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US3886616A - Hand propelled swimming pool cleaner - Google Patents

Hand propelled swimming pool cleaner Download PDF

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Publication number
US3886616A
US3886616A US312569A US31256972A US3886616A US 3886616 A US3886616 A US 3886616A US 312569 A US312569 A US 312569A US 31256972 A US31256972 A US 31256972A US 3886616 A US3886616 A US 3886616A
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housing
wall portion
filter means
water
filter
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US312569A
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Fay A Hayes
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/14—Parts, details or accessories not otherwise provided for
    • E04H4/16—Parts, details or accessories not otherwise provided for specially adapted for cleaning
    • E04H4/1618—Hand-held powered cleaners

Definitions

  • the pump is adapted to pick up dirt particles or the like from the [56] References Cited pool floor and pump the same through a filter to remove the particles from the water,
  • An elongated han- UNITED STATES PATENTS dle is secured to the cleaner to permit a person at y i fifi poolside to manually maneuver the cleaner to clean a son 3,257,681 6/1966 Miller 15/346 X the bottom of the pool 3,310,173 3/1967 Sosower 15/1.7 X 4 Claims, 4 Drawing Figures 1 HAND PROPELLED SWIMMING POOL CLEANER It is a principleobject of this invention to provide an improved swimming pool cleaner.
  • a further object of the invention is to provide a hand propelled or operated swimming. pool cleaner.
  • a further object of this invention ,.is.,to provide a swimming pool cleaner having an, elongated handle secured thereto to permit a person atpoolside to clean the bottom of the pool.
  • a further object of the invention is to provide a hand propelled swimming "pool cleaner which is ideally suited for use with the swimmingpools of the above ground type.
  • a further object of the invention is to provide a hand operated swimming pool cleaner including means for efficiently removing the dirt particles or the like from the pool floor.
  • a further object of the invention is to provide a hand propelled swimming pool cleaner which is safe to operate.
  • a further object of the invention is to provide a hand propelled swimming pool cleaner which is inexpensive to manufacture.
  • a further object of the invention is to provide a hand propelled swimming pool cleaner which is refined in appearance and durable in use.
  • FIG. 1 is a top perspective view of the swimming pool cleaner of this invention:
  • FIG. 2 is a top elevational view of the swimming pool cleaner as seen along lines 22 of FIG. 1:
  • FIG. 3 is a sectional view seen along lines 3-3 of FIG. 2;
  • FIG. 4 is a side view of the'swimming pool cleaner.
  • the numeral generally refers to the swimming pool cleaner of this invention generally comprising a frame means 12 having a bottom 14 provided with a plurality of caster wheels 16. An opening 18 is provided in bottom 14 as illustrated in FIG. 3.
  • the numeral 20 refers to a brush means secured to bottom 14 and extending around the opening 18 as illustrated in the drawings. Brush 20 is generally in the form of a rectangle but the ends thereof are rounded as illustrated in FIG. 2.
  • the numeral 22 refers to an impeller means positioned above the opening 18 and below the plate 24.
  • Motor 26 is secured to the plate 24 by bolts 28 and is connected to the impeller 22 by shaft 30 so as to operate the same.
  • a properly sealed and grounded electrical cord 32 extends from the motor 26 to permit power to be supplied to the motor.
  • An elongated handle 34 is secured to the upper end of motor 26 by means of bolt 36.
  • a washer-like member 38 is secured to the lower end of the handle 34 and the bolt 36 extends therethrough to provide a pivotal connection about a vertical axis therebetween.
  • An accordion pleated cardboard type filter 40 is positioned on the plate 24 as illustrated in FIG. 3 and is generally cylindrical or ring-shaped. Housing 42 exends upwardly from bottom 14 as illustrated in FIG. 3
  • outer wall 44 is spaced from the filter 40 to define a compartment therebetween.
  • the numeral52 refers to the compartmerit area between the plate 24 and bottom 14.
  • Inner wall 48 of housing 42 is provided with a plurality of openings 54 formed therein to permit the water to discharge therethrough as will be described in more detail hereinafter. It should be noted that the housing 42 and bottom l4 may be madeas an intregal part or separately if desired. Likewise, the upper portion of the housing 42 may also be provided as a separate component so as to permit the easy insertion of the filter 40 into the cleaner.
  • the cleaner 10 is lowered into the pool by the handle 34 until the wheels 16 engage the pool floor or bottom 56.
  • the motor 26 is energized which causes the impeller 22-to be rotated so that the water will be sucked or pumped upwardly into the opening 18 as illustrated by arrows in FIG. 3.
  • the water is pumped through the compartment area 52 and the compartment 50 into the filter 40 as also illustrated by the arrows in FIG. 3.
  • the dirt particles which are suspended in the water are trapped in the filter 40 and the water is discharged outwardly through the openings 54.
  • the brush 20 helps to dislodge the dirt particles from the pool floor to obtain a more efficient cleaning operation.
  • the handle 34 permits the cleaner 10 to be easily maneuvered along the pool floor so that the entire floor may be quickly and easily cleaned.
  • the cleaner of this invention is especially well adapted for use with the above ground type pools having a vinyl liner type construction. After the pool has been cleaned, the cleaner 10 can be attached to the outside wall of the pool and continued to operate so as to act as a filter for the pool.
  • a swimming pool cleaner of this invention not only efficiently cleans the bottom of the pool but also permits the cleaner to be built in an economical manner.
  • the invention accomplishes at least all of the stated objectives.
  • a submergible swimming pool cleaner comprising,
  • a filter means on said frame means in fluid communication with said water intake means for trapping water-borne particles in the water passing therethrough
  • an elongated handle means operatively connected to said frame means extending upwardly therefrom to permit a person at poolside to manually move the cleaner along the bottom of the pool
  • said frame means comprising a bottom portion spaced above the floor of the pool, a cylindrical housing extending upwardly from said bottom portion and having upstanding spaced apart outer and inner wall portions, said housing having a top portion extending over the upper ends of its said inner and outer wall portions, said filter means being cylindrical in shape and positioned in said housing between said inner and outer wall portions thereof, said filter means having an outer wall portion, said filter means having a diameter less than said housing so that the outer wall portion of said filter means is spaced inwardly of said outer wall portion of said housing to define an enclosed compartment area therebetween.
  • said filter means having an inner wall portion positioned adjacent the inner wall portion of said housing, said inner wall portion of said housing having a plurality of discharge openings formed therein in communication with said filter means in said compartment area said water intake means being an intake port formed in said bottom portion, said water intake means being in fluid communication with said compartment area so that the water will be drawn inwardly through said intake port by said pump means into said motor driven pump means comprises a waterproof motor positioned between said inner wall portion of said housing and spaced therefrom.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A hand propelled or operated swimming pool cleaner is disclosed comprising a wheeled frame having a motor driven pump mounted thereon. The pump is adapted to pick up dirt particles or the like from the pool floor and pump the same through a filter to remove the particles from the water. An elongated handle is secured to the cleaner to permit a person at poolside to manually maneuver the cleaner to clean the bottom of the pool.

