Inflatable Above-Ground Swimming Pool With Drop-Stitch Sidewall

Abstract

An inflatable above-ground swimming pool includes a continuous circumferential sidewall formed from drop-stitch composite material, having a fixed wall thickness and defining a sealed chamber for inflation. A bottom panel is sealed to the sidewall to form a water-retaining volume. The pool includes fluid inlet and outlet ports extending through the sidewall, each comprising a flange assembly with an inside flange, an outside flange, and a gasket at both ends to couple to the sidewall. The drop-stitch tensile fibers in the sidewall provide restraint, allowing the sidewall to remain substantially vertical under hydrostatic pressure when the pool is filled with water.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a Non-Provisional Patent Application and claims benefit of U.S. Provisional Patent Application No. 63 / 765242, filed Feb. 28, 2025, and U.S. Provisional Patent Application No. 63 / 963111, filed Jan. 19, 2026. The disclosures of the above applications are incorporated herein by reference.FIELD OF THE INVENTION

[0002] The present disclosure relates to inflatable portable above-ground swimming pools, and more particularly to structurally rigid inflatable pools with integrated fluid circulation and drainage systems configured to function as permanent-style swimming pools while remaining transportable, inflatable, and selectively deflatable.BACKGROUND OF THE INVENTION

[0003] This section provides background information related to the present disclosure and is not necessarily prior art.

[0004] Previous approaches to constructing above-ground swimming pools have involved the use of various materials and designs, including metal frames, wooden frames, and inflatable pools made from PVC or other flexible materials. Inflatable pools, in particular, have been popular due to their ease of setup and portability. However, these pools have often been limited by their durability and ability to withstand hydrostatic pressure. Many inflatable pools have been made from thin, flexible materials that are prone to punctures and tears, and have required frequent inflation and deflation to maintain their shape.

[0005] Some above-ground pools have used more robust materials, such as metal or wood, to provide additional structural support and stability. These pools have often featured a separate frame or skeleton that is assembled around the pool liner to provide shape and support. However, these pools can be heavy, expensive, and difficult to assemble and disassemble. Additionally, the use of a separate frame can create a bulky and unsightly appearance that may not be desirable for backyard or recreational use.

[0006] Previous approaches to pool design have also focused on providing additional support and stability to the pool wall through the use of external frames, brackets, or other reinforcing structures. However, these approaches have often added complexity, cost, and bulk to the pool design, and have not always provided a reliable or durable solution. Previous approaches have attempted to address these challenges through various design modifications and material selections, but none of these approaches have provided a comprehensive solution that combines the features described in this disclosure.

[0007] In the past, many types of temporary and permanent pool designs have been proposed. Permanent pools have been extremely expensive, as in-ground pools, and above-ground pools are typically semi-permanent. Either type typically stays in the installed location and is impossible or hard to move, such as when a person changes residence or when repositioning is desired. Typical in-ground pools are permanent installations of non-portable construction and cannot be stored. Above-ground pools require mechanical components and fasteners and are cumbersome or impractical to store. Rigid or steel-wall above-ground pools, which provide structural stability, can require permanent installation, site preparation, are not portable, steel walls, permits, and complex assembly.

[0008] Conventional inflatable pools have relied primarily on air pressure alone to maintain pool wall shape, resulting in radial bowing under hydrostatic load and an inability to support standard filtration hardware and integrate filtering systems. These pools have also been limited in terms of wall height and stability, and have lacked integrated drainage systems. Limited wall height; Lack durability and have a short lifespan. Temporary pools are known which include large compartments filled with air. These pools retain water but lack any sturdy sides and are not robust. If a party steps on the side of the pool, the pool can pop, or water can leak out of the pool. These types of pools are deflatable and moveable but are known not to be durable. Furthermore, the manufacturing process for these pools has often involved simple welding or adhesive techniques that can compromise the structural integrity of the pool.

[0009] Therefore, it remains a goal in the art to provide a robust inflatable pool unit with a vertical load-bearing inflatable wall that has the advantages and usability of a more permanent pool but can be moved easily if desired.SUMMARY OF THE INVENTION

[0010] This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features.

[0011] According to embodiments of the present disclosure, an inflatable pool structure comprising a continuous circumferential sidewall constructed of a drop-stitch configuration inflated at a nominal high pressure, e.g., of 10 psi, a base portion including a bottom panel operably welded in sealing engagement to the sidewall, at least one fluid inlet port, at least one fluid outlet port, and at least one drainage port is provided. Each port extends through the sidewall width and is connected to the sides of the sidewall using multi-flange assemblies connected to material welded to the sidewall. All seams of the inflatable pool structure are formed using hot-air welding to produce a substantially monolithic structure. When properly inflated and the pool is filled with water, the internal drop-stitch fiber matrix restrains radial expansion, allowing the sidewall to remain substantially vertical under hydrostatic pressure and also under downward forces applied to the sidewalls surrounding the pool-top opening.

[0012] According to a first aspect of the present invention, there is provided an inflatable above-ground swimming pool, including: a continuous circumferential sidewall formed from drop-stitch composite material having an inner layer, an outer layer, and a plurality of drop-stitch tensile fibers extending between the inner and outer layers to define a fixed wall thickness forming a sealed chamber for inflation; a multi-layer bottom sealed to at least one lower edge of the sidewall to define a water-retaining volume; at least one fluid inlet port including a valve extending through the sidewall; and at least two fluid outlet ports each including another of the valves extending through the sidewall; wherein the valves are operably coupled to the inner layer and the outer layer of the sidewall and adapted for connecting filtration assembly hoses, both ends of the valve including at least one inside flange, at least one outside flange, and at least one gasket, said at least one gasket providing watertight seals, and wherein the sidewall, when the pool is filled with water, remains substantially vertical under hydrostatic pressure due to restraint provided by the drop-stitch tensile fibers.

[0013] According to a second aspect of the present invention, there is provided an inflatable above-ground swimming pool system, including: a continuous circumferential sidewall formed from drop-stitch material having an inner layer, an outer layer, and a plurality of tensile fibers extending between the inner and outer dual-layers to define a fixed wall thickness; a bottom sealed to a lower edge of the sidewall to define a water-retaining volume; at least one fluid circulation and filtration system integrated through the sidewall; wherein the sidewall, when the pool is filled with water, remains substantially vertical under hydrostatic pressure due to restraint provided by the drop-stitch tensile fibers, and maintains integrity supporting about 50 to about 500 lbs / sq ft. on a top rim of the sidewall.

