Enhanced micro bubble device, system and methods related thereto

Abstract

Systems and methods for enhanced filtration and separation of fluid from microorganisms, toxins and other particles in a more efficient manner is provided. The system may include a selectively removeable fitting or replaceable filter media and is suitable for use with liquid dispensing devices such as hydrotherapy jets, shower heads, liquid nozzles, and bathtub faucets.

Claims

1. A filtration system for use with a tub, basin or fluid reservoir, comprising: at least one tub, basin or fluid reservoir; at least one fitting selectively removeable from the at least one tub, basin or fluid reservoir and comprising a plurality of apertures; the plurality of apertures oriented to divert fluid passing from one side of the at least one fitting to the other side of the at least one fitting; the fitting is associated with an outlet, the outlet providing fluid to the at least one tub, basin or fluid reservoir; a pump connected to the filtration system and in fluid communication with the at least one fitting; the fitting further comprising a rim that is configured to be substantially flush when the fitting is positioned against a wall of the at least one tub, basin of fluid reservoir; a pressure vessel with a top end and a bottom end, the pressure vessel comprising a lower portion containing a fluid and an upper portion containing a gas, and further comprising an outlet at the bottom end of the pressure vessel; a microbubble device enclosed within the pressure vessel, such that the microbubble device remains fully submerged in fluid, the microbubble device comprising at least one gas supply line and at least one fluid inlet for supplying both gas and fluid to the microbubble device; a filter that is selectively received by the fitting; wherein the filter is comprised of a material that permits the flow of water or other fluid to pass therethrough while restricting the passage of bacteria, chlorine, toxins, and other microorganisms larger than about 10 micron; wherein the filter comprises an outer perimeter that substantially conforms to the outer perimeter of the fitting and is secured to the fitting by placing an outer edge of the filter between the rim of the fitting and the wall of the tub, basin or fluid reservoir; wherein microbubbles are generated within the pressure vessel by the microbubble device receiving gas from the at least one gas supply line, which maintains a volume of gas in the upper portion of the pressure vessel, and receiving a fluid from the at least one fluid inlet, and combining the fluid and the gas within the microbubble device; and wherein the combined fluid and gas exits the microbubble device through openings located in the bottom of the microbubble device.

2. The filtration system of claim 1, wherein the fitting is selectively positionable on either an inner or an outer surface of the tub, basin or fluid reservoir.

3. The filtration system of claim 1, wherein the fitting is comprised of a circular, elliptical, oval, square, rectangular, triangular, or non-symmetrical shape.

4. The filtration system of claim 1, wherein the fitting is configured to receive the filter on an inner surface or an outer surface of the fitting.

5. The filtration system of claim 1, wherein the pump is interconnected to fitting and configured to pump a liquid from a liquid reservoir through the fitting and into the tub, basin or fluid reservoir.

6. The filtration system of claim 5, further comprising an injector configured to inject a fluid additive into the liquid either before the liquid enters the fitting or into the liquid reservoir.

7. The filtration system of claim 6, wherein the fluid additive comprises at least one of a nutrient and a sanitizing agent.

8. The filtration system of claim 1, wherein the filter comprises an additional layer of material restricting the passage of bacteria, chlorine, toxins, and other microorganisms larger than about 1 micron.

9. The filtration system of claim 1, wherein the outer edge of the filter comprises an elastic material to secure the filter within the fitting.

10. The filtration system of claim 1, further comprising an attachment interconnected to the fitting and configured to dispense fluid from the filtration system.

11. The filtration system of claim 10, wherein the attachment is selected from the group consisting of a hair brush, an ear/nose/mouth outlet, a faucet outlet, a handheld wand, a basin, a massager, a handheld scrubber, a soaking vessel, a facial cleansing brush, a multi-outlet jet port, a vessel wall-mounting outlet, and a facial outlet device.

