US3625365A - Underdrain assembly for pool-type filter - Google Patents

Underdrain assembly for pool-type filter Download PDF

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US3625365A
US3625365A US836338A US3625365DA US3625365A US 3625365 A US3625365 A US 3625365A US 836338 A US836338 A US 836338A US 3625365D A US3625365D A US 3625365DA US 3625365 A US3625365 A US 3625365A
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hole
component parts
teat
underdrain assembly
underdrain
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US836338A
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John E Armstrong
Virgil Jacuzzi
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Jacuzzi Inc
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Jacuzzi Brothers Inc
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Assigned to JACUZZI INC., A CORP. OF DE A WHOLLY-OWNED SUBSIDIARY OF WALTER KIDDE & CO., INC. BY CHANGE OF NAME KIDDE, INC. A DE CORP. reassignment JACUZZI INC., A CORP. OF DE A WHOLLY-OWNED SUBSIDIARY OF WALTER KIDDE & CO., INC. BY CHANGE OF NAME KIDDE, INC. A DE CORP. NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: JACUZZI BROS., INC., JACUZZI WHIRLPOOL BATH, INC.
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Assigned to JACUZZI INC., A DELAWARE CORPORATION reassignment JACUZZI INC., A DELAWARE CORPORATION NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: JACUZZI INC., A FORMER DELAWARE CORPORATION
Assigned to JACUZZI INC. reassignment JACUZZI INC. NUNC PRO TUNC ASSIGNMENT EFFECTIVE AS OF 6-30-98 Assignors: JACUZZI INC.( A FORMER DELAWARE CORPORATION)
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/14Downward filtration, the container having distribution or collection headers or pervious conduits

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  • ABSTRACT An underdrain assembly for a swimming pooltype filter, involving a hub mounted on the lower end ofa central return flow column, and having a plurality of slotted radial arms, each of which is made up of one or more similar snap on sections and terminating in a snap on slotted terminal com ponent.
  • the slots enlarge inwardly to avoid clogging.
  • noncorrosive material such as plastic.
  • FIG. I is a view, partly in section, of a pool-type filter to which the present invention is directed, and illustrates an underdrain assembly of the present invention installed therein,
  • FIG. 2 is a fragmentary view, taken in the plane 22 of FIG. 1,
  • FIG. 3 is an enlarged view in section, taken in the plane 3- 3 of FIG. 2 and illustrating the manner of assembling the underdrain of the present invention
  • FIG. 4 is a view in section, taken in the plane 4-4 of FIG. 3,
  • FIG. 5 is a magnified view in section, of a small portion of the structure depicted in FIG. 4,
  • FIG. 6 is a plan view illustrating a locking means employed in assembling the component parts of the underdrain assembly of the present invention.
  • FIG. 7 is a view taken in the plane 7-7 of FIG. 6.
  • a pool-type filter involving a housing 1, supported with its bottom 3 above ground level by a skirt 5 encircling the lower end of the housing and affixed thereto.
  • All filter system flow connections 7 are mounted at the top of the housing, and these include a position selector valve assembly 9.
  • the valve assembly provides for flow to a filter bed 11, of water pumped from a pool for filtering, such water, after filtering, entering an underdrain 13 for return to the valve assembly 9 through a central return flow column 15, for discharge to the pool from which the water was initially drawn.
  • a stabilizing grid basket 17 mounted on the return flow column, above the level of the filter bed, serves to uniformly distribute the incoming water to the filter bed, thus to stabilize the filter material against mounding.
  • the present invention relates particularly to the underdrain assembly 13 which, in accordance with the present invention,
  • a hollow hub 21 having a central opening passage 23 for flow attachment to the lower end of the return flow column 15, and a plurality of radially located opening passages 25 for flow attachment to the hub, of a plurality of hollow, radially directed arms 27, each of which is closed at its extreme end, and provided with a plurality of narrow longitudinal slots 29, from one end to the other, all such slots permitting inflow of filtered water for return through the return flow column, and ultimately back to the pool.
  • Both the return flow column and the underdrain may be fabricated of plastic whereby the hub may be cemented to the return flow column by a suitable plastic bonding agent.
