WO1998051888A1 - Hose rotator for automatic pool cleaner - Google Patents

Hose rotator for automatic pool cleaner Download PDF

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Publication number
WO1998051888A1
WO1998051888A1 PCT/US1998/009810 US9809810W WO9851888A1 WO 1998051888 A1 WO1998051888 A1 WO 1998051888A1 US 9809810 W US9809810 W US 9809810W WO 9851888 A1 WO9851888 A1 WO 9851888A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
cleaner
cleaner head
flexible hose
intake
Prior art date
Application number
PCT/US1998/009810
Other languages
French (fr)
Inventor
David Seagrave Atkins
Original Assignee
Baracuda International Corporation
Zodiac Pool Care Europe, Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baracuda International Corporation, Zodiac Pool Care Europe, Sa filed Critical Baracuda International Corporation
Priority to AU74857/98A priority Critical patent/AU7485798A/en
Publication of WO1998051888A1 publication Critical patent/WO1998051888A1/en

Links

Classifications

    • 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
    • E04H4/1636—Suction cleaners
    • E04H4/1645—Connections to the pool water circulation system
    • 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
    • E04H4/1654—Self-propelled cleaners
    • E04H4/1663—Self-propelled cleaners the propulsion resulting from an intermittent interruption of the waterflow through the cleaner
    • 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
    • E04H4/1636—Suction cleaners