12. A filtration system, comprising: at least one tub, basin or fluid reservoir; at least one fitting selectively removeable from the at least one tub, basin or fluid reservoir and comprising a plurality of apertures; the plurality of apertures oriented to divert fluid passing from one side of the at least one fitting to the other side of the at least one fitting; the fitting is associated with an outlet, the outlet providing fluid to the at least one tub, basin or fluid reservoir; a pump connected to the filtration system and in fluid communication with the at least one fitting; the fitting further comprising a rim that is configured to be substantially flush when the fitting is positioned against a wall of the at least one tub, basin of fluid reservoir; a filter that is selectively received by the fitting; a fluid inlet for supplying at least one liquid to the system; a gas inlet comprising an injector located upstream from a pressure vessel; a self-priming pump for circulating liquid to the pressure vessel and throughout the system; the pressure vessel comprising an internal volume and configured to receive liquid via the at least one liquid from the fluid inlet with gas received from the gas inlet; a microbubble device contained within the pressure vessel and configured to generate microbubbles from the gas and the liquid received within the pressure vessel to form a microbubble-entrained liquid; a microbubble nozzle outlet, interconnected to the pressure vessel and configured to receive and dispense the microbubble-entrained liquid into the pressure vessel; wherein the filter is comprised of a material that permits the flow of water or other fluid to pass therethrough while restricting the passage of bacteria, chlorine, toxins, and other microorganisms larger than about 10 micron; wherein the pressure vessel is configured to maintain a volume of gas in an upper portion of the pressure vessel, and a volume of fluid in a lower portion of the pressure vessel; and wherein the microbubble device is configured to generate microbubbles by entraining gas received from the volume of gas in an upper portion of the pressure vessel with the volume of fluid in a lower portion of the pressure vessel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 illustrates components of a microbubble system according to embodiments of the present invention;

(2) FIG. 2 is a front elevation view of a microbubble device and pressure vessel according to embodiments of the present invention;

(3) FIG. 3 is a front elevation view of a microbubble device and pressure vessel according to another embodiment of the present invention;

(4) FIG. 4 is an illustration of a pressure vessel with a microbubble device according to embodiments of the present invention;

(5) FIG. 5 is an illustration of a nozzle for use with microbubble devices according to embodiments of the present invention;

(6) FIG. 6 is an illustration of the microbubble device of FIG. 4 removed from the pressure vessel;

(7) FIG. 7 is an illustration of the microbubble device of FIGS. 4 and 6 with a liquid thin film shroud, according to embodiments of the present invention;

(8) FIG. 8 is an illustration of a prior-art pressure vessel;

(9) FIG. 9A illustrates a microbubble device and pressure vessel according to another embodiment;

(10) FIG. 9B illustrates a microbubble device and pressure vessel according to yet another embodiment;

(11) FIG. 10A is a detailed sectional view of the stimulating nozzle of the system according to one embodiment;

(12) FIG. 10B is detailed sectional view of the microbubble device of the system according to one embodiment;

(13) FIG. 11 is an illustration of an attachment to the portable microbubble device according to embodiments of the present invention;

(14) FIG. 12 is an illustration of another attachment to the portable microbubble device according to embodiments of the present invention;

(15) FIG. 13 is an illustration of a faucet outlet to the portable microbubble device according to embodiments of the present invention;

(16) FIG. 14 is an illustration of a wand attachment to the portable microbubble device according to embodiments of the present invention;

(17) FIG. 15 is an illustration of a basin attachment to the portable microbubble device according to embodiments of the present invention;

(18) FIG. 16 is an illustration of a massage attachment to the portable microbubble device according to embodiments of the present invention;

(19) FIG. 17 is an illustration of a scrubber attachment to the portable microbubble device according to embodiments of the present invention;

(20) FIG. 18 is an illustration of a soaking vessel attachment to the portable microbubble device according to embodiments of the present invention;

(21) FIG. 19 is an illustration of a brush attachment to the portable microbubble device according to embodiments of the present invention;

(22) FIG. 20 is an illustration of a multi-outlet attachment to the portable microbubble device according to embodiments of the present invention;

(23) FIG. 21 is an illustration of a single-outlet attachment to the portable microbubble device according to embodiments of the present invention;

(24) FIG. 22 is an illustration of a facial outlet attachment to the portable microbubble device according to embodiments of the present invention;

(25) FIG. 23 is a perspective view of a fitting and filter that permits water or other fluid to pass therethrough according to an embodiment of the present disclosure; and

(26) FIG. 24 is a partially exploded view of FIG. 23.