[0014] According to a third aspect of the present invention, there is provided a method of manufacturing an inflatable swimming pool, including: forming a sidewall from drop-stitch composite material forming a sealed chamber for inflation; welding the sidewall into a continuous circumferential ring; welding a bottom panel to the sidewall to form a water-retaining volume; forming at least one aperture through the sidewall for a fluid port; installing a valve assembly through the aperture such that the sidewall is connected between flanges of the flange assembly; and sealing the flange assembly such that the pool is water-tight and structurally stable when filled with water. The welding is preferably hot-air welding. The disclosure provides the drop-stitch composite material being formed by fusing high-density drop-stitch fabric with reinforced coatings. The air chamber can be filled to a pressure of about 10-15 psi, and the inflatable swimming pool system configured to function as a permanent-style above-ground pool, wherein the pool maintains substantially vertical sidewalls under hydrostatic pressure while supporting mechanical filtration and drainage hardware integrated through the sidewall, in accordance with aspects of the disclosure.

[0015] Further areas of applicability will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the disclosure, are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations and are not intended to limit the scope of the present disclosure.

[0017] FIG. 1 is a perspective view of an inflatable pool, according to the principles of the present disclosure;

[0018] FIG. 2 is an enlarged partially disassembled, cross-sectional detail view taken at ‘2’ of FIG. 1 illustrating a sidewall's drop-stitch configuration, depicted turned 90 degrees for illustration;

[0019] FIG. 3 is an enlarged top-front-left isometric view of a top rim of the inflatable pool of FIG. 1;

[0020] FIG. 4 is a front view of a vertical seam and inner layer of the sidewall of the inflatable pool of FIG. 1;

[0021] FIG. 5 is a bottom-left-front isometric view of a multi-panel bottom and outer layer of a sidewall of the inflatable pool of FIG. 1;

[0022] FIG. 6 is an enlarged cross-sectional detail view of the sidewall with a panel and multi-layer bottom coupled to the sidewall of the inflatable pool of FIG. 1;

[0023] FIG. 7 is an enlarged top-front-left isometric view of ports with valves connected to a filtering system and connected to the sidewall of the inflatable pool of FIG. 1 in a triangular arrangement;

[0024] FIG. 8 is a front elevation of the inflatable pool of FIG. 1 depicting port openings without the valves;

[0025] FIG. 9 is a perspective view of the inflatable pool with an inset portion for at least one accessory, according to aspects of the present disclosure;

[0026] FIG. 10 is an enlarged, side elevation, cross-sectional detail view of the valves of FIG. 1;

[0027] FIG. 11 is a disassembled, top-front-left isometric view of the valve of FIG. 10;

[0028] FIG. 12 is a bottom-front-right cross-sectional detail view of the valve connected to a surrounding flange connected to the inner layer of the sidewall and connected to another surrounding flange connected to the outer layer of the sidewall of the inflatable pool of FIG. 1;

[0029] FIG. 13 is a bottom-front-left cross-sectional detail view of FIG. 12;

[0030] FIG. 14 is an enlarged, side elevation, cross-sectional detail view of a drainage valve of the inflatable pool of FIG. 1;

[0031] FIG. 15 is a disassembled, top-front-left isometric view of the drainage valve of FIG. 14;

[0032] FIG. 16 is a top-front isometric view of a cover on the inflatable pool of FIG. 1;

[0033] FIG. 17 is a top-front-left isometric view of a ladder and filtering system coupled to a smaller diameter inflatable pool, according to aspects of the present disclosure;

[0034] FIG. 18 is a perspective view of the inflatable pool of FIG. 1 with an alternative port arrangement on the sidewall, in accordance with an aspect of the present disclosure; and

[0035] FIG. 19 is a flow chart of a method of making an inflatable pool, according to aspects of the present disclosure.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. The following description of the example embodiment(s) is merely exemplary in nature and is in no way intended to limit the scope of the present disclosure, its application, or uses.

[0037] Referring now to the figures, and particularly FIGS. 1-17, an inflatable pool system 10, in accordance with aspects of the present disclosure, features a rigid wall configured with a fixed thickness, allowing for high-pressure inflation of its sealed chamber while resisting outward radial bowing and eliminating the need for a separate frame or skeleton assembled around or to the pool to maintain the pool's shape and provide support.

[0038] With continued reference to FIGS. 1-8, the inflatable pool system 10 includes a continuous circumferential sidewall 12 formed from a predetermined drop-stitch composite material. The sidewall 12 is constructed of a drop-stitch configuration 14 comprising at least two layers (an inner layer 16 and an outer layer 18), with a plurality of tensile fibers 20 extending between them in a predetermined pattern, thereby defining a fixed wall thickness (e.g., W in FIG. 2). The sidewall's 12 vertical ends are sealed together, as described in further detail herein. A plurality of caps or panels 22, e.g., formed of PVC-coated fabric material, about the circumference of the sidewall 12 define the sidewall's 12 bottom rim 24 and top rim 26. Each panel 22 is welded to the inner and outer layers 16 and 18 of the sidewall 12, as well as to adjacent panels 22, to create an air-tight seal and form a chamber 28 within the sidewall 12 for inflation of the sidewall 12. The adjacent panels 22 can be taped together with heat-weldable tape 30 at their adjoining ends 32 and 34 and then welded together (e.g., see FIG. 2). The plurality of panels 22 can be taped (e.g., heat-weldable tape 30) to the inner layer 16 and outer layer 18 and then welded (e.g., see FIGS. 2 and 6). The welding is preferably hot-air welding.

[0039] The sidewall 12 chamber 28 is inflatable at a nominal high pressure of generally 8 to 15 psi, typically about 8 to about 10 psi (about 0.55 to about 0.69 bar), preferably about 10 to less than 15 psi (about 1.03 bar). The sidewall 12 chamber 28 can be inflatable to about 10 psi.

