Abstract: A soft, flexible, solar pool heater for floating on water generally comprises independently inflatable outer ring and central portion. When chamber and cavity are inflated, the cavity is with the top and bottom planes of the ring. The ring can be inflated with water for holding the heater in a pool in winds. Holes through the central portion permit egress of air from under the central portion when the heater is placed on water. Valves for chamber and cavity are located near one edge such that the heater may be deflated by rolling from an edge opposite the valves. Magnets on the ring condition water and attach to similar floating heaters to form rafts.

Abstract: The concentrating heat receiver (10) is provided with a casing (41) which has an opening portion (15) into which sunrays are made incident, a heat receiving portion (42) which is accommodated inside the casing (41) so that a working fluid flows therethrough and receive heat from sunrays made incident from the opening portion, thereby raising the temperature of the working fluid, and hanging members (61, 62) in which the upper end sides thereof are coupled to an upper angle (14) and the other end sides thereof are loosely inserted into through holes (44a, 44b) of the casing (41), thereby supporting in a hanging manner the heat receiving portion (42) inside the casing (41).

Abstract: The invention relates to a solar energy absorber unit for a solar energy device, and methods of producing the same. The unit includes a collector plate having a front surface adapted to absorb solar energy and a rear surface. A rear panel has an inner surface attached to areas of the rear surface of the collector plate via a fluid-tight bond but leaving a fluid-conveying channel between the areas of the rear surface of the plate where the panel is attached. The collector plate and preferably the rear panel are each made of a core layer of an aluminum alloy provided with a cladding layer formed on a side of the core layer that confronts the fluid-conveying channel, the cladding layer being made of aluminum or an aluminum alloy having a total content of alloying elements and impurities, if any, of no more than 0.5 wt. %.

Abstract: A solar concentrator assembly can include mirror assemblies that are connected to pivotable frames with locating connections. The locating connections can be in the form of cam devices or tool-less connections formed by snap fitting devices as well as tool-less cam devices.

Abstract: Space frames incorporating flanged chords and struts with receiving spaces configured to receive at least portions of the chord flanges without the need for connector nodes that are separate from the chords. For example, a space frame can include a strut, a first chord, and a second chord. The first chord can have a first flange and a second flange fixed relative to the first flange. The second chord can have a third flange. The strut can include receiving spaces configured to receive portions of the first flange and the third flange. The strut can be secured relative to the first and second chords and the space frame can support a reflective surface configured to focus electromagnetic radiation.

Abstract: A solar concentrator assembly can include edge solar receiver assemblies that are connected to pivotable frames with locating connections. The locating connections can be in the form of cam devices or tool-less connections formed by snap fitting devices as well as tool-less cam devices.

Abstract: A nasal nebulizer with a main canister for receiving fluid and an insert with a fluid channel includes a contiguous pressurized air supply source. The fluid channel may be a tapered tube overlapping an air exit port in the canister. The fluid channel may also comprise a common bell housing surrounding the air exit port above a base of the insert, which rests within the canister. The insert may include an extension projecting out to the canister and a vertical groove may extend down the fluid channel to a hole in the extension, which upon use helps create a vacuum that pulls in deflected fluid. The main canister includes a convex top surface around the periphery of an opening for a reservoir that receives fluids. The top surface extends downwardly to a generally rectangular opening that connects to the pressurized air supply source.

Abstract: A medical device tube having opposing support ears for improved coupling of an inner cannula to an outer cannula. The medical device tube comprises an outer cannula having opposing support ears on an outer cannula connector flange attached to a proximal end of the outer cannula. The opposing support ears maintain locking ears of the inner cannula in substantially one position. The opposing support ears substantially prevent the locking ears in contact with the outer cannula connector flange from slipping therefrom by, e.g., rotation, axial displacement, torsional shear, etc.

Abstract: Breathing apparatus includes a hood enclosing the patient's head and having a gas inlet and outlet located on the hood in the region of the patient's nose and mouth. Inlet tubing connects the gas inlet on the hood with an outlet of a gas supply unit; outlet tubing connects the gas outlet on the hood with an inlet of the gas supply unit. A pump in the gas supply unit draws gas extracted from the outlet tubing through a scrubber to remove carbon dioxide from gas extracted from the enclosure. A mixer valve mixes gas from the scrubber with fresh gas from an oxygen and helium cylinder for supply back to the inlet tubing.