DETAILED DESCRIPTION

(27) Unless defined otherwise, all technical and scientific terms used herein have the same meaning as is commonly understood by one of ordinary skill in the art. All patents, applications, published applications, and other publications to which reference is made herein are incorporated by reference in their entirety. In the event that there is a plurality of definitions for a term herein, the definition provided in the Brief Summary of the Invention prevails unless otherwise stated.

(28) Referring now to FIG. 1, a microbubble system 100 according to embodiments of the present invention is illustrated. The system 100 in this embodiment may be interconnected with a basin or bathtub T for circulating fluid therethrough. The system 100 preferably comprises a gas inlet 110, which preferably comprises an injector 120, which may be a jet pressure injector or equivalent injector. The gas inlet 110 is preferably upstream from the pressure vessel 400, such that gas fed into the system from the gas inlet 110 is fed to the microbubble device (not shown in FIG. 1) enclosed within the pressure vessel 400. Once gas and fluid are combined within the pressure vessel 400 as described in detail below, microbubble entrained fluid exits the pressure vessel outlet 160 at the bottom of the pressure vessel 400 and is fed to a stimulating nozzle 140 referred to in FIG. 10A. The stimulating nozzle 140 stimulates the fluid and feeds one or more outlets 170 to the bathtub T. Alternatively the fluid is fed to one or more other outlets or devices, such as those described in relation to FIGS. 11-22. In the embodiment of FIG. 1, the fluid within the tub is recirculated through the system by inlet 180, which is shown attached to the bathtub T. An optional domestic water supply may also be coupled to the system 100 downstream from the inlet 180 or otherwise to supply water or other fluid to the system 100, and in certain embodiments eliminates the need for a pump.

(29) Prior art microbubble systems often comprise a pump. The pump may be a centrifugal pump used for shallow water wells and comprises a liquid inlet, a gas inlet on the liquid inlet, a prime port (on a back side of the pump, not shown), a liquid outlet, and a drain port. Because air or other gas is injected to the pump on an inlet or suction side of the pump, cavitation may take place within the pump itself, creating unnecessary noise and an increased likelihood of shaft seal failure. These prior art pumps are also quite large, not self-priming, and requires four connections to a bathtub or plumbing. Water may be retained within the pump, which may lead to the growth of bacteria or molds. The pump may have a substantial electricity requirement of ten amps, and be mounted in a particular direction given the constraints on the bathtub or other plumbing fixture. These and other limitations of the pumps of the prior art are overcome by the microbubble devices and systems illustrated in FIGS. 1 and 4-7.

(30) As shown in FIG. 1, the system in a preferred embodiment comprises a pump 150 that overcomes the problems with the large, not self-priming centrifugal pumps used in prior art systems for improved circulation of the fluid contained in the system 100. This pump 150 may be substituted for a booster pump when combined with a domestic water supply. The supply of fluid is maintained by the pump 150 and the recirculation of fluid throughout the system 100, and provides a consistent stream of fluid to the pressure vessel 400, in part by the recirculation of fluid described above, and in part with the assistance of the pump 150. Likewise, the gas supply is consistent by use of the gas inlet 110, thereby maintaining the pressure and supply of gas to the pressure vessel 400. Further details regarding the supply and combining of gas and liquid to enhance microbubble production are provided below. The pressure vessel 400 may be secured to a stand 190 comprising a plurality of legs 195 to better assist the benefits of the system and desired recirculation of fluid described above. As shown, the system 100 may be placed much closer to a bathtub T and without requiring a footprint larger than the contours of the bathtub T, thereby permitting the system 100 to be contained within a structure surrounding a basin, or hidden behind a freestanding bathtub T.

(31) Referring now to FIG. 2, a pressure vessel 400 and microbubble device 200 according to embodiments of the present disclosure are shown. In operation, microbubbles of the gas are generated by the microbubble device 200 within the pressure vessel 400. Gas may be introduced into the pressure vessel 400 by supply line 210. This supply line 210 is in communication with a volume of gas Gv which is maintained in the upper portion of the pressure vessel 400. Fluid is supplied to the microbubble device 200 through inlet 230, and once combined with the gas from the supply line 210 may exit the microbubble device 200 through openings 240 preferably located in the bottom of the microbubble device 200. The microbubble-entrained liquid then flows to the microbubble outlet nozzle 270 and/or injector outlet, which dispenses the liquid according to a desired use.

