WO2002086258A1 - An evaporation control device for a body of water - Google Patents
An evaporation control device for a body of water Download PDFInfo
- Publication number
- WO2002086258A1 WO2002086258A1 PCT/AU2002/000483 AU0200483W WO02086258A1 WO 2002086258 A1 WO2002086258 A1 WO 2002086258A1 AU 0200483 W AU0200483 W AU 0200483W WO 02086258 A1 WO02086258 A1 WO 02086258A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover
- edge
- engagement means
- layer
- planar member
- Prior art date
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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
- E04H4/06—Safety devices; Coverings for baths
- E04H4/10—Coverings of flexible material
- E04H4/103—Coverings of flexible material with inflatable chambers
Definitions
- the present invention relates to a device for controlling evaporation of a body of water, such as dams and swimming pools. Still further, the present invention relates to a structure which can be readily assembled on site to a shape and size that matches the size and shape of the body of water.
- the present invention is a laminated cover for reducing the rate of evaporation of a body of water, the cover comprising at least one first layer of material that is relatively heat reflecting and at least one second layer of material that is relatively light absorbing.
- the cover is preferably adapted to be positioned above the body of water with the relatively heat reflecting first layer facing upwardly.
- the cover can include at least one intermediate layer.
- the at least one intermediate layer can be formed from a layer of relatively light absorbing material.
- the at least one intermediate layer can be more or less light absorbing than the second layer.
- the at least one intermediate layer can be formed of the same material as the second layer.
- the cover can include two, three, four or a greater number of intermediate layers.
- the at least one intermediate layer can have a thickness of between about 30 microns and 1.5mm, more preferably between about 40 and 750 microns, more preferably still between about 50 microns and 150 microns, and most preferably about 80 microns.
- the at least one first layer is formed of planar film of substantially constant thickness. In another embodiment, the thickness of the at least one first layer can vary.
- the at least one first layer preferably has a thickness between about 50 and about 350 microns, more preferably between 75 and 150 microns and more preferably still about 100 microns.
- the at least one first layer is preferably white or a similar colour.
- the layer can have a white coating or be intrinsically formed from a white material.
- the at least one first layer can comprise a polymeric film material.
- the polymeric film can comprise a single polymer, a copolymer or a polymer blend.
- Examples of materials used for the first layer can include high density polyethylene, low density polyethylene, polypropylene, polyvinylchlohde, ethyl vinyl acetate, polyamide and polyethylene teraphthalate.
- the polymeric film preferably has one or more additives to stabilise or at least reduce the rate of film degradation due to exposure to ultra-violet (UV) radiation.
- the at least one second layer can include a plurality of sealed cavities disposed in a plane.
- the plurality of sealed cavities with entrapped air provides thermal insulation and bouyancy.
- Each of the sealed cavities preferably extend outwardly from a substantially flat base.
- the cavities each preferably extend outwardly a substantially equal distance from the flat base.
- the cavities can extend outwardly by a distance from the base of between about 0.5 and 10mm, more preferably about 3mm and 7mm, and most preferably about 4mm.
- the polymeric film used in the at least one second layer preferably has a thickness between about 100 and 750 microns, more preferably between 150 and 350 microns, and most preferably about 250 microns. Examples of shapes of sealed cavities can include squares, circles, rectangles, ellipses and triangles.
- Each sealed cavity is preferably substantially circular with a substantially flat base.
- Each cavity preferably has a diameter between about 5mm and 25mm, more preferably between 5mm and 20mm, and most preferably about 15mm.
- Each cavity can be spaced from each of its adjacent cavities by an approximately equal minimum distance. The distance can be between about 1 mm and 10mm, more preferably between about 1 mm and 5mm, and most preferably about 2mm.
- the sealed cavities can be linearly aligned.
- the sealed cavities can be off-set from its immediate neighbours in the y- dimension.
- every alternate sealed cavity in the y-dimension is preferably longitudinally aligned.
- the at least one second layer can comprise a layer of what is commonly known as "bubble wrap".
- the at least one second layer is preferably black or a similar colour.
- the layer can have a black coating or be intrinsically formed from a black material.
- the light absorbing nature of the at least one second layer serves to prevent or substantially prevent light transmission through the cover. This preferably helps to slow or stop photosynthesis in the body of water, and heating of the body of water.
- the at least one second layer can be formed from polymeric film material.
