Abstract: AN AQUATIC raisable floor apparatus includes a platform and a buoyancy chamber in the platform with a top and a bottom. The chamber is closed on the top and open to the pool near the bottom. There is an air supply connected to the chamber. A valve is capable of venting the chamber to atmosphere. The platform is raised by filling the chamber with air from the air supply and the platform is lowered by venting air from the chamber to atmosphere through the vent. There is also a guide mechanism for guiding the platform as the platform is raised or lowered. The guide mechanism includes vertically extending racks. Rotatable pinions engage the racks.

Abstract: A swimming pool includes a swimming tank, which stores water for swimming; and an upstream tank, which stores water to be supplied into the swimming tank. The pool further includes a downstream tank, which stores the water streamed from the upstream tank through the swimming tank; and a pump, which forces the water stored in the downstream tank to the upstream tank. The water in the upstream tank has an energy head that is higher than the water in the swimming tank so as to generate water current in the swimming tank.

Abstract: A device for securing a light to an above-ground pool is provided having a web for attachment to a lip of the pool and a sheath for retaining at least one light or an entire lighting strip along the periphery of the pool. In one embodiment, the device has a bezel portion including the web and the sheath, and a clip portion which attaches to the bezel portion and for securing the device to the lip of the pool. The bezel portion can be provided with a slot and the clip provided with a base which fits into the slot and can be snappingly retained within the slot.

Abstract: A swimming pool includes a swimming tank, which stores water for swimming; and an upstream tank, which stores water to be supplied into the swimming tank. The pool further includes a downstream tank, which stores the water streamed from the upstream tank through the swimming tank; and a pump, which forces the water stored in the downstream tank to the upstream tank. The water in the upstream tank has an energy head that is higher than the water in the swimming tank so as to generate water current in the swimming tank.

Abstract: A height adjustable false bottom for multi-purpose pools. The apparatus has a device for adjusting the height of the false bottom, where a plurality of supporting legs, which are pivotable and have a variable length, are used for the height adjustment. The supporting legs are preferably formed as rotatable spindle drives.

Abstract: A swimming pool screen enclosure-supported water misting and cooling apparatus, the screen enclosure including tensioned fabric screen panels held between spaced apart elongated upright and overhead rigid frame members. The apparatus includes a plurality of water misting nozzles each of which discharge water under pressure as a very fine mist. A flexible water tubing is operably connectable to each misting nozzle for delivering pressurized water to each misting nozzle, the water tubing being connectable to a pressurized water source. A plurality of retaining clips are each connectable to an overhead frame member to support the misting nozzles and water tubing overhead of the swimming pool and adjacent deck area within the screen enclosure whereby mist discharging from the misting nozzles is distributed downwardly to cool occupants within the screen enclosure without substantially wetting any of the screen enclosure contents.

Abstract: A combination water slide and pool including an inflatable elongated sliding sheet. An elevation ramp is secured to a lower surface of the sliding sheet inwardly of a short inner edge thereof. The elevation ramp has its apex at the short inner edge of the sliding sheet. A pool portion is secured to the short inner edge of the sliding sheet. The pool portion is comprised of a peripheral side wall.

Abstract: A swimming pool is provided that is filled with water containing salt to give buoyancy to a swimmer and to enable the swimmer to effortlessly float. The pool is formed of two or more sections with each section filled with the swimming pool water having differing densities of salt to provide for different buoyancy levels therein. Further, the water in the swimming pool also contains magnesium chloride, calcium sulfate, potassium sulfate and magnesium bromide.

Abstract: A system and method are set forth for decreasing the levels of total dissolved solids (TDS) in a swimming pool and for conserving water. An amount of water is drawn from the swimming pool water circulating system and delivered to a demand such as irrigation or used to supplement the potable water system. If evaporative coolers are present, their waste water discharge can likewise be conserved and used to fill a demand such as irrigation.

Abstract: An above-ground swimming pool base structure for supporting the swimming pool. The base structure comprises a plurality of base units so that when linked together, they form a shape matching the contour of the above-ground swimming pool. Each base unit comprises an upper and lower surface. The lower surface is adapted to rest on the ground and the upper surface is adapted to receive a bottom portion of the above-ground swimming pool wall. The base units are made of a flexible and compressible material that can withstand pressure caused by temperature variations.