(32) The microbubble device 200 may comprise drainage hole 260 for draining excess fluid. The microbubble device 200 is housed within the pressure vessel 400 such that it remains fully submerged in fluid below the fluid level L, such that the draining occurs into the volume of liquid Lv maintained within the pressure vessel 400. In a preferred embodiment, the volume of liquid Lv is about 90% by volume of the pressure vessel 400 volume, and the volume of gas Gv is about 10% by volume.

(33) In embodiments, one or more Venturi injectors may inject gases or liquid additives to the liquid prior to the liquid entering the pressure vessel 400. Venturi injectors may additionally be used in conjunction with the microbubble outlet nozzle to inject additional gases or liquids into the dispensed liquid. In embodiments that do not comprise a pump, the pressure vessel 400 may be interconnected directly to the liquid source.

(34) In varying embodiments, the system may be used with a traditional or stand-alone bathtub. However, other vessels suitable for use with systems of the present invention include, but are not limited to, showers, hot tubs, swimming and plunge pools, foot baths, sinks, troughs, wash basins, washing machines, dishwashers, irrigation ditches, wells, spray guns, and any other vessels used for bathing, hydrotherapy, cleaning or processing food, and the like.

(35) Referring now to FIG. 3, another embodiment of the microbubble device 300 is shown within a pressure vessel 400 similar to the one described above in relation to FIG. 2. Here, the fluid enters the microbubble device 300 through inlet 330, and microbubble entrained liquid may exit the pressure vessel 400 through outlet 370. The gas may be supplied through a supply tube 310. However, this microbubble device 300 further comprises a shroud 700 that facilitates enhanced microbubble production. The shroud 700 facilitates gas transfer into the liquid and promotes liquid thin film technology to create gas exchange, rather than merely gas injection. This occurs due to the shroud 700 diffusing the gas, continuously producing and breaking down the numerous bubbles to create a larger volume of microbubbles within the liquid. The pressure within the pressure vessel 400 causes the microbubbles to rise and pass around the surface of the shroud 700 once the liquid is sufficiently entrained. This in turn improves the gas/fluid boundary, and permits microbubbles produced by the microbubble device 300 to pass through the shroud 700 and into the pressure vessel 400.

(36) As shown in FIGS. 2-3, the microbubble device is preferably housed within a pressure vessel 400, although in certain embodiments may be provided separate from a pressure vessel, such as in a system contained within a basin or other vessel that contains the water or other liquid to be entrained with microbubbles. The microbubble device is a generally egg-shaped device, comprising one inlet of fluid and one inlet of gas, which may be mixed prior to entering the microbubble device. The fluid is entrained with the gas to create microbubbles, and exits the bottom of the microbubble device into the pressure vessel. During this process, the mixture separates such that about 90% of the volume is comprised of fluid, and about 10% is comprised of gas. The 10% of gas (by volume) generally rises to the top of the pressure vessel. The mixture then exits the vessel and passes through a stimulating nozzle for increased micro bubble performance.

(37) Thus, in embodiments described above, the outlet of the microbubble device is in communication with the interior of the pressure vessel, thereby permitting recirculation of microbubbles within the pressure vessel and delivery through one or more attachments or outlets. A separate nozzle may further stimulate the fluid to create an active concentration of microbubbles flowing to the outlet and into the basin or tub. This stimulating nozzle may be positioned before the outlet and after the pressure vessel.

(38) The system thereby provides a steady flow or fluid entrained with microbubbles without significant loss of pressure and avoiding clogging of the outlet or inlet. As the microbubble device inlet receives a mixture of liquid and large gas bubbles, and as the liquid is converted to all gas bubbles from the steady pressure within the microbubble device, the gas may be released from the device into the top of the pressure chamber tank and controlled at a consistent 40 psi with steady flow and no restrictions. This is beneficial compared to the prior art systems, which comprise pumps as described above operating at 60 psi or higher, with fluctuations, and associated restricted flow.

(39) Referring now to FIG. 4, a pressure vessel 400 with a microbubble device 600 according to another embodiment of the present invention is illustrated. The pressure vessel 400 may have a shape different from that shown in FIG. 4. In addition, the microbubble device 600 may or may not comprise a shroud. The microbubble device 600 in this embodiment is sized to a smaller pressure vessel 400, but still providing a mixture of gas from the supply line 410 and fluid from the inlet 430 to provide operation as described above.

(40) Referring now to FIG. 5, a stimulating nozzle 500 for use with microbubble devices according to embodiments of the present invention is illustrated. The nozzle 500 is adapted to be installed on a plumbing line and may serve as the microbubble stimulating nozzle 140 illustrated in FIG. 1. The nozzle 500 is used to mechanically stimulate the microbubbles, allowing a microbubble-entrained liquid to contain higher concentrations of oxygen, ozone, and nutrients. One or more Venturi injectors, with or without regulation devices, may be used in conjunction with the nozzle 500 to inject nutrients or sanitizing agents into the microbubble-entrained liquid. The nozzle 500 may receive the microbubble entrained fluid through inlet 530 and passed through the internal chamber within nozzle 500 (see description of FIG. 10A) and ultimately exit the nozzle 500 through outlet 570.

(41) Referring now to FIG. 6, a microbubble device 600 according to embodiments of the present invention is illustrated. In operation, the microbubble device 600 may be interconnected to or housed within a pressure vessel 400, as illustrated in FIG. 4, or may be installed and submerged directly into a vessel of fluid. The microbubble device 600 may comprise openings 650 for releasing microbubble entrained fluid into the pressure vessel (not shown) or other vessel of fluid.

(42) Referring now to FIG. 7, the microbubble device 600 of FIGS. 4 and 6 is provided with a liquid thin film (LTF) shroud 700 as described above in relation to FIG. 3. In addition to the functions and benefits described above, the LTF shroud 700 protects inner functional components and improves the aesthetics of the microbubble device 600. It is to be understood that the microbubble device 600 of FIG. 6 may be provided with or without the LTF shroud 700.

(43) Referring now to FIG. 8, a pressure vessel 800 as known and described in the prior art, and suitable for use with microbubble devices of the prior art, is illustrated. The pressure vessel 800 of FIG. 8 is much larger than the pressure vessel 400 of the present invention as illustrated in FIG. 4 and described herein.

(44) Referring now to FIGS. 9A-9B, variations of the microbubble device and pressure vessel are shown. In FIG. 9A, the device comprises a shroud 700 as described above, and is in a generally translucent pressure vessel having a rectangular shape. In FIG. 9B, the pressure vessel 990 is non-translucent, and may be comprised of two portions (a first portion and a second portion), which may be joined together for ease of assembly. The dimensions of the pressure vessel according to preferred embodiments are about 4 by 5.75 (in inches) to about 7 by 8.25 (in inches). The microbubble device is preferably 3.25 by 3.75 (in inches) to about 4 by 5.25 when comprising the shroud (in inches). The microbubble device and pressure vessel are much smaller and able to be positioned in a smaller area than prior art microbubble generating equipment.

(45) Referring to FIGS. 10A and 10B, sectional views are shown through the stimulating nozzle and microbubble device, respectively, according to preferred embodiments of the present disclosure. In FIG. 10A, fluid is allowed to enter the stimulating nozzle through aperture 1030 and exit through nozzle outlet 1010. Nozzle outlet 1010 may comprise two or more pathways 1012 for stimulating the water exiting the stimulating nozzle. In FIG. 10B, the microbubble device is preferably egg-shaped and comprising an inlet 1060 for receiving fluid into the internal chamber of the microbubble device. Tubing 1025 may extend from the gaseous volume portion of the pressure vessel and deliver gas to the microbubble device as described above. The device may further comprise a small opening 1040 for draining excess fluid.

(46) The system 100 comprises at least one injector, which receives fluid and tapers down to create an orifice, and further comprises a gas inlet for receiving ambient or compressed gas. The microbubble device then widens and creates a vacuum for gas or liquid to be drawn into the fluid flowing through the microbubble device, which provides consistent water flow and gas flow. These components of the system are all located on the outlet side of the pump to reduce cavitation and potential system failure, as well as address noise and inconsistent gas flow or pressure.