- the polymeric film can comprise a single polymer, a copolymer or a polymer blend. Examples of materials used for the second layer can include high density polyethylene, low density polyethylene, polypropylene, ethyl vinyl acetate, polyvinylchloride, polyamide and polyethylene teraphthalate.
- the polymeric film preferably has one or more additives to stabilise or at least reduce the rate of film degradation due to exposure to ultra-violet (UV) radiation.
- the at least one intermediate layer is preferably black or a similar colour.
- the intermediate layer can have a black coating or be intrinsically formed from a black material.
- the at least one intermediate layer can be formed from polymeric film material.
- the polymeric film can comprise a single polymer, a copolymer or a polymer blend.
- materials used for the intermediate layer can include high density polyethylene, low density polyethylene, polypropylene, ethyl vinyl acetate, polyvinylchloride, polyamide and polyethylene teraphthalate.
- the polymeric film of the intermediate layer can have one or more additives to stabilise or at least reduce the rate of film degradation due to exposure to ultraviolet (UV) radiation.
- UV ultraviolet
- the intermediate layer or layers may act as gas and/or water barriers.
- the laminate can be formed by thermal bonding, co-extruding or ultrasonic welding. Other methods including adhesives may be utilised to adhere the plurality of layers together in certain instances.
- the cover is preferably substantially buoyant and will float if placed on the surface of a body of water.
- the laminate has a plurality of holes formed therein.
- the holes can be regularly or irregularly spaced throughout the laminate.
- the holes preferably have a diameter less than about 20mm, however, other dimensions can be readily envisaged.
- the holes can act to allow escape of gases built up under the laminate through the cover and to allow rain water to pass through the cover.
- the laminate includes a weight means that stops the cover from lifting off the body of water.
- the weight means can be dead weights below, within or above the laminate.
- the weight means can be a is a tubular member filled with water or another liquid or slurry.
- the tubular member can be above, below or within the laminated cover.
- the tubular member can be formed integrally with the laminated cover or formed separately from the cover.
- the laminate cover can have at least one outer edge.
- the laminate cover is substantially rectangular or square in shape, the laminate cover will have parallel or substantially parallel first and second ends, and parallel or substantially parallel first and second side edges.
- the first side edge of a first formed laminate can be adapted to releasably or non-releasably engage with the second edge of another formed laminated cover positioned in side-to-side relationship with said first formed cover.
- the first end of a first formed laminate can be adapted to releasably or non-releasably engage with the second end of another formed laminated cover positioned in top-to-tail relationship with said first formed cover.
- the first edge of a first formed laminate can have an engagement means adapted to releasably or non-releasably engage with a complementary engagement means on the second edge of another laminated cover.
- a similar engagement means can be provided at the first end that is adapted to engage with a complementary engagement means on the second end of said other cover.
- the engagement means can comprise polymeric zip-type components. This allows a plurality of covers to be formed and positioned to cover any sized body of water.
- a single cover can be used to cover a body of water. In another embodiment, more than one cover may be required to cover a particular body of water. In a still further embodiment, it may be decided to only cover a portion of a body of water.
- the present invention provides a method for forming a laminated cover for reducing the rate of evaporation of a body of water, the method including the steps of:
- steps (i) and (ii) could be performed in any order or simultaneously.
- the first and second layers defined in the above method can have any one or more of the features of these layers described above.
- the method can include an additional step of forming at least one intermediate layer, as defined herein, that is then incorporated into the laminate in step (iii).
- the present invention is a component structure of a cover for a body of water, the structure comprising a planar member having a first edge and at least a second edge, the first edge having an engagement means along at least a portion of its length and the second edge having an engagement means complementary to that of the first edge engagement means along at least a portion of its length, the first edge engagement means being engageable with a complementary second edge engagement means of a first other planar member and the second edge engagement means being engageable with a first edge engagement means of a second other planar member.
- the present invention provides a method of forming a cover for a body of water comprising the steps of:
- step (ii) determining the dimensions of the body of water; and (iii) engaging the component structures to form a cover that at least substantially matches the dimensions of the body of water defined in step (ii).
- the planar member will have a first edge and a second edge. Where the planar member is substantially rectangular or square in shape, the planar member will preferably have parallel or substantially parallel first and second side edges. The first side edge of a first planar member is adapted to engage with the second edge of another planar member positioned in side-to-side relationship with said first planar member.
- planar member can have parallel or substantially parallel first and second ends.
- the first end of a first planar member can be adapted to engage with the second end of still another planar member positioned in top-to-tail relationship with said first planar member.