Abstract: An inflatable swimming pool fabricated from polyvinylchloride or similar materials, and having supporting netting, preferably fabricated from a tough, durable synthetic such as nylon cord. The netting is disposed under the floor of the pool and extends over the outside vertical side wall of the pool to provide support against deformation when the pool is filled with water. A safety cover, fabricated from nylon, includes a number of hooks that attach to the upper cord of the netting to secure the cover in position when the pool is not in use.

Abstract: Open pool forming a reservoir for liquid, especially swimming pool, of the out-of-ground type with a flexible wall (2) and an inflatable tubular chamber (3) constituting a floating ring which defines the opening of the pool, characterized in that, in the service position of the pool (1), the upper peripheral region (5) of the flexible wall (2) adjoining the tubular chamber (3) is inclined, relative to the remaining underlying part of the wall, towards the inside of the pool, by virtue of which the upper peripheral region (5) forms a frustoconical reentrant rim underlying the tubular chamber (3) and capable of holding the tubular chamber (3) up when the latter is subjected to a downwards force.

Abstract: An inflatable swimming pool having a plurality of vertical interior supporting webs extending between and connecting the inner and outer vertical side walls of the pool. The side walls and connecting webs are fabricated from polyvinylchloride or similar materials. A supporting shell, preferably fabricated from a tough, durable synthetic fabric such as nylon, includes a top gusset, a side wall, a bottom gusset, and a reinforcing bottom wall for added strength. A safety cover, also fabricated from nylon, includes a number of hooks that attach to loops on the shell to secure the cover in position when the pool is not in use.

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: 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: 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: A compact, free-standing swimming pool (900) adapted for vigorous exercising by a harness-restrained swimmer; the pool including a surrounding gutter (903) behind a skimming sill (904) and in front of a ledge, so that most of the water splashed about is retained and so that waves are largely absorbed by falling over the sill and not returning. Baffles (917) placed deep within the pool can break up "slop" type waves. The gutter is emptied by drain pipes (916) leading to a pump (910) for recirculating the water shifted by the swimmer into the gutter back through conduits (914) into the pool. The pump instead recirculates pool water when gutter water is not present. Optional heating, filtration, chlorination, and recirculation current devices (912, 913) may be included.

Abstract: A bathtub comprises: a tub body (1) for accumulating bath water; a bath water treating section for activating the bath water; and a water circulating section (2) for forcedly circulating the bath water between the tub body and the bath water treating section. The bath water treating section is a magnetic water treating section (3) and/or a ceramic ball water treating section (4) to activate the bath water in a wide range.

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: A portable device for generating water current in a swimming pool is disclosed. The purpose is to provide a current against which a person can swim, for exercise or for pleasure. The invention provides an anti-cavitation plate for the suppression of whirlpool currents and the smoothing out of the bulge and waves which normally occur downstream of the propeller and preferably also includes a multi-finned enclosure housing the motor and propeller and providing for the encouragement of the development of laminar flow in the stream exiting from the device for use by the swimmer.

Abstract: A floating swimming pool apparatus includes a rigid water retaining portion which includes rigid walls and a rigid floor. A peripheral deck portion is connected to top portions of the rigid walls, and a plurality of individually adjustable drum-like container are connected to the deck portion. Each of the drum-like containers includes a fill port through which a quantity of ballast material can be added to or removed from the drum-like container. The preferred ballast material is water. A layer of flotation foam material attached to exterior surfaces of the rigid walls and the rigid floor of the water retaining portion. Inner joists are connected to the deck portion proximal to the rigid walls of the water retaining portion. Outer joists are connected to the deck portion distal to the rigid walls of the water retaining portion. Each of the adjustable drum-like flotation assemblies is suspended from the deck portion by a suspension band connected to a respective inner joist and a respective outer joist.

