Abstract: Components of swimming pools, such as rims and base plates, are addressed herein. The rims and plates are adapted for positive interlock to prevent movement of one relative to the other, and the rims typically include dual flanges of differing heights. Among base plates contemplated hereby are ones containing a slot formed by their two vertical walls and which provide guidance at their edges for positioning their associated rims.

Abstract: A method of securing elongated lengths of lighting track in the aggregate coping face of a liner type swimming pool. The method includes applying double sided adhesive tape to a shelf face of a form board utilized to define the cross-sectional contour of coping to be poured. The track is removably mounted adhesively against the tape and retained thereat until after curing of the aggregate has been completed. Following curing of the aggregate, the form board is removed to expose the face of the track in the face of the coping.

Abstract: A swimming pool has a plurality of substantially vertical side walls, with each side wall having a top. A coping is attached to the top of a side wall of the pool and has a curved facia. A signage platform is attached to the facia of the coping. The signage platform has a substantially vertical display wall and an adjoining substantially horizontal display wall. Visual indicia are located on each of the vertical display wall and the horizontal display wall.

Abstract: A system for assembling together prefabricated panels to form a water-retaining wall, in particular a swimming pool wall, each panel being constituted by a sheet metal plate having two opposite edges, defining substantially the height of the wall, which edges are folded to the same side of the panel to form two flanges, the system being characterized in that two consecutive panels disposed vertically side by side are assembled together by matching shapes between the two adjacent flanges (3) of the two panels (1) and two rectilinear section members (7, 9) comprising a first section member (7) having a C-shaped right cross-section which is designed to be fitted over the two adjacent flanges (3) of the two panels (1), and a second section member (9) which is designed to be engaged inside the first section (7) and between the adjacent flanges (3) of the two panels (1), together with stiffening means for locking the two flanges (3) into position between the two section members (7, 9).

Abstract: Support systems for vessels such as above-ground swimming pools are disclosed. Each system may include one or more buttresses adapted to support substantially the entire vertical height of the side wall or each of a series of side walls of the pool. The buttresses, which flare along their lengths, closely match the support they provide each side wall to the outward water pressure present along its height for enhanced reliability. The diminished space required for installation of the disclosed buttresses reduces the surface area required for their associated pool.

Abstract: An in-ground pool with an inflatable flange and a non-rigid flexible body to permit the body to conform to the interior surface of a hole. The pool is designed with an exterior circumferential flange which is placed around the ledge of a hole dug in sand or soil which positions the body of the pool over the interior surface of the hole. The pool may then be filled with water with the interior surface of the hole acting as lateral support for the pool. The flange is secured to the ground with stakes which engage the flange and are driven into the ground around the exterior perimeter of the flange. When it is desired to remove the pool, the water is removed and the flange deflated so that the pool may be folded for storage and/or transport.

Abstract: An above-ground pool is made up of a plurality of posts, wherein each post is a blow-molded unit having a base portion and a top portion with a coping seat. A plurality of coping members also blow-molded are each telescopically received one end to the other at the coping seat of the top of each post, and a one-piece fastener engages the overlapping telescopic ends of the coping members to the top of the post. A bracket is provided at the base of the post, the bracket having a rail for receiving track segments wherein an elongated flexible metal wall is inserted. The top of the flexible wall is retained by the coping member against the post.

Abstract: An above-the-ground pool construction having a catastrophic failure-proof wall of comparatively low weight which is fabricated from a laminate of polypropylene and a woven polypropylene mesh reinforcement. The new wall is stronger and safer than existing walls; it is lighter weight; and it provides ease of pool wall decoration through the use of woven designs in the reinforcing mesh or by printing the mesh before it is laminated.

Abstract: A spa pool containing water within which humans can sit comfortably, which is portable, and which can be assembled and disassembled and stored sectionally. The water is recirculated through a externally connected pump and filtered heat system with a separately connected air induction pipe. Through this pipe air is forced through the water circulating within the contained and the water within the walls of the container.

