducing the possibility of localized fire and tank explosion.

Referring to FIG. 23, the roller wheels at the bottom of the enclosure body may include vertical adjustment brackets. The bracket includes a vertical slot that accepts the wheel axel. It allows for positioning of the wheels of the enclosure body at different heights to accommodate different distances between the bottom of the enclosure body and concrete slab (or other surface) on which the enclosure body rests. The threaded axels on each of the wheels may be tightened or loosened to attach the wheels to the desired elevation on the bracket. In one example, the bracket allows for adjustment up to approximately 3 inches below or one inch above the track rail assembly.

This disclosure is sufficient to enable one of ordinary skill in the art to practice the invention, and provides the best mode of practicing the invention presently contemplated by the inventor. While a full and complete disclosure is made of specific embodiments of this invention, the invention is not limited by the exact construction, dimensional relationships, and operation shown and described. Various modifications, alternative constructions, design options, changes and equivalents will be readily apparent to those skilled in the art and may be employed, as suitable, without departing from the spirit and scope of the invention. Such changes might involve alternative materials, components, structural arrangements, sizes, shapes, forms, functions, operational features and the like.