Definitions

  • This invention lies in the field of suction side automatic pool cleaners (APC's) of the kind that comprises a cleaner head which is connected to a flexible hose which is connected in turn to the intake of a recirculating pump and filter system.
  • the cleaner head has components devised to provide intermittent interruption of the water flow which results in the head moving randomly over the under water surface of the pool or other below liquid surface.
  • the flexible hose has an influence on the movement of the cleaner head. It is found that the influence of the flexible hose is to make the movement of the cleaner foot less than entirely random and has a tendency to result in some areas of the pool under water surface being less frequently cleaned or not cleaned at all depending on the characteristics of a particular pool and flexible hose arrangements. The satisfactory cleaning of the whole under water surface of a pool requires the closest possible approach to an entirely random movement of the cleaner head.
  • the hose is rotated on its own axis during its operation and/or the cleaner head is rotated relative to the hose. Coupled with this rotation the connection of the cleaner head to the hose may optionally include a relatively rigid pipe bend, that is rigid as compared with the flexibility of the hose.
  • the connection between the end of the hose and the cleaner head may be adapted to freely allow rotation of the cleaner head relative to the hose on the axis of the hose or to restrict or entirely eliminate such relative rotation.
  • the direction of rotation of the hose may be retained continuously in one direction or the direction may be reversed periodically.
  • the position from which the hose is rotated is at a fixed position from which the hose extends from the intake of the recirculating pump and filter system, for example, from a weir connection at the side of the pool. However, it could be at an intermediate position somewhat down the length of the hose.
  • the rotation of the hose is driven by a small water wheel which is actuated by a flow of water resulting from a pressure differential between the inside of the pipe or hose and the surrounding water.
  • the water wheel can be an axial flow type of fan blade arrangement, a centrifugal flow rotor arrangement or turbine blade type arrangement.
  • Belt- on wheel type arrangement, paddle wheel arrangement, etc. can be used, usually appropriately with a drive transmission comprising suitable gearing to transfer a comparatively high speed of such a primary wheel to a relatively low speed of turning caused on the hose will be appropriate. Mechanisms will then be optionally added to that to provide for periodic reversing of the direction of rotation.
  • a preferred specific feature of the invention is that the flow of water which has passed through what can be generically described as the actuating wheel selected from a suitable one of those described above is fed through a joint which allows free rotation between a part of the hose which is irrotationally fixed and that part of the hose which is to be rotated.
  • This feature of the invention provides for a continuous cleaning action or flushing action of that joint.
  • the location of the actuating wheel on the hose is selected so as to place it at a level in which it will tend to pick up clean water. It is found that in a pool of water this is generally a position which is a little under the surface of the water.
  • Figure 1 is a sketch of a general arrangement incorporating the invention
  • Figure 2 is a cross sectional view on the hose axis of the device which rotates the hose
  • Figure 3 is a side view of the gear cluster
  • Figure 4 is an end view of the water paddle and gear cluster.
  • a conventional swimming pool of which part of the wall 1 and floor 2 is shown has water 3 in it up to the water level 4.
  • a conventional weir 5 and leaf trap 6 leads to the pump intake 7 of a pump 8 which pumps the water through a filter 9 and then it is returned via pipe 10 to the pool.
  • a suction plate 11 is placed in the weir 6 (which may have a leaf basket, etc.) for connection of a pipe 12 which leads to the device according to the invention 13 for rotation of the hose 14 of an APC.
  • the APC comprises the cleaner head 15 with a connection at 16 of the hose 14 to it.
  • the possibility of an angle connection to it via an angle piece 17 is indicated as an alternative.
  • the connection of the hose 14 to the cleaner foot 15 at 16 may permit rotation of the hose 14 relative to the cleaner foot quite freely or perhaps somewhat less freely.
  • a hose which is favoured for other aspects has a tendency to be supplied by the factory with a wall thickness of which the tolerances are not entirely accurately controlled.
  • the result of a wall thickness somewhat thinner on one side of the hose and the other side is that with the hose subjected to internal low pressure it tends to acquire a set or a curvature which creates forces on the cleaner head influencing adversely the free randomising of the movement of the cleaner head over the pool floor and wall - the underwater surfaces.
  • the result can be unsatisfactory cleaning. With the rotation of the hose this adverse influence to the random movement of the cleaner head is reduced.
  • the rotation imparted to the hose can be continuously in one direction only or can alternate with a desired periodicity.
  • the device 13 for rotating the hose has an actuating mechanism in a housing 19 which is oriented downwardly so as to give better assurance of being below the surface 4 of the water.
  • the paddle wheel rotation which is imparted to it is geared downwardly in the housing 19 and imparted to a ring gear in a collar 20 which encircles an irrotationally held pipe 21.
  • the ring gear in the collar 20 is fixed to the rotatable pipe 22 which is rotated slowly while the paddle wheel is driven by a water jet and this rotation is transferred to the flexible hose 14 by the connection of it to the pipe 22.
  • FIGS 2 to 4 show the device 13.
  • the irrotational hose 21 (it is held irrotational by connection to the weir plate 11) has the collar 20 fixed to it and the rotational hose 22 is to be connected to the flexible hose 14.
  • the housing 19 is part of the moulding of the collar 20 and contains the paddle wheel 18.
  • the rotatable pipe 22 runs on balls 23 which form a low friction ball bearing.
  • the bore of the pipe 22 is restricted in this example as shown at 24 which creates a degree of venturi effect which by Bernoulli equation reduces the liquid pressure in this area. This low pressure is transmitted by the clearance 25 between the rotating pipe 22 and the bore of the fixed pipe 21 past the balls 23 to the interior of the housing 19.
  • the pipe 22 is fixed to a ring gear 26 which runs inside the housing afforded by the collar structure 20 around the pipe 21 and the ring gear enters the housing 19 where it meshes with a pinion 27.
  • the pinion 27 is mounted on a shaft 28 and a series of wheel-and-pinion gear sets 29, 30 mesh with each other to successively reduce the rotation provided by the paddle wheel 18 to that supplied to the pinion 27 by a very large amount.
  • the shaft 31 which carries the paddle wheel 18 is also mounted in the housing 19.
  • a port is provided in the housing which communicates with the water surrounding the housing in use and is designed to direct water onto the paddle 18.
  • the device is optimally located close to the pump input where the depression of pressure in the bore of the pipe is the most. Although the device could be located closer to the cleaner foot, the closer it approaches the cleaner foot the less the depression in the pipe and hence the less the motive power to create a jet of water onto the paddle 18.
  • the port in the housing 19 which directs water on to the paddle wheel 18 can be made a swingable port. It will be mounted, for example, on the shaft 28 and a series of lost motion washers will be provided so as to provide a suitable total number of rotations of the shaft 28 before the nozzle is switched from the position in which it directs a jet of water onto the paddle wheel 18 such as to rotate it in one direction (e.g. clockwise) to a position in which the nozzle directs water onto the paddle wheel to rotate it in the opposite direction (e.g. counter clockwise). This reversal of the direction of the paddle wheel 18 will thus continue for as long as the device is in operation as a result of depressed water pressure in the pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filtration Of Liquid (AREA)