[0040] With continued reference to FIG. 2, the sidewall's 12 plurality of tensile fibers 20 can form a high-density drop-stitch core thread reinforcement. The sidewall's 12 plurality of tensile fibers 20 can be stitched to a mesh fabric layer or other fabric 36. The sidewall's 12 inner layer 16 and outer layer 18 are preferably PVC (polyvinyl chloride). The sidewall's 12 inner layer 16 and outer layer 18 can each be a dual-layer PVC (an inner PVC layer 38 and an outer PVC layer 40). The sidewall's 12 construction can be a dual-layer PVC, drop-stitch DWF150-G fabric with Kevlar™ thread reinforcement. The sidewall's 12 mesh fabric layers 36 are preferably coated by the inner PVC layers 38. The sidewall's 12 drop-stitch composite material can have a base fabric weight per square meter of at least about 150 g. The sidewall's plurality of tensile fibers 20 can have a stitch density of generally about 20 to about 150 per square inch, typically about 48 to about 90, preferably about 30 to 55, more preferably 46 to about 50, most preferably more than 45. The breaking strength can be about 1,400 to 2,000 N per 5 cm strip. Per every about 150 g of the plurality of tensile fibers 20, the fibers 20 can be spaced at intervals of generally about 5 to about 8 mm, typically about 5 to about 6 mm, preferably about 5 mm. The sidewall's drop-stitch configuration 14 can be a dual-wall, woven Kevlar™ reinforced drop-stitch composite material. The sidewall's drop-stitch configuration 14 can be generally about 900 to 19,000 tensile fibers 20 per square meter, typically 1000 to 10,000 tensile fibers 20 per square meter, preferably 1000 to 7,000 tensile fibers 20 per square meter, and preferably from about 1800-5000 tensile fibers 20 per square meter. The sidewall's 12 drop-stitch composite material's weight can be from about 1000-4000 grams per square meter, typically 200-3500 grams per square meter, and preferably from about 2500-2900 grams per square meter. The sidewall's 12 tensile strength can be about 2500-5000 N / 5 cm, typically about 3500-4500 N / 5 cm, preferably about 2800-4100 N / 5 cm. The sidewall's 12 drop-stitch composite material is preferably formed by fusing high-density drop-stitch fabric with reinforced coatings. The sidewall 12 in accordance with an aspect of the present disclosure provides any of these combinations. The plurality of tensile fibers 20 extend between the inner and outer layers 16 and 18, and the plurality of tensile fibers 20 are generally perpendicular or traverse to the sidewall height (H). FIG. 2 is depicted partially in exploded view for illustration of layers 36, 38, 40 of the inner and outer layers 16 and 18, according to aspects of the disclosure.

[0041] In an aspect of the disclosure, the plurality of tensile fibers 20 of the sidewall 12 are positioned in substantially parallel columns and / or rows when the sidewall 12 is inflated. In another aspect of the disclosure, the plurality of tensile fibers 20 are positioned in a predetermined repeating pattern when the sidewall is inflated. In yet another aspect of the disclosure, the plurality of tensile fibers 20 are aligned in alternating pairs of parallel columns, each pair of columns being offset or staggered from the next pair of columns when the sidewall 12 is inflated. In another aspect of the disclosure, the plurality of tensile fibers 20 positions and / or patterns vary throughout locations in the sidewall 12 when inflated. It is understood that alternative pattern(s) depending on the application are contemplated without departure from the scope of the present invention.

[0042] With continued reference to FIG. 4, the sidewall's 12 vertical ends 42 and 44 are sealed together at a vertical seam 46 where the two ends 42, 44 meet, forming the continuous sidewall 12. The ends are preferably taped together (e.g., with heat-weldable tape 30) and then welded together forming the vertical seam 46 that is watertight. The welding is preferably hot-air welding.

[0043] With continued reference to FIG. 1, the sidewall 12 of the present disclosure has a height (H) comprising a plurality of zones 48 (e, g., at least two zones, preferably at least three zones) of different tensile fibers 20 (e.g., height as measured parallel to the central axis x of the pool). These plurality of zones 48 extend around the circumference of the sidewall 12. The plurality of zones 48 can have substantially equal heights (as measured along the sidewall 12 height (H)), or the heights can be different. Typically, a first zone h′ (e.g., top zone) is about 20 to 50%, preferably about 30-35%, typically, a second zone h″ (e.g., a middle zone or a lower zone) is about 20 to 50%, preferably about 30-35%, and typically, a third zone h″′ (e.g., lower zone) is about 20 to 50%, preferably about 30-35% of the height (H) of the sidewall 12. The plurality of tensile fibers 20 of the first zone h′ can be a weave-stitch of the plurality of tensile fibers 20, and the fibers 20 are polyester. The plurality of tensile fibers 20 of the second zone h″ incorporate Kevlar™ fiber woven into the plurality of tensile fibers 20 (e.g., of polyester) stitch to increase strength. The plurality of tensile fibers 20 of the third zone h″′ incorporate carbon fiber material woven into the plurality of tensile fibers 20 (e.g., of polyester) stitch for further strength toward the bottom of the sidewall 12. The plurality of tensile fibers 20 of the third zone h″′ incorporate both carbon fiber and Kevlar™ fiber woven into the plurality of tensile fibers 20 (e.g., of polyester) stitch for further strength toward the bottom of the sidewall 12. In an aspect of the disclosure, the one or more of the plurality of zones 48 vary in height from the other zone(s). It is understood that more or less zones 48 are contemplated depending on the application without departure from the scope of the present disclosure. According to another aspect of the present invention, the plurality of zones 48 can additionally, or alternatively, differ in drop-stitch density. Preferably, the most-dense concentration of plurality of tensile fibers 20 is in the lower zone (h″′), with the top zone (h′) having a lower density of fibers per square inch and the density increasing progressively toward the middle (h″) and / or lower zone(s). The plurality of tensile fibers 20 per square meter increases from the first zone nearest the top of the sidewall to the zone nearest the bottom of the sidewall according to aspects of the present invention. The plurality of tensile fibers 20 per square meter can increase by predetermined amounts or at a predetermined percentage or rate from the top edge of the sidewall to the bottom edge of the sidewall in accordance with aspects of the present invention.

[0044] With continued reference to FIG. 2, the sidewall 12 of the present disclosure has a thickness W of generally about 3 to 7 inches, typically about 4 to 6 inches, preferably about 5 to 6 inches, more preferably about 5 inches. It is understood that a greater or lesser sidewall 12 thickness W is contemplated depending on the particular application without departure from the scope of the present disclosure.