  • Each arm of the underdrain is formed of one or more standardized components 31 capable of being assembled end to end, to any desired length, with provision for assembling of the first of such components, to its position on the hub.
  • each of the standardized components preferably terminates at one end in a rather wide shallow rib 33 while at its other end, it is provided with an expanded collar 35 adapted to snugly receive the corresponding end rib 33 of another of such standardized components whereby to enable an assembly of a plurality of such components in end to end telescoping relationship.
  • each radical opening passage 25 in the hub is defined in part by an external ring 37 adapted to telescope into the end collar of the initial component of the arm assembly.
  • each end rib 33 has integrally formed thereon, at least one teat 39, and preferably two at diametrically opposite locations, while each end collar 35 is provided with correspondingly located holes 41 (FIG. 3) adapted to snugly receive such teats, to thereby lock adjacent components against separation.
  • each of the teats has a beveled front edge 43 while the edge of each collar 35 at the location of each hole, is formed to include an arch 45, thereby enabling each component to be snapped into locking engagement with the adjacent component, the flexibility and resiliency of the components being such as to permit of the necessary distortion to efiect such assembly.
  • Similar beveled teatsformed on each ring 37 of the hub provide for attachment to the hub, of the first component of an arm assembly in like manner.
  • Each arm is finished off by the addition of a hollow terminal component of tapered design which is closed at its small end, and like the previous components 31, this terminal component will be provided with a plurality of slots 49. However, these may be distributed about the complete circumference of the component.
  • each standard component 31 is formed with an inwardly directed shallow rib 51 while the terminal component is molded with a base collar 53 having an outer peripheral groove adapted to accommodate the inwardly directed rib 51, whereby to lock the terminal component in its assembled position.
  • the free or advancing edge 55 of the collar is beveled.
  • each component 31 is preferably predominently located on the underside thereof, in an area extending approximately 3/5ths of the circumference of the component, thereby inhibiting entrance of filter medium particles, and causing the water being filtered to penetrate deeper through the filter bed before gaining access to the underdrain.
  • a feature of the invention resides in the specific character of the slots 29 and 49, to discourage probable clogging thereof by such grains of the filter medium as may penetrate the slots.
  • the entrance to the slots in the outer surface of each of the arm components; as such slots would be exposed to the filter medium, is quite narrow and preferably smaller in width than the average grain thickness of the material forming the filter bed.
  • each slot as its passes through the wall of the component, gradually enlarges, and in the specific embodiment of the preferred form as illustrated in the drawings, each slot expands in two stages 57, 59, the first stage 57 at an angle of the order of 10, with the second stage enlarging at an angle of the order of 20.
  • the hub may be provided with a central lower opening passageway 61 adapted to receive a supporting sleeve 63 extending down to and resting on the floor 3 of the housing, and adapted to receive a drain fitting 65 extending through and sealed in such floor, and to which is connected a drain pipe 67 extending through the skirt 5, in which it is supported.
  • An underdrain assembly for a pool-type filter or the like having a central flow column comprising a hollow hub having a central opening for fiow attachment to such column, and a plurality of hollow arms connected to said hub in flow communication with said central opening, each of said arms including a plurality of elongated similar component parts, each of said similar component parts having a plurality of small openings in its sidewall to communicate the interior with the exterior thereof with one end of each of said component parts constructed and arranged to telescope with the proximate end of an adjacent component part, to snap locking means associated with the ends of the component parts for locking each component part to an adjacent part and for locking each arm to said hub to inhibit withdrawal of one from the other and enable assembling of said arms to varying desired lengths to match the capacity of the filter for which intended.
  • each of said teats having a beveled edge and that portion of the component part in advance of said hole being formed to include an arch to receive and guide the bevelled teat of an adjacent component to the proximate hole for locking purposes.
  • each of said similar component parts being of plastic and having an outside diameter at one end substantially equal to the inside diameter at its other end with the teat located at said outside diameter end and with the hole at said inside diameter end.
  • An underdrain assembly in accordance with claim 4 characterized by a second teat located diametrically opposite the first teat, and a second hole diametrically opposite the first hole.
