An apparatus for sounding an audible alarm when an object, such as a child or a pet, falls into a pool. An elongated housing is secured to the pool such as by fastening it to a pool ladder, with a control head on one end above the water surface and the other, sensing, head below the surface. At least one reed switch is positioned at the lower end of the housing. An elongated permanent magnet is mounted in a support body typically a buoyant body fastened to a flexible but stiff strap so that one ...

A wave motion detector system for a swimming pool includes a transducer responsive to positive and negative pressure changes in swimming pool water and operative to generate corresponding electrical signals. Comparators are responsive to the electrical signals, and operative to generate a crest signal while the positive pressure exceeds a predetermined positive threshold level, and a trough signal while the negative pressure exceeds a predetermined negative threshold level. A band pass filter pr...

The pool cover is made of multi-layer light weight construction having a transparent top layer to permit sunlight to pass through and an opaque bottom layer for absorbing sunlight passing through the transparent layer. In addition, a plurality of pockets are formed in the opaque layer having air encapsulated therein. When in use, the opaque layer becomes heated by sunlight thereby transferring heat by contact to the body of water in the pool. The heated trapped air also serves to conduct heat to...

A tanning pool (10) comprising an elongated bed tray (12) to hold some cool water (14) therein. In a first instance, when the elongated bed tray (12) is placed upon the ground outdoors in sunlight and in a second instance, when the elongated bed tray (12) is placed upon a floor (16) within a building (18), under a tanning apparatus (20), a person (22) can lie down in the cool water (14) within the elongated bed tray (12) to get a tan in a fun, comfortable and safe manner.

A swimming pool alarm responsive to wave motion that will produce a signal when two waves exceeding a threshold level of amplitude are sensed within a preset duration of time. A transducer senses air or water pressure changes and produces electrical signals corresponding to the changes. A comparator system, connected to the transducer, receives the transducer signals and, if the signals exceed a preset threshold level, transmits a signal to the discriminator system. The discriminator times the s...

A pool filter with a housing having at least one opening for an inlet and at least one additional opening for an outlet, in which housing at least one filter pad in contact with its margins is arranged with both its sides freely accessible such that one side of the pad is connected to an inlet chamber and the other side of the pad to an outlet chamber, is configured for the purpose of easy adaptability to various filter capacity and fineness requirements and for easy handling and maintenance suc...

This invention relates to a pool skimmer which is adapted to remove floating fractions, such as floating debris, from the surface of water. The pool surface skimmer of the invention comprises a housing within which a strainer separates a high level inlet from a low level outlet. The inlet is adapted to float below the surface of the water by means of two or more flotation chambers defining, between them, one or more intake ports each closable by means of a gate which is adapted to allow the ingr...

An apparatus for sun bathing, which includes an inflatable floor portion substantially rectangular in nature for supporting the length of a user lying on one's back or stomach; a continuous inflatable side wall portion rising the height above the floor portion and attach integral thereto, the side portion having a head rest portion, likewise inflatable for allowing the user to rest his head on that portion of the head rest portion while placement upon the position within the apparatus. For purpo...

A pool cover is formed by a plurality of hexagonal pads which float separately on the pool surface and orient themselves to cover the majority of the pool service in edge to edge floating relationship. The pads can be removed from the pool and stacked together on top of each other up to for example 5 or 6 high with the top cover panel being shaped to define a seat or a table top surface. The seat is supplemented by a seat back structure which is snap fastened into place on top of the seating sur...

A self cleaning electrolytic chlorinator for swimming pools and water treatment plants comprises a low voltage D.C. power supply unit which cyclically reverses the polarity at the electrodes to shed accumulated deposits which plate out on the electrode surfaces. Damage to the delicate catalytic coating on the electrodes is prevented by stepping the applied potential from a maximum to a minimum value before changing polarity and then stepping the applied potential back to a maximum value.