[0045] With continued reference to FIGS. 4-7, the sidewall 12 of the present disclosure is connected to a multi-layer bottom 50 to define a water-retaining volume. The multi-layer bottom 50 comprises a plurality of layers 52 that are fused together. A bottom layer 54 of the multi-layer bottom 50 goes up the outward circumference of the sidewall 12 a predetermined distance and is attached to the outer layer 18 of the sidewall 12. The bottom layer 54 is preferably taped (e.g., heat-weldable tape 30) to the outer layer 18 and then welded. A top layer 56 of the multi-layer bottom 50 goes up the inward circumference of the sidewall 12 a predetermined distance and is attached to the inner layer 16 of the sidewall 12. The top layer 56 is preferably taped (e.g., heat-weldable tape 30) to the inner layer 16 and then welded. The welding is preferably hot-air welding. A middle layer 58 of the multi-layer bottom is located between the top and bottom layers 56 and 54. In an aspect of the disclosure, the multi-layer bottom 50 can incorporate predetermined drop-stitching. The plurality of panels or caps 22 are between the multi-layer bottom 50 and the sidewall 12. The plurality of panels or caps'22 attachment locations to the inner and outer layers 16 and 18 of the sidewall 12 can be lower on the sidewall 12 than the attachment location(s) of the bottom layer 54 to the outer layer 18 and / or the top layer 56 to the inner layer 16 of the sidewall 12. In an aspect of the disclosure, the plurality of panels or caps'22 attachment locations to the inner and outer layers 16 and 18 of the sidewall 12 can be the same as the attachment location(s) of the bottom layer 54 to the outer layer 18 and / or the top layer 56 to the inner layer 16 of the sidewall 12, with the multi-layer bottom 50 attachment being over the plurality of panels or caps 22 attachment, e.g., a stack-up of welded layers or taped and then welded layers). The multi-layer bottom 50 rests on a ground surface, e.g., grass, pad, compacted soil, concrete slab, firm surface, etc. In some aspects of the disclosure, the multi-layer bottom includes drop-stitch construction of predetermined thickness. In some aspects of the disclosure, the multi-layer bottom 50 forms the bottom plurality of panels 22 closing off the sidewall's 12 bottom of the air chamber 28.

[0046] Referring to the FIGs. generally, the pool rim 26 structure provides a stable, solid performance top edge to the pool opening. The sidewall 12 can withstand a vertical force acting generally downward on the pool rim 26, in accordance with aspects of the present disclosure. Generally, the sidewall 12 can withstand from about 50 to about 650 lbs per square foot on the pool rim 26, e.g., supporting at least one seated adult person and typically 2 or more adults sitting on the wall. Typically, the wall withstands from about 100 to about 650 pounds per square foot. Preferably, the sidewall 12 can withstand from about 175 to about 650 lbs per square foot on the pool rim 26. This provides an advantage that one or several children or adults can sit on the pool sides at one time without the pool sidewalls collapsing.

[0047] Referring to the FIGs. generally, all seams of the inflatable pool system 10 are reinforced welded seams. All fabric materials attached to the sidewall are preferably hot-air welded.

[0048] It is understood that the inflatable pool system 10 is operably adaptable to have a sidewall 12 of any predetermined height, in accordance with an aspect of the present disclosure, including but not limited to generally about 45 to 72 inches, typically about 48 to about 66 inches, preferably about 48 inches.

[0049] While a substantially circular inflated sidewall 12 is shown, in accordance with an aspect of the present disclosure, the inflatable pool system 10 may be operably adaptable to be any alternative shape(s), e.g., oblong, square, rectangular, etc.

[0050] It is understood that the inflatable pool system 10 is operably adaptable to have a sidewall 12 circumference of any predetermined diameter, including but not limited to, at least about 16 feet, at least about 20 feet, at least about 24 feet, preferably about 16 to about 24 feet, etc., in accordance with an aspect of the present disclosure. Referring to FIG. 17, wherein like numbers depict like parts as to FIGS. 1-16, there is depicted the inflatable pool system 210 illustrating an exemplary alternative smaller outer diameter, e.g., about 8 to about 16 feet, about 10 to 20 feet, etc.

[0051] With continued reference to FIG. 1, in describing an inflation port in accordance with the present disclosure. At least one inflation port 60 is formed into the sidewall 12 for inflating the air chamber 28 of the sidewall 12. An inflation pump 62 is connectable to the inflation port 60 to fill the air chamber 28 of the sidewall 12 to the predetermined psi. A port cover 64 closes off the inflation port 60, e.g., positive fit or threaded cap received in a hollow threaded-interior port shaft or collar. The inflation pump 62 is connected to the inflation port 60 with a hose (e.g., with an inflation hose adaptor, with corresponding positive fit features or tangs to connect with a twist, and / or via male / female threaded engagement to connect the hose to the port) with the inflation port cap removed. The inflation pump 62 can be a Bluetooth™+Wi-Fi digital inflator pump. The inflation pump 62 is a high-pressure inflation and deflation pump for selectively inflating and deflating the air chamber 28, e.g., to at least 10 psi. More than one inflation port 60 can be provided. Preferably, at least two inflation ports 60 are provided and are connectable simultaneously for inflation. The inflation pump 62 can connect to more than one inflation port 60 simultaneously according to an aspect of the disclosure, e.g., incorporating an intermediate hose arrangement coupled to two or more inflation ports 60. The sidewall's 12 air chamber 28 is continuous, extending the entire circumference of the sidewall 12 and the height (H) of the sidewall 12 and plurality of panels 22 when inflated by the inflation pump 62.

[0052] With continued reference to FIGS. 1, 7, and 8, a predetermined ports arrangement 66 is provided in the sidewall 12 configured to accommodate a filtration system 68 (e.g., a pump and filtering system). At least a first port 70 (e.g., upper port) is a fluid inlet port. At least a pair of second ports 72, 72 (e.g., lower ports) are fluid outlet ports. There are preferably three ports in the ports arrangement 66. The pair of second ports 72, 72 can be suction and skimmer ports, and the first port 70 can be a return port. In an aspect of the disclosure, the ports arrangement 66 is a triangular pattern on the sidewall 12 (e.g., equilateral triangle, isosceles triangle) (see FIGS. 1, 7, 8). In an aspect of the disclosure, the ports arrangement 66a has the upper port offset from the pair of lower ports (e.g., scalene triangle, etc.) (see FIG. 18, wherein like numbers indicate like parts as described herein). It is understood that more than three ports are contemplated depending on the application without departure from the scope of the present invention.

[0053] With continued reference to FIGS. 1, 7, 8, and 10-13, each port 70, 72 of the arrangement 66 has an opening or through hole 74 of predetermined diameter through the thickness of the sidewall 12, opening to both the inner and outer layers 16 and 18 of the sidewall 12, and a valve 76 received therein and in sealing engagement with the sidewall 12. Each valve 76 is connectable to the filtration system 68 (e.g., with an inflation hose adaptor, with corresponding positive fit features or tangs to connect with a twist, and / or via male / female threaded engagement to connect the hose to the port) via fluid conduits 78. In an aspect of the disclosure, the fluid conduits 78 can be flex tube, rigid or semi-rigid, pipe, tube, PVC, ABS, Pex, elbows, adapters, threaded male connectors, etc., and any combinations thereof. Water from the pool is circulated through the filtration system 68 via the valves 76 arranged through the sidewall 12. In an aspect of the disclosure, water in the pool is drawn by a pump 80 of the filtration system 68 through the pair of lower ports 72,72 to the filtration system 68, where it is processed and returned to the pool through the upper port 70. In an aspect of the disclosure, the two lower ports 72,72 are generally about 4 to 7 inches, typically about 4 to 6.5, preferably about 5 to 6, more preferably about 6 inches from the pool bottom. In an aspect of the disclosure, with respect to around the circumference of the pool system 10, the two lower ports 72,72 are about 24 inches apart from each other. In an aspect of the disclosure, the upper port 70 is about 15 to 36 inches from both lower ports 72,72, and equidistant from both lower ports 72,72. In an aspect of the disclosure the upper port 70 is about 48 inches from its nearest lower port 72.

