Abstract: The water level of an above-ground swimming pool is maintained at a predetermined level by a small tank attached to the edge of the pool. The tank bottom has an aperture for a conduit to the pool through the side wall thereof, whereby the level of the water in the tank is the same as the level of the water in the pool. The pressure sensor switch is designed to open when the water level in the pool falls below a predetermined amount, and to close when the water level is restored thereto. The pressure sensor switch is activated by the level of the water in the tank, but when open delivers water from the house line directly to the pool.

Abstract: A modular assembly for use in a swimming pool is described. This assembly integrates the technical components and accessories for swimming pools, including at least one stair, a horizontal submerged bathing portion capable of supporting a user while sitting or lying, a filtration vat enclosing a water filtration system for filtering water to and from the swimming pool into and out of the modular assembly, and a technical vat enclosing a system for pumping and water recycling for pumping and recycling water between the swimming pool and the modular assembly. The assembly of the present invention can also include additional accessories such as a foot bath, a bathing therapy system, a countercurrent swimming system, a submerged lighting system, and a shower. The entire module includes connections for water intake and water discharge for passage of water to and from the swimming pool, and electrical power connections for accessing electrical power.

Abstract: This installation allows the drive pump (16) to be connected directly to the main housing (1) of the installation, or remotely from said housing; it is provided with a simplified structure and comprises the removable assembly of a closed handgrip (35), for the user, which is attached to a strong base plate (27) intermediate the front surface (14) of the main housing (1) and a lightweight face plate (34). The pump (16) is attached to a plate (5) which is attached directly to the rear surface of the main housing (1) and is provided with tubular stubs (8 and 9) for the coupling of the discharge tube (10), which is connected to the orifice (11) and of the suction tube (12). The said plate (5) may also be attached by pipelines (21 and 22) to another smaller plate (18) which is then attached to the main housing (1), and which is also provided with tubular stubs (19 and 20).

Abstract: A portable spa having a vertically rigid side wall, and a flexible inner including inflatable seat chambers which may be connected in series for filling with a fluid and inflatable backrest chambers which are partially filled with fluid and air.

Abstract: A unitized hydrotherapy jet and pump assembly includes a housing having a mouth portion connected to and communicating through the wall of a hot tub, spa, bathtub, whirlpool or pool with the interior of the tub below the water line. In the mouth of the jet and pump assembly is a hydrotherapy jet nozzle outlet and a water inlet positioned adjacent to each other. A water pump within the assembly communicates between the water inlet and the jet outlet. A motor is connected to the pump to energize the pump for drawing water into the unit through the water inlet and expelling a stream of water back into the tub through the hydrotherapy jet.

Abstract: In a drainage system for maintaining a swimming pool cover drained of accumulated precipitation, a pump with its intake is disposed in a fluid trap defined by an upper surface of the swimming pool cover. A discharge port of the pump is disposed outside of the fluid trap. A sensor is disposed in a flow path of the pump for detecting the presence of fluid flow therethrough, while a clock unit is operatively connected to the pump for periodically operating the pump for a ten-second interval. A control circuit continues to operate the pump beyond the ten-second interval upon the detection by the sensor of fluid flow through the pump at the end of the ten-second interval. In that case, operation of the pump is terminated only upon a cease of fluid flow through the pump.

Abstract: Apparatus (42, 72) for filling a hose (36) with water (12) and simultaneously for expelling air from the hose while connected to the vacuum side of a pump (20) in preparation for cleaning debris from a swimming pool (10) without loss of the prime in the pump comprises a housing (44, 74) submergeable in the water and having a pair of chambers (46, 48 & 76, 78) respectively having inlets (58, 80) and outlets (64, 86), with the inlets being open to the water and the outlets being coupled respectively to the pump and to the hose. Impellers (54, 100 & 56, 102) respectively in their chambers are coupled together by a shaft (52, 98) in which a first of the impellers (54, 100) is driven by a second of the impellers (56, 102) when water is drawn by the pump past the second of the impellers. In one embodiment, elbow conduit (110) can be slid from a first position where water purges air from the hose to a second position where the hose is used to clean debris from the swimming pool.

Abstract: A compact portable unit for servicing and treating the water of a swimming pool. The unit has a front section and a rear section connected together by an upper section to form a saddle which is set over a side wall of the swimming pool. The front section is submerged in the water contained by the pool and contains a skimmer, a scummer, a filter, and a recycling outlet. The front section may also be provided with footholds, lights, and handrails. The rear section contains a pump and electrical apparatus for operation of the unit. The unit may be equipped with a water heater and is readily installed and removed.

Abstract: A filter includes a portable housing having upper and lower parts. A pump is mounted on the upper part. The lower part contains a filter unit operatively connected to the delivery of the pump, has an inlet opening for the pump suction, and is immersible in a body of liquid requiring filtration. Advantageously the upper part contains a drive motor for the pump and has mounting means for mounting on the edge of a swimming pool. An accessory may operatively be associated with the housing to form an openable cover. The accessory may be in the form of a table top, a diving board or a slide. The filter unit may include a plurality of filter bags connected in parallel via a delivery manifold to the pump delivery. Instead the plurality of bags may be arranged cascade fashion in series one inside another.