Abstract: The invention is an apparatus that blocks out light and improves breathing. The apparatus includes a sleep mask with an integral nasal dilation system. The nasal dilation system includes a nasal element mounted with on the nose section of the mask, where the nasal element in one version has a channel through which a band can move substantially orthogonal to the wearer's nose. Sidewalls center the band, and inward folded cuffs retain the band. The band encircles the wearer's head between the mask straps. It is threaded through the slideway and can slide therein equalizing side-to-side forces. The band is elastic and when stretched it generates an opposing force. Pressure is exerted on the nose by using the band in a stretched state. The extended band creates pressure on the slideway, which causes the nose section to press against the nostrils causing them to distend, which in turn dilates the nasal passages, and breathing is improved.

Abstract: An upgraded inhalator for powder preparations comprises a main body having an inhalation channel, an external opening accessible by a user, and a tank adapted to receive a dose of powder preparation. The tank is opened to establish communication with the inhalation channel. At least one protuberance protrudes or extends towards the inside of the inhalation channel. Each protuberance defines substantially concave impact surface and is arranged on the opposite side to the external opening. The impact surface of each protuberance intercepts the powder preparation during its crossing of the inhalation channel towards the external opening.

Abstract: The present invention relates to a device for controlling the pressure of a gas in a circuit by means of the generation of bubbles through a liquid, this effect being is used to produce a continuous positive airway pressure (CPAP). The invention comprises a container containing a liquid; a bubble tube with one end located outside the liquid connected to a device connected to a patient's respiratory tract and the other end located within the liquid; and means for adjusting the level of liquid in the container. The device may also comprise, in addition to the aforesaid, means to stabilize the liquid level inside the container, humidifying and heating means located inside the container, and a gas-recycling system that conveys all or a portion of the gases generated in the container towards the humidifying and heating device.

Abstract: A method and apparatus for treating sleep disordered breathing. An arousal index is determined for use in an outer loop of a control algorithm, the arousal index being a measure of the frequency of sleep arousals. The respiratory airflow signal in an inner loop of the control algorithm is monitored to detect an airway obstruction. If the arousal index is high, then the sensitivity of obstruction detection and/or the aggressiveness of the treatment is increased, and if the arousal index is low, then the sensitivity of the obstruction detection and/or the aggressiveness of the treatment is decreased.

Abstract: A system and method for an adaptable oxygen regulator with an electronic control device is disclosed. In one embodiment, an oxygen regulator system includes an electronic control device which includes a non-volatile memory for storing a first reference point. The electronic control device also includes a pressure sensor configured for generating pressure data of the pressurized aircraft cabin. The electronic control device further includes a logical control unit for generating a control signal by processing the first reference point and the pressure data. Further, the electronic control unit includes a rotary actuator for generating a rotary displacement based on the control signal. Moreover, the oxygen regulator system includes a demand dilution oxygen regulator coupled to the electronic control unit and configured to control the supply of oxygen and the flow of dilution air from the pressurized aircraft cabin based on the control signal.

Abstract: In one aspect, a respiration system includes a regulator including an inlet for connection to a source of pressurized gas (which includes oxygen) and an outlet for delivery of the gas to the user, and a respiration facepiece for use in connection with the regulator. The facepiece includes an interface to which the regulator is removably attachable, at least one seal system to form a sealing engagement with the face of a user to encompass the nose and mouth of a wearer, an inhalation port in fluid connection with the regulator interface and in fluid connection with the interior of the facepiece, at least one inhalation check valve in fluid connection between the inhalation port and the interior of the facepiece; an exhalation port in fluid connection with the facepiece; an exhalation check valve in fluid connection with the exhalation port; and an ambient port separate from the inhalation port and from the exhalation port.

Abstract: A filtering face-piece respirator 10 that comprises a mask body 12 and a harness 14 that is joined to the mask body 12. The mask body 12 includes a filter layer 30 and a nonwoven fibrous cover web 16. The fibrous cover web 16 is partially occluded and is generally parallel to and spaced from the filter layer 30 such that air passing through the cover web 16 can move freely between the cover web 16 and the filter layer 30 so that it can enter the filter layer 30 at essentially any available point over the filter layer surface 32. The inventive respirator is beneficial in that it can provide very good splash fluid and airborne contaminant protection while also exhibiting an extraordinary low pressure drop across the mask body during breathing.

Abstract: There is provided a splash resistant facemask having two outer splash layers adjacent each other on a side away from a wearer, a filter layer and an inside layer. None of the layers contains a repellent treatment. The facemask can pass a fluid splash resistance test, e.g. ASTM F-1862-05, wherein fluid is directed at the mask at a pressure of 160 mmHg.

Abstract: A nasal cannula is provided that employs a left tube and a right tube wherein at least a portion thereof is made of a resilient and compliant material that elongates in response to a tensile load applied thereto. The contemplated tubing material will continue to supply a predetermined amount of oxygen to the patient if elongated, i.e., the elongated tube will not substantially constrict air flow.

