Abstract: A battery operated portable hydromassage appliance including control circuitry which senses the voltage level of the battery. When the battery voltage is below a predetermined level, the control circuitry automatically shuts the unit off so that the battery may be recharged before irreversible damage to the battery occurs. Also included is a low frequency oscillator which in combination with the low battery detector applies a pulsing input to the motor to turn the pump motor on and off and accordingly create a pulsing effect at the hydromassage appliance output.

Abstract: Apparatus for intermittent delivery of a fluid under pressure wherein a plunger having a conduit is disposed in a housing for reciprocal, rotary motion and responsive to fluid pressure at the intake end, by means provided in the plunger pops out of the housing and rotates a pre-selected number of degrees. Means are provided to stop both rotary and axial movement simultaneously.

Abstract: An aerator for a spa, therapy pool, bathtub or the like is formed of a mixer body having side-by-side parallel air and water conduits and a mixture outlet port extending radially of the air conduit. A water jet nozzle extends from the water conduit into the air conduit to project water across the air conduit axially into the outlet port. A group of such mixers is connected to individual ones of a number of aerator nozzles that project through the tub walls of a spa or therapy pool and the mixer air and water passages are respectively connected to one another, in series, by pipes that extend between the mixers and circumscribe the tub.

Abstract: An outlet for use with spa pools or the like where water and air are mixed by a "Venturi Pump" to provide a water/air stream, the outlet having a direction control device for controlling the direction of the water/air stream, the "Venturi Pump" being located within the direction control device.

Abstract: A fluid jet device for removing foreign matter from a pool of liquid comprising a hollow substantially cylindrical housing including a housing channel formed therein, an elongated rotatably member including a convoluted spiral formed on the outer surface thereof disposed within the housing channel and a coupling device to rotatably mount the elongated rotatably member to permit fluid to pass rapidly through the convoluted spiral to cause a rotation of the elongated member continuously changing the direction of the fluid exiting the fluid jet device.

Abstract: A whirlpool system has a pair of channels which connect sources of water and air to a plurality of outlets in a water receptacle. Each of the channels is formed in a continuous piece of tubing which is connected to the outlets by a plurality of connector assemblies removably mounted to the tubing between the ends thereof. If the tubing is made from a thermoplastic material, the tubing may be inserted into a hot liquid bath and, after the thermoplastic material becomes sufficiently soft, bent into a desired shape or configuration.

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.