- the first edge of a first planar member has an engagement means, or first edge engagement means, adapted to engage with a complementary engagement means on the second edge, or the second edge engagement means, of another planar member.
- a similar engagement means can be provided at the first end of the planar member that is adapted to engage with a complementary engagement means on the second end of still another planar member.
- the above defined engagement means can be a releasable engagement means.
- Examples of engagement means can include zipping devices, snap-lock devices, interlocking mechanisms, clips and pins.
- the respective engagement means are preferably a polymeric zip-type interengagement means.
- the polymeric zip-type interengagement means can be formed from a single polymer, a copolymer, a polymer blend or a co- extrusion.
- the polymeric zip-type interengagement means preferably has one or more additives to stabilise or at least reduce embrittlement and degradation due to exposure to ultra-violet (UV) radiation.
- the respective polymeric engagement means can be attached to the planar members by adhesive bonding, thermal fusing, flame lamination, ultrasonic welding, extrusion bonding, sewing, riveting, pressure sensitive tapes or heat reactivatable tapes.
- a zipping device is used to releasably engage the first edge engagement means and the complementary second edge engagement means.
- the zipping device is constructed in a manner such that the first edge and second edge engagement means enter the zipping device in an unengaged state and exit the zipping device in an engaged state.
- the first edge and second edge engagement means can be disengaged or (released) by drawing the first edge and second edge engagement means, whilst in an engaged state, through the zipping device in the opposite direction to the direction used to engage the first edge and second edge engagement means, as described above or by using a peeling action.
- each planar member is preferably made from at least one layer of a polymeric film.
- the polymeric film can comprise a single polymer, a copolymer or a polymer blend.
- Examples of polymeric materials used can include high density polyethylene, low density polyethylene, polypropylene, polyvinylchloride, ethyl vinyl acetate, polyamide and polyethylene teraphthalate.
- the polymeric film preferably has one or more additives to stabilise or at least reduce the rate of film degradation due to exposure to ultra-violet (UV) radiation.
- the cover is preferably adapted to be positioned above the body of water.
- the planar member is preferably made of at least one layer of a polymeric film, such as that defined above, and at least one layer of an expanded polymeric foam adhered to the at least one polymeric film such that the planar member is buoyant when applied to the surface of a body of water.
- the at least one layer of polymeric film can be adhered to at least one side of the at least one layer of expanded polymeric foam.
- planar member is made from a laminated cover as defined herein as the first aspect of the invention.
- the types of bodies of water that can be covered by the covers of the above aspects can be natural or artificial bodies of water.
- the body of water can be a swimming pool, eg. a 10m or 50m swimming pool.
- the body of water can be a swimming pool of irregular shape.
- the body of water can be a dam or a reservoir built on a farming property.
- the dam may have dimensions up to or greater than 1 ,000,000 square metres.
- the bodies of water may have symmetrical or non- symmetrical shapes.
- Planar members which have the correct geometric shape can be used in conjunction with planar component member of other geometric shapes such that the cover when assembled covers the required dimensions of the body of water.
- Figure 1 is a cross sectional view of the laminated cover
- Figure 2 is a schematic view of sealed cavity arrangement
- Figure 3 is an example of laminate cover arrangements
- Figure 4 is an example of an engagement means
- Figure 5 is an example of a zipping device
- Figure 6 is a cross-sectional view of an example of a zipping device.
- Figure 7 is transverse sectional views of an example of engagement means being engaged in a zipping device.
- the laminate cover 1 includes a first layer 2, a second layer 3 and an intermediate layer 4.
- the depicted first layer 2 is formed from a planar polymeric film, of a substantially constant thickness. It will be appreciated that the film 2 could vary in thickness.
- the polymeric film 2 may be a polymer, copolymer or mixed polymer blend. Examples of materials used for the first layer include high density polyethylene, low density polyethylene, polypropylene, polyvinylchloride, polyamide, ethyl vinyl acetate and polyethylene teraphthalate.
- the depicted first layer 2 has one or more additives to reduce or stabilise the rate of polymeric film degradation from exposure to ultra-violet (UV) light.
- UV ultra-violet
- the depicted first layer 2 preferably has a thickness between about 50 and about 200 microns, more preferably between 75 and 150 microns and more preferably still about 100 microns.
- the depicted first layer 2 is coloured white and is formed from an intrinsically of a white material. While not depicted, the first layer 2 can be coloured white by applying at coating or suitable pigment.
