# US 7,407,575 B2 · Filtering structure for swimming pool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,407,575 B2 - Document ID: US7407575B2 - Status: Granted - Kind: B2 - Application number: 10/491,177 - Filed: 2002-09-30 - Published: 2004-12-23 - Granted: 2008-08-05 - Earliest claimed: 2001-10-01 - Assignees: Piscines Waterair S.A.; Procopi S.A. - Inventors: Jacques Braun; Pierre Baysse; Pierre Le Guillou - Web page: https://patentgrep.com/patent/US7407575B2 ## CPC - E04H 4/1218: {Devices for removal of polluted water; Circumferential gutters} - B01D 35/027: rigidly mounted in or on tanks or reservoirs (B01D35/04 takes precedence) - B01D 35/0276: {Filtering elements with a vertical rotation or symmetry axis mounted on tanks or reservoirs} - B01D 35/26: Filters with built-in pumps {filters provided with a pump mounted in or on the casing (aquarium pumps or filters A01K63/04)} - E04H 4/1272: {Skimmers integrated in the pool wall} - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A filtering structure intended to be incorporated a vertical swimming pool wall has a filtering device and a pumping device with the pumping device having an electrical part, including an electric motor, and a hydraulic part equipped with a turbine. The filtering structure has a suction port facing towards a nominally horizontal access passageway partly submerged in water, and emerging towards a nominally vertical tank arranged thereunder. The filtering structure has a tank communicating with a nominally vertical column, partly in the upper part of which is arranged the hydraulic part. The electrical part is arranged above the level of the water to be treated and is contained in the nominally horizontal access passageway, while the hydraulic part is immersed in a volume of filtered water. ## Claims ### Claim 1 A filtering structure for incorporating in the generally vertical walls of a swimming pool basin, comprising means for filtering and means for pumping, said means for pumping including an electrical part and a hydraulic part equipped with a turbine, said electrical part including an electric motor, said structure comprising a suction port facing towards a generally horizontal access passageway partly submerged in water, and emerging towards a generally vertical tank arranged thereunder and wherein are arranged said means for filtering, said vertical tank communicating with a generally vertical-column, partly in an upper part of which is arranged said hydraulic part of the means for pumping, and wherein the electrical part of the means for pumping is disposed above the level of the water to be treated, contained in said generally horizontal access passageway while said hydraulic part of the same means for pumping is submerged in a volume of filtered water. ### Claim 2 (depends on 1) The filtering structure of claim 1, wherein said electric motor is supported by a flange forming one portion of a upper side of said generally horizontal access passageway. ### Claim 3 (depends on 1) The filtering structure of claim 1, wherein said electric motor is in a vertical position, substantially normal to said hydraulic part, and wherein said electric motor and said hydraulic part have a transmission therebetween that is performed by way of a vertical transmission shaft traversing the generally horizontal access passageway. ### Claim 4 (depends on 3) The filtering structure of claim 3, further comprising a casing arranged in the generally horizontal access passageway to protect said transmission shaft. ### Claim 5 (depends on 1) The filtering structure of claim 1, wherein said electric motor has an electrical component, which is disposed above the water, in an upper part of said generally horizontal access passageway. ### Claim 6 (depends on 5) The filtering structure of claim 5, wherein said electrical component is contained in a detachable cassette. ### Claim 7 (depends on 6) The filtering structure of claim 6, wherein said cassette can encompass at least part of said electric motor. ### Claim 8 (depends on 6) The filtering structure of claim 6, wherein said cassette accommodates electrical parts associated with a heating resistor and/or an automatic water treatment device, and wherein said heating resistor and/or automatic water treatment device are fitted on said cassette and placed in contact with water in said generally horizontal access passageway, said vertical tank and/or said vertical column. ### Claim 9 (depends on 1) The filtering structure of claim 1, wherein said electric motor is equipped with means for cooling comprising an open hydraulic circuit. ### Claim 10 (depends on 1) The filtering structure of claim 1, wherein said hydraulic part comprises an outlet connected via a backflow pipe to a backflow inlet laterally offset on either side of a suction port according to a desired hydraulicity to be conferred to the pool basin. ### Claim 11 (depends on 1) The filtering structure of claim 1, wherein said hydraulic part comprises two outlets connected via backflow pipes to two backflow inlets laterally offset on either side of a suction port, the individual operation of one of the two outlets or the simultaneous operations of two of said outlets permitting the selection of the hydraulicity of the pool basin. ### Claim 12 A filtering structure for filtering a liquid having a top surface, the structure comprising: a pumping means having an electrical part and a hydraulic part, said electrical part being disposed above the surface of the liquid and said hydraulic part being disposed below the surface of the liquid, wherein the filtering structure is incorporated in a wall of a basin, wherein the filtering structure is disposed near or is part of a generally horizontal access passageway in said wall, wherein said electric part is an electric motor, wherein said electric motor is in a vertical position, substantially normal to said hydraulic part, and wherein said electric motor and said hydraulic part have a transmission therebetween that is performed by way of a vertical transmission shaft traversing a generally horizontal access passageway.