Abstract: A swimming pool drain and sump assembly with a toroidal drain housing that includes a lower section with a drain outlet port extending through the lower section wall and a continuous annular channel that loops back upon itself, and an upper section supported upon the sump base only along the inner wall, cantilevered over the sump base from a lower edge of the sump cover to an upper edge of the sump cover. The lower section and the upper section form an annular, continuous, uninterrupted, single orifice drain entrance channel between a top edge of the outer wall and the upper edge of the top piece. Some embodiments include a continuous, one-piece blockage tray insert adjustably positioned within the drain entrance channel and an access port cover within an access port that is a continuous opening with the drain entrance channel.

Abstract: A housing for an in-floor swimming pool cleaning nozzle includes a first end with connection lugs configured to receive and engage corresponding lugs on an in-floor swimming pool nozzle, and a second end with a wall extending axially with a leading edge having a thickness that narrows from the leading edge toward a ledge. The thickness narrows due to a beveled outer surface of the wall and presents a smaller leading edge that shows less than a non-beveled leading edge when placed in a floor of a swimming pool.

Abstract: A swimming pool drain and sump assembly with a toroidal drain housing that includes a lower section with a drain outlet port extending through the lower section wall and a continuous annular channel that loops back upon itself, and an upper section supported upon the sump base only along the inner wall, cantilevered over the sump base from a lower edge of the sump cover to an upper edge of the sump cover. The lower section and the upper section form an annular, continuous, uninterrupted, single orifice drain entrance channel between a top edge of the outer wall and the upper edge of the top piece. Some embodiments include a continuous, one-piece blockage tray insert adjustably positioned within the drain entrance channel and an access port cover within an access port that is a continuous opening with the drain entrance channel.

Abstract: A sump for a swimming pool or spa includes a grate having an elongated slot for inflow of water at a low velocity high flow rate. A housing of relatively large capacity includes an outlet for conveying water to an oversized suction line to maintain the low velocity high flow rate to the junction with a conventionally sized standard suction line in fluid communication with a suction pump. A bypass line in fluid communication with the water in the pool or spa discharges water into the housing when the slot is sufficiently covered to prevent satisfying the flow rate into the suction line demanded by the pump and thereby prevent a level of suction at the slot sufficient to entrap clothing or a body part of a swimmer against the grate. The grate, a frame supporting the grate on the housing and the housing are devoid of elements that might cause entanglement of hair drawn into the sump.

Abstract: A plurality of incrementally rotating nozzles are mounted in the bottom and side walls of a swimming pool to provide bursts of water and channel in a cascade manner debris toward one or more outlets disposed in the bottom of the pool.

Abstract: A hydraulic suction fuse is mounted in a conventional debris collection trap of a swimming pool, spa or the like, to significantly reduce or eliminate any suction force on the bottom or side wall mounted drain of the swimming pool, spa or the like, as a result of the drain becoming essentially wholly covered by a body part of a person or other drain clogging article. Alternatively, the hydraulic suction fuse may be mounted in a compartment in line between the drain and a suction pump of a swimming pool, spa or the like. Thereby, a person captured by the suction force at the drain will be released and the person is free to move away from the drain essentially instantaneously upon contact with the drain. In one embodiment of the hydraulic suction fuse, the hydraulic suction fuse may be easily manually reset.

Abstract: A hydraulic suction fuse is mounted in a conventional debris collection trap of a swimming pool, spa or the like, to significantly reduce or eliminate any suction force on the bottom or side wall mounted drain of the swimming pool, spa or the like, as a result of the drain becoming essentially wholly covered by a body part of a person or other drain clogging article. Alternatively, the hydraulic suction fuse may be mounted in a compartment in line between the drain and a suction pump of a swimming pool, spa or the like. Thereby, a person captured by the suction force at the drain will be released and the person is free to move away from the drain essentially instantaneously upon contact with the drain. The hydraulic suction fuse is self resetting once inflow through the drain is no longer restricted.