Abstract: A tongue advancement device according to various embodiments can include at least one first magnet provided in a mouthpiece and a tongue implantation device. The at least one first magnet comprises a substantially flat surface that aligns with a peripheral edge of the mouthpiece, such that the at least one first magnet does not extend from the mouthpiece. The tongue implantation device, such as a tongue piercing, includes a second magnet that magnetically interacts with the at least one first magnet to retain the tongue of the user in a forward position when the mouthpiece is worn. The device can also include a tongue cover consisting of a flexible tubular body having an opened end, a closed end and a magnet attached to the closed end. The tongue cover may be configured as a tongue sleeve or a tongue gripper based upon the principals of the Chinese finger trap.

Abstract: A breast crease comforter decreases pain and promotes healing during and after radiation therapy to the breast. The skin crease between the breast and the torso is typically exposed to daily friction, sheer, and moisture. When the breast is also compromised by radiation therapy, these various insults may combine to cause skin breakdown and excoriation, including resultant pain. The breast crease comforter intervenes between the underside of the breast and the torso to protect and pad this sensitive crease area when compromised by radiation therapy. The breast crease comforter may also be used to treat other conditions besides vulnerable skin resulting from radiation therapy to the breast or torso. The breast crease comforter may also be combined with the bottom of a conventional bra.

Abstract: Electronic Rechargeable Smoking Unit is a fully self-contained device for smoking tobacco. The Unit uses an electrically heated element in addition to oxygen that is induced by inhalation on the Unit to combust the tobacco that is placed within the chamber. No oxygen can be induced without the user inhaling through the mouthpiece. Therefore, the tobacco only burns whilst the user is inhaling resulting in all the smoke from the tobacco passing through the lungs of the user. There is a replaceable/reusable filter placed between the burn chamber and the mouthpiece. The Unit also comes with a hose that can be attached to the mouthpiece as an extension tube. The mouthpiece of the hose contains a switch to control the circuit.

Abstract: Cigar Aerator—cylinder with three prongs at end to punch and aerate cigar.

Abstract: The invention provides an aerosol generating material (8) for a smoking article (5), comprising particulate porous material impregnated with a diluent (3), wherein said particulate porous material has a BET specific surface area of at least 1200 m2/g. The invention also provides an aerosol generating material (8) for a smoking article (5), comprising particulate calcium carbonate (1) carrying and/or impregnated with a diluent (3).

Abstract: There is provided a particle-filter comprising at least one hydrogel formed in aqueous solution at a temperature below 0° C. The filter can arrest particulates of smoke by physisorption on the solid surface of the gel or by chemisorption if the gel is suitably functionalized. The effectiveness of filter in arresting the solid particles and the pressure drop can be controlled by varying the porosity and the pore size distribution of the filter which in turn can be modulated by varying the monomer to water and monomer to cross-linker ratio in the pre-polymer solution. The filter is able to reduce the particle content of the smoke. There is further provided a cigarette comprising at least one particle-filter according as well as a method for the filtration of smoke.

Abstract: The various embodiments herein provide an electrospun fiber mat filter comprising a cigarette filter containing macrocycle for removing toxic compounds from a toxic material, wherein the toxic material comprises liquid, gas, and cigarette smoke and a method of synthesizing the same. The electrospun fiber mat cigarette filter comprises a biological, organic or synthetic macrocycle, plurality of additives, a solvent and an acceptable polymeric carrier. The biological macromolecules are engineered polyhemoglobin and/or chlorophyll. The biological, organic, or synthetic macrocycle are electrospun with the acceptable polymeric carrier in presence of an abruptly asymmetric electric field to form an electrospun fiber mat. The electrospun fiber mat is made up of networks of plurality of nanofibers.

Abstract: A preformed artificial nail assembly comprising a pair of artificial nails sized to correspond to at least a portion of said natural nail, and an application tab assembly extending between the pair of artificial nails. The application tab assembly includes a body portion and a neck portion adjacent each said artificial nail, said neck portion being disposed between the body portion and the distal end of the artificial nail. The application tab assembly may include an area of weakness that allows the assembly to be separated into two separate tabs, one adjacent each of the artificial nails of the pair. The user my utilize the application tab assembly as a single unit to place the nails, or separate the assembly into to separate tabs to allow the user to place the nails utilizing separate tabs.