Abstract: A method for installing a liner in a swimming pool including a wall having a liner edge retainer extending along the upper periphery. With the pool containing water, an edge of a liner is attached to the retainer at a first position on the wall and a pulling device is attached to the liner edge at a position opposite the retainer attachment. The pulling device is manipulated to drag the liner along the pool bottom and up the wall to a position opposite the first position where the edge is then attached to the retainer. A substantial portion of the pool water is scooped up in the liner and the remaining water can be pumped from between the wall and liner. The method can be used to install a second liner over an existing first liner by using different liner edge retainers. More than one embodiment of the pulling device is disclosed.

Abstract: A church baptistry formed of reinforced polyester material has a main tub area with a bottom wall and contiguous adjoining side walls and end walls extending upwardly from the bottom wall, and at least one integrally formed stairway extending outwardly and upwardly from one or more of the side or end walls. Each stairway has opposed side walls and an inclined bottom wall adjoined at a lower end to the tub area which extends angularly upward and outward therefrom with a flight of steps formed in the inclined bottom wall. At least one lower step is integrally formed in the tub area bottom wall and adjacent side or end wall and extends a distance upwardly from the bottom wall and inwardly a distance into the main tub area beyond the adjacent side or end wall to form a continuation of the flight of steps and may serve as a child's platform. The steps have a tread width greater than the corresponding riser height.

Abstract: An improved filtration system for swimming pools and the like is disclosed, in which none of the water passing through the filter passes through the recirculating pump for the swimming pool. This is accomplished by connecting the water inlet of the filter directly with the floor drain and surface skimmer. The outlet from the filter is interconnected with an entrainment nozzle supplied with water under pressure from the recirculating pump for the pool. The pump withdraws water directly from the pool, and supplies that water under pressure to the entrainment nozzle, which then draws water through the filter from the outlet to mix such filtered water with the water supplied by the pump to the entrainment nozzle for return to a return outlet in the pool. As a consequence, water flowing through the filter is drawn through it by means of suction, rather than by supplying the water under pressure.

Abstract: The spa disposed outside the wall of the swimming pool is attached to the swimming pool, i.e., uses a part of the wall system of the swimming pool, by means of a special panel formed with an undercut or recessed portion that accepts a integrally formed at the top of the molded plastic spa. The result is a continuous flow of the wall system footing sad surrounding deck. The perimeter of the molded plastic modular spa shell is supported by panels that also incorporate the deck support system preferably an X-type brace support system used around the swimming pool. A continuous, homogenous concrete bond beam is poured around the entire perimeter of the pool and integrated spa. Operation of the pool and the spa (in either the spa spillway waterfall mode or spa mode) may be controlled by manually manipulating the valving system or by electronically activated motorized valves.

Abstract: An above-ground swimming pool comprises a primary wall extending above a ground surface to enclose a primary pool area. The primary wall including an enclosure region having a first wall height and a spillway region having a second wall height lower than the first wall height. An arcuate secondary wall extends above the ground surface. Opposite ends of the secondary wall are attached to the primary wall at either side of the spillway region. The secondary wall has a third wall height lower than the first and second wall heights. The secondary wall and the primary wall enclose a secondary pool area. A pump is provided to pumping water from the secondary pool to the primary pool to generate a flow of water over the spillway region. The primary wall may consist of a first wall and a second wall joined together at a transition piece. The secondary wall may additionally be connected to the primary wall at the transition piece.

Abstract: The installation of a vinyl liner within an in-ground swimming pool is carried out using a direct drive, over-hung vacuum machine to exhaust air from between the liner and the steel walls and cement bowl within which the liner is installed. The vacuum machine has the overhung impellor located within a volute chamber isolated from the driving electric motor, so that the induced air flow is segregated from the driving motor. The vacuum machine impellor is of non-corrosive material, to avoid corrosion of the impellor when water is entrained, and to avoid the consequent imbalance and undue wear of the bearing that would otherweise ensue. The paddle-style impellor blades ensure that the vacuum suction is insufficient to cause intake of the pool liner into the air-evacuation hose.