  • each of said similar component parts being of plastic and having an outside diameter at one end substantially equal to the inside diameter at its other end with the teat located at said outside diameter end and with the hole at said inside diameter end.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

An underdrain assembly for a swimming pool-type filter, involving a hub mounted on the lower end of a central return flow column, and having a plurality of slotted radial arms, each of which is made up of one or more similar snap on sections and terminating in a snap on slotted terminal component. The slots enlarge inwardly to avoid clogging.

Description

United States Patent John E. Armstrong Weston, Ontario;
Virgil Jacuzzi, lslington, Ontario, both of Canada June 25, 1969 Dec. 7, 1971 Jacuzzi Bros., Inc.
Inventors Appl. No. Filed Patented Assignee UNDERDRAIN ASSEMBLY FOR POOL-TYPE FILTER 6 Claims, 7 Drawing Figs.
U.S. Cl 210/232, 210/279, 210/288, 210/289 Int. Cl Bold 23/20 Field of Search 239/350;
Primary Examiner-Samih N. Zaharna A!!orneyEdward Brosler ABSTRACT: An underdrain assembly for a swimming pooltype filter, involving a hub mounted on the lower end ofa central return flow column, and having a plurality of slotted radial arms, each of which is made up of one or more similar snap on sections and terminating in a snap on slotted terminal com ponent. The slots enlarge inwardly to avoid clogging.
PAIENTEU 0m: 1m: 3.6253 5 sum 1 or 2 FIG. 2
INVENTORS JOHN E. ARMSTRONG VIRG'L JACUZZI 6% 14 ATTORNEY PATENTED HEB 719m SHEET 2 UF 2 INVENTORS JOHN E. ARMSTRONG VIRGIL JACUZZI ATTORNEY UNDERDRAIN ASSEMBLY FOR POOL-TYPE FILTER Our invention relates to a swimming pool-type filter having a central return flow column, and more particularly to an underdrain assembly for such type of filter.
Among the objects of our invention are,
1. To provide a novel and improved underdrain assembly for a pool type filter,
2. To provide a novel and improved underdrain assembly which is self cleaning and not likely to clog during use,
3. To provide a novel and improved underdrain assembly formed of standardized component parts, so as to enable fabrication of an underdrain assembly of a desired capacity to satisfy the requirements of a given size filter,
4. To provide a novel and improved underdrain of light weight, noncorrosive material such as plastic.
Additional objects of our invention will be brought out in the following description of a preferred embodiment of the same, taken in conjunction with the accompanying drawings wherein FIG. I is a view, partly in section, of a pool-type filter to which the present invention is directed, and illustrates an underdrain assembly of the present invention installed therein,
FIG. 2 is a fragmentary view, taken in the plane 22 of FIG. 1,
FIG. 3 is an enlarged view in section, taken in the plane 3- 3 of FIG. 2 and illustrating the manner of assembling the underdrain of the present invention,
FIG. 4 is a view in section, taken in the plane 4-4 of FIG. 3,
FIG. 5 is a magnified view in section, of a small portion of the structure depicted in FIG. 4,
FIG. 6 is a plan view illustrating a locking means employed in assembling the component parts of the underdrain assembly of the present invention, and
FIG. 7 is a view taken in the plane 7-7 of FIG. 6.
Referring to the drawings for details of our invention in its preferred form, the same relates to a pool-type filter involving a housing 1, supported with its bottom 3 above ground level by a skirt 5 encircling the lower end of the housing and affixed thereto. All filter system flow connections 7 are mounted at the top of the housing, and these include a position selector valve assembly 9. In one position, the valve assembly provides for flow to a filter bed 11, of water pumped from a pool for filtering, such water, after filtering, entering an underdrain 13 for return to the valve assembly 9 through a central return flow column 15, for discharge to the pool from which the water was initially drawn. A stabilizing grid basket 17 mounted on the return flow column, above the level of the filter bed, serves to uniformly distribute the incoming water to the filter bed, thus to stabilize the filter material against mounding.
The present invention relates particularly to the underdrain assembly 13 which, in accordance with the present invention,
' basically involves a hollow hub 21 having a central opening passage 23 for flow attachment to the lower end of the return flow column 15, and a plurality of radially located opening passages 25 for flow attachment to the hub, of a plurality of hollow, radially directed arms 27, each of which is closed at its extreme end, and provided with a plurality of narrow longitudinal slots 29, from one end to the other, all such slots permitting inflow of filtered water for return through the return flow column, and ultimately back to the pool. Both the return flow column and the underdrain may be fabricated of plastic whereby the hub may be cemented to the return flow column by a suitable plastic bonding agent.