(47) In use, the system is further designed to permit pressurized water from the microbubble device and the pressure vessel to enter an injector inlet, which causes the pressurized water to become constricted toward the injection chamber. This in turn changes the pressurized water into a high-velocity jet stream, which also serves to increase the velocity through the injection chamber and decrease the absolute pressure, creating a vacuum. This process further permits the addition of an additive material, preferably drawn through the suction port and entrained into the water stream, during the delivery of the pressurized fluid. As the jet stream is diffused toward the injector outlet, its velocity is reduced and it is reconverted into lower pressure energy. Further details regarding the method of use of the system is described below.

(48) Referring now to FIGS. 11-22, various outlets and attachments that may be suitable for particular applications of the present invention are illustrated. FIG. 11 illustrates a hair brush 1100 comprising multiple ports through which oxygenated or ozonated water may be ejected, as may be suitable, for example, for use in pet grooming or human hair treatment.

(49) FIG. 12 illustrates an ear/nose/mouth outlet 1200 that may dispense oxygenated or ozonated water, whereby the oxygenated or ozonated water may provide improved cleaning or therapeutic effects due to the tendency of oxygen or ozone bubbles to cling to the surfaces of a user's ear, nose, mouth, etc. for a deeper more thorough cleansing.

(50) FIG. 13 illustrates a faucet outlet 1300, which may be suitable, for example, for dispensing microbubble-entrained water from a household faucet. It should be noted that the system 100 includes components that could easily be placed underneath a sink or similar sized basin.

(51) FIG. 14 illustrates a handheld wand 1400 comprising multiple ports for ejecting oxygenated or ozonated fluid, and which may further provide microbubble-entrained water as, for example, required for washing or treating the hair or skin of a user.

(52) FIG. 15 illustrates a basin 1500 suitable for containing and holding oxygenated water during hair or skin treatments and can thus function as, by way of non-limiting example, a hair washing basin, a facial washing basin, a pedicure soak basin, or a shower cap.

(53) FIG. 16 illustrates a trigger point soft tissue muscle massager 1600, which comprises multiple stationary or moveable brushes having outlets for ejecting oxygenated water. These outlets/brushes may either dispense the oxygenated water for therapeutic purposes or utilize the oxygenated water as a motive pressure source for driving mechanical massaging elements.

(54) FIG. 17 illustrates a handheld scrubber 1700 powered by injected oxygenated water, as may be suitable, for example, for mounting to a kitchen sink for cleaning fruits and vegetables, or for cleaning the skin of a user, such as during a pedicure.

(55) FIG. 18 illustrates a soaking vessel 1800 that may contain oxygen- or sanitizing agent-injected water and may be utilized by a user to, for example, clean, disinfect, or treat skin pores and hair follicles.

(56) FIG. 19 illustrates a facial cleansing brush 1900 that may dispense oxygen- or sanitizing agent-injected water and may be utilized by a user to, for example, clean, disinfect, or treat pores of the skin on the user's face.

(57) FIG. 20 illustrates a multi-outlet jet port 2000 that may be mounted, for example, on a wall of a vessel or in conjunction with a carpet cleaning device to dispense microbubble-entrained or sanitizing agent-injected water.

(58) FIG. 21 illustrates a standard port outlet 2100 for mounting in the wall of a vessel, the standard port outlet 2100 optionally comprising a hose or other handheld attachments.

(59) FIG. 22 illustrates a facial outlet device 2200, comprising an inlet 2210, a sealing gasket 2220, and an outlet 2230, as may be suitable, for example, for treating target areas such as liver spots on a user's face, scalp, etc. with oxygenated water.

(60) Referring now to FIGS. 23 and 24, a fitting 3100 according to one embodiment of the present disclosure is shown. The fitting 3100 may be attached to an outlet in the side of a tub, basin or other fluid reservoir, for example. The fitting 3100 may comprise a plurality of apertures 3110 for diverting water passing therethrough, which may be arranged in a variety of patterns without departing from the novel aspects of the present disclosure. The fitting 3100 is preferably removable from the tub, basin or fluid reservoir to periodically clean the fitting 3100.