Abstract: A patio pond (10, 60) is formed by a bottom (12) of boards (22) with notches (32) formed in their upper surfaces, a wall (14) formed of a plurality of square panels (40) fit into the notches in the boards of the base, a flexible water tight membrane (18) which is fit over the upper edges of the square panels (40) and a top (16) formed of a plurality of boards (34) having notches (38) formed in their lower surfaces to fit over the membrane and upper edges of the panels to complete construction of the patio pond. The membrane (18) defines an enclosed volume (20) to be filled with water. The top, bottom and walls of the pond support the force of the water without the need to use any fasteners whatsoever.

Abstract: A modular containment system, primarily for secondary containment of potentially hazardous materials, includes a series of interconnectable berm members which can be interlocked together to form virtually any desired containment perimeter. A sheet of flexible plastic material is laid over the containment area, and extends over the shoulders of the perimeter structure as a liner for the containment area. The liner is secured to the top of the perimeter structure, such as by a snap-in tube arrangement. For high stability of the perimeter structure, the modular berm members are hollow, formed of plastic material, to be filled with water or sand, as well as having a low, wide profile.

Abstract: A portable spa including a cover having two rigidly molded, interlocking halves, designed to conform with the contour of the rim of the spa. The rim includes a vertical extension which interfits with an extrusion used to attach an interchangeable decorative vinyl-covered skirt about the side surface of the spa. The spa structure is supported by an integral molded bottom pan, which provides an upper edge or rim against which the lower edge of the skirt is secured.

Abstract: The present invention relates to a flexible insulating panel for an out-of-ground swimming pool, the latter comprising vertical structural ribs that radially outwardly protrude therefrom. The panel comprises a substantially rectangular insulating foam liner encased in a protective jacket. The panel defines an inner surface abutting on the outer surface of the pool peripheral wall and a water-resistant outer surface. The panel is correctly dimensioned and adapted to fit between two consecutive ribs, a plurality of panels thus being installed in a peripheral consecutive manner along the peripheral wall of the pool. The jacket of the panel has two flanges that extend tangentially, relative to the pool peripheral wall, each flange straddling the flange of the next panel, adjacent to and over the rib between the two of them.

Abstract: A portable spa including a cover having two rigidly molded, interlocking halves, designed to conform with the contour of the rim of the spa. The rim includes a vertical extension which interfits with an extrusion used to attach an interchangeable decorative vinyl-covered skirt about the side surface of the spa. The spa structure is supported by an integral molded bottom pan, which provides an upper edge or rim against which the lower edge of the skirt is secured.

Abstract: An enclosed swimming pool is disclosed having floor, side and roof members formed of panels of polyurethane material covered on the interior and exterior surfaces thereof with a layer of fiberglass reinforced resinous material to form a monolithic enclosure for holding a quantity of water and an opening in the side wall member to permit access to the interior of the enclosure.

Abstract: The panel wall pool includes a sidewall with spaced apart panels supported in an upright position when the pool is empty by an inflatable ring, which also provides the protection of a cushion along the top of the sidewall area. The sidewall also includes a reinforcing band which encircles the panels to bind the panels together to substantially prevent individual panels from being forced outward and to help to prevent the outward bending or bowing of the sidewall of the pool.

Abstract: A variable size, portable above-the-ground swimming pool comprising a frame portion having a flexible liner portion attached thereto. The frame portion includes a plurality of first wall members which are of a first length. Attached to and extending between the top ends of the first wall members are a plurality of rim members. The liner portion includes an upper rim which defines a plurality of horizontally oriented rim sleeves sized to slidably receive respective ones of the rim members. Extending downwardly from the upper rim is a sidewall which defines inner and outer surfaces. Disposed on the outer surface of the sidewall are a plurality of vertically oriented wall sleeves which are sized to slidably receive respective ones of the first wall members, while attached to the sidewall is a floor. The sidewall is of a first height, and is selectively collapsible to a second height which is less than the first height.