Abstract

A suction side pool cleaner has a device (13) which rotates the flexible hose which connects between the cleaner head and the intake of the recirculating pump and filter system, to provide better randomness of movement of the cleaner head over the pool surface.

Description

HOSE ROTATOR FOR AUTOMATIC POOL CLEANER
This invention lies in the field of suction side automatic pool cleaners (APC's) of the kind that comprises a cleaner head which is connected to a flexible hose which is connected in turn to the intake of a recirculating pump and filter system. The cleaner head has components devised to provide intermittent interruption of the water flow which results in the head moving randomly over the under water surface of the pool or other below liquid surface.
The flexible hose has an influence on the movement of the cleaner head. It is found that the influence of the flexible hose is to make the movement of the cleaner foot less than entirely random and has a tendency to result in some areas of the pool under water surface being less frequently cleaned or not cleaned at all depending on the characteristics of a particular pool and flexible hose arrangements. The satisfactory cleaning of the whole under water surface of a pool requires the closest possible approach to an entirely random movement of the cleaner head.
According to this invention the hose is rotated on its own axis during its operation and/or the cleaner head is rotated relative to the hose. Coupled with this rotation the connection of the cleaner head to the hose may optionally include a relatively rigid pipe bend, that is rigid as compared with the flexibility of the hose. The connection between the end of the hose and the cleaner head may be adapted to freely allow rotation of the cleaner head relative to the hose on the axis of the hose or to restrict or entirely eliminate such relative rotation. The direction of rotation of the hose may be retained continuously in one direction or the direction may be reversed periodically.
The position from which the hose is rotated is at a fixed position from which the hose extends from the intake of the recirculating pump and filter system, for example, from a weir connection at the side of the pool. However, it could be at an intermediate position somewhat down the length of the hose.
Preferably, the rotation of the hose is driven by a small water wheel which is actuated by a flow of water resulting from a pressure differential between the inside of the pipe or hose and the surrounding water. Since the hose is connected to the intake of a recirculating pump its interior will be at lower pressure than the pressure of the surrounding water and this can be utilised to motivate or energise the turning of the hose. The water wheel can be an axial flow type of fan blade arrangement, a centrifugal flow rotor arrangement or turbine blade type arrangement. Belt- on wheel type arrangement, paddle wheel arrangement, etc., can be used, usually appropriately with a drive transmission comprising suitable gearing to transfer a comparatively high speed of such a primary wheel to a relatively low speed of turning caused on the hose will be appropriate. Mechanisms will then be optionally added to that to provide for periodic reversing of the direction of rotation.
A preferred specific feature of the invention is that the flow of water which has passed through what can be generically described as the actuating wheel selected from a suitable one of those described above is fed through a joint which allows free rotation between a part of the hose which is irrotationally fixed and that part of the hose which is to be rotated. This feature of the invention provides for a continuous cleaning action or flushing action of that joint. Preferably, the location of the actuating wheel on the hose is selected so as to place it at a level in which it will tend to pick up clean water. It is found that in a pool of water this is generally a position which is a little under the surface of the water. This is due to the tendency of foreign matter to sediment to the bottom of the pool and so a pick up from that area is avoided. At the same time floating detritus on the surface of the water is avoided with the actuating wheel a little below. The invention will be more fully described by way of an example with reference to the accompanying drawings in which:
Figure 1 is a sketch of a general arrangement incorporating the invention,
Figure 2 is a cross sectional view on the hose axis of the device which rotates the hose,
Figure 3 is a side view of the gear cluster, and
Figure 4 is an end view of the water paddle and gear cluster.