Abstract: A glove for use in the bath or shower can include a palm front section, a palm back section, five separate finger sections, a wrist section defining an opening for receiving a user's hand, and a multi-layered ruffled inset attached to at least one section of the glove. The ruffled inset can be attached to the palm front section of the glove by stitching, adhesive, and/or hook and loop fasteners. The glove can be made of elastic material, and the ruffled inset can be an exfoliating sponge.

Abstract: There is provided an adhesive composition including a non-allergenic latex for attaching a cosmetic material or device. There is also provided a method for the use of said adhesive composition to attach a cosmetic material or device, including a false eyelash to a person's eyelid. The composition can be provided in a kit including one or more false eyelashes and a sealed container including the adhesive composition.

Abstract: We, two women inventors, have designed this Eyelash Permanent Extender, our devotions and contributions are for to enhance, improve and provide the innovative make-up goods for women; this device of new invention, in contrary with the gluing traditional eyelash piece on eyelid skin, will eliminate the hectic, time consuming and difficult tasks of gluing a pair of eyelash pieces on women eyelids; this device will also avoid the uncomfortable feeling of eyelids skin from their reactions to the adhesive agents, which uses to glue the eyelash pieces; and at last, in a sense of economical, this device will save money over the traditional way of beautifying our eyelash.

Abstract: Various embodiments directed to modifying and enhancing visual perception are disclosed. One embodiment is directed to a camera which includes a lens system for capturing images and a lighting system providing key light above the lens system and providing fill light below the lens system. A processor controls one or more operations of the camera, including automatically enhancing the captured images and presenting the enhanced images on a display. The system and method for modifying visual perception may also be directed to a video camera mirror system, a seating system, a cosmetic package, a lipstick packaging, a polarized mirror, an illuminated cosmetic brush, a personal portrait photography management system and an illumination system for modifying visual perception.

Abstract: A toothbrush combined with a toothpaste dispenser with a wall mounted holder. The present invention comprises of a twist knob that is able to push a piston up a toothpaste compartment. The piston creates pressure inside the toothpaste compartment and causes the toothpaste to travel up a main channel. The main channel branches into a plurality of smaller tubes. Each tube has a respective rubber tube dispenser that protrudes and extends from the brush head. The rubber tube dispensers allow the toothpaste to be dispensed on top of the bristles. The toothbrush additionally comprises of a mouthwash strip roll dispensing mechanism positioned in the knob. The present invention additionally comprises of audio and visual indicators to provide users with visual or hearing impairments with a signal notification of toothpaste depletion.

Abstract: A cosmetic applicator comprising: a sheath that extends along a longitudinal axis to a free end; a handle that is connected to the sheath; a central stem that extends along the longitudinal axis to a free end, the central stem and the sheath being slidably mounted relative to each other; and an applicator head that is situated at the free end of the central stem, the sheath forming, at its free end, a wiper member that is adapted to wipe the applicator head. The sheath further presents, at its free end, at least one recess that passes radially therethrough and that opens out axially. The length of the stem is adapted so that the applicator head is capable of facing a recess portion on being wiped by the wiper member.

Abstract: The spray assembly for a droplet spray teeth cleaning system includes a guidance member (40, 56, 80, 86) at the end thereof. The spray assembly includes a nozzle (24) through which a spray of liquid is directed to the teeth for cleaning. The guidance member is configured and mounted relative to the nozzle to provide a selected standoff distance between the nozzle and the teeth and includes a portion which is configured to fit in the interproximal space between adjacent teeth and gums, or against the frontal portions of the teeth, so that the user knows the location of the spray relative to the teeth.

Abstract: Embodiments of the current invention describe a megasonic processing tool. A substrate support is positioned within a housing and is configured to support a substrate. A first liquid container is moveably coupled to the housing within the testing chamber to be positioned on a first location on the substrate and configured to hold a first body of liquid adjacent to the first location on the substrate. A second liquid container is moveably coupled to the housing within the testing chamber to be positioned on a second location on the substrate and configured to hold a second body of liquid adjacent to the second location on the substrate. The second body of liquid is isolated from the first body of liquid. At least one megasonic transducer is coupled to the housing and configured to perform at least one megasonic process on the first body of liquid and the second body of liquid.

Abstract: The invention is a method of stripping one or more additional coats covering a barrier primer coat that covers a surface. The barrier coat contains a catalyst, such as manganese dioxide and, or, manganese carbonate, for the decomposition of hydrogen peroxide. The top coat of the covered surface is contacted with the stripping agent at decomposition reaction conditions.

Abstract: This invention provides processes for inhibiting the formation of copper oxides on substantially oxide-free copper surfaces by contacting a substantially oxide-free copper surface with a bifunctional ligand that contains both a metal-coordinating group and a tertiary amine group in an aqueous solution of pH about 2 to about 5.5. A thin layer of the bifunctional ligand formed by coordination of the dialkylaminoacetonitrile to the copper surface can be removed by heating under vacuum to regenerate a substantially oxide-free copper surface.