Abstract: A portable spa including a cover having two rigidly molded, interlocking halves, designed to conform with the contour of the rim of the spa. The rim includes a vertical extension which interfits with an extrusion used to attach an interchangeable decorative vinyl-covered skirt about the side surface of the spa. The spa structure is supported by an integral molded bottom pan, which provides an upper edge or rim against which the lower edge of the skirt is secured.

Abstract: A reinforcing fixture that is to be connected in multiple to an end wall also has a U-shaped section in and upper horizontal member for supporting a receptacle for a swimming-pool cover and rolling mechanism. Each of the fixture is readily and accurately positioned on the end wall for positioning the receptacle mechanism accurately at the required height relative to the upper edge of adjacent side walls.

Abstract: An aquatic safety slide and wading pool which provides increased comfort and cushioning through placement of the slide surface atop inflatable gas filled tubes. A ramp element is connected to the slide surface at the far end of the slide to slow down and brake the motion of the user and to prevent the user from sliding off the end of the slide onto rough ground. Also, longitudinally directed jets of water are injected at the beginning of the slide to provide a positive water flow from the beginning of the slide to the end of the slide to assist the user in the slide. The cushioning of the sides and bottom and the maximum shallow depth also provides safety for infants and tots when the apparatus is used as a wading pool.

Abstract: The present invention relates to a pool which permits movements such as complicated twisting of the legs and loins in stretching movements to be easily performed in water. The pool has a space surrounded by walls and a bottom and an irregular portion including recesses each having the form of an isosceles right-angled triangular prism, which are formed on a portion of the walls, and the projections formed between the respective adjacent recesses. The pool further has substantially horizontal handrails respectively provided at the upper ends of the recesses. Massage nozzles may also be provided in the walls of the recesses so as to spray streams of water.

Abstract: An on-ground pool generally consisting of a peripheral support wall including a pair of side wall sections and a pair of end wall sections, a peripheral mounting rail structure mounted on the wall structure, having a downwardly opening channel-shaped portion receiving the wall structure and an outwardly opening channel-shaped portion, a plurality of peripherally spaced, outwardly projecting compression struts having the inner ends thereof received within the outwardly opening channel portions of the rail structure and rigidly secured to the rail structure, a peripheral facia structure having an inwardly opening channel portion receiving outer ends of the compression struts therein, the outer ends of the compression struts being rigidly secured to the facia structure, decking disposed on and secured to the compression struts, a tension rod disposed on each side and end section of the wall structure, engaging the compression struts and secured at its ends to the rail structure at the ends of the wall or end sec

Abstract: A modular containment system, primarily for secondary containment of potentially hazardous materials, includes a series of interconnectable berm members which can be interlocked together to form virtually any desired containment perimeter. A sheet of flexible plastic material is laid over the containment area, and extends over the shoulders of the perimeter structure as a liner for the containment area. The liner is secured to the top of the perimeter structure, such as by a snap-in tube arrangement. For high stability of the perimeter structure, the modular berm members are hollow, formed of plastic material, to be filled with water or sand, as well as having a low, wide profile.

Abstract: An above-ground swimming pool wall construction is disclosed. The pool wall is located and secured in, top and bottom connectors in combination with upright or vertical posts. Top and bottom tracks protect the upper and lower edges of the pool wall and secure it in receptacles in the top and bottom connectors. A finishing cover or cap is provided to cover each upper connector assembly. The track and its associated receptacles on the connectors have a generally triangular configuration in cross-section so as to be captured and located more securely in the connectors. The triangular shaped track may also include a liner bead retainer. The cap design is such that it is fixed in position with no visible means of securement.