As shown in figure 1, a conventional swimming pool of which part of the wall 1 and floor 2 is shown has water 3 in it up to the water level 4. A conventional weir 5 and leaf trap 6 leads to the pump intake 7 of a pump 8 which pumps the water through a filter 9 and then it is returned via pipe 10 to the pool. A suction plate 11 is placed in the weir 6 (which may have a leaf basket, etc.) for connection of a pipe 12 which leads to the device according to the invention 13 for rotation of the hose 14 of an APC. The APC comprises the cleaner head 15 with a connection at 16 of the hose 14 to it. The possibility of an angle connection to it via an angle piece 17 is indicated as an alternative. The connection of the hose 14 to the cleaner foot 15 at 16 may permit rotation of the hose 14 relative to the cleaner foot quite freely or perhaps somewhat less freely.
It has been found that a hose which is favoured for other aspects has a tendency to be supplied by the factory with a wall thickness of which the tolerances are not entirely accurately controlled. The result of a wall thickness somewhat thinner on one side of the hose and the other side is that with the hose subjected to internal low pressure it tends to acquire a set or a curvature which creates forces on the cleaner head influencing adversely the free randomising of the movement of the cleaner head over the pool floor and wall - the underwater surfaces. The result can be unsatisfactory cleaning. With the rotation of the hose this adverse influence to the random movement of the cleaner head is reduced. The rotation imparted to the hose can be continuously in one direction only or can alternate with a desired periodicity.
The device 13 for rotating the hose has an actuating mechanism in a housing 19 which is oriented downwardly so as to give better assurance of being below the surface 4 of the water. The paddle wheel rotation which is imparted to it is geared downwardly in the housing 19 and imparted to a ring gear in a collar 20 which encircles an irrotationally held pipe 21. The ring gear in the collar 20 is fixed to the rotatable pipe 22 which is rotated slowly while the paddle wheel is driven by a water jet and this rotation is transferred to the flexible hose 14 by the connection of it to the pipe 22.
Figures 2 to 4 show the device 13. The irrotational hose 21 (it is held irrotational by connection to the weir plate 11) has the collar 20 fixed to it and the rotational hose 22 is to be connected to the flexible hose 14. The housing 19 is part of the moulding of the collar 20 and contains the paddle wheel 18. The rotatable pipe 22 runs on balls 23 which form a low friction ball bearing. The bore of the pipe 22 is restricted in this example as shown at 24 which creates a degree of venturi effect which by Bernoulli equation reduces the liquid pressure in this area. This low pressure is transmitted by the clearance 25 between the rotating pipe 22 and the bore of the fixed pipe 21 past the balls 23 to the interior of the housing 19. The pipe 22 is fixed to a ring gear 26 which runs inside the housing afforded by the collar structure 20 around the pipe 21 and the ring gear enters the housing 19 where it meshes with a pinion 27. The pinion 27 is mounted on a shaft 28 and a series of wheel-and-pinion gear sets 29, 30 mesh with each other to successively reduce the rotation provided by the paddle wheel 18 to that supplied to the pinion 27 by a very large amount. The shaft 31 which carries the paddle wheel 18 is also mounted in the housing 19. A port is provided in the housing which communicates with the water surrounding the housing in use and is designed to direct water onto the paddle 18. Since the low pressure which is generated as described within the housing is considerably lower than the pressure surrounding it a jet of water is generated through the aperture and is directed onto the paddle wheel 18 which spins it. This rotation, very much geared down as described causes the slow rotation of the pipe 22. A seal 32 provides a seal against unproductive entry of water into the housingl9. The direction of flow of water is indicated by the arrows 33.
It is to be noted that the device is optimally located close to the pump input where the depression of pressure in the bore of the pipe is the most. Although the device could be located closer to the cleaner foot, the closer it approaches the cleaner foot the less the depression in the pipe and hence the less the motive power to create a jet of water onto the paddle 18.
The port in the housing 19 which directs water on to the paddle wheel 18 can be made a swingable port. It will be mounted, for example, on the shaft 28 and a series of lost motion washers will be provided so as to provide a suitable total number of rotations of the shaft 28 before the nozzle is switched from the position in which it directs a jet of water onto the paddle wheel 18 such as to rotate it in one direction (e.g. clockwise) to a position in which the nozzle directs water onto the paddle wheel to rotate it in the opposite direction (e.g. counter clockwise). This reversal of the direction of the paddle wheel 18 will thus continue for as long as the device is in operation as a result of depressed water pressure in the pipe.

