Abstract: A multi-weir door assembly is coupled to a skimmer body near a front entrance of the skimmer body such that a flow of water received in the front entrance is incident on a front side of the multi-weir door assembly. The multi-weir door assembly comprises multiple weir doors that are rotationally coupled to the skimmer body by at least a first hinge assembly. Each of the weir doors has a respective buoyancy, and at least first and second weir doors of the multiple weir doors have first and second buoyancies that are different from one another such that the flow of water incident on the multi-weir door assembly affects the first and second weir doors differently in terms of an angular degree to which the incident flow of water causes the first and second weir doors to rotate about first and second axes of rotation, respectively.

Abstract: A multi-weir door assembly is coupled to a skimmer body near a front entrance of the skimmer body such that a flow of water received in the front entrance is incident on a front side of the multi-weir door assembly. The multi-weir door assembly comprises multiple weir doors that are rotationally coupled to the skimmer body by at least a first hinge assembly. Each of the weir doors has a respective buoyancy, and at least first and second weir doors of the multiple weir doors have first and second buoyancies that are different from one another such that the flow of water incident on the multi-weir door assembly affects the first and second weir doors differently in terms of an angular degree to which the incident flow of water causes the first and second weir doors to rotate about first and second axes of rotation, respectively.

Abstract: A pool drain or sump basin having elongated ring-shaped body, at least one and preferably a plurality of outlet ports about the ring-shaped body for allowing water to exit the drain, external peripheral flanges for mounting the drain, and an opening for allowing water to enter the drain, the ring-shaped body having an inner sidewall and outer sidewall, and open topside, and a closed bottom or floor closing off the bottom side of the body, bridging the gap between the inner sidewall and the outer sidewall, and creating a drainage channel. The body may have an optional cover configured as a removable or replacement cover with openings. The pool drain may have optional bridging elements and flow regulating elements for greater structural support and water flow regulation through the pool drain.

Abstract: A pool drain or sump basin having elongated ring-shaped body, at least one and preferably a plurality of outlet ports about the ring-shaped body for allowing water to exit the drain, external peripheral flanges for mounting the drain, and an opening for allowing water to enter the drain, the ring-shaped body having an inner sidewall and outer sidewall, and open topside, and a closed bottom or floor closing off the bottom side of the body, bridging the gap between the inner sidewall and the outer sidewall, and creating a drainage channel. The body may have an optional cover configured as a removable or replacement cover with openings. The pool drain may have optional bridging elements and flow regulating elements for greater structural support and water flow regulation through the pool drain.

Abstract: An installation tool for installing features and/or components involving a grommet onto a water containing structure assembly, and a method of use thereof, which facilitates controlled and precise application of an insertion force. The tool actively prevents or reduces the unintentional application of the insertion force onto anything surrounding the grommet. The tool, and a method of use thereof, may have an insertion force generating sub-system configured to mechanically drive a grommet-based component into the grommet, and an engagement sub-system configured to translate and impart the insertion force from the insertion force generating sub-system to the grommet-based component and the grommet. The tool may have a sturdy, stable, and slide-hammer configuration or a basic tamp configuration for use with a mallet. The slide-hammer may comprise an anvil sub-system and a hammer sub-system in a reciprocating configuration. A complimentary puller tool may be included.

Abstract: An installation tool for installing features and/or components involving a grommet onto a water containing structure assembly, and a method of use thereof, which facilitates controlled and precise application of an insertion force. The tool actively prevents or reduces the unintentional application of the insertion force onto anything surrounding the grommet. The tool, and a method of use thereof, may have an insertion force generating sub-system configured to mechanically drive a grommet-based component into the grommet, and an engagement sub-system configured to translate and impart the insertion force from the insertion force generating sub-system to the grommet-based component and the grommet. The tool may have a sturdy, stable, and slide-hammer configuration or a basic tamp configuration for use with a mallet. The slide-hammer may comprise an anvil sub-system and a hammer sub-system in a reciprocating configuration. A complimentary puller tool may be included.

Abstract: A light fitting and method for illuminating the exterior of spas, swimming pools, hot tubs, garden baths, and the like, the light fitting having a base component mounted through a spa wall; a lens or light diffuser on an exterior end of the base component; a light source on, in, or proximal to an interior end of the base component; a light clip for retaining the light source on, in, or proximal to the base component; a light shade located on or proximal to the exterior end of the base component; and an attachment plate for attaching the light shade onto the base component via a mounting support; the base component having a cylindrical hollow body having a hollow interior, a first end located within the spa wall, and a second end located proximal to the spa wall, with the mounting support being attached to the cylindrical hollow body.

Abstract: A light fitting and method for illuminating the exterior of spas, swimming pools, hot tubs, garden baths, and the like, the light fitting having a base component mounted through a spa wall; a lens or light diffuser on an exterior end of the base component; a light source on, in, or proximal to an interior end of the base component; a light clip for retaining the light source on, in, or proximal to the base component; a light shade located on or proximal to the exterior end of the base component; and an attachment plate for attaching the light shade onto the base component via a mounting support; the base component having a cylindrical hollow body having a hollow interior, a first end located within the spa wall, and a second end located proximal to the spa wall, with the mounting support being attached to the cylindrical hollow body.

Abstract: The present invention provides a system for water treatment. The system includes a chamber, a UV light source, and a housing. The chamber has an inlet for receiving ozone mixed water and a transparent portion configured to allow UV light to pass. The UV light source has a protective shell that comprises a first portion and a second portion, the first and second portions configured to pass UV light at a first and second wavelength, respectively. The housing having an air inlet and an air outlet, the housing configured to secure the UV source and to receive a portion of the chamber, wherein the UV source and the chamber is affixed to the housing such that the transparent portion of the chamber is exposed to the first portion of the protective shell, thereby exposing the ozone mixed water to UV light with the first wavelength, and wherein the second wavelength convert oxygen molecules from the air inlet into ozone molecules.

Abstract: The present invention provides a system for water treatment. The system includes a chamber, a UV light source, and a housing. The chamber has an inlet for receiving ozone mixed water and a transparent portion configured to allow UV light to pass. The UV light source has a protective shell that comprises a first portion and a second portion, the first and second portions configured to pass UV light at a first and second wavelength, respectively. The housing having an air inlet and an air outlet, the housing configured to secure the UV source and to receive a portion of the chamber, wherein the UV source and the chamber is affixed to the housing such that the transparent portion of the chamber is exposed to the first portion of the protective shell, thereby exposing the ozone mixed water to UV light with the first wavelength, and wherein the second wavelength convert oxygen molecules from the air inlet into ozone molecules.

Abstract: A closure assembly for pressure vessels comprising a hollow pressure vessel having an internal cylindrical surface, a cylindrical end plug slidably mounted in the pressure vessel and contacting the internal cylindrical surface, the internal cylindrical surface having a first continuous circular groove to receive a segmented ring which retains the cylindrical end plug in the pressure vessel, and the cylindrical end plug having a second continuous circular groove to receive an O-ring seal, the second continuous circular groove having a ramped bottom and two substantially vertical side walls.