- the second layer 3 is relatively thermally insulating in comparison with the first layer 2 by virtue of the encapsulation of air within the sealed cavities 5.
- the second layer 3 is relatively light absorbing in comparison with the first layer 2.
- the second layer 3 is black in colour, and is formed from an intrinsically black material.
- the light absorbing nature of the second layer 3 serves to prevent or substantially prevent light transmission through the cover. This helps to slow or stop photosynthesis and heating in the body of water when covered by the cover.
- the second layer 3 is formed from a polymeric material. Examples of materials used for the first layer include high density polyethylene, low density polyethylene, polypropylene, polyvinylchloride, polyamide and polyethylene teraphthalate.
- the second layer 3 has one or more additives to reduce or stabilise the rate of polymeric film degradation from exposure to ultra-violet (UV) light.
- the polymeric film used in the second layer 3 preferably has a thickness between about 100 and 500 microns, more preferably between 150 and 300 microns, and most preferably about 250 microns.
- the second layer 3 has a plurality of sealed cavities 5 disposed in a plane parallel to the plane of the second layer 3. Each of the sealed cavities 5 preferably extend outwardly perpendicular to the plane of the second layer 3 a substantially equal distance from the place of the second layer 3.
- the cavities 5 can extend outwardly by a distance of between about 0.5 and 10 mm, more preferably between about 1 m and 5 mm and most preferably about 3 mm.
- the depicted intermediate layer 4 is formed from a layer of relatively light absorbing material, and in this case of the same material as the second layer 3. While there can be just a single intermediate layer 4, it will be appreciated that there could be two, three, four or more intermediate layers.
- the intermediate layer can have a black coating or be intrinsically formed from a black material.
- the at least one intermediate layer 4 can have a thickness of between about 30 and 120 microns, more preferably between 45 and 90 microns, and most preferably about 60 microns.
- the polymeric film of the intermediate layer 4 can have one or more additives to stabilise or at least reduce the rate of film degradation due to exposure to ultra-violet (UV) radiation. In alternate configurations, the intermediate layer 4 may act as gas and/or water barriers.
- the plurality of sealed cavities 5 formed from the second layer 3, are preferably substantially circular, with a substantially flat face 6.
- the diameter of each cavity is preferably between about 5mm and 25mm, more preferably between 5 mm and 20 mm, and most preferably about 15mm.
- An example of a schematic configuration of the sealed cavities 5 is shown in Figure 2.
- Each sealed cavity 5 can be spaced from each of its adjacent cavities by an approximate equal minimum distance. The distance can be between about 1 mm and 10mm, more preferably between about 1 mm and 5mm, and most preferably about 2mm. In a first direction along the plane of the second layer 3, the sealed cavities 5 can be linearly arranged.
- the sealed cavities 5 can be off-set from its immediate adjacent cavities in the second direction.
- every alternate sealed cavity 5 in the second direction is preferably longitudinally aligned.
- the second layer 3 can comprise what is commonly known as "bubble wrap".
- the laminate cover 1 can be formed by bringing into abutment the first layer 2 of a polymeric material that is relatively heat reflecting with the second layer 3 that is of a polymeric material relatively light absorbing and thermal bonding and/or thermoforming the first layer 2 and the second layer 3. Other methods including adhesives may be utilised to adhere the plurality of layers together in certain instances.
- the intermediate layer 4 can be included in the laminate cover between the first layer 2 and the second layer 3, and the lamination process performed simultaneously.
- the second layer 3 can be formed in a manner such that the sealed cavities 5 are formed.
- the laminate cover 1 may be adapted to be positioned above a body of water, with the relatively heat reflecting first layer 2 facing upward.
- the plurality of sealed cavities can be such that the laminate cover 1 is substantially buoyant and will float if placed on the surface of a body of water.
- the laminate cover 1 can have a plurality of drainage or breather holes 7 passing through the layers of the laminate cover 1 , such that air or gases built up under the laminate cover 1 can escape.
- the holes can be regularly or irregularly spaced throughout the laminate cover 1.
- the drainage hole preferably have a diameter between about 3mm and 35mm, more preferably between about 10mm and 20mm and most preferably about 15mm.
- the laminate cover 1 can have at least one outer edge. Where the laminated cover 1 is substantially rectangular or square in shape, as shown in Figure 3 (a) and Figure 3 (b), the laminate cover will have parallel or substantially parallel first and second ends, and parallel or substantially parallel first and second side edges.