Each arm of the underdrain, except for the exposed end portion, is formed of one or more standardized components 31 capable of being assembled end to end, to any desired length, with provision for assembling of the first of such components, to its position on the hub.
Accordingly, each of the standardized components preferably terminates at one end in a rather wide shallow rib 33 while at its other end, it is provided with an expanded collar 35 adapted to snugly receive the corresponding end rib 33 of another of such standardized components whereby to enable an assembly of a plurality of such components in end to end telescoping relationship.
To permit assembling of such arm to the hub, each radical opening passage 25 in the hub is defined in part by an external ring 37 adapted to telescope into the end collar of the initial component of the arm assembly.
To secure these components in their final assembled position, each end rib 33 has integrally formed thereon, at least one teat 39, and preferably two at diametrically opposite locations, while each end collar 35 is provided with correspondingly located holes 41 (FIG. 3) adapted to snugly receive such teats, to thereby lock adjacent components against separation.
As a means to facilitate such assembly of the components, each of the teats has a beveled front edge 43 while the edge of each collar 35 at the location of each hole, is formed to include an arch 45, thereby enabling each component to be snapped into locking engagement with the adjacent component, the flexibility and resiliency of the components being such as to permit of the necessary distortion to efiect such assembly.
Similar beveled teatsformed on each ring 37 of the hub, provide for attachment to the hub, of the first component of an arm assembly in like manner.
Each arm is finished off by the addition of a hollow terminal component of tapered design which is closed at its small end, and like the previous components 31, this terminal component will be provided with a plurality of slots 49. However, these may be distributed about the complete circumference of the component.
To enable snap on attachment of such end component, each standard component 31 is formed with an inwardly directed shallow rib 51 while the terminal component is molded with a base collar 53 having an outer peripheral groove adapted to accommodate the inwardly directed rib 51, whereby to lock the terminal component in its assembled position.
To facilitate such assembly of the terminal component, the free or advancing edge 55 of the collar is beveled.
The slots in each component 31 are preferably predominently located on the underside thereof, in an area extending approximately 3/5ths of the circumference of the component, thereby inhibiting entrance of filter medium particles, and causing the water being filtered to penetrate deeper through the filter bed before gaining access to the underdrain.
Aside from the general nature of the underdrain as described above, a feature of the invention resides in the specific character of the slots 29 and 49, to discourage probable clogging thereof by such grains of the filter medium as may penetrate the slots.
In the first place, the entrance to the slots in the outer surface of each of the arm components; as such slots would be exposed to the filter medium, is quite narrow and preferably smaller in width than the average grain thickness of the material forming the filter bed.
Each such slot as its passes through the wall of the component, gradually enlarges, and in the specific embodiment of the preferred form as illustrated in the drawings, each slot expands in two stages 57, 59, the first stage 57 at an angle of the order of 10, with the second stage enlarging at an angle of the order of 20. Thus, not only is the resistance to flow of water reduced as the water gains access to the underdrain, but should any grains of the filter material gain access to the narrow entrance of a clot, it will readily become apparent, that such grains will enjoy freedom of movement with the inflowing water, and thus cannot become trapped to accumulate and clog the underdrain.
For draining purposes, the hub may be provided with a central lower opening passageway 61 adapted to receive a supporting sleeve 63 extending down to and resting on the floor 3 of the housing, and adapted to receive a drain fitting 65 extending through and sealed in such floor, and to which is connected a drain pipe 67 extending through the skirt 5, in which it is supported.
From the foregoing description of our invention, it will be apparent that the same fulfills all the objects thereof, and while we have illustrated and described the same in its preferred fonn, it will be further apparent that the same is subject to alteration and modification without departing from the underlying principles involved, and we accordingly do not desire to be limited in our protection of the specific details illustrated and described, except as may be necessitated by the appended claims.
lclaim:
1. An underdrain assembly for a pool-type filter or the like having a central flow column, comprising a hollow hub having a central opening for fiow attachment to such column, and a plurality of hollow arms connected to said hub in flow communication with said central opening, each of said arms including a plurality of elongated similar component parts, each of said similar component parts having a plurality of small openings in its sidewall to communicate the interior with the exterior thereof with one end of each of said component parts constructed and arranged to telescope with the proximate end of an adjacent component part, to snap locking means associated with the ends of the component parts for locking each component part to an adjacent part and for locking each arm to said hub to inhibit withdrawal of one from the other and enable assembling of said arms to varying desired lengths to match the capacity of the filter for which intended.
