CLEANING DEVICE FOR ARTIFICIAL POOLS
A cleaning device for artificial pools comprises a flexible sheet formed from an oleophilic and hydrophobic material, and that is buoyant in water. In a preferred embodiment, the sheet is circular and is formed from a plurality of individual layers secured in overlapping relation to one another. Each of the layers comprises a fibrous mat composed of fibers of high melt-flow polypropylene.
The present invention relates to artificial pools, and more particularly to cleaning devices for artificial pools.
BACKGROUND OF THE INVENTIONFor many people, few activities on a hot day are as pleasant and refreshing as a swim, and many people have backyard (or even indoor) swimming pools for this very purpose. In addition, many people like to relax in a smaller pool heated to a higher temperature, often referred to as a “hot tub”. Some people may have both a swimming pool and a hot tub, and may alternate between them, warming up in the hot tub after they become cold from swimming.
There is a darker side to such frolic, however. As owners of such swimming pools and hot tubs will appreciate, elaborate effort is required to maintain the water in a condition suitable for human use. The water must be chlorinated to inhibit the growth of bacteria, and the pH level must be carefully controlled. Sophisticated filtration systems are used to circulate and filter the water, and long-handled nets are used to remove floating debris. Such systems are suitable for their purpose, but even with all of these measures, unwanted oil-based foreign matter can accumulate, often introduced by the bathers themselves. Examples of such oil-based detritus include oil residues from perspiration, body oil, sun protection and tanning lotions, insect repellents, shampoos and conditioners, cosmetics and fragrances and aromatherapy products, and the like. This material can form an unsightly foam (often referred to as “scum”) on the water's surface, particularly at the edges where it can adhere to the walls of a swimming pool or hot tub and then dry and harden, making it difficult to clean.
Human-constructed swimming pools and hot tubs are referred to herein as “artificial pools”, to distinguish them from naturally occurring bodies of water, such as oceans, seas, lakes, rivers, hot springs and even “swimming holes”.
SUMMARY OF THE INVENTIONIn one aspect, the present invention is directed to a cleaning device for artificial pools. The cleaning device comprises a flexible sheet formed from an oleophilic and hydrophobic material and that is buoyant in water. In a preferred embodiment, the sheet is a circular sheet.
The sheet may be formed from a plurality of individual layers secured in overlapping relation to one another, and each layer may comprise a fibrous mat containing fibers having a diameter between about 8 microns and about 18 microns. The fibers may be fibers of high melt-flow polypropylene. The polypropylene may have a specific gravity of 0.8 and a basis weight of 450 grams per square meter.
In one embodiment, the sheet is circular and has a diameter of about 11.5 inches, and in another embodiment, the sheet is circular and has a diameter of about 23.5 inches.
In another aspect, the method is directed to a method for cleaning an artificial pool. The method comprises the steps of providing at least one flexible sheet formed from an oleophilic and hydrophobic material and that is buoyant in water, placing the at least one sheet in the artificial pool, and allowing the at least one sheet to float on the surface of water in the artificial pool. The method may further comprise removing the at least one sheet from the artificial pool, rinsing at least a downside surface of the at least one sheet with water, and replacing the at least one sheet in the artificial pool.
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings wherein:
With reference now to
In a preferred embodiment, the sheet 12 is circular, that is, the sheet 12 has a circular outer perimeter 14 so as to take the form of a disc. The sheet 12 is flexible so that when placed in an artificial pool, the sheet 12 will conform to the surface of the water to maintain constant contact across the breadth of the sheet 12. Cleaning devices comprising circular sheets according to aspects of the present invention may have different sizes, depending on the size of the artificial pool with which they are to be used. For example, as shown in
Now referring to
Referring now to
As the cleaning device 10 floats in the artificial pool 32, it will bump against the walls 34 thereof. Because the cleaning device 10 comprises a flexible sheet 12, it will undulate with the wave motion at the surface 30 of the water 31. As such, where the walls 34 of the artificial pool 32 are clean, when the sheet 12 abuts a wall 34 of the artificial pool 32, the circular edge 14 of the sheet 12 will rub vertically against the wall 34, providing a gentle scrubbing action which helps to prevent new oil-based foreign matter from accumulating on the walls 34. This is shown in particular in
Moreover, because the edge 14 of the sheet 12 is circular, the orientation of the sheet 12 when it contacts the wall 34 will not matter, and in some cases the sheet 12 will be able to roll or slide along the wall 34, with the edge 14 rubbing the wall 34 as the sheet 12 moves along the wall 34. In addition, where the junction between the walls 34 is curved rather than angular, as shown in the case of the curved junction 36 in the artificial pool 32, the circular shape of the sheet 12 facilitates cleaning of such curved junctions.