Claims

1. A method of operating a suction side pool cleaner which comprises a cleaner head, a recirculating pump and filter system having an intake and a flexible hose having a connection to the cleaner head and a connection to the intake of the recirculating pump and filter system, which method is characterised by rotating the hose on its own axis during operation of the cleaner head.
2. A method of operating a suction side pool cleaner which comprises a cleaner head, a recirculating pump and filter system having an intake and a flexible hose connecting the cleaner head to the intake of the recirculating pump and filter system, which method is characterised by the cleaner head being rotated relative to the hose.
3. A method of operating a suction side pool cleaner as claimed in claim 1 or claim 2, in which the direction of rotation is reversed periodically between clockwise and counter-clockwise.
4. A suction side automatic pool cleaner which comprises a cleaner head, a recirculating pump and filter system having an intake and a flexible hose having a connection to the cleaner head and a connection to the intake of the recirculating pump and filter system, which cleaner is characterised by a device which rotates the hose on its own axis during operation of the cleaner head and by the connection between the hose and the cleaner head allowing free rotation.
5. A suction side automatic pool cleaner which comprises a cleaner head, a recirculating pump and filter system having an intake and a flexible hose having a connection to the cleaner head and a connection to the intake of the recirculating pump and filter system, which cleaner is characterised by a device which rotates the cleaner head relative to the flexible hose, by the connection of the flexible hose to the intake not allowing free rotation and by the connection between the flexible hose and the cleaner head allowing free rotation.
6. A suction side automatic pool cleaner as claimed in claim 4 or claim 5, characterised by a pipe bend having two ends and a bend between these ends, which pipe bend is relatively rigid compared with the flexibility of the hose and the pipe bend being connected at one end to the flexible hose and at the other end to the cleaner head.
7. A suction side automatic pool cleaner which comprises a cleaner head, a recirculating pump and filter system having an intake and a flexible hose having a connection to the cleaner head and a connection to the intake of the recirculating pump and filter system, which cleaner is characterised by a device which rotates the cleaner head relative to the flexible hose, by the connection between the flexible hose and the intake not allowing free rotation and by the connection of the flexible hose to the intake restricting free rotation.
8. A suction side automatic pool cleaner which comprises a cleaner head, a recirculating pump and filter system having an intake and a flexible hose having a connection to the cleaner head and a connection to the intake of the recirculating pump and filter system, which cleaner is characterised by a device which rotates the hose on its own axis during operation of the cleaner head and by the connection between the hose and the cleaner head restricting free rotation.
9. A suction side pool cleaner as claimed in claim 4,5 6,7 or 8, characterised in that the device which rotates the hose or the cleaner head has a reversing mechanism which is adapted to reverse periodically the direction of rotation between clockwise and counter-clockwise.
10. A suction side pool cleaner as claimed in claim 9, characterised in that the device which rotates the hose or the cleaner head is a water wheel which is motivated by a pressure differential between the water outside the flexible hose and the water inside the flexible hose, with an inlet for water from outside the flexible hose to the water wheel which inlet is located just below the surface of the water outside the flexible hose.
AMENDED CLAIMS
[received by the International Bureau on 30 September 1998 (30.09.98); new claims 11-14 added; remaining claims unchanged (1 page)]
9. A suction side pool cleaner as claimed in claim 4,5 6,7 or 8, characterised in that the device which rotates the hose or the cleaner head has a reversing mechanism which is adapted to reverse periodically the direction of rotation between clockwise and counter-clockwise.
10. A suction side pool cleaner as claimed in claim 9, characterised in that the device which rotates the hose or the cleaner head is a water wheel which is motivated by a pressure differential between the water outside the flexible hose and the water inside the flexible hose, with an inlet for water from outside the flexible hose to the water wheel which inlet is located just below the surface of the water outside the flexible hose.
11. A device adapted to be connected to a filtration system of a swimming pool and for rotating a first segment of hose relative to a second segment, comprising: a. means for receiving the first segment of hose; b. means for receiving the second segment of hose; and c. means for causing the first segment-receiving means to rotate.
12. A device according to claim 11 in which the first segment-receiving means is a first pipe and the second segment-receiving means is a second pipe.
13. A device according to claim 12 in which the second pipe is connected to the filtration system.
14. A device according to claim 13 in which the rotating means comprises a paddle wheel.
Statement Under Article 19(1)
European Publication No. 0 475 736 of Pearce discloses a hydraulic machine in which a hose 24 is connected to a spigot 22 of a ball 18. The ball, in turn, is fitted into a socket 16 of the body 10 of a pool cleaner. Although the Pearce publication describes the ball and socket as "defin[ing] a flexible joint" and mentions "the orientation of the hose . . . will change," it does not discuss any act of rotating the hose about it own axis. The Pearce publication additionally states that the hose is connected to a pool filtration system "in a conventional manner" rather than utilizing any device such as that disclosed in the application.
PCT/US1998/009810 1997-05-13 1998-05-12 Hose rotator for automatic pool cleaner WO1998051888A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74857/98A AU7485798A (en) 1997-05-13 1998-05-12 Hose rotator for automatic pool cleaner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA974101 1997-05-13
ZA97/4101 1997-05-13