2. An underdrain assembly in accordance with claim 1, characterized by said snap locking means for locking each component part to the other, said locking means including at least one teat at a location on one of said telescoping component parts and a hole in the other in matching location when said component parts are in telescoping relationship, said hole being of a size to snugly receive said teat.
3. An underdrain assembly in accordance with claim 2, characterized by each of said teats having a beveled edge and that portion of the component part in advance of said hole being formed to include an arch to receive and guide the bevelled teat of an adjacent component to the proximate hole for locking purposes.
4. An underdrain assembly in accordance with claim 3, characterized by each of said similar component parts being of plastic and having an outside diameter at one end substantially equal to the inside diameter at its other end with the teat located at said outside diameter end and with the hole at said inside diameter end.
5. An underdrain assembly in accordance with claim 4, characterized by a second teat located diametrically opposite the first teat, and a second hole diametrically opposite the first hole.
6. An underdrain assembly in accordance with claim 2, characterized by each of said similar component parts being of plastic and having an outside diameter at one end substantially equal to the inside diameter at its other end with the teat located at said outside diameter end and with the hole at said inside diameter end.
II l i

Claims (6)

1. An underdrain assembly for a pool-type filter or the like having a central flow column, comprising a hollow hub having a central opening for flow attachment to such column, and a plurality of hollow arms connected to said hub in flow communication with said central opening, each of said arms including a plurality of elongated similar component parts, each of said similar component parts having a plurality of small openings in its sidewall to communicate the interior with the exterior thereof with one end of each of said component parts constructed and arranged to telescope with the proximate end of an adjacent component part, and snap locking means associated with the ends of the component parts for locking each component part to an adjacent part and for locking each arm to said hub to inhibit withdrawal of one from the other and enable assembling of said arms to varying desired lengths to match the capacity of the filter for which intended.
2. An underdrain assembly in accordance with claim 1, characterized by said snap locking means for locking each component part to the other, said locking means including at least one teat at a location on one of said telescoping component parts and a hole in the other in matching location when said component parts are in telescoping relationship, said hole being of a size to snugly receive said teat.
3. An underdrain assembly in accordance with claim 2, characterized by each of said teats having a beveled edge and that portion of the component part in advance of said hole being formed to include an arch to receive and guide the bevelled teat of an adjacent component to the proximate hole for locking purposes.
4. An underdrain assembly in accordance with claim 3, characterized by each of said similar component parts being of plastic and having an outside diameter at one end substantially equal to the inside diameter at its other end with the teat located at said outside diameter end and with the hole at said inside diameter end.
5. An underdrain assembly in accordance with claim 4, characterized by a second teat located diametrically opposite the first teat, and a second hole diametrically opposite the first hole.
6. An underdrain assembly in accordance with claim 2, characterized by each of said similar component parts being of plastic and having an outside diameter at one end substantially equal to the inside diameter at its other end with the teat located at said outside diameter end and with the hole at said inside diameter end.