Description

United States Patent 11 1 1111 3,886,616 Hayes 1 1 June 3, 1975 [54] HAND PROPELLED SWIMMING POOL 3,551,930 1/1971 Myers l5/1.7 CLEANER 3,755,843 9/1973 Goertzen et al. 15/l.7
[76] Inventor: Fay A. Hayes, 144 NW. 7th 511, FOREIGN PATENTS 0R APPLICATIONS Boca Raton, Fla. 33432 758,796 11/1935 France l5/1.7
[22] Flled: 1972 Primary ExaminerEdward L. Roberts [21] Ap 1. No.: 312,569 Attorney, Agent, or FirmZarley,,McKee, Thomte &
Voorhees [52] US. Cl. 15/l.7; 15/347; 15/398 51 1111.131 E04h 3/20 [57] ABSTRACT [58] Field of Search 15/1.7, 327 R, 345447, A hand Propelled or Operated swlmmmg P cleaner 15/354 355 359 398 399 is disclosed comprising a wheeled frame having a 3 motor driven pump mounted thereon. The pump is adapted to pick up dirt particles or the like from the [56] References Cited pool floor and pump the same through a filter to remove the particles from the water, An elongated han- UNITED STATES PATENTS dle is secured to the cleaner to permit a person at y i fifi poolside to manually maneuver the cleaner to clean a son 3,257,681 6/1966 Miller 15/346 X the bottom of the pool 3,310,173 3/1967 Sosower 15/1.7 X 4 Claims, 4 Drawing Figures 1 HAND PROPELLED SWIMMING POOL CLEANER It is a principleobject of this invention to provide an improved swimming pool cleaner.
A further object of the inventionis to provide a hand propelled or operated swimming. pool cleaner.
A further object of this invention ,.is.,to provide a swimming pool cleaner having an, elongated handle secured thereto to permit a person atpoolside to clean the bottom of the pool. v I
A further object of the invention is to provide a hand propelled swimming "pool cleaner which is ideally suited for use with the swimmingpools of the above ground type.
A further object of the invention is to provide a hand operated swimming pool cleaner including means for efficiently removing the dirt particles or the like from the pool floor.
A further object of the invention is to provide a hand propelled swimming pool cleaner which is safe to operate.
A further object of the invention is to provide a hand propelled swimming pool cleaner which is inexpensive to manufacture.
A further object of the invention is to provide a hand propelled swimming pool cleaner which is refined in appearance and durable in use.
These and other objects will be apparent to those skilled in the art.
This invention consists in the construction, arrangements, and combination of the various parts of the device, whereby the objects contemplated are attained as hereinafter more fully set forth, specifically pointed out in the claims, and illustrated in the accompanying drawings in which:
FIG. 1 is a top perspective view of the swimming pool cleaner of this invention:
FIG. 2 is a top elevational view of the swimming pool cleaner as seen along lines 22 of FIG. 1:
FIG. 3 is a sectional view seen along lines 3-3 of FIG. 2; and
FIG. 4 is a side view of the'swimming pool cleaner.
The numeral generally refers to the swimming pool cleaner of this invention generally comprising a frame means 12 having a bottom 14 provided with a plurality of caster wheels 16. An opening 18 is provided in bottom 14 as illustrated in FIG. 3. The numeral 20 refers to a brush means secured to bottom 14 and extending around the opening 18 as illustrated in the drawings. Brush 20 is generally in the form of a rectangle but the ends thereof are rounded as illustrated in FIG. 2.
The numeral 22 refers to an impeller means positioned above the opening 18 and below the plate 24. Motor 26 is secured to the plate 24 by bolts 28 and is connected to the impeller 22 by shaft 30 so as to operate the same. A properly sealed and grounded electrical cord 32 extends from the motor 26 to permit power to be supplied to the motor. An elongated handle 34 is secured to the upper end of motor 26 by means of bolt 36. As seen in the drawings, a washer-like member 38 is secured to the lower end of the handle 34 and the bolt 36 extends therethrough to provide a pivotal connection about a vertical axis therebetween.
An accordion pleated cardboard type filter 40 is positioned on the plate 24 as illustrated in FIG. 3 and is generally cylindrical or ring-shaped. Housing 42 exends upwardly from bottom 14 as illustrated in FIG. 3
and generally includes outer wall member 44, top 46 "and inner wall 48. As seenin FIG. 3, outer wall 44 is spaced from the filter 40 to define a compartment therebetween. The numeral52 refers to the compartmerit area between the plate 24 and bottom 14. Inner wall 48 of housing 42 is provided with a plurality of openings 54 formed therein to permit the water to discharge therethrough as will be described in more detail hereinafter. It should be noted that the housing 42 and bottom l4 may be madeas an intregal part or separately if desired. Likewise, the upper portion of the housing 42 may also be provided as a separate component so as to permit the easy insertion of the filter 40 into the cleaner.
In operation, the cleaner 10 is lowered into the pool by the handle 34 until the wheels 16 engage the pool floor or bottom 56. The motor 26 is energized which causes the impeller 22-to be rotated so that the water will be sucked or pumped upwardly into the opening 18 as illustrated by arrows in FIG. 3. The water is pumped through the compartment area 52 and the compartment 50 into the filter 40 as also illustrated by the arrows in FIG. 3. The dirt particles which are suspended in the water are trapped in the filter 40 and the water is discharged outwardly through the openings 54. The brush 20 helps to dislodge the dirt particles from the pool floor to obtain a more efficient cleaning operation.
The handle 34 permits the cleaner 10 to be easily maneuvered along the pool floor so that the entire floor may be quickly and easily cleaned. The cleaner of this invention is especially well adapted for use with the above ground type pools having a vinyl liner type construction. After the pool has been cleaned, the cleaner 10 can be attached to the outside wall of the pool and continued to operate so as to act as a filter for the pool.
Thus it can be seen that an improved swimming pool cleaner has been provided which can be hand operated. A swimming pool cleaner of this invention not only efficiently cleans the bottom of the pool but also permits the cleaner to be built in an economical manner. Thus it can be seen that the invention accomplishes at least all of the stated objectives.
I claim:
1. A submergible swimming pool cleaner comprising,
a wheeled frame means,
a motor driven pump means on said frame means having a water intake means,
a filter means on said frame means in fluid communication with said water intake means for trapping water-borne particles in the water passing therethrough,
an elongated handle means operatively connected to said frame means extending upwardly therefrom to permit a person at poolside to manually move the cleaner along the bottom of the pool,
said frame means comprising a bottom portion spaced above the floor of the pool, a cylindrical housing extending upwardly from said bottom portion and having upstanding spaced apart outer and inner wall portions, said housing having a top portion extending over the upper ends of its said inner and outer wall portions, said filter means being cylindrical in shape and positioned in said housing between said inner and outer wall portions thereof, said filter means having an outer wall portion, said filter means having a diameter less than said housing so that the outer wall portion of said filter means is spaced inwardly of said outer wall portion of said housing to define an enclosed compartment area therebetween. said filter means having an inner wall portion positioned adjacent the inner wall portion of said housing, said inner wall portion of said housing having a plurality of discharge openings formed therein in communication with said filter means in said compartment area said water intake means being an intake port formed in said bottom portion, said water intake means being in fluid communication with said compartment area so that the water will be drawn inwardly through said intake port by said pump means into said motor driven pump means comprises a waterproof motor positioned between said inner wall portion of said housing and spaced therefrom.
3. The swimming pool cleaner of claim 2 wherein said handle means is secured to said motor.
4. The swimming pool cleaner of claim 3 wherein said handle means is pivotally secured to said motor about a vertical axis.