[0054] With continued reference to FIGS. 10-13, toward each end of the valve 76 is an outer flange 82 connected to an inner flange 84, with a gasket 86 (e.g., rubber gasket) captured therebetween. Both inner flanges 84, 84 include a collar 88 that faces inward toward each other. Both ends of a pipe or shaft 89 fit into the collars 88,88 to support the flow of water from / to the pool for the filtration system 68 and, in cooperation with the gaskets 86,86, prevent leakage into the sidewall 12 air chamber 28. In an aspect of the disclosure, the fluid inlet port 70 and / or the fluid outlet port(s) 72 through holes 74 typically have an outer diameter of about 1.25-1.75 inches. The through holes 74 are preferably about 1.5-1.75″ inches in diameter. About a 1.5 inch threaded female bushing may be located in the through holes 74. Mechanical fasteners 90, e.g., screws, connect the outer and inner flanges 82 and 84 together. In an aspect of the disclosure, the mechanical fasteners 90 secure through the outer flange 82, gasket 86, and into the inner flange 84 via aligning apertures 92 of each. The mechanical fasteners 90 are received in bosses 91 of the inner flange 84, in aspects of the present disclosure. Each valve 76 is connected to a surrounding flange 94 of material that is water impervious, e.g., of PVC-coated fabric material, toward both ends of the valve 76 prior to installation of the valves 76 to the sidewall 12. The surrounding flanges 94 are operably captured between the inner and outer flanges 82 and 84 of the valves 76 and are generally circular. The surrounding flanges 94 are then hot-air welded to the inner and outer layers 16 and 18 of the sidewall 12 at the ports, thereby connecting the valves 76 to the sidewall 12. In an aspect of the disclosure, half of the valve 76 with its respective surrounding flange 94 is installed from the outside of the sidewall 12, and the other half of the valve 76 with its respective surrounding flange 94 is installed from the inside of the sidewall 12, such that the two halves are aligned and fit together to form the finished valve 76 that is then attached, via the surrounding flanges 94, to the outer and inner layers 16 and 18 by hot-air welding. Preferably, an outer flange cover96 is connected to one or both of the outer flanges 82, 82 of the valve 76, e.g., snap-fit, adjacent the inner layer 16 and / or outer layer 18 of the sidewall 12 (see FIGS. 1, 7, 12, 13) to cover mechanical fasteners 90 and create a cleaner show surface. In another aspect of the disclosure, the outer flanges 82,82 of the valves are not covered, e.g., outer flange cover 96 is not used. The outer flange covers 96 can be chamfered and cover fasteners of the valve 76, e.g., cover screws connected to the outer flanges of the valves. Each valve 76 includes a removable outer cap 98 at one end that closes off or plugs the valve 76 shaft 89, and an inner cap 100 that is preferably removable at the other end having vent 102 openings. The outer cap 98 can be threaded for rotational connection in the valve opening 104 (i.e., on the outwardly facing side). The inner cap 100 can be threaded for rotational connection in the valve opening 106 (i.e., on the inwardly facing side toward the central axis x of the pool). In an aspect of the disclosure, an O-ring or additional gasket is also seated within each collar 88 or otherwise in sealing engagement to the shaft 89 that is fit inside the collars 88, 88. In aspects of the disclosure, an additional gasket 108 (and / or an O-ring(s)) is connected directly adjacent the outer flange's 82 cover 96 and / or elsewhere in the drainage valve 76 or openings 74 in the inner or outer layer 16 and 18 or within the sidewall 12 interior.

[0055] With continued reference to FIGS. 8 and 14-15, according to aspects of the disclosure, at least one drainage valve 110 is provided, connectable to a fluid conduit(s), e.g., plastic pipe, adapter, elbow, hose, Pex flex tube, garden hose. Another aperture or through-hole 112 is provided of a predetermined diameter through the thickness of the sidewall 12, and the drainage valve 110 is installed to the sidewall 12 similarly to the valve 76 as described herein. Both ends of the drainage valve 110 are connected to a respective surrounding flange 94 of material, and the surrounding flanges 94 are then hot-air welded to the inner and outer layers 16 and 18 of the sidewall 12 similarly to the valve 76 as described herein. Toward each end of the valve 110 is an outer flange 114 connected to an inner flange 116, with a gasket 118 (e.g., rubber gasket) captured therebetween. Both inner flanges 116, 116 include a collar 120 that faces inward toward each other. Both ends of a pipe or shaft 121 fit into the collars 120, 120 to support the flow of water from the pool to drain the pool when desired. The gaskets 118, 118 prevent leakage into the sidewall 12 air chamber 28. Preferably, the shaft 121 has a nominal diameter of about 0.5 to 1.5 inches. The through hole 112 has an outer diameter of about 0.25 to 1.75″ inches. The through holes 112 are preferably about 0.75 to 1 inch in diameter. About a 0.75 inch threaded male bushing may be used to connect to a garden hose. Mechanical fasteners 122, e.g., screws, connect the outer and inner flanges 116 and 114 together. In an aspect of the disclosure, the mechanical fasteners 122 secure through the outer flange 114, gasket 118, and into the inner flange 116 via aligning apertures 124 of each. The mechanical fasteners 122 are received in bosses of the inner flange 116, in aspects of the present disclosure. The valve 110 is installed to the sidewall 12 similarly to the valve 76 as described herein. Preferably, an outer flange cover (e.g., 96) is connected to one or both of the outer flanges 114, 114 of the valve 110, to cover mechanical fasteners 122 and create a cleaner show surface, similarly to the valve 76 as described herein. The drainage valve 110 includes a stem 126 with a proximal end 128 connected to at least the outer flange 114, e.g., proximal end 128 threads secured to receiving threads in an aperture 130 of at least the outer flange 114. A distal end 132 of the stem 126, e.g., threaded at the distal end, receives a removable outer cap 134. The stem is about 0.5 to 1 inch in diameter, preferably about 0.75″ and PVC. When the outer cap 134 is removed, the fluid conduit, e.g., garden hose, can thread to the outside of the distal end 132 of the stem 126 when draining water from the pool is desired. The outer flange 114 at the inner layer 16 side of the sidewall 12 has a removable inner cap 136 that closes off or plugs the valve 110 shaft 121 when draining is not desired. The inner cap 136 can be threaded for rotational connection in the valve opening 138 (i.e., on the inwardly facing side toward the central axis x of the pool). In an aspect of the disclosure, an O-ring or additional gasket is also seated within each collar 120, 120 or otherwise in sealing engagement to the shaft 121 that is fit inside the collars 120, 120. In aspects of the disclosure, at least one additional gasket 118 (and / or an O-ring(s)) is connected directly adjacent the outer flange's 114 stem 126 and / or cover 134 and / or elsewhere in the drainage valve 110 or openings 112 in the inner or outer layer 16 and 18 or within the sidewall 12 interior.