- the first side edge 8 of a first formed laminate 9 can be adapted to releasably or non-releasably engage with the second edge 10 of another formed laminated cover 11 positioned in side-to-side relationship with said first formed cover.
- the first end 12 of a first formed laminate 13 can be adapted to releasably or non-releasably engage with the second end 14 of another formed laminated cover 15 positioned in top- to-tail relationship with said first formed cover.
- first edge 8 of a first formed laminate 9 can have an engagement means adapted to releasably or non-releasably engage with a complementary engagement means on the second edge 10 of another laminated cover 11.
- a similar engagement means can be provided at the first end 12 of a first formed cover 13 that is adapted to engage with a complementary engagement means on the second end 14 of said other cover 15.
- the engagement means can consist of polymeric zip-type components. This allows a plurality of covers to be formed and positioned to cover any sized body of water.
- the types of bodies of water of which the laminate cover 1 is applied to can be natural or artificial bodies of water.
- the body of water can be a swimming pool, for example a home pool, a 10m, 25m or a 50m swimming pool.
- the body of water can be a dam built on a farming property.
- the dam may have dimensions up to or greater than 1 ,000,000 square metres.
- the bodies of water may have symmetrical or non- symmetrical shapes.
- a single cover can be used to cover a body of water.
- more than one cover may be required to cover a particular body of water. In some circumstances, it may be decided to only cover a portion of a body of water.
- first edge 8 of a first formed member 9 can have a first edge engagement means adapted to releasably engage with a complementary second edge engagement means on the second edge 10 of another member 11.
- a similar engagement means can be provided at the first end 14 of a first formed member 15 that is adapted to engage with a complementary engagement means on the second end 12 of another member 13.
- first edge and second edge engagement means can consist of polymeric zip-type components. This allows a plurality of covers to be formed preferably at the site of the body of water and then positioned to cover the body of water.
- FIG 4 (a) An example of a zip-type first edge engagement means 30 is shown in Figure 4 (a).
- An engagement means is attached to a first edge of a planar member 20 of the cover 1.
- the engagement means 30 can be attached to the planar member 20 by adhesive bonding, thermal fusing, flame lamination, ultrasonic welding, extrusion bonding, sewing, riveting, pressure sensitive tapes or heat reactivatable tapes.
- An example of a first edge engagement means 30 and a complementary second edge engagement means 31 in an engaged configuration is shown in Figure 4 (b).
- FIG. 5 An example of a zipping device 40 used to engage two engagement means 30, 31 of Figure 4 is shown in Figure 5.
- Figure 5 (a) shows an entrance end in which two complementary engagement means 30, 31 are inserted in the zipping device 40.
- Figure 5 (b) shows the exit end of the zipping device 40 from which the first edge engagement means 30 and the complementary second edge engagement means 31 emerge in an engaged configuration.
- the zipping device 40 is constructed in such a way that the first edge and second edge engagement means 30, 31 are progressively stretched open and drawn closer to each other and in a manner such that when emerging from the zipping device 40, the first edge engagement means 30 and the complementary second edge engagement means 31 engagement means are releasably engaged.
- a cross sectional view of the zipping device 40 at various positions is shown in Figure 6.
- first edge engagement means 30 and a complementary second edge engagement means 31 are shown in cross-sectional views in Figure 7, corresponding to regions 41 , 42, 43, 44 and 45 along the longitudinal axis of the zipping device 40 in Figure 6.
- FIG 7 (a) the first edge engagement means 30 and the complementary second edge engagement means 31 , are shown when entering the zipping device at region 41. As the first edge engagement means 30 and a complementary second edge engagement means 31 progress to region 42, the first edge engagement means 30 and the complementary second edge engagement means 31 are stretched open and drawn closer together as shown in Figure 7 (b).
- Figure 7 (c) shows the first edge engagement means 30 and the complementary second edge engagement means 31 at the region 43 stretched open further apart still, and drawn closer still to each other.
- Figure 7(d) shown the first edge engagement means 30 and the complementary second edge engagement means 31 corresponding to region 44, stretched open to an extent such that engagement is possible.
- Figure 7(e) shows the first edge engagement means 30 and the complementary second edge engagement means 31 drawn closer still such that engagement is achieved, and the first edge engagement means 30 and the complementary second edge engagement means 31 means emerging from the zipping device in an engaged state.