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Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779387A (en) * 1971-10-20 1973-12-18 Ocean Protein Corp Filter
US3826375A (en) * 1971-07-19 1974-07-30 Universal Oil Prod Co Liquid-solids contacting chamber with spherical strainer means
US4094790A (en) * 1976-11-11 1978-06-13 Industrial Filter & Pump Mfg. Co. Distributor collector assembly
JPS5369452A (en) * 1976-12-02 1978-06-20 Ebara Corp Apparatus for collecting water of liquid treating equipment
US4169793A (en) * 1977-07-11 1979-10-02 Tolo, Incorporated Tank drain assembly for swimming pool filters
US4304667A (en) * 1979-02-23 1981-12-08 Framatome Filter for purifying a fluid containing ferromagnetic particles
US4416773A (en) * 1982-02-22 1983-11-22 Water Refining Company, Inc. Valve mechanism for multiple distributor fluid treatment system
US4509218A (en) * 1983-03-18 1985-04-09 Morgan Flotation Systems Drain pipes for emptying waveless waterbed mattresses
US4867874A (en) * 1986-12-31 1989-09-19 Robert Aubert Device for filtering water from an overflowing swimming pool, using an accumulating tank acting as a gravity filter
GB2233575A (en) * 1989-07-11 1991-01-16 Graver Co Underdrain strainer assembly
US5068033A (en) * 1990-05-10 1991-11-26 Hayward Industries, Inc. Underdrain assembly with pivotally-mounted and lockable laterals
GB2251194A (en) * 1990-12-28 1992-07-01 Fernando Martinez Mugica Filter for machine tool
GB2257378A (en) * 1991-07-10 1993-01-13 Mark Peter Nigel Fisher Water filter
US5203995A (en) * 1991-01-23 1993-04-20 Fernando Martinez M Filter for machine tool
US5584998A (en) * 1996-01-25 1996-12-17 H-Tech, Inc. Self-adjusting filter diffuser and method for assembling same in a filter housing
US5762785A (en) * 1997-05-29 1998-06-09 Aplister, S.A. Swimming pool filter
US5891335A (en) * 1996-01-04 1999-04-06 Agency Environmental, Inc. Filtration system with traveling plenum
US6048132A (en) * 1998-07-27 2000-04-11 Agency Environmental, Inc. Filter underdrain with prefabricated cells
GB2348829A (en) * 1999-03-12 2000-10-18 Mark Peter Nigel Fisher Hub for water recirculating system
US6605211B1 (en) 2000-10-06 2003-08-12 Jacuzzi Leisure Products One-piece underdrain for swimming pool filters
US20060124527A1 (en) * 2004-09-20 2006-06-15 Pentair Water Pool And Spa, Inc. Filter devices including a porous body
WO2008017817A1 (en) * 2006-08-08 2008-02-14 The Boc Group Limited Improvements in or relating to reaction vessels
US7341662B2 (en) * 2001-10-18 2008-03-11 Derek Colin Tolley Distribution and collection headers for a filter bed
EP1918251A1 (en) 2006-10-31 2008-05-07 Pentair Water Belgium BVBA A water distributor for a multiport valve, a multiport valve including said distributor and a filter including said valve
US20080230454A1 (en) * 2007-03-23 2008-09-25 Nibler David B Pool filter
US20080257807A1 (en) * 2003-04-10 2008-10-23 David John Parkinson Filtration Apparatus
WO2009059624A1 (en) 2007-11-09 2009-05-14 Pentair International Sarl Quick-release fitting assembly
US20100206795A1 (en) * 2006-06-23 2010-08-19 Chernoff Larry J Distributor for domestic water filters
US7794591B2 (en) 2007-03-23 2010-09-14 Zodiac Pool Systems, Inc. Pool filter
US20100229982A1 (en) * 2009-03-11 2010-09-16 Tadlock John W Fluid distributor and collection device with collapsible laterals and knuckles
US20110108144A1 (en) * 2009-11-09 2011-05-12 Anova Resources LLC Multi-port quick connect fluid treatment tank head
US7951293B2 (en) 2007-10-05 2011-05-31 Zodiac Pool Systems, Inc. Methods and apparatus for a pool treatment and water system
US20120138518A1 (en) * 2009-08-14 2012-06-07 Filippo Bussinelli Filtering system for swimming pools