The dimensions of cleaning devices according to aspects of the present invention should be such as to substantially prevent the cleaning devices from becoming trapped in the filter intakes of the artificial pools in which they are used. As such, for a circular cleaning device used in a typical swimming pool, a diameter of about 23.5 inches (about 60.7 centimeters) will typically be sufficient (see
Referring now to
A single individual may carry out all of the steps of the method 600, or different individuals may carry out different steps of the method 600. For example, a first individual may place the at least one sheet 60 in the artificial pool 32 at step 602, and a second, different individual may remove the at least one sheet 60 at step 606, rinse it at step 608 and replace it at step 610.
In other embodiments, cleaning devices according to aspects of the present invention may comprise sheets that are discontinuous (i.e. have internal portions of the sheet cut away), and which may have a variety of perimeter shapes and a variety of markings on the upper surface of the sheets (the side that is intended to face away from the surface of the water). These features enable cleaning devices according to an aspect of the present invention to have a decorative aspect. Particular examples of such decorative embodiments of cleaning devices according to aspects of the present invention are shown in
In
In
Each of the above-described embodiments may have suitable coloring and marking. The material of the sheets may be colored, that is, the fibers making up the sheets can be processed in a desired color, and indelible markings may be applied to the upper surface of the sheets such as by direct printing, or printed labels having appropriate coloring and markings may be applied to the upper surface of the sheets. For example, in the case of the cleaning device 2300 comprising a sheet 2302 shaped like a lily pad leaf, the material of the sheet 2302 may be green, or a green-colored, printed label may be affixed to the upper surface of the sheet 2302.
Any of the cleaning devices 900 to 2400 described above may be used with the method 600 described above, and other cleaning devices according to aspects of the present invention may also be used with this method.
One or more currently preferred embodiments have been described by way of example. It will be apparent to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as defined in the claims.
Claims
1. A cleaning device for artificial pools, comprising:
- a flexible sheet;
- formed from an oleophilic and hydrophobic material; and
- being buoyant in water.
2. The cleaning device of claim 1, wherein the sheet is a circular sheet.
3. The cleaning device of claim 2, wherein the sheet is formed from a plurality of individual layers secured in overlapping relation to one another.
4. The cleaning device of claim 3, wherein each layer comprises a fibrous mat containing fibers having a diameter between about 8 microns and about 18 microns.
5. The cleaning device of claim 4, wherein the fibers are fibers of high melt-flow polypropylene.
6. The cleaning device of claim 5, wherein the polypropylene has a specific gravity of 0.8.
7. The cleaning device of claim 6, wherein the polypropylene has a basis weight of 450 grams per square meter.
8. The cleaning device of claim 2, wherein the sheet has a diameter of about 11.5 inches.
9. The cleaning device of claim 2, wherein the sheet has a diameter of about 23.5 inches.
10. A method for cleaning an artificial pool, comprising:
- providing at least one flexible sheet formed from an oleophilic and hydrophobic material and being buoyant in water;
- placing the at least one sheet in the artificial pool; and
- allowing the at least one sheet to float on a surface of water in the artificial pool.
11. The method of claim 10, further comprising:
- removing the at least one sheet from the artificial pool;
- rinsing at least a downside surface of the at least one sheet with water; and
- replacing the at least one sheet in the artificial pool.
Type: Application
Filed: Jan 25, 2010
Publication Date: Jul 28, 2011
Inventor: James Barrie Ogilvie (Dundas)
Application Number: 12/693,289
International Classification: E04H 4/16 (20060101);