Claims (4)

1. A submergible swimming pool cleaner comprising, a wheeled frame means, a motor driven pump means on said frame means having a water intake means, a filter means on said frame means in fluid communication with said water intake means for trapping water-borne particles in the water passing therethrough, an elongated handle means operatively connected to said frame means extending upwardly therefrom to permit a person at poolside to manually move the cleaner along the bottom of the pool, said frame means comprising a bottom portion spaced above the floor of the pool, a cylindrical housing extending upwardly from said bottom portion and having upstanding spaced apart outer and inner wall portions, said housing having a top portion extending over the upper ends of its said inner and outer wall portions, said filter means being cylindrical in shape and positioned in said housing between said inner and outer wall portions thereof, said filter means having an outer wall portion, said filter means having a diameter less than said housing so that the outer wall portion of said filter means is spaced inwardly of said outer wall portion of said housing to define an enclosed compartment area therebetween, said filter means having an inner wall portion positioned adjacent the inner wall portion of said housing, said inner wall portion of said housing having a plurality of discharge openings formed therein in communication with said filter means in said compartment area, said water Intake means being an intake port formed in said bottom portion, said water intake means being in fluid communication with said compartment area so that the water will be drawn inwardly through said intake port by said pump means into said compartment area thence through said filter means and outwardly through said discharge openings.
1. A submergible swimming pool cleaner comprising, a wheeled frame means, a motor driven pump means on said frame means having a water intake means, a filter means on said frame means in fluid communication with said water intake means for trapping water-borne particles in the water passing therethrough, an elongated handle means operatively connected to said frame means extending upwardly therefrom to permit a person at poolside to manually move the cleaner along the bottom of the pool, said frame means comprising a bottom portion spaced above the floor of the pool, a cylindrical housing extending upwardly from said bottom portion and having upstanding spaced apart outer and inner wall portions, said housing having a top portion extending over the upper ends of its said inner and outer wall portions, said filter means being cylindrical in shape and positioned in said housing between said inner and outer wall portions thereof, said filter means having an outer wall portion, said filter means having a diameter less than said housing so that the outer wall portion of said filter means is spaced inwardly of said outer wall portion of said housing to define an enclosed compartment area therebetween, said filter means having an inner wall portion positioned adjacent the inner wall portion of said housing, said inner wall portion of said housing having a plurality of discharge openings formed therein in communication with said filter means in said compartment area, said water Intake means being an intake port formed in said bottom portion, said water intake means being in fluid communication with said compartment area so that the water will be drawn inwardly through said intake port by said pump means into said compartment area thence through said filter means and outwardly through said discharge openings.
2. The swimming pool cleaner of claim 1 wherein said motor driven pump means comprises a waterproof motor positioned between said inner wall portion of said housing and spaced therefrom.
3. The swimming pool cleaner of claim 2 wherein said handle means is secured to said motor.
US312569A 1972-12-06 1972-12-06 Hand propelled swimming pool cleaner Expired - Lifetime US3886616A (en)