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 swim tank slightly longer than a human and slightly wider than the maximum spread between fingertips is divided into upper and lower channels by polycarbonate or members extending across the width of the tank and having a rectangular outlet at the top front through which water is expelled. A vaned wheel at the rear is driven by an induction motor from a power source of controlled frequency.

Abstract: A swim-in-place pool has horizontal inner and outer circulating waterways arranged in such manner that a portion of the inner waterway coincides with a portion of the outer waterway. The non-coincident portion of the inner waterway then provides a swimming space. A plurality of impeller blades are suspended in a spaced series within the coinciding portion of the two waterways, each of the blades in its operative condition extending transversely of that waterway and occupying substantially all of its cross-sectional area. A power drive advances the blades in unison along the coinciding portion of the two waterways so that a rather fixed body of water is captured between each two adjacent blades and advanced therewith. A diversion structure adjacent the entry of the non-coincident portion of the inner waterway diverts a continuous flow of water in a relatively non-turbulent state into and through the swimming space.

Abstract: Synergistic antialgal compositions comprising substituted fluoroalkyl diphenylethers and a material selected from the group consisting of sodium hypochlorite, halodialkylhydantoin, n-alkyl dimethyl benzylammonium chloride, 2,2-dibromo-3-nitrilopropionamide, 2-bromo-2-nitro-1,3-propanediol, poly[oxyethylene(dimethylimino)ethylene(dimethylimino)ethylene dichloride], 3-iodo-2-propynylbutylcarbamate, sodium N-methyldithiocarbamate, 3-(3,4-dichlorophenyl)-1,1-dimethylurea, N-(phosphonomethyl)glycine and salts thereof, zinc bis(dimethyldithiocarbamate), p-tolydiiodomethylsulfone and fatty acid salt in ratios to each other which exhibit synergism are disclosed. Particularly effective combinations are based on oxyfluorfen as the diphenylether for use in protecting aqueous systems, such as latices and cooling water systems, from algal growth.

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: A manufactured building structure which can be transported via road travel. The structure includes a pool, spa, or the like which can be shifted between a travel position inside the structure to a lowered operative position when the structure reaches its destination.

Abstract: An above-ground frameless pool includes an elongated continuous base with a groove and a flexible sheet metal wall extending along the groove and being joined end to end to form a continuous wall. A coping extends about the top edge of the flexible wall, and the coping is an endless rigid member having a deep groove for receiving the top edge of the wall member in a snug manner in order to provide stability to the structure.

Abstract: A diverging section is defined in a lower water passage such that the outlet or downstream end of the diverging section becomes substantially equal to the width of a front curved water passage and to the height of an upper water passage and/or one or more guide vanes are disposed within the front curved water passage such that the outlet of each of water passages defined by the adjacent guide vanes is larger in size than the inlet thereof while the intermediate section of each passage is more enlarged in size than both the inlet and the outlet thereof.

Abstract: A molded plastics framework for an above-ground swimming pool which includes an endless molded base member having post sockets and a continuous cove integral therewith. The base member is made up of a plurality of identical molded modules which are connected together end to end to make up the endless base member. Molded plastics posts are secured in the base socket and extend upwardly in a spaced apart manner and receive an endless ledge made up of molded ledge segments connected end to end above the posts.

Abstract: In a circulating pool main body which defines a swimming pool or tank, a bottom partition wall and front and rear curved partition walls are disposed and spaced apart by a suitable distance from the bottom and the front and rear curved portions of the main body, thereby defining a water circulation passage having an outlet opening to an upper upstream end of the swimming tank or pool and an inlet at the upper downstream end of the swimming tank or pool so that only the upper water layer of the body of water in the swimming tank or pool is forced to flow. Furthermore, one or more swingable blades or vanes are attached to the outlet of the water circulation passage so that the flow rate of the flowing upper water layer in the swimming tank or pool and its direction may be varied.

Abstract: A continuous swimming apparatus is provided which minimizes power requirements by providing higher water velocity through that portion of the swimming area in which the swimmer is located, and lower velocity in unused portions of the tank. This water velocity gradient is produced by an arrangement of turning vanes in the recirculation paths of the apparatus. The water velocity may be varied by adjusting hydraulic fluid flow to hydraulic motors which drive propellers for circulating the water through the apparatus.

Abstract: A diverging section is defined in a lower water passage such that the outlet or downstream end of the diverging section becomes substantially equal to the width of a front curved water passage and to the height of an upper water passage and/or one or more guide vanes are disposed within the front curved water passage such that the outlet of each of water passages defined by the adjacent guide vanes is larger in size than the inlet thereof while the intermediate section of each passage is more enlarged in size than both the inlet and the outlet thereof.

Abstract: A body massaging apparatus of a circulated water current type to be used for lean figure beauty, comprises bathtub for storing therein water and accomodating therein at least one patient in a state close to a lying attitude with the face upward. The bathtub is formed with an inlet opening for introducing the water into the bathtub and an outlet opening for discharging the water from the bathtub. The inlet opening is positioned to confront the back of the patient's body, while the outlet opening is positioned opposite to the inlet opening. A circulating conduit for circulating the water through the bathub is disposed outside of the bathtub and connects the outlet opening with the inlet opening.

Abstract: An improved swimming pool construction of the kind capable of being erected, at least substantially, above ground on a substantially flat surface is provided. The swimming pool is of a construction whose modular components are prefabricated and delivered to the building site for assembly. A bracing member comprised of four cut pieces of standard construction lumber, and provided in pre-assembled modular form, provides load bearing qualities that afford sufficient strength without the need to supply any additional support means that are anchored in the ground. The swimming pool is fabricated from a plurality of wall panels that are secured end-to-end and form the periphery of the swimming pool and contain integrally formed flanges that retain the brace in position. The prefabricated pool delivered to the building site as a package, employs an arrangement of modular elements to provide a self standing swimming pool that can be assembled, using only hand tools to lock together the respective modular parts.

Abstract: A swim tank slightly longer than a human and slightly wider than the maximum spread between fingertips is divided into upper and lower channels by polycarbonate or members extending across the width of the tank and having a rectangular outlet at the top front through which water is expelled. A vaned wheel at the rear is driven by an induction motor from a power source of controlled frequency.

Abstract: A diverging section is defined in a lower water passage such that the outlet or downstream end of the diverging section becomes substantially equal to the width of a front curved water passage and to the height of an upper water passage and/or one or more guide vanes are disposed within the front curved water passage such that the outlet of each of water passages defined by the adjacent guide vanes is larger in size than the inlet thereof while the intermediate section of each passage is more enlarged in size than both the inlet and the outlet thereof.

Abstract: A portable child's pool which is suitable for use outdoors is provided having a pool play area suitable for a child to wade or sit in which is surrounded by a second water-retaining unit through which a child user would pass before entering the pool play area, wherein dirt and debris picked up on the feet of the child would be removed.

Abstract: A device adapted for preventing an automatic pool cleaner from being caught between an interior surface of a pool and a pool ladder having a pair of side rails and a plurality of steps therebetween. The device comprises a body adapted to be positioned between the pool surface and the ladder means for holding the body between the surface and the ladder. The body includes a pair of opposing side walls adapted to span and obstruct the space between the pool surface and the side rails to prevent the pool cleaner from movement into the space.

Abstract: The splash or landing pool of a water slide has an entry zone of substantially increased depth relative to conventional splash pools and a shallow exit zone leading from the entry zone. The entry zone is provided with a false floor at a depth such that a child can walk thereacross, the false floor being a close mesh net which can safely decelerate an adult who has improperly entered the pool from the slide.

Abstract: Apparatus is permanently mounted in the deck adjacent to a swimming pool and connected to the water in the pool to generate a laminar flow of water near the surface of the pool at a rate sufficient for exercise and therapy purposes. Two openings are provided in a wall of the pool, one near the surface and one near the bottom. The openings are connected by a flow conduit which includes an arcuately curved section and a straight section, the latter connected to the upper opening. Diffuser vanes are provided along the flow conduit and in the upper opening. A flow generating means, including a rotating impeller disposed within the flow conduit, draws water in through the lower opening, passes it through the flow conduit and past the diffuser vanes, and discharges it through the upper opening as laminar flow.