Abstract: A vacuum filter is provided for vacuum flow filtration through a filter bed of water from a swimming pool including flow from the pool and from the gutter of the swimming pool, and controlling water recirculation capacity to accommodate varying gutter flow, comprising a tank; a filter bed of particulate material in the tank; a first inlet line communicating the swimming pool with the tank for gravity flow into the tank and maintaining a predetermined level of water in the tank in relation to a level of water in the swimming pool, thereby providing a head of water for gravity backwash flow through the filter bed; a second inlet line communicating the tank with the perimeter gutter for the swimming pool for gravity flow into the tank; a third inlet line communicating the tank with the perimeter gutter for the swimming pool for suction flow into the tank; an outlet line communicating the tank with the water recirculation system; a pump drawing a vacuum downstream of the filter bed and recirculating filtered wate

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 solar heater for swimming pools is provided having one or more heating panels installable on a roof or the like and arranged to discharge into a pool equipped with an apron without need for disturbing or obstructing the apron. This is accomplished by the provision of an elevated bistable dumper adjacent the perimeter of the apron having a dispensing spout normally inclined upwardly but pivoting at intervals to discharge into the pool across the apron without obstructing it. Water to be heated is diverted from the pool filtering system to the solar heater via a pressure regulator and a solar responsive flow control.

Abstract: Swimming pool water level control apparatus includes a remote indicator for sensing the water level in a swimming pool and for turning on and off a water flow control valve to provide water for the swimming pool.

Abstract: An improved water-level control method and apparatus automatically maintains the water level in a pool by selectively filling or draining water as required during the period that the circulating system is not operating.

Abstract: A valve has a body with multiple openings and a rotary valve member rotatable in a body cavity to control flow through the openings. A fixed closure member extends over one of the body openings, and a valve member control extends through the closure. A drain passage has a first portion in the fixed closure and a second portion in the rotary valve member. Those portions are brought into registration when the rotary member is in one position of flow control.

Abstract: An improved swimming pool and water supply system characterized by a novel conduit or duct construction and arrangement which provides more efficient distribution of freshly filtered water throughout the pool. The duct means is also removably mounted in the bottom wall of the pool to provide ease of access for maintenance and repair.

Abstract: A vertically adjustable pool platform, for use in a swimming pool, means to vertically raise and lower the platform, and means connecting the platform to the means to vertically raise and lower the platform, the pool platform being buoyant to float on the surface of the water, and be constantly urged to float to the surface of the water, when submerged under water at a predetermined level, and the platform permits vertical passage of water therethrough.

Abstract: Tile construction for a swimming pool comprising an elongated tubular member having a longitudinal channel therein which can be filled with insulation material. The tubular member can have further separate channels with a plurality of orifices extending into the further channels and opening externally of the member. The orifices provide communication between the further channels and the exterior of the tubular member. The tubular member has a flat outer surface and the orifices open in the vicinity of the flat outer surface. A plurality of tubular members can be used to form the wall or bottom of the pool or a deck for the pool. The tubular member can have flanges with additional channels therein isolated from the other channels and which may or may not be provided with orifices for fluid flow. The tubular member can be constructed from a transparent resin material and the additional channels can have a liquid crystal coating for changing color with temperature change.

Abstract: A construction which permits existing swimming pools to be provided with a spa at low cost includes a removable partition which is mounted in the pool to define the space to be used as a spa. A special gasket forms a seal between the partition and the pool. Valves are installed in the existing pool suction pipe and pool return pipe to permit the flow to be diverted to the spa. No excavation is required to install the spa. An adjustable template is used to determine the proper size and shape of the removable partition. The pipe through which water enters the spa is provided at its end with a jet nozzle which includes a venturi for introducting air into the incoming stream of water.

Abstract: A spill-over type spa is disclosed for use with an existing swimming pool. Water enters the spill-over type spa in the usual manner, but is thereafter permitted to spill-over into the adjacent swimming pool via a transition section integrity formed with the spill-over spa. The transition section rests on an upper peripheral edge of the swimming pool, thereby permitting water within the spa to spill-over into the pool. The spa is placed adjacent an existing pool in a manner to preserve integrity of the existing pool wall, yet permit the spa to function with the pool.

Abstract: A spa construction for use by humans comprising a shell for containing water and having a well for receiving the feet of the user. A seat is provided adjacent the well upon which the user can sit. A side wall is provided against which the user can rest his back. A first pump is provided having an inlet coupled into the bottom portion of the shell for withdrawing water from within the shell and an outlet coupled to the shell above the seat for introducing jets of water into the shell. An air inlet is provided for mixing air into the jets of water introduced into the shell. A filter and heater housing is carried by the shell and has disposed therein filter and heater elements. An additional pump is provided having an inlet coupled to the shell for drawing water from the shell into the filter and heater housing and discharging the same through an outlet coupled to the shell.

Abstract: Tile construction for a swimming pool comprising an elongated tubular extruded member having a longitudinal channel therein, and provided with a plurality of orifices extending into the channel and opening externally of the member. The orifices provide communication between the channel and the exterior of the tubular member. The tubular member has a flat outer surface and the orifices open in the vicinity of the flat outer surface. The tubular member can extend lengthwise along the pool so as to form a lane. A plurality of adjacent parallel lanes can be provided for racing purposes. A pump is connected to the channel for circulating overflow water back into the pool via the channel and the orifices in the tubular member. A plurality of tubular members can be used to form the wall or bottom of the pool or a deck for the pool for receiving overflow water to recirculate the water back to the pool.

Abstract: A hydro-therapy machine includes a massage tank connected to a diaphragm pump by means of a pair of conduits with which communicate with apertures in the bottom and side walls of the tank.