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Cited By (52)

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Publication number Priority date Publication date Assignee Title
US4168557A (en) * 1976-12-15 1979-09-25 Rasch Wilhelm Pool cleaners
US4240174A (en) * 1979-07-30 1980-12-23 Scott Jeffrey L Self-contained mobile pool cleaning apparatus
FR2581689A1 (en) * 1985-05-07 1986-11-14 Coladant Jacques Surface suction device for treating swimming pool water
US4959146A (en) * 1988-01-21 1990-09-25 Kristan Louis L Remotely operated submersible underwater suction apparatus
US5542142A (en) * 1995-05-26 1996-08-06 Young; Wayne C. Pond cleaning device
US5706539A (en) * 1995-08-07 1998-01-13 Fukuda; Kakutaro Water tank cleaning machine
US5725761A (en) * 1997-02-24 1998-03-10 Phillips; Harold L. Modular filter / circulation system and traveling main drain for in-ground swimming pools
US6352645B1 (en) 2000-07-17 2002-03-05 Arizona Public Service Company Liquid-tank debris extraction system and method of operation thereof
US6473927B1 (en) * 1998-09-23 2002-11-05 3S Systemtechnik Ag Swimming bath cleaning device
US20030159723A1 (en) * 2002-01-18 2003-08-28 Hui Joseph Wing-Tak Swimming pool cleaner
US20030171079A1 (en) * 2002-03-07 2003-09-11 Hoton How Method and apparatus of obtaining suction control over surface cleaning and scraping
US20040045887A1 (en) * 2000-10-05 2004-03-11 Ivona Posavac Device for purifying liquids
US20040079690A1 (en) * 2002-10-29 2004-04-29 Guy Erlich Portable electric pool cleaner
US20050126969A1 (en) * 2003-12-16 2005-06-16 Dolton Edward G.Iii Pool cleaning device
US6942790B1 (en) 2004-06-10 2005-09-13 Edward Dolton Open-air filtration cleaning device for pools and hot tubs
US20050247613A1 (en) * 2004-05-04 2005-11-10 Wayne Bishop Underwater vacuum cleaner
US20050279683A1 (en) * 2002-10-29 2005-12-22 Water Tech Llc Hand-held pool cleaner
US20060036082A1 (en) * 2002-10-23 2006-02-16 Centro De Inmunologia Molecular Method of obtaining cell lines in a protein-free medium and cell lines thus obtained
US20060032801A1 (en) * 2004-08-16 2006-02-16 Reid Worrell A Pool cleaning apparatus
US20070007192A1 (en) * 2004-08-16 2007-01-11 Reid Worrell A Pool cleaning apparatus
US20090277821A1 (en) * 2008-05-06 2009-11-12 Hui Wing-Kin Pool cleaning vehicle having an advanced drain system
US20100065482A1 (en) * 2008-09-16 2010-03-18 Jirawat Sumonthee Apparatus For Facilitating Maintenance Of A Pool Cleaning Device
US20110120073A1 (en) * 2009-05-18 2011-05-26 Ron Flanary Water-Resistant Electric Motor
US20120074050A1 (en) * 2010-09-24 2012-03-29 Poolvergnuegen Swimming Pool Cleaner with a Rigid Debris Canister
US20120222263A1 (en) * 2011-03-03 2012-09-06 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
US8646149B2 (en) 2011-03-03 2014-02-11 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8739359B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8739357B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp Filter construction for a surface cleaning apparatus
US8763202B2 (en) 2011-03-03 2014-07-01 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8769767B2 (en) 2011-03-03 2014-07-08 G.B.D. Corp. Removable cyclone chamber and dirt collection assembly for a surface cleaning apparatus
ES2413186R1 (en) * 2011-12-16 2014-07-11 Aqua Products, Inc. A self-propelled robotic cleaning device for surface cleaning submerged in a pool or reservoir
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US8869337B2 (en) 2010-11-02 2014-10-28 Hayward Industries, Inc. Pool cleaning device with adjustable buoyant element
US8973212B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8973214B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
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US9593502B2 (en) 2009-10-19 2017-03-14 Hayward Industries, Inc. Swimming pool cleaner
USD787761S1 (en) 2014-11-07 2017-05-23 Hayward Industries, Inc. Pool cleaner
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US10124867B2 (en) 2015-09-11 2018-11-13 Adi Ringer Flexible rotary brush hub
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US10349637B2 (en) 2016-07-28 2019-07-16 Water Technology Llc Hand-held submersible aquarium power cleaner
US10413125B2 (en) 2014-09-19 2019-09-17 Clarification Technology, Inc. Cooking oil filtration systems and methods
US11091925B2 (en) 2013-11-08 2021-08-17 Water Technology Llc Submersible electric-powered leaf vacuum cleaner
US11534710B2 (en) * 2019-05-07 2022-12-27 Kokido Development Limited Double filtration broom vacuum cleaner for swimming pool cleaning
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Cited By (74)