Abstract: A modular perimeter skimming gutter and retaining wall unit for swimming pools with exposed exterior longitudinal welds, for pool construction by simple bonding together of a plurality of modular units in the shop or on-site, disposed about the perimeter of a swimming pool as the retaining wall of the swimming pool,the modular unit comprising three bonded-together metal sheet portions:The first sheet being bonded in an exterior bond to the second sheet along a wall of the open first conduit; and to the second sheet along a wall of the closed second conduit, thereby completing the walls of the closed second conduit;the third sheet being bonded to the second sheet in exterior bonds along a wall of the open first conduit, thereby with the first sheet completing the walls of the open first conduit; and along a wall of the closed second conduit, thereby completing the walls of the closed third conduit.

Abstract: An apparatus and method is disclosed for an improved swimming pool comprising a base forming the bottom of the pool. A sidewall extends about a peripheral edge of the base. The sidewall has an inner surface facing an interior of the pool, and an outer surface facing an exterior of the pool. An inner coating is disposed on the inner surface of the sidewall and on the base for affixing the sidewall to the base and for forming an interior surface for the pool. The sidewall comprises a plurality of flexible panels, which define a plurality of vertical joints. A plurality of upright supports are affixed to the outer surface of the sidewall at the vertical joints. A plurality of contour panels are affixed to the outer surface of the sidewall proximate the vertical joints and define a plurality of cavities therebetween. The cavities contain the upright supports. A plurality of vertical support columns are molded within the cavities for supporting the sidewall and integrally joining the flexible panels.

Abstract: An above-ground outdoor circular swimming pool having the typical outer circumscribing support walls with a through-space as symbolic porthole-like window there is placed within space circumscribed by the outer circumscribing support walls, a water-retaining translucent or transparent liner mounted at and suspended circumscribingly from upper securing structure at the top of the circumscribing support walls. Thereby the secured and suspended transparent liner wall when containing water is pressed toward the porthole-like window, such that there is provided a line-of-sight view from each of the inside and the outside through the transparent liner. The liner itself if sufficiently rigid or sturdy in part or in whole, and/or alternatively a separate supporting transparent sheet-like transparent rigid and sturdy solid and/or mesh structure overlaps the through-space.

Abstract: A fitting assembly for use in swimming pools, spas, and the like with vinyl liners, comprises a fitting member which is mounted in an opening in the wall of the pool, either flush with the pool wall or with a flange extending over the interior of the pool wall near the opening. The fitting member has a recess in it about its periphery. The vinyl liner then is placed over the fitting member; and a clamp member, which has a predetermined thickness not greater than the depth of the recess, is secured in the recess of the fitting member over the vinyl liner to clamp the vinyl liner between the clamp and the recess of the fitting member. This provides a flush mount or nearly flush mount of the fitting member with the vinyl liner of the pool.

Abstract: A portable spa apparatus comprising a peripheral side wall composite and a floor, which combine to define a tub capable of accommodating at least one occupant and a quantity of liquid. The peripheral side wall composite has an inner liquid-impervious layer; a central layer of flexible, foamed thermoplastic material providing insulating capabilities; and an outer layer of reinforced material. The outer layer has properties that render it capable of withstanding stresses resulting when the spa is partially filled with liquid. Moreover, the peripheral side wall, when constructed, is capable of standing generally upright when the tub is partially filled with liquid. The peripheral side wall and floor are of such construction to be portable and collapsible. Methods for making and using a portable spa apparatus are also disclosed.

Abstract: A group of modular planar structural foam sections are laid on the ground directly underneath the liner of an above-ground pool. The foam panels are cut so that they fit tightly side-by-side covering all areas within the frame. The joints between the panels are then filled by caulking and taped over to smooth the top surface of the joints. The result is an improved pool underlayment system which provides many advantages, including cushioning of swimmer impact to help prevent shallow diving injuries.

Abstract: A swimming pool wall is constructed with a partially removable form. The form includes a removable panel for molding an inside surface of the pool wall and a continuous sheet for molding an outside surface of the wall. Sleeves are attached to an outer face of the panel for suspending the panel from partially buried stakes. A series of regularly spaced uprights support the continuous sheet. Braces carried by the uprights space the continuous sheet apart from an inner face of the panel, forming a cavity for pouring the swimming pool wall. Fasteners extend through mounting holes in the panel for removably attaching the panel to the braces.