Publications (1)

Publication Number Publication Date
WO1998051888A1 true WO1998051888A1 (en) 1998-11-19

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PCT/US1998/009810 WO1998051888A1 (en) 1997-05-13 1998-05-12 Hose rotator for automatic pool cleaner

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WO (1) WO1998051888A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1004723A3 (en) * 1998-11-23 2001-03-14 Letro Products Inc. Back-up valve for pool cleaner
WO2001059236A1 (en) * 2000-02-14 2001-08-16 Kenneth Lewis Hawksworth An automatic pool cleaner accessory
US6279961B1 (en) 1999-11-16 2001-08-28 Polaris Pools Systems, Inc. Rotatable hose coupling
WO2002050390A1 (en) * 2000-12-21 2002-06-27 Kenneth Lewis Hawksworth Performance enhancing automatic pool cleaner accessory
NL1019765C2 (en) * 2002-01-17 2003-07-18 Hendrikus Andreas Pet Schollen Device for inspecting and environmentally friendly mechanical / hydraulic cleaning of underwater surfaces of vessels, swimming pools, aquariums and the like.
WO2003078764A1 (en) * 2002-03-15 2003-09-25 Johannes Stephanus Grobler Guiding apparatus for operating a pool cleaner
WO2004097145A1 (en) * 2003-04-29 2004-11-11 David Alan Bray Adjunct for a swimming pool cleaner
WO2006110928A1 (en) * 2005-04-14 2006-10-19 Man Fui Tak Swimming pool cleaning system
WO2008053298A2 (en) * 2006-10-30 2008-05-08 Arengo 309 (Pty) Limited An apparatus for cleaning swimming pool surfaces
WO2009111806A1 (en) * 2008-03-05 2009-09-11 Johannes Stephanus Grobler Guiding apparatus for guiding the movement of a pool cleaner
WO2014159955A1 (en) * 2013-03-14 2014-10-02 Hayward Industries, Inc. Electric hose swivel for skimmer attachment
US9300101B2 (en) 2014-01-15 2016-03-29 Hayward Industries, Inc. Electric cable swivel and related fabrication methods
US20170159311A1 (en) * 2015-12-02 2017-06-08 Nc Brands L.P. Steering system for pool cleaners
US9814220B2 (en) 2013-06-04 2017-11-14 Jasper Michael VAN AMERONGEN Aquarium filter
CN110792859A (en) * 2019-11-19 2020-02-14 唐建 Spray pipeline connecting device for washing tower
US12013685B2 (en) 2020-10-29 2024-06-18 Hayward Industries, Inc. Systems and methods for mitigating cable twists for underwater cleaners