Abstract: A diving pool allowing scuba diving to be easily and safely enjoyed, which comprises a pool bottom progressively becoming deeper from its periphery towards its center, a tower constructed on the pool bottom at a central deepest area and rising to a level above the pool surface, an artificial island formed at a level of the pool surface around the tower, and a deck above the level of the pool surface around the tower; wherein the diving pool can be further equipped, if desired, with a water stream generator adapted to generate a water stream and a wave generator adapted to generate waves in the pool.

Abstract: A swim-in-place pool has an inlet opening to the swimming area, which is comparable in width and height to the space that would be occupied by a swimmer's body. Water is driven through the inlet opening at a velocity which is substantially constant throughout the cross-sectional area of the opening.The illustrated apparatus includes a housing providing an annular cavity within which a circular water advancing means is revolvably disposed. The swimming space lies essentially along a diameter of the annular cavity. The inlet opening is provided at one end of the swimming space for receiving water from the annular cavity, and an outlet opening is provided at the other end to return water to the annular cavity.

Abstract: A reservoir assembly (10) which has transversely extending frame assemblies (11) which support opposed side walls (12/12a). The frame assemblies (11) each have wall supporting members (15) integral with a relatively lightweight base member (16) which extends beneath the bottom wall of the reservoir. A pressure pad (18) disposed centrally above the base member (16) and beneath the bottom wall prevents upward buckling of the base member (16).

Abstract: The invention is a reservoir for placing in a fixed position on the ground, for example a swimming pool or a storage tank for liquid and/or solid (bulk) goods having little or no cohesion, for example crop products, coal, manure, spreading salt and the like, having at least a bottom and an upright wall connecting thereto which is resistant to outwardly directed pressure. The invention further provides to this end a reservoir of the type referred to above which displays the feature that the upright wall consists of a number of vertical piles placed in a closed configuration at intervals from one another, a vertical wire mesh arranged between these piles and a bottom element extending on the bottom, on which element an upright wall part is formed or arranged resting against the inner side of the said wire mesh.

Abstract: This invention is directed to a novel hybrid type swimming pool for personal use which is well suited to the confined spaces of private yards and well adjusted to varying land contours, and the unique construction is specifically adapted to take advantage of semi in the ground placement of the pool so that the base or the lower portion of the pool where the hydrostatic pressure is the greatest is supported by the ground itself. The top of the pool is framed to provide strength against different pool stresses. Thus the novel construction technique for the first time permits low cost construction of an exercise pool, a facility needed by a large portion of the population at a price affordable to them.

Abstract: The specification describes the combination of a unitary water container or pool and a pair of play balls, the pool having a generally planar bottom wall and a peripheral rim surrounding the bottom wall and extending upwardly therefrom, the peripheral rim being formed in the shape of an animal and including recesses defining eye sockets, the play balls being shaped and dimensioned to be removably received in the recesses and arranged to have iris and pupil defining markings thereon.

Abstract: A swimming pool, of the type having a sectionally constructed wall extending about and supporting a plastic liner, incorporates in the wall a capability of forming a wide variety of swimming pools of different shapes and sizes. Disclosed is a wall system which basically comprises a relatively small number of different types of sections. Each section has a flat web and side flanges disposed at selected obtuse or acute angles to the plane of the web. The angles incorporated in each section differ from those of the remaining sections. In this way, by abutting against each other selected sections, and by utilizing a selected number of such sections along different portions of the periphery of a swimming pool, it becomes possible to provide an almost infinite variety of swimming pool shapes and sizes.

Abstract: A submersible bilge pump is used within a tub to provide a Jacuzzi-type jet spray. A mounting assembly enables the bilge pump to be located below the water in the tub, yet the mounting assembly allows for effective mounting to the tub to provide the water jet type action. The mounting assembly also allows for the submersible bilge pump to be rotatably fastened to the tub to provide a whirlpool type action when desired.

Abstract: A spa or bath is disclosed having a molded shell with a filter cavity molded therein, the cavity being proportioned and arranged to receive a filter, and the cavity further being open inwardly and upwardly of the shell, thereby simplifying removal and insertion of the filter.