Abstract: A concrete form and a pool wall and deck support system is disclosed. The pool wall may be formed of steel, plastic, aluminum or wood and has a plurality of wall panels secured together in end-to-end relation to define the perimeter of the structure. Wall supports or brace structures fabricated from non-compressible material such as concrete are attached to, and support both the wall of the pool and the perimeter deck therearound. The pool wall, coping and deck are supported by the top of the concrete brace structure. In a preferred embodiment, the brace structure is fabricated from pairs of nestable forms made from a suitable material such as corrugated cardboard and are located beside the pool walls, reinforcing bars are attached to the pool walls and interconnect the latter with the walls and the forms are filled with concrete and are so structured as to have the concrete engage the flanges of the pool wall panels.

Abstract: Tub apparatus comprising a foamed, resiliently compressible, plastic tub wall having an inner side and an outer side, the tub having an interior to receive liquid, and ports extending through the side wall; a plastic pack having a cavity formed therein; a pump unit received in the cavity and protectively enclosed by the plastic pack; and tubular duct structure connected with the pump unit and extending from the cavity to the ports for circulating liquid between the tub interior and the pump unit.

Abstract: An improved swimming pool construction and cover includes a swimming pool cover laid on the water of the pool and having a marginal edge provided with one component of the two component elongated locking member. The second component of the locking member is disposed in the pool coping or deck edge accessible at the pool interior for engagement by the locking member component on the pool cover. The locking component associated wit the pool is provided in a retrofit configuration by securing a locking component to a vinyl liner bead lock secured in the vinyl liner bead channel in a pool coping. In a new vinyl-lined pool construction, a coping is provided with a secondary channel with one component of the cover locking member secured therein. In a gunnite pool, a channel is formed in the deck edge and a component of the releasable cover locking member is secured in the channel for securement of the pool cover thereto. Apparatus and methods are disclosed.

Abstract: An inlaid tile gutter system for use in swimming pools contains a channel, braces mounted atop the primary gravity flow channel and stiffeners mounted on the poolside of the channel provide a relatively stiff gutter system capable of withstanding deformations due to excessive loadings and impact. Ferro concrete material may be placed within channels formed by the vertical stiffeners to provide a support and a base upon which to set tile.

Abstract: A structural wall unit for retaining wall structures of in ground swimming pools, whereupon assembly of a plurality of wall units in series, a circuitous pathway is formed which defines the swimming pool shape. In accordance with one aspect of the present invention, each unit includes end surfaces comprising folded portions at the corners thereof for reinforcement of the wall unit, at least one of the surfaces being formed for engagement with a corresponding end surface of an adjacent unit. The units are fastened one to the other so as to form the circuitous wall structure. Each unit includes a base or lower wall for supporting the unit in an upright position and a gusset plate having apertures adapted for cooperation with matching holes on a pair of adjacent folded portions of an end surface, each of the folded portions being adapted to overlie the gusset plate.

Abstract: The spa pool (1) is constructed with a solid base and side walls (4), the spa pool having a soft interior. The water is contained in a vinyl liner (5), and between the liner (5) and the base and/or the side walls (4) there is positioned a layer of resilient material such as foam plastic material, or foam rubber.

Abstract: A break away clip releasably engageable with a wall depending from a swimming pool coping where the wall has a raised rib, and an edge of a pool cover where the edge has a retaining groove, the clip presenting in cross-section a pair of spaced apart legs adapted to releasably embrace the depending wall, the legs are connected at one end and one of the legs includes a retaining groove between the legs which is adapted to receive the rib presented by the depending wall of the swimming pool coping, the clip including a channel presenting a lip releasably engageable with the retaining groove of the edge of the pool cover.