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Publication number Priority date Publication date Assignee Title
US4168557A (en) * 1976-12-15 1979-09-25 Rasch Wilhelm Pool cleaners
US4240174A (en) * 1979-07-30 1980-12-23 Scott Jeffrey L Self-contained mobile pool cleaning apparatus
FR2581689A1 (en) * 1985-05-07 1986-11-14 Coladant Jacques Surface suction device for treating swimming pool water
US4959146A (en) * 1988-01-21 1990-09-25 Kristan Louis L Remotely operated submersible underwater suction apparatus
US5542142A (en) * 1995-05-26 1996-08-06 Young; Wayne C. Pond cleaning device
US5706539A (en) * 1995-08-07 1998-01-13 Fukuda; Kakutaro Water tank cleaning machine
US5725761A (en) * 1997-02-24 1998-03-10 Phillips; Harold L. Modular filter / circulation system and traveling main drain for in-ground swimming pools
US6473927B1 (en) * 1998-09-23 2002-11-05 3S Systemtechnik Ag Swimming bath cleaning device
US6352645B1 (en) 2000-07-17 2002-03-05 Arizona Public Service Company Liquid-tank debris extraction system and method of operation thereof
US7052605B2 (en) * 2000-10-05 2006-05-30 Ivona Posavac Device for purifying liquids
US20040045887A1 (en) * 2000-10-05 2004-03-11 Ivona Posavac Device for purifying liquids
US20030159723A1 (en) * 2002-01-18 2003-08-28 Hui Joseph Wing-Tak Swimming pool cleaner
US7213287B2 (en) * 2002-01-18 2007-05-08 Smartpool, Inc. Swimming pool cleaner
US20070192970A1 (en) * 2002-01-18 2007-08-23 Hui Joseph W Swimming pool cleaner
US20070192971A1 (en) * 2002-01-18 2007-08-23 Hui Joseph W Swimming pool cleaner
US20030171079A1 (en) * 2002-03-07 2003-09-11 Hoton How Method and apparatus of obtaining suction control over surface cleaning and scraping
US20060036082A1 (en) * 2002-10-23 2006-02-16 Centro De Inmunologia Molecular Method of obtaining cell lines in a protein-free medium and cell lines thus obtained
US6939460B2 (en) * 2002-10-29 2005-09-06 Water Tech Llc. Portable electric pool cleaner
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