Abstract: A hydraulic suction fuse is mounted in a conventional debris collection trap of a swimming pool, spa or the like, to significantly reduce or eliminate any suction force on the bottom or side wall mounted drain of the swimming pool, spa or the like, as a result of the drain becoming essentially wholly covered by a body part of a person or other drain clogging article. Alternatively, the hydraulic suction fuse may be mounted in a compartment in line between the drain and a suction pump of a swimming pool, spa or the like. Thereby, a person captured by the suction force at the drain will be released and the person is free to move away from the drain essentially instantaneously upon contact with the drain. In one embodiment of the hydraulic suction fuse, the hydraulic suction fuse may be easily manually reset.

Abstract: A sump for a swimming pool or spa includes a grate having an elongated slot for inflow of water at a low velocity high flow rate. A housing of relatively large capacity includes an outlet for conveying water to an oversized suction line to maintain the low velocity high flow rate to the junction with a conventionally sized standard suction line in fluid communication with a suction pump. A bypass line in fluid communication with the water in the pool or spa discharges water into the housing when the slot is sufficiently covered to prevent satisfying the flow rate into the suction line demanded by the pump and thereby prevent a level of suction at the slot sufficient to entrap clothing or a body part of a swimmer against the grate. The grate, a frame supporting the grate on the housing and the housing are devoid of elements that might cause entanglement of hair drawn into the sump.

Abstract: A method for cleaning a pool surface is carried out by structure having a protruding nozzle assembly mounted in a side wall of a swimming pool in communication with a source of water for ejecting through a nozzle of a nozzle housing a stream of water at a predetermined angle relative to the adjacent side wall surface. During each erection and retraction of the nozzle housing precipitated by initiation and cessation of water flow to the nozzle assembly, the nozzle housing rotates incrementally to provide a plurality of streams of water defining a fan-like area from each nozzle as such nozzle comes into fluid communication with an opening in a cover enclosing the nozzle housing. Each nozzle is canted to a different angle above the adjacent pool surface to assist in cleaning sloping parts of the side wall/bottom surface junction and to assist in cleaning any adjacent structures extending from the side wall.

Abstract: A hydraulic suction fuse is mounted in a conventional debris collection trap of a swimming pool, spa or the like, to significantly reduce or eliminate any suction force on the bottom or side wall mounted drain of the swimming pool, spa or the like, as a result of the drain becoming essentially wholly covered by a body part of a person or other drain clogging article. Alternatively, the hydraulic suction fuse may be mounted in a compartment in line between the drain and a suction pump of a swimming pool, spa or the like. Thereby, a person captured by the suction force at the drain will be released and the person is free to move away from the drain essentially instantaneously upon contact with the drain. In one embodiment, the hydraulic suction fuse is self resetting once inflow through the drain is no longer restricted. In another embodiment of the hydraulic suction fuse, the hydraulic suction fuse may be easily manually reset.

Abstract: The swimming pool floor or spa floor drain assembly of the present invention includes a drain body having a mouth positionable in proximity to the pool wall to serve as a fluid flow inlet, a spaced apart fluid flow outlet positionable below the mouth and a sidewall interconnecting the mouth with the outlet to define a fluid flow chamber. The cross sectional area of the fluid flow chamber decreases from the mouth to the base. A fluid-deflecting plug includes a comparatively large area top and a comparatively small area base. A sidewall interconnects the top and base to form the plug with a cross sectional area decreasing from the top to the base.

Abstract: A recessed incrementally rotating nozzle assembly is located in a wall or bottom surface of a swimming pool in fluid communication through a conduit with a source of water under pressure from a valve, which valve periodically releases water into the conduit. Each time water flows, a nozzle housing is raised to eject a stream of water. As the nozzle housing rises, it is incrementally rotated by a pin engaging a saw tooth member of a cam ring. Upon cessation of flow, the nozzle housing is retracted and during retraction the nozzle housing is further incrementally rotated by the pin engaging another saw tooth member of the cam ring. After a predetermined degree of angular rotation, a cam reverser slidably reorients protrusions guiding the pin into and out of the saw tooth members to cause the pin to be guided by the opposite side of the saw tooth members and thereby cause reversal of the direction of rotation of the nozzle housing.