[0056] In aspects of the disclosure, the valves 76 and 110 are predominantly plastic parts, e.g., PVC pipes and HDPE flanges and caps, with metal fasteners and rubber gaskets.

[0057] With continued reference to FIGS. 1 and 16, the inflatable pool system 10 includes a cover 140. The cover 140 fits over the pool rim 26 circumference and is secured to the sidewall 12 by a plurality of tie-downs or straps 142, e.g., at least 8 straps. The straps 142 are preferably fabric straps with a fastener 144, e.g., clip buckle, connecting two strap ends to secure the cover in place. One strap end 146 is connected to the cover 140, e.g., sewn, and a second strap end 148 is coupled to the sidewall 12, e.g., each looped into or through an attachment feature connected to the sidewall 12. An attachment bracket 150 is connected to the sidewall 12. The attachment bracket 150 is preferably made of plastic, HDPE, and / or reinforced plastic, and / or partially metal, etc. The attachment bracket 150 has at least one aperture 152 through which, or into which, the second strap end 148 is looped or otherwise attached and held to the attachment bracket 150. The attachment bracket 150 is hot-air welded to the sidewall's 12 outer layer 18. There are a plurality of attachment brackets 150 connected about the circumference of the sidewall 12 a predetermined height below the pool rim 26. The fastener 144 can be a clip-buckle fastener with a detent clip received in a receptacle. The straps 142 hold the cover 140 against the sidewall 12. In aspects of the disclosure, the strap 142 length is adjustable. The attachment brackets 150 can be generally about 35-50 inches, typically about 38 to 45 inches, preferably about 40 to 44 inches, more preferably about 42 inches, from the bottom edge of the inflatable pool system 10, according to aspects of the disclosure. The strap ends 146 and 148 are preferably a fabric material, e.g., polyester webbing, woven material, fabric, tightly woven high-strength polyester webbing, nylon, etc. A strap cover or panel 154 is provided to store each of the sidewall's straps 142 when not in use to keep straps 142 out of the way and maintain a tidy appearance. These strap covers 154 are preferably a flap of material, e.g., PVC-coated fabric, vinyl, etc. The strap covers 154 are connected to the sidewall 12 preferably with hot-air welding. In an aspect of the disclosure, at least one edge 156 of the strap cover 154, e.g., bottom edge of the strap cover 154, is fixed to the sidewall's 12 outer layer 18 (e.g., sewn and / or hot-air welded, and / or taped 30 and then hot-air welded) adjacent to the attachment bracket 150. The remaining three edges 158 of the strap cover 154 are selectively coupled to the sidewall 12, e.g., with Velcro™ tongue and loop. The strap covers 154, e.g., at least 8 strap covers 154, provide easy open / close to access the cover straps 142 for holding down the cover 140 when in use, and to stow the cover straps 142 against the sidewall 12 and behind the strap covers 154 when not in use. It can be appreciated that the number of straps can vary. For example, generally about 6 to 12 straps, typically about 6 to 8 straps, preferably 8 straps can be included.

[0058] In some aspects of the disclosure, the fastener 144 includes an integrated lock, e.g., multi-dial lock integrated in the buckle fastener, for increased security and safety. In an aspect of the disclosure, the cover 140 includes at least one aperture 160, e.g., about a 2 inch substantially circular or oblong aperture, substantially centrally located relative to the diameter of the cover 140.

[0059] With continued reference to FIGS. 1, 3-8 and 16, in accordance with aspects of the present disclosure, the circumference of the inflatable pool system's 10 sidewall 12 has a predetermined rounded radius (r) toward the bottom outer edge, e.g., bottom rim 24. The radius (r) is generally about 2 to 5 inches, typically about 2 to 4 inches, preferably about 3 inches. The pool rim 26 has a predetermined rounded radius (r′) toward the top outer edge. That radius (r′) is generally about 1 to 5 inches, typically about 2 to 4 inches, preferably about 2.5 inches. In another aspect, at least one inset portion 162 (e.g., see FIG. 9) with a narrower diameter is provided. The inset portion is preferably the lower circumference of the inflatable pool system 10. The inset portion is a predetermined height, e.g., generally about 2 to 7 mm, typically about 3 to 6 inches, preferably about 5 inches in height. At least one accessory 164 (e.g., water-safe lighting source, predetermined rope strips, puck lights, LED lighting source, LED strip(s), or any other lighting selected for suitability near water or in contact with water) can be coupled to the inset portion 162 (e.g., FIG. 9).

[0060] With reference to the FIGs. generally, the inflatable pool system 10 can meet one or more predetermined ISO 2411 tensile, T-peel test, DIN 53363 tear, SGS REACH chemical-safety standards, and ANSI / APSP-14 portable-pool standards, preferably a combination of all.

[0061] The inflatable pool system 10 can include at least one predetermined accessory 164, e.g., a stabilizer ladder 166 (see FIG. 17), step(s), interior seating(s), mountable tray(s) on top rim or interior, ladder(s), BluetoothTM +Wi-Fi inflation pump, inflator and / or deflator, integrated cover-tiedown locks, elongated ladder stabilizers, base pad(s), lighting source(s), accessory attachment features, etc. The stabilizer ladder 166 can include a base with two elongated stabilizing braces. Each stabilizing bracket may also incorporate an anti-entrapment feature.

[0062] Unlike conventional PVC inflatable pools that lack rigidity and durability, the inflatable pool systems in accordance with the present disclosures maintain a hard, structural integrity when inflated, allowing them to mimic a solid-walled pool while retaining the advantages of a lightweight, portable, and easy-to-store product. There are many advantages provided in the present disclosures, including providing an affordable, premium alternative to costly traditional pools, without the hassle of complex installations, permits, or long-term commitments. The pool is transportable and inflatable while providing structural rigidity.

[0063] Referring now to FIG. 19, a method of manufacturing the inflatable pool system 10, 210, according to aspects of the present disclosure includes forming a sidewall from drop-stitch composite material, forming a sealed chamber for inflation (block 310). Hot-air welding the sidewall into a continuous circumferential ring (block 320). Hot-air welding a plurality of panels to a top and bottom rim of the sidewall (block 330). Hot-air welding a bottom panel to the sidewall to form a water-retaining volume (block 340). Forming a plurality of apertures or through holes through the sidewall in a predetermined arrangement on the sidewall for a plurality of fluid ports (block 350), e.g., a triangular arrangement. Connecting a surrounding flange of fabric material toward both ends of a valve assembly of each fluid port (block 360). Installing the valve assembly through the apertures, said valve including at least one gasket for sealing the valve assembly (block 370). Hot-air welding each surrounding flange to both vertical outer surfaces of the sidewall (block 380). The inflatable pool is water-tight and structurally stable when the sidewall sealed chamber is filled with air to a pressure of about 10-15 psi. The inflatable pool maintains substantially vertical sidewalls under hydrostatic pressure while supporting the valve assemblies and drainage hardware integrated through the sidewalls. The drop-stitch composite material can be formed by fusing high-density drop-stitch fabric with reinforced coatings and a plurality of tensile fibers as further disclosed herein.

[0064] A method of manufacturing the inflatable pool system, according to aspects of the present disclosure, includes the step of providing a sidewall configuration formed from drop-stitch composite material that includes an inner layer, an outer layer, and a plurality of tensile fibers extending between the inner and outer layers that define a fixed wall thickness. Aligning ends of the sidewall 12 together and applying tape, creating a vertical seam where the ends meet. Hot-air welding a vertical seal to form a continuous circumferential sidewall 12. Taping a plurality of panels 22 around the bottom and top rim 24 and 26 of the sidewall to the inner and outer layers 16 and 18 of the sidewall 12, creating taped seams. Hot-air welding a plurality of panels 22 around the bottom and top rim of the sidewall 12 to the inner and outer layers 16 and 18 of the sidewall 12, thereby sealing off the sidewall 12 and forming a sealed chamber 28 for inflation. Taping a bottom layer of a multi-layer bottom panel 50 (e.g., a 3-layer bottom panel) to the outer layer 18 of the sidewall. Taping a top layer of the bottom panel to the inner layer 16 of the sidewall. Hot-air welding the bottom layer to the outer layer. Hot-air welding the top layer to the inner layer at a lower edge of the sidewall to define a water-retaining volume. The tape is heat-weldable tape. Optionally, inflating the sidewall with air. Forming a plurality of port apertures or through holes 74 through the sidewall in a predetermined arrangement. The arrangement is preferably triangular. Alternatively, forming the port apertures through the sidewall is done before creating the vertical seam. Providing a plurality of valves 76 operable to provide fluid input and fluid output. Attaching a circumferential surrounding flange 94 of material to one of the valve's halves toward one valve end and attaching another circumferential surrounding flange of material to the other valve half toward the other end. Inserting the valve half into the port aperture from the other side of the sidewall and hot-air welding the surrounding flange to the sidewall. Inserting the other valve half into the port aperture from one side of the sidewall into sealed engagement with the first valve half, and hot-air welding the surrounding flange 94 to the sidewall 12. Repeating at least twice, thereby forming a valve arrangement on the sidewall that is triangular. Providing a drainage valve 110 and connecting it similarly to a surrounding flange 94, then hot-air welding to the sidewall 12 inner and outer layers 16 and 18. Selectively connecting a hose to the drainage valve when draining the volume of water from the pool is desired. Connecting a fluid circulation and filtration system 68 to the triangular valve arrangement. Additional and alternative details of the method can be gleaned from throughout the written description, which are incorporated herein by reference.

[0065] Benefits of the inflatable pool system 10 and method for manufacturing same include, but are not limited to: durability; chemical (e.g., Chlorine™) resistant or tolerant; high-pressure drop-stitch construction; high-pressure air chamber and sturdy walls that are not collapsible when filled; drop-stitch technology including thousands of internal threads connecting the walls of the pool, allowing it to be inflated to high pressures (over 10 psi), resulting in rigid, straight walls that maintain their shape and structural integrity; creates a stable, high-performance pool that feels like a permanent fixture but remains portable; strength & durability beyond traditional PVC pools; premium, high-performance inflatable pool system with drop-stitch configuration; combines the durability of above-ground pools with the convenience and flexibility of an inflatable structure; UV resistant, whereas conventional inflatable pools often puncture, leak, or degrade under UV exposure; multi-layered drop-stitch fabric can be reinforced with military-grade coatings, making it resistant to punctures and tears (unlike standard vinyl inflatable pools), UV-resistant, ensuring longevity even under extreme sunlight, capable of supporting users leaning on the walls without collapse, unlike standard inflatable options; easy setup and storage; no metal frames, heavy construction, or professional installation required, rather users unroll, inflate, and fill with water, and use connectable filtration; Unlike traditional above-ground pools, which require tools, hours of setup, and large storage spaces, our pool deflates for compact, easy storage or transport; Unlike traditional above-ground pools that are bulky, unattractive, and difficult to move, the pool system 10 is sleek and modern with custom options for resorts, events, and rental businesses, including accessories and sidewall arrangement of fluid circulation and filtration ports; cost-effective; significantly cheaper than in-ground pools without sacrificing quality or experience; requires less water and fewer chemicals due to optimized circulation, making it a sustainable, eco-conscious choice; ability to store and reuse means less waste compared to traditional pools that require extensive repairs or full replacement; use of Drop-Stitch Material in large, deep inflatable pools (e.g., at least 35 to about 48 inch fluid-fill height, at least about 40 inch); uses high-pressure, rigid-wall inflatable technology providing structural integrity, strength, and durability while remaining fully inflatable; walls stay straight even under water pressure acting from the retained water; stable top edge holds its shape, combination of durability, customization, and portability; storage, transported, and re-used without the performance degradation of standard inflatable pools; unique combination of high pressure, reusability, and portability in a pool format. The method of fusing high-density drop-stitch fabric with reinforced coatings makes this pool system more resistant to weather, water pressure, and user interaction than traditional inflatable designs.

[0066] Although the terms “first,”“second,”“third,” etc. may be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer, or section. Terms such as “first,”“second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer, or section discussed below could be termed a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0067] Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0068] The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Claims

1. An inflatable above-ground swimming pool system, comprising:a continuous circumferential sidewall formed from drop-stitch material having an inner layer, an outer layer, and a plurality of tensile fibers extending between the inner and outer layers to define a fixed wall thickness with a sealed chamber for inflation;a bottom sealed to a lower edge of the sidewall to define a water-retaining volume;at least one fluid circulation and filtration system integrated through the sidewall;wherein the sidewall, when the sealed chamber is inflated and the pool is filled with water, remains substantially vertical under hydrostatic pressure due to restraint provided by the drop-stitch tensile fibers.