US20130032517A1 (en) * 2011-08-05 2013-02-07 Renaud Benoit Joseph Unitary filter tank and an underdrain for filtering a body of water
US20130081984A1 (en) * 2011-10-04 2013-04-04 Paul M. Cordua Water filter system
US8516661B2 (en) 2009-04-29 2013-08-27 Zodiac Pool Systems, Inc. Retainer band for use in fluid-handling vessels
US9108126B2 (en) 2011-08-05 2015-08-18 Hayward Industries, Inc. Unitary filter tank and an underdrain for filtering a body of water
US20220088527A1 (en) * 2020-09-18 2022-03-24 Pall Corporation Branched filter and method of use
US20220258091A1 (en) * 2020-09-25 2022-08-18 Mark Henderson Pool filter assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627503A (en) * 1948-02-24 1953-02-03 Antone D Elmer Water softener
US2699216A (en) * 1951-01-31 1955-01-11 Ansul Chemical Co Method for producing streams of fireextinguishing dry chemical
US2768750A (en) * 1954-01-14 1956-10-30 Lindsay Company Distributor for water treatment and filter tanks
FR1363045A (en) * 1962-07-16 1964-06-05 Hoover Ltd Improvements to pipe fittings
BE657361A (en) * 1963-12-20 1965-06-18
US3317044A (en) * 1964-12-02 1967-05-02 Culligan Inc Water conditioning apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627503A (en) * 1948-02-24 1953-02-03 Antone D Elmer Water softener
US2699216A (en) * 1951-01-31 1955-01-11 Ansul Chemical Co Method for producing streams of fireextinguishing dry chemical
US2768750A (en) * 1954-01-14 1956-10-30 Lindsay Company Distributor for water treatment and filter tanks
FR1363045A (en) * 1962-07-16 1964-06-05 Hoover Ltd Improvements to pipe fittings
BE657361A (en) * 1963-12-20 1965-06-18
US3317044A (en) * 1964-12-02 1967-05-02 Culligan Inc Water conditioning apparatus

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826375A (en) * 1971-07-19 1974-07-30 Universal Oil Prod Co Liquid-solids contacting chamber with spherical strainer means
US3779387A (en) * 1971-10-20 1973-12-18 Ocean Protein Corp Filter
US4094790A (en) * 1976-11-11 1978-06-13 Industrial Filter & Pump Mfg. Co. Distributor collector assembly
JPS5369452A (en) * 1976-12-02 1978-06-20 Ebara Corp Apparatus for collecting water of liquid treating equipment
JPS585696B2 (en) * 1976-12-02 1983-02-01 株式会社荏原製作所 Water collection device for liquid processing equipment
US4169793A (en) * 1977-07-11 1979-10-02 Tolo, Incorporated Tank drain assembly for swimming pool filters
US4304667A (en) * 1979-02-23 1981-12-08 Framatome Filter for purifying a fluid containing ferromagnetic particles
US4416773A (en) * 1982-02-22 1983-11-22 Water Refining Company, Inc. Valve mechanism for multiple distributor fluid treatment system
US4509218A (en) * 1983-03-18 1985-04-09 Morgan Flotation Systems Drain pipes for emptying waveless waterbed mattresses
US4867874A (en) * 1986-12-31 1989-09-19 Robert Aubert Device for filtering water from an overflowing swimming pool, using an accumulating tank acting as a gravity filter
GB2233575B (en) * 1989-07-11 1993-02-17 Graver Co Underdrain filter
GB2233575A (en) * 1989-07-11 1991-01-16 Graver Co Underdrain strainer assembly
US5068033A (en) * 1990-05-10 1991-11-26 Hayward Industries, Inc. Underdrain assembly with pivotally-mounted and lockable laterals
GB2251194A (en) * 1990-12-28 1992-07-01 Fernando Martinez Mugica Filter for machine tool
GB2251194B (en) * 1990-12-28 1994-05-04 Fernando Martinez Mugica Filter for machine tool
US5203995A (en) * 1991-01-23 1993-04-20 Fernando Martinez M Filter for machine tool
GB2257378A (en) * 1991-07-10 1993-01-13 Mark Peter Nigel Fisher Water filter
GB2257378B (en) * 1991-07-10 1995-06-28 Mark Peter Nigel Fisher An improved drainage assembly
US5891335A (en) * 1996-01-04 1999-04-06 Agency Environmental, Inc. Filtration system with traveling plenum
US5584998A (en) * 1996-01-25 1996-12-17 H-Tech, Inc. Self-adjusting filter diffuser and method for assembling same in a filter housing