Abstract: A swimming pool support structure comprises an elongate upright member having a longitudinal axis and a pivot attached at least indirectly to the upright member at one end thereof for defining an axis of rotation extending in a direction parallel to the longitudinal axis. An elongate top rail member is provided at an end with a connector for pivotably connecting the top rail member to the upright member at the pivot, while a fastener is provided for fixing the top rail member to the upright member upon the attainment of a desired orientation angle of the top rail member with respect to the upright member. A swimming pool incorporating the support structure is installed by erecting a first upright member at a predetermined location, pivotally attaching a first end of a first top rail member to the pivot pin of that first upright member, rotating the top rail member about the pivot pin until a first desired angle of orientation is attained between the top rail member and the bearing plate of the upright member.

Abstract: A modular seat unit to be incorporated into the perimeter wall of a swimming pool is provided. The modular seat is devised to afford a purchaser the option of incorporating the unit into a swimming pool by removing one or more modular wall panels which forming the perimeter of the swimming pool and substituting therefor and securing the seat unit into position in place of the omitted vertical wall panel or panels thereby integrating the seat into the perimeter of the swimming pool. The seat unit is provided with a console accessible to the seat occupant to locate controls such as for water flow from the swimming pool supply into the seat recess. The seating area is devised to include hydrotherapy air jets to produce therapeutic water turbulence. An adapter to hold the pole of an umbrella to shelter the seat occupant from the sun's rays and to function as a safety guard is also provided in the horizontal surface of the seat module. The construction provides a seat for an occupant to rest in the pool.

Abstract: A sandbox provided for indoor use consists of a sheet of fabric-like material having a collapsible wall about its perimeter such that, when the sheet is smoothed into a substantially flat horizontal condition, the collapsible wall stands in substantially vertical relation along the perimeter of the sheet. Thus, the smoothed out sheet and the vertical wall define a contained play area to hold sand. Preferably, the wall is formed of sections of a cushion-like material such as foam rubber covered by material such as that used to form the horizontal sheet. Thus the wall would be collapsible along the vertical folds defined at the junctions of the covered foam rubber sections. Interior to the perimeter of the sandbox, the upper surface of the sheet is fitted with a gathering mechanism, typically a drawstring laid out in circular fashion on the top surface of the sheet with a circular stretch of material covering the drawstring and fixed to the sheet.

Abstract: An apparatus and method is disclosed for an improved swimming pool comprising a base forming the bottom of the pool. A plurality of upright supports are disposed about the base with a side wall sheet being affixed to the plurality of upright supports. The side wall sheet has an inner surface and an outer surface. An inner coating is disposed on the inner surface and is disposed on the base for affixing the side wall sheet to the base and for forming an interior surface for the pool. An outer coating is disposed on the outer surface for affixing the side wall sheet to the plurality of upright supports.

Abstract: A method of constructing arcuate cement stairs in a pool includes (a) attaching a first arcuate form having a first form radius to the wall of the pool; (b) attaching a second arcuate form having a second form radius smaller than the first form radius to the wall in a plane above the first arcuate form; (c) attaching to the wall of the pool, inwardly of the first form, a first arcuate support band having a radius generally corresponding to the first form radius, the first band remaining in place when the first form is removed, and attaching to the wall of the pool, inwardly of the second form, a second arcuate support band having a radius generally corresponding to the second form radius, the second band remaining in place when the second form is removed; (d) pouring a curable cement-containing material into the space between the forms and the wall to form stairs; and (e) removing the arcuate forms to provide the stairs.

Abstract: A channel-like member defines a track section for supporting elongated lengths of fiber optic lighting about the interior perimeter wall of a swimming pool. The member is comprised of a polymeric composition with which there is integrally formed an anchor arm extending rearwardly away from the track section. When mounting the member, the anchor arm is positioned to extend overlying the pool edge to within the unfinished decking area in which decking mortar or aggregate is to be introduced. Receipt and curing of the decking mortar or aggregate along with the weight of the decking permanently secures the anchor arm and member at the selected mounting location. Also included integrally of the track body is a flashing ledge secured laterally rearward therefrom to be positioned horizontally intervening between the decking and the pool wall.