2. The inflatable above-ground swimming pool system of claim 1, wherein the sidewall maintains integrity supporting about 50 to about 650 lbs / sq ft on a top rim of the sidewall.

3. The inflatable above-ground swimming pool system of claim 1, wherein the inner layer is a dual-layer of material and the outer layer is a dual-layer of material.

4. The inflatable above-ground swimming pool system of claim 1, wherein the bottom is a multi-layer bottom including a plurality of panels of fabric material.

5. The inflatable above-ground swimming pool system of claim 1, wherein the fluid circulation and filtration system comprises:at least one fluid inlet port extending through the sidewall; andat least two fluid outlet ports extending through the sidewall that are water-impervious, wherein positions of said fluid inlet and outlet ports form a triangular arrangement on the sidewall.

6. The inflatable above-ground swimming pool system of claim 5, wherein each of the fluid inlet port and the fluid outlet port comprises an inside flange, an outside flange, and at least one gasket configured to couple to a surrounding flange of fabric material that is water-impervious and that is attached by hot-air welding to the inner and outer layers of the sidewall.

7. An inflatable above-ground swimming pool, comprising:a continuous circumferential sidewall formed from drop-stitch composite material having an inner layer, an outer layer, and a plurality of drop-stitch tensile fibers extending between the inner and outer layers to define a fixed wall thickness forming a sealed chamber for inflation;a multi-layer bottom sealed to at least one lower edge of the sidewall to define a water-retaining volume;at least one fluid inlet port including a valve extending through the sidewall; andat least two fluid outlet ports each including another of the valve extending through the sidewall;wherein the valves are operably coupled to the inner layer and the outer layer of the sidewall and adapted for connecting filtration assembly hoses, both ends of the valve including at least one inside flange, at least one outside flange, and at least one gasket, said at least one gasket providing watertight seals, andwherein the sidewall, when the pool is filled with water, remains substantially vertical under hydrostatic pressure due to restraint provided by the drop-stitch tensile fibers.

8. The inflatable above-ground swimming pool of claim 7, wherein the sidewall maintains integrity supporting about 50 to about 650 lbs / sq ft.

9. The inflatable above-ground swimming pool of claim 7, wherein the sidewall has a thickness between about 4 inches to about 7 inches.

10. The inflatable above-ground swimming pool of claim 9, wherein the sidewall has a height of at least about 48 inches.

11. The inflatable above-ground swimming pool of claim 7, wherein the plurality of tensile fibers are oriented substantially perpendicular to the inner and outer layers′ height.

12. The inflatable above-ground swimming pool of claim 11, wherein the sidewall comprises a plurality of zones of the plurality of tensile fibers along a height of the sidewall, wherein the plurality of zones includes at least a first reinforced zone, a second reinforced zone, and a third reinforced zone.

13. The inflatable above-ground swimming pool of claim 12, wherein the plurality of tensile fibers per square meter increases from the first reinforced zone nearest a top rim of the pool to the third reinforced zone nearest a bottom of the pool.

14. The inflatable above-ground swimming pool of claim 11, wherein the sidewall comprises a plurality of zones of the plurality of tensile fibers along a height of the sidewall, wherein a top zone is the plurality of tensile fibers being polyester, a middle zone incorporates Kevlar™ fiber woven into the plurality of tensile fibers, and a lower zone incorporates carbon fiber material woven into the plurality of tensile fibers.

15. The inflatable above-ground swimming pool of claim 14, wherein the top zone is about 30-35% of the sidewall height, the middle zone is about 30-35% of the sidewall height, and the lower zone is about 30-35% of the sidewall height.

16. The inflatable above-ground swimming pool of claim 14, wherein the top zone is about 20-50% of the sidewall height and / or the lower zone is about 20-50% of the sidewall height.

17. The inflatable above-ground swimming pool of claim 7, wherein the sidewall forms a continuous circumferential ring joined by at least one hot-air welded seam.

18. The inflatable above-ground swimming pool of claim 7, wherein each of the inside and outside flanges of the valves are secured together by mechanical fasteners extending through aligned openings in the inside flange and outside flange, and the gasket is located therebetween.

19. The inflatable above-ground swimming pool of claim 18, further comprising a surrounding flange connected between the inner and outer flanges, wherein the surrounding flange is a weldable water-impervious fabric material and hot-air welded to the inner and outer layers of the sidewall.

20. The inflatable above-ground swimming pool of claim 19, further comprising a flange cap secured over each outer flange of the valve and covering the mechanical fasteners.

21. The inflatable above-ground swimming pool of claim 7, wherein the sidewall resists outward radial bowing when filled to operating water levels.

22. The inflatable above-ground swimming pool of claim 7, wherein the pool supports continuous circulation of water using an external pump and filter without deformation of the sidewall.

23. The inflatable above-ground swimming pool of claim 7, wherein the chamber is fillable with air to a pressure of about 10-15 psi.

24. The inflatable above-ground swimming pool of claim 7, wherein the chamber further comprises a plurality of top and bottom panels across a top and bottom of the sidewall and hot-air welded to the inner and outer layers of the sidewall.

25. The inflatable above-ground swimming pool of claim 7, wherein fluid inlet port and fluid outlet port have a diameter of about 1.25-1.75 inches.

26. A method of manufacturing an inflatable swimming pool, comprising:forming a sidewall from drop-stitch composite material forming a sealed chamber for inflation;hot-air welding the sidewall into a continuous circumferential ring;hot-air welding a plurality of panels to a top and bottom rim of the sidewall;hot-air welding a bottom panel to the sidewall to form a water-retaining volume;forming a plurality of apertures through the sidewall in a predetermined arrangement on the sidewall for a plurality of fluid ports;connecting a surrounding flange of fabric material toward both ends of a valve assembly of each fluid port;installing the valve assembly through the apertures, said valve including at least one gasket for sealing the valve assembly; andhot-air welding each surrounding flange to both vertical outer surfaces of the sidewall,wherein the pool is water-tight and structurally stable when the sidewall sealed chamber is filled with air to a pressure of about 10-15 psi, andwherein the pool maintains substantially vertical sidewalls under hydrostatic pressure while supporting the valve assemblies and drainage hardware integrated through the sidewalls.

27. The method of claim 26, wherein the drop-stitch composite material is formed by fusing high-density drop-stitch fabric with reinforced coatings.

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