US5762785A (en) * 1997-05-29 1998-06-09 Aplister, S.A. Swimming pool filter
US6048132A (en) * 1998-07-27 2000-04-11 Agency Environmental, Inc. Filter underdrain with prefabricated cells
GB2348829A (en) * 1999-03-12 2000-10-18 Mark Peter Nigel Fisher Hub for water recirculating system
GB2348829B (en) * 1999-03-12 2003-08-20 Mark Peter Nigel Fisher Water recirculating apparatus
US6605211B1 (en) 2000-10-06 2003-08-12 Jacuzzi Leisure Products One-piece underdrain for swimming pool filters
US7341662B2 (en) * 2001-10-18 2008-03-11 Derek Colin Tolley Distribution and collection headers for a filter bed
US20080099413A1 (en) * 2001-10-18 2008-05-01 Tolley Derek C Method of Filtering Liquid Media
US20080257807A1 (en) * 2003-04-10 2008-10-23 David John Parkinson Filtration Apparatus
US8012359B2 (en) * 2003-04-10 2011-09-06 Kcc Group Limited Filtration apparatus
US20060124527A1 (en) * 2004-09-20 2006-06-15 Pentair Water Pool And Spa, Inc. Filter devices including a porous body
US7513993B2 (en) 2004-09-20 2009-04-07 Pentair Water Pool And Spa, Inc. Filter devices including a porous body
US20100206795A1 (en) * 2006-06-23 2010-08-19 Chernoff Larry J Distributor for domestic water filters
WO2008017817A1 (en) * 2006-08-08 2008-02-14 The Boc Group Limited Improvements in or relating to reaction vessels
EP1918251A1 (en) 2006-10-31 2008-05-07 Pentair Water Belgium BVBA A water distributor for a multiport valve, a multiport valve including said distributor and a filter including said valve
US8137545B2 (en) 2007-03-23 2012-03-20 Zodiac Pool Systems, Inc. Pool filter
US7794591B2 (en) 2007-03-23 2010-09-14 Zodiac Pool Systems, Inc. Pool filter
US20080230454A1 (en) * 2007-03-23 2008-09-25 Nibler David B Pool filter
US7815796B2 (en) 2007-03-23 2010-10-19 Zodiac Pool Systems, Inc. Pool filter
US8173011B2 (en) 2007-10-05 2012-05-08 Zodiac Pool Systems, Inc. Methods and apparatus for a pool treatment and water system
US7951293B2 (en) 2007-10-05 2011-05-31 Zodiac Pool Systems, Inc. Methods and apparatus for a pool treatment and water system
WO2009059624A1 (en) 2007-11-09 2009-05-14 Pentair International Sarl Quick-release fitting assembly
US20100229982A1 (en) * 2009-03-11 2010-09-16 Tadlock John W Fluid distributor and collection device with collapsible laterals and knuckles
US8500171B2 (en) 2009-03-11 2013-08-06 John Tadlock & Associates, Inc. Fluid distributor and collection device with collapsible laterals and knuckles
US8516661B2 (en) 2009-04-29 2013-08-27 Zodiac Pool Systems, Inc. Retainer band for use in fluid-handling vessels
US20120138518A1 (en) * 2009-08-14 2012-06-07 Filippo Bussinelli Filtering system for swimming pools
US20110108144A1 (en) * 2009-11-09 2011-05-12 Anova Resources LLC Multi-port quick connect fluid treatment tank head
US9108126B2 (en) 2011-08-05 2015-08-18 Hayward Industries, Inc. Unitary filter tank and an underdrain for filtering a body of water
US20130032517A1 (en) * 2011-08-05 2013-02-07 Renaud Benoit Joseph Unitary filter tank and an underdrain for filtering a body of water
US8936721B2 (en) * 2011-08-05 2015-01-20 Hayward Industries, Inc. Unitary filter tank and an underdrain for filtering a body of water
US20130081984A1 (en) * 2011-10-04 2013-04-04 Paul M. Cordua Water filter system
US9358480B2 (en) * 2011-10-04 2016-06-07 Paul M. Cordua Water filter system
US20220088527A1 (en) * 2020-09-18 2022-03-24 Pall Corporation Branched filter and method of use
US20220258091A1 (en) * 2020-09-25 2022-08-18 Mark Henderson Pool filter assembly
US11883771B2 (en) * 2020-09-25 2024-01-30 Mark Henderson Pool filter assembly
US20240238715A1 (en) * 2020-09-25 2024-07-18 Mark Henderson Pool filter assembly

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