(61) Although not shown in FIG. 24, the fitting 3100 may be associated with an outlet fed by a pump. The pump preferably supplies a water or other fluid to the outlet and then through the fitting 3100. The pump may be a centrifugal pump, preferably of the type used for shallow water reservoirs. The pump may also comprise a liquid outlet and a drain port, but even in such configurations, water may be retained within the pump, which may lead to the growth of bacteria or molds. These molds and bacteria may be introduced into the tub, basin of fluid reservoir as water passes through the pump to the outlet and the fitting.

(62) The fitting 3100 may have a rim or lip 3120, which in one embodiment may be placed substantially flush against a wall of a tub, basin of fluid reservoir. Screws or similar devices may be used to attach fitting to the wall of the fluid reservoir. The fitting 3100 may be circular or shaped in another fashion.

(63) A filter 3200 is preferably sized to be placed adjacent to, and in some embodiments over the fitting 3100, as will be described in greater detail below. The filter 3200 is comprised of a material that permits the flow of water or other fluid to pass therethrough, but also restricts the passage of bacteria, chlorine, toxins, and other microorganisms of a certain particle size. In embodiments, the material is comprised of a cloth material. In other embodiments, the material is comprised of a composite material suitable for filtration of particle sizes specified herein. In one embodiment, the filter 3200 permits filtering of bacteria and other microorganisms larger than about 10 micron. In alternate embodiments, the filter 3200 may be comprised of a denser material to permit filtration of even smaller microorganisms, including those smaller than about 1 micron.

(64) The filter 3200 may be shaped to have an outer perimeter that substantially conforms to the outer circumference of the fitting 3100 and may further comprise an outer edge 3300 that conforms to the lip or rim of the fitting 3100 described above. The outer edge 3300 comprises elastic or similar material to ensure a snug fit against the fitting 3100. In alternate embodiments, the outer edge of the filter 3200 may be placed between the lip or rim of the fitting 3100 and the wall of the fluid reservoir, thereby securing the filter 3200 in place. In either of these embodiments, the filter 3200 is secured to the fitting and, thus avoids displacement by water passing through the fitting 3100 and the filter 3200.

(65) In one embodiment, the filter 3200 is sized to be placed adjacent to the fitting 3100 on an outer surface (tub-facing side). In other embodiments, the filter may be placed against an inner surface of the fitting 3100. In this configuration, screws or other devices may pass through the filter 3200 and further secure the filter 3200 in place on the inside of fitting 3100. In alternate embodiments, the screws are placed to avoid penetrating the filter 3200.

(66) In operation, the filter 3200 is placed over the fitting and fastened directly or with material along the outer edge 3300 or the filter 3200 so that it fits snugly around the lip or rim of the fitting 3100. The fitting 3100 may be removed from the tub and the filter 3200 replaced from time to time without the use of specialized equipment or difficulty accessing the filter 3200. Different types of filter 3200 may be used with a single fitting, depending on the nature of filtration desired.

(67) The invention illustratively disclosed herein suitably may be practiced in the absence of any element which is not specifically disclosed herein. It is apparent to those skilled in the art, however, that many changes, variations, modifications, other uses, and applications of the invention are possible, and also changes, variations, modifications, other uses, and applications which do not depart from the spirit and scope of the invention are deemed to be covered by the invention.

(68) The foregoing discussion of the invention has been presented for purposes of illustration and description. The foregoing is not intended to limit the invention to the form or forms disclosed herein. In the foregoing Detailed Description of the Invention, for example, various features of the invention are grouped together in one or more embodiments for the purpose of streamlining the disclosure. The features of the embodiments of the invention may be combined in alternate embodiments other than those discussed above. This method of disclosure is not to be interpreted as reflecting an intention that the invention requires more features than are expressly recited. Rather, inventive aspects lie in less than all features of a single foregoing disclosed embodiment.

(69) Moreover, though the description of the invention has included description of one or more embodiments and certain variations and modifications, other variations, combinations, and modifications are within the scope of the invention, e.g. as may be within the skill and knowledge of those in the art, after understanding the present disclosure. It is intended to obtain rights which include alternative embodiments to the extent permitted, including alternate, interchangeable, and/or equivalent structures, functions, ranges, or steps to those described, whether or not such alternate, interchangeable, and/or equivalent structures, functions, ranges, or steps are disclosed herein, and without intending to publicly dedicate any patentable subject matter.