WO2000040826A1 - Pool cleaner - Google Patents
Pool cleaner Download PDFInfo
- Publication number
- WO2000040826A1 WO2000040826A1 PCT/ZA1999/000097 ZA9900097W WO0040826A1 WO 2000040826 A1 WO2000040826 A1 WO 2000040826A1 ZA 9900097 W ZA9900097 W ZA 9900097W WO 0040826 A1 WO0040826 A1 WO 0040826A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- passage
- pool cleaner
- cleaner according
- inlet
- outlet
- Prior art date
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
- E04H4/1654—Self-propelled cleaners
- E04H4/1663—Self-propelled cleaners the propulsion resulting from an intermittent interruption of the waterflow through the cleaner
Definitions
- This invention relates to a pool cleaner.
- the present invention is concerned, in the first instance, with a pool cleaner
- cleaner which includes a body, at least one passage which extends through the
- the passage having a minimum cross-sectional
- the said position of minimum cross-sectional area is at the outlet.
- the pool cleaner may include a partition which divides the passage into first and
- the partition when used, may be formed integrally with the remainder of the partition
- the partition is formed separately from the body and is engaged with formations
- the pool cleaner may include a chamber adjacent the inlet which is in
- the closure member is preferably formed so that a gap is formed between a
- this gap is approximately equal to the width of the
- the closure member may be domed or have any other suitable shape, or be
- the cleaner may include flotation means which may be elongate, extending in
- the flotation means comprises a plurality of
- the flotation means may be formed separately and may then be embedded in
- the flotation means is formed integrally with the body by
- foaming material from which the body is made during manufacture of the body is made during manufacture of the body.
- material of the body is directly caused to foam, by means of chemical action, or
- the material is foamed by the introduction of a foaming agent of any appropriate
- the flotation means is preferably located on what in use is an upper side of the
- biasing means which may be in the form
- Figure 1 is a side view of a pool cleaner according to the invention in the
- Figure 2 is a perspective illustration of a core used in the process of
- Figure 3 is an end view of a mouth of the pool cleaner shown in Figure 1 ;
- Figure 4 is a cross-sectional view of a body of the pool cleaner taken on a line
- Figure 5 is a perspective view of a partition and hammer used in the pool
- Figure 6 is an end view of the body of the pool cleaner with a cover plate in an
- Figure 7 is a cross-sectional side view of a modification of the pool cleaner
- Figure 8 is a front view of the modification of Figure 7;
- Figure 9 is a view of a pool cleaner body which is similar to that shown in Figure
- Figure 10 is a side view of a pool cleaner according to a different form of the
- FIG 11 illustrates a flow interrupting device which is used in the pool cleaner
- Figure 10 shows the components of Figures 10 and 11 assembled.
- FIG. 1 of the accompanying drawings illustrates a pool cleaner body 10 in the
- the body is formed inside a first mould member 12
- the mould member 14 referred to herein as a core.
- the mould member 12 is made from
- the core 14 is precisely positioned inside a cavity 16 which defines an outer
- a suitable plastics material such as polypropylene is then injected into the cavity
- An objective of the present invention is to provide a pool cleaner body which is
- the body has a unitary type construction.
- weights are traditionally used in a manner which is determined empirically and which depends inter alia on the depth of the swimming pool in which the cleaner is used.
- a second benefit is that the applicant has noticed that the pool cleaner body is
- the pool cleaner body is able to rotate in a manner which reduces the likelihood that the pool cleaner will become trapped at awkward locations under water, for example at corners or steps.
- the pool cleaner body 10 includes an
- elongate flotation component 18 which, in this example of the invention, is
- foamed material such as polystyrene or foamed
- the pool cleaner body also includes a lead weight or bias component 20 embedded in the body.
- the core 14 is shown in perspective in Figure 2.
- the core has a central section
- ribs are on opposed sides of the central section. Only one rib is visible in Figure
- the central section of the core is formed with a first pair of recesses 30 on one
- the lead weight are precisely positioned relatively to the core.
- the core is then
- the core extends between opposed ends 36 and 38 of the body and, once
- passage has an inlet 42 and an outlet 44.
- the passage at the outlet, has a
- the core also has no steps or discontinuities
- the central section 22 is formed with a taper of r and
- the inlet 42 does not include a step or undercut formation which could prevent
- the core as is evident particularly from Figure 2, has
- the core has a solid section 50 which is mainly provided for purposes of utility
- plastic material such as polypropylene 50 of a suitable
- the fact that the central section 22 is tapered, means that only a
- the spigots 34 are sheared.
- the spigots are, as has been noted, anchored to the body and to the flotation component 18 and the
- the spigots do not have substantial strength and the relative movement referred to is sufficient to break the spigots so that the core can be
- the invention thus provides a method of constructing a pool cleaner body with
- Adjacent the inlet 42 the core and mould member 12 are shaped to define an
- the inlet has a surrounding shoulder 58.
- the body has a length 60 and the flotation component 18 has a length 62,
- the length 62 is preferably in excess of 25% of the length 60 and more
- the flotation component 18 is on an upper side of the pool cleaner body in use
- the body 10 formed in the manner described, is integral and has a
- Figure 3 is an end view of the cleaner illustrating only the inlet 42, which is of
- Slots 64 are formed on diametrically opposed sides of the passage by
- Figure 4 is a cross-sectional view of the cavity 16 and core 14 taken on the line
- Figure 6 is an end view of the cleaner and illustrates the flange 52 which
- Figure 6 also illustrates a closure or cover plate 70 which is separately moulded and which includes a centrally
- the body 10 has four relatively small inwardly extending flexible projections 74 surrounding the inlet 42.
- the cover plate 70 is
- the projections then revert to the illustrated positions to keep the cover plate in position firmly fixed to the pool cleaner body.
- the cover plate can easily be
- Figure 5 shows a pre-formed partition 80 which includes an elongate section 82
- a flow interrupting device which is in the form of a V-shaped
- hammer 88 has a leading end 90 which is locatable in the groove formation 84.
- the hammer is capable of moving to and fro as is indicated by means of an arrow 92, relatively to the partition 80, between limiting positions which are defined by arms of the V-shaped groove.
- the partition 80 is designed to fit into the slots 64 in the inner wall of the partition
- the pool cleaner is used in a manner which is known in the art and which is
- the water flow alternatively surges through the two sub-passages 94 and 96 which are formed by the partition 80 which divides the main passage 40 into two D-shaped sub-
- Figures 7 and 8 illustrate from the side and front respectively an important
- the flat cover plate 70 of Figure 6 is replaced by a dome-shaped cover plate
- the width 93 is substantially equal to the maximum width 95 of a gap 97 which
- valve chamber is readily cleaned simply by removing the cover plate to access the hammer and
- partition 80 is dispensed with for opposed edges 99 of the hammer, at its apex,
- the flotation components are of a size
- the components 18A may be any suitable buoyancy imparted to the body over its length.
- the components 18A may be any suitable buoyancy imparted to the body over its length.
- the components 18A may be any suitable buoyancy imparted to the body over its length.
- the components 18A may be any suitable buoyancy imparted to the body over its length.
- FIG. 10 to 12 illustrate the principles of the invention applied to the
- Figure 10 shows a pool cleaner body 100 which is moulded
- the body which has a unitary one piece body.
- the body includes an internal passage 102
- outlet 106 at one end of the body. Between the region 104 and the outlet 106
- the passage is flared and hence increases monotonically moving to the right.
- the passage at an opposing end has an inlet 108 and the cross-sectional area
- the passage has a first section 110 with a first taper which
- section 112 which is also tapered so that, moving from right to left, the cross-
- a shoulder 114 is at a junction of the
- the body has a mouth 116 which is surrounded by an outwardly extending flange 118.
- a flexible skirt 120 is engaged with the flange.
- a biasing weight 122 is embedded in the body, using the technique which has been described in connection with Figure 1. In the aforementioned respects the
- pool cleaner body 100 is similar in concept to the pool cleaner body 10 shown in Figure 1.
- the body 100 also includes a flotation component 124 which may be separately formed and which is then embedded in the body during manufacture of the body.
- the component 124 may be formed integrally with the body by foaming the material from which the body is made.
- the body is formed from a plastics material and this may
- the body may be foamed in a number of ways.
- the body may be foamed by the introduction
- the thickness of the body is greater than a predetermined amount
- volume is formed in which foaming action takes place and, in this way, the
- component 124 can be formed integrally with the material of the body.
- foaming action may be initiated in various ways which are known in the plastics
- the body is formed with a substantial amount of cells which impart to such
- the body has a removable bumper strip 126 which is made from a material such as
- Figure 10 shows the cross-section of the strip.
- the bumper strip has an elongate rib 128 with a bulbous end 130 which is engageable with a press fit into a slot 132 of corresponding dimensions formed in a lower longitudinal edge of the body.
- FIG 11 illustrates a flow interrupting mechanism 136 which is of known
- the device 136 is insertable into the passage 102 through the inlet 108.
- the diaphragm 140 seats on a shoulder 142 and a remote end
- a swivel connector 154 extends from the nut and is connectable to a suction
- valve 140 causes the valve to open and close, in a manner which is known in
- length 160 of the elongate flotation component is considerably in excess of 25% of the length 162 of the pool cleaner body, between the inlet and the outlet, and
- the body is of a unitary construction.
- the foamed flotation component is particularly useful for it eliminates a separate
- the weight can be eliminated. It may however be necessary to enlarge the solid
- region of minimum cross-sectional area is at an intermediate position in the
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Extraction Or Liquid Replacement (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Cleaning In General (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99952046A EP1163410B1 (en) | 1999-01-06 | 1999-09-18 | Pool cleaner |
AU64348/99A AU759119B2 (en) | 1999-01-06 | 1999-09-18 | Pool cleaner |
DE69913205T DE69913205T8 (en) | 1999-01-06 | 1999-09-18 | POOL CLEANER |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA99/0070 | 1999-01-06 | ||
ZA9970 | 1999-01-06 | ||
ZA992058 | 1999-03-15 | ||
ZA99/2058 | 1999-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000040826A1 true WO2000040826A1 (en) | 2000-07-13 |
Family
ID=27145127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ZA1999/000097 WO2000040826A1 (en) | 1999-01-06 | 1999-09-18 | Pool cleaner |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1163410B1 (en) |
CN (1) | CN1134580C (en) |
AU (1) | AU759119B2 (en) |
DE (1) | DE69913205T8 (en) |
ES (1) | ES2212855T3 (en) |
WO (1) | WO2000040826A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005038170A1 (en) * | 2003-10-15 | 2005-04-28 | Integrated Pool Products (Proprietary) Limited | Submerged surface cleaner |
FR2914868A1 (en) * | 2007-10-08 | 2008-10-17 | Kokido Ltd | Automatic cleaning device for e.g. wall of swimming pool, has valve cooperated with seat to adopt closing positions in which valve closes pipes during functioning, and prefilter placed in head to avoid blocking of valve through debris |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133068A (en) * | 1976-08-23 | 1979-01-09 | Hofmann Helmut J | Cleaning apparatus for submerged surfaces |
US4208752A (en) * | 1976-08-23 | 1980-06-24 | Hofmann Helmut J | Cleaning apparatus for submerged surfaces |
DE3608430A1 (en) * | 1985-03-14 | 1986-09-18 | Coxwold (Proprietary) Ltd., Johannesburg, Transvaal | SWIMMING POOL CLEANING DEVICE |
US5737791A (en) * | 1995-05-31 | 1998-04-14 | Durigon; Duilio | Cleaner for a submerged surface |
-
1999
- 1999-09-18 EP EP99952046A patent/EP1163410B1/en not_active Expired - Lifetime
- 1999-09-18 CN CNB998164186A patent/CN1134580C/en not_active Expired - Fee Related
- 1999-09-18 DE DE69913205T patent/DE69913205T8/en active Active
- 1999-09-18 ES ES99952046T patent/ES2212855T3/en not_active Expired - Lifetime
- 1999-09-18 WO PCT/ZA1999/000097 patent/WO2000040826A1/en active IP Right Grant
- 1999-09-18 AU AU64348/99A patent/AU759119B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133068A (en) * | 1976-08-23 | 1979-01-09 | Hofmann Helmut J | Cleaning apparatus for submerged surfaces |
US4208752A (en) * | 1976-08-23 | 1980-06-24 | Hofmann Helmut J | Cleaning apparatus for submerged surfaces |
DE3608430A1 (en) * | 1985-03-14 | 1986-09-18 | Coxwold (Proprietary) Ltd., Johannesburg, Transvaal | SWIMMING POOL CLEANING DEVICE |
US5737791A (en) * | 1995-05-31 | 1998-04-14 | Durigon; Duilio | Cleaner for a submerged surface |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005038170A1 (en) * | 2003-10-15 | 2005-04-28 | Integrated Pool Products (Proprietary) Limited | Submerged surface cleaner |
FR2914868A1 (en) * | 2007-10-08 | 2008-10-17 | Kokido Ltd | Automatic cleaning device for e.g. wall of swimming pool, has valve cooperated with seat to adopt closing positions in which valve closes pipes during functioning, and prefilter placed in head to avoid blocking of valve through debris |
US20090089945A1 (en) * | 2007-10-08 | 2009-04-09 | Kokido Limited | Automatic cleaning device for a surface submerged in a liquid |
EP2048306A1 (en) * | 2007-10-08 | 2009-04-15 | Kokido Limited | Device for automatic cleaning of a surface submerged in a liquid |
US8209807B2 (en) | 2007-10-08 | 2012-07-03 | Kokido Limited | Automatic cleaning device for a surface submerged in a liquid |
Also Published As
Publication number | Publication date |
---|---|
DE69913205T2 (en) | 2004-09-09 |
ES2212855T3 (en) | 2004-08-01 |
DE69913205D1 (en) | 2004-01-08 |
EP1163410A1 (en) | 2001-12-19 |
CN1344345A (en) | 2002-04-10 |
DE69913205T8 (en) | 2006-02-09 |
CN1134580C (en) | 2004-01-14 |
AU6434899A (en) | 2000-07-24 |
AU759119B2 (en) | 2003-04-03 |
EP1163410B1 (en) | 2003-11-26 |
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