- the first edge engagement means 30 and the complementary second edge engagement means 31 can be released by feeding the first edge engagement means 30 and the complementary second edge engagement means 31 , whilst in an engaged state through the zipping device 40 in the opposite direction to as previously described such that the first edge engagement means 30 and the complementary second edge engagement means 31 are stretched open and drawn apart.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002248975A AU2002248975B2 (en) | 2001-04-19 | 2002-04-18 | An evaporation control device for a body of water |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPR4502 | 2001-04-19 | ||
AUPR4502A AUPR450201A0 (en) | 2001-04-19 | 2001-04-19 | A method of forming a pool cover |
AUPR004501 | 2001-04-19 | ||
AUPR4501 | 2001-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002086258A1 true WO2002086258A1 (en) | 2002-10-31 |
Family
ID=25646437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2002/000483 WO2002086258A1 (en) | 2001-04-19 | 2002-04-18 | An evaporation control device for a body of water |
Country Status (1)
Country | Link |
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WO (1) | WO2002086258A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011039520A2 (en) | 2009-10-02 | 2011-04-07 | Plastipack Limited Et Al | Plastic sheeting and a mould therefor |
FR3061502A1 (en) * | 2017-01-02 | 2018-07-06 | Max Roumagnac | PERFECTLY SWIMMING POOL COVER |
US10920438B2 (en) | 2016-02-08 | 2021-02-16 | Aloi Group Pty Ltd | Pool cover systems and methods |
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AU4006085A (en) * | 1984-03-16 | 1985-09-19 | Aquatan Pty. Ltd. | Reservoir cover |
US5546615A (en) * | 1994-11-14 | 1996-08-20 | Waste Management & Design, Inc. | Method and device for providing an insulated cover over a pool |
US5843554A (en) * | 1994-02-18 | 1998-12-01 | Katman, Inc. | Multi-layer covering articles |
AU6446099A (en) * | 1998-12-10 | 2000-06-15 | Peter James CHAPMAN | Modular floating covers for water storages (evaporation prevention cover) |
CA2262051C (en) * | 1999-01-08 | 2000-07-25 | Cpi Packaging, Inc. | Pool cover |
CA2326022A1 (en) * | 1999-11-19 | 2001-05-19 | Claude J. Degarie | Membrane cover for wastewater reservoir and drainage system therefor |
US6286155B1 (en) * | 1996-11-12 | 2001-09-11 | Midwest Canvas Corporation | Pool cover having integral reflective solar heating and insulative properties |
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2002
- 2002-04-18 WO PCT/AU2002/000483 patent/WO2002086258A1/en not_active Application Discontinuation
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AU4006085A (en) * | 1984-03-16 | 1985-09-19 | Aquatan Pty. Ltd. | Reservoir cover |
US5843554A (en) * | 1994-02-18 | 1998-12-01 | Katman, Inc. | Multi-layer covering articles |
US5546615A (en) * | 1994-11-14 | 1996-08-20 | Waste Management & Design, Inc. | Method and device for providing an insulated cover over a pool |
US6286155B1 (en) * | 1996-11-12 | 2001-09-11 | Midwest Canvas Corporation | Pool cover having integral reflective solar heating and insulative properties |
US20010025388A1 (en) * | 1996-11-12 | 2001-10-04 | Gary Handwerker | Pool cover and the like having integral reflective solar heating and insulative means |
AU6446099A (en) * | 1998-12-10 | 2000-06-15 | Peter James CHAPMAN | Modular floating covers for water storages (evaporation prevention cover) |
CA2262051C (en) * | 1999-01-08 | 2000-07-25 | Cpi Packaging, Inc. | Pool cover |
CA2326022A1 (en) * | 1999-11-19 | 2001-05-19 | Claude J. Degarie | Membrane cover for wastewater reservoir and drainage system therefor |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2011039520A2 (en) | 2009-10-02 | 2011-04-07 | Plastipack Limited Et Al | Plastic sheeting and a mould therefor |
WO2011039520A3 (en) * | 2009-10-02 | 2011-05-26 | Plastipack Limited | Plastic sheeting and a mould therefor |
AU2010302489B2 (en) * | 2009-10-02 | 2015-02-26 | Plastipack Limited | Plastic sheeting and a mould therefor |
US9303422B2 (en) | 2009-10-02 | 2016-04-05 | Plastipack Limited | Plastic sheeting and a mould therefor |
US10920438B2 (en) | 2016-02-08 | 2021-02-16 | Aloi Group Pty Ltd | Pool cover systems and methods |
FR3061502A1 (en) * | 2017-01-02 | 2018-07-06 | Max Roumagnac | PERFECTLY SWIMMING POOL COVER |
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