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EP0475736A1 (en) * 1990-09-11 1992-03-18 Fred International C.V. An hydraulic machine
US5385501A (en) * 1994-07-15 1995-01-31 Fish; Richard I. Aquatic toy

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Publication number Priority date Publication date Assignee Title
EP0475736A1 (en) * 1990-09-11 1992-03-18 Fred International C.V. An hydraulic machine
US5385501A (en) * 1994-07-15 1995-01-31 Fish; Richard I. Aquatic toy

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1004723A3 (en) * 1998-11-23 2001-03-14 Letro Products Inc. Back-up valve for pool cleaner
US6279961B1 (en) 1999-11-16 2001-08-28 Polaris Pools Systems, Inc. Rotatable hose coupling
WO2001059236A1 (en) * 2000-02-14 2001-08-16 Kenneth Lewis Hawksworth An automatic pool cleaner accessory
US7363672B2 (en) 2000-12-21 2008-04-29 Kenneth Lewis Hawksworth Performance enhancing automatic pool cleaner accessory
WO2002050390A1 (en) * 2000-12-21 2002-06-27 Kenneth Lewis Hawksworth Performance enhancing automatic pool cleaner accessory
WO2002050391A1 (en) * 2000-12-21 2002-06-27 Kenneth Lewis Hawksworth Random movement enhancing accessory for an automatic pool cleaner
WO2003059732A1 (en) * 2002-01-17 2003-07-24 Schollen Hendrikus Andreas Pet Apparatus for inspecting and environmentally friendly mechanically/hydraulically cleaning of underwater surfaces of vessels, swimming pools, aquariums etc
NL1019765C2 (en) * 2002-01-17 2003-07-18 Hendrikus Andreas Pet Schollen Device for inspecting and environmentally friendly mechanical / hydraulic cleaning of underwater surfaces of vessels, swimming pools, aquariums and the like.
WO2003078764A1 (en) * 2002-03-15 2003-09-25 Johannes Stephanus Grobler Guiding apparatus for operating a pool cleaner
AU2003223794B2 (en) * 2002-03-15 2008-05-08 Johannes Stephanus Grobler Guiding apparatus for operating a pool cleaner
WO2004097145A1 (en) * 2003-04-29 2004-11-11 David Alan Bray Adjunct for a swimming pool cleaner
WO2006110928A1 (en) * 2005-04-14 2006-10-19 Man Fui Tak Swimming pool cleaning system
US7862712B2 (en) 2005-04-14 2011-01-04 Man Fui Tak Swimming pool cleaning system
WO2008053298A2 (en) * 2006-10-30 2008-05-08 Arengo 309 (Pty) Limited An apparatus for cleaning swimming pool surfaces
WO2008053298A3 (en) * 2006-10-30 2008-07-24 Arengo 309 Pty Ltd An apparatus for cleaning swimming pool surfaces
AU2007315882B2 (en) * 2006-10-30 2014-09-11 Arengo 309 (Pty) Limited An apparatus for cleaning swimming pool surfaces
US8893342B2 (en) * 2006-10-30 2014-11-25 Arengo 309 (Pty) Limited Apparatus for cleaning swimming pool surfaces
WO2009111806A1 (en) * 2008-03-05 2009-09-11 Johannes Stephanus Grobler Guiding apparatus for guiding the movement of a pool cleaner
WO2014159955A1 (en) * 2013-03-14 2014-10-02 Hayward Industries, Inc. Electric hose swivel for skimmer attachment
US9814220B2 (en) 2013-06-04 2017-11-14 Jasper Michael VAN AMERONGEN Aquarium filter
US9300101B2 (en) 2014-01-15 2016-03-29 Hayward Industries, Inc. Electric cable swivel and related fabrication methods
US20170159311A1 (en) * 2015-12-02 2017-06-08 Nc Brands L.P. Steering system for pool cleaners
WO2017096194A1 (en) * 2015-12-02 2017-06-08 Natural Chemistry, Inc. Steering system for pool cleaners
US10513864B2 (en) 2015-12-02 2019-12-24 Nc Brands L.P. Steering system for pool cleaners
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