Abstract: A cleaning method according to embodiments of the present invention is a cleaning method of cleaning residues from a semiconductor substrate by rotating a roll brush, the method having cleaning residues from the semiconductor substrate while pressing the roll brush against the semiconductor substrate with a first pressure of 7.35 kPa or lower, and cleaning residues from the semiconductor substrate while pressing the roll brush against the semiconductor substrate with a second pressure higher than 7.35 kPa.

Abstract: A portable machine and process is described for covering all sides of an elongated object with a liquid without the use of brushes. The machine is particularly useful with manufactured building products such as a fence picket, trim, molding, or any other type of board. The machine generally has four stations, an entry station that drives the object down a track, a liquid application station where the object is covered by liquid that is poured over the object, a blower station where the fluid is spread evenly over the object and excess fluid is blown off, and an exit station that continues to pull the object down the track and directs the object as the object leaves the exit station. Finally, the object may enter a releasably attached drop track.

Abstract: A refresh washing machine including a plurality of spray nozzles to spray air into a clothes receiving compartment of a cabinet, a plurality of opening and closing valves to open and close the spray nozzles, and a controller to open at least one of the opening and closing valves and close the other opening and closing valves so that air is sequentially sprayed from the spray nozzles.

Abstract: A method of manufacturing cleaning solvents is provided. The method includes selecting a small plurality of test solvents from a large plurality of perspective solvents. The equilibrium composition of a multi-component solution is preferably described by the Hansen solubility model. A small plurality of test solvents is applied to solute samples and the degree of dissolution or swelling recorded. Based on the degree of dissolution or swelling, at least one solvent is selected from the large plurality of perspective solvents based on the Hansen parameters.

Abstract: A warewasher for washing wares includes a housing defining an internal space with at least one spray zone for washing wares, A liquid delivery system provides a spray of liquid within the spray zone. A tank includes an inlet that is connected to a hot water source for filling the tank with hot water. The liquid delivery system receives water from the tank. An exhaust vents heated air from the housing. A final rinse system is connected to a cold water source. A heat recovery system is located between the final rinse system and the cold water source. The heat recovery system transfers heat from the exhaust air to the cold water provided from the cold water source. A valve associated with the hot water source selectively supplements the water exiting the heat recovery system with hot water from the hot water source.

Abstract: The present invention is to provide a cleaning method to a process for fabricating a semiconductor. The method comprises steps as follows: A semiconductor substrate is first provided. An atomized spray are then continually supplied for a first time interval to clean the semiconductor substrate; and a water film is formed on the surface of the semiconductor substrate at or before a start point of the first time interval to buffer the impact imposed by the atomized spray, wherein the water film is preserved for a second time interval at least partially overlaps the first time interval.

Abstract: Disclosed are a liquid processing method, a liquid processing apparatus, and a recording medium that can prevent convex portions of a target substrate from collapsing when a rinsing liquid is dried. A base surface of a target substrate is hydrophilized and the surfaces of convex portions are water-repellentized by surface-processing the target substrate which includes a main body, a plurality of convex portions protruding from the main body, and a base surface formed between the convex portions on the substrate main body. Next, a rinsing liquid is supplied to the target substrate which has been subjected to the surface processing. Thereafter, the rinsing liquid is removed from the target substrate.

Abstract: Disclosed is a liquid processing apparatus that processes a substrate with a processing liquid. The processing apparatus includes: a substrate holder configured to hold the substrate; a processing liquid supply unit configured to supply the processing liquid to the substrate held by the substrate holder; a rinsing liquid supply unit configured to supply a rinsing liquid to the substrate; and a light emitting element configured to emit light of a wavelength range, which is absorbed only by the substrate, and irradiate the emitted light to the substrate.

Abstract: Disclosed is a liquid treatment apparatus including a nozzle positioned below the substrate retained by a substrate retaining unit. The nozzle is capable of ejecting two fluids of a mixture of a liquid and a gas. The nozzle includes a plurality of liquid-ejecting passages for ejecting a liquid and a plurality of gas-ejecting passages for ejecting a gas, and also includes a plurality of liquid-ejecting ports each corresponding to one of the liquid-ejecting passages. The liquid-ejecting ports are arrayed on a horizontal line extending inwardly from a position below a peripheral portion of the substrate. The liquid-ejecting ports are configured to eject the liquid towards the lower surface of the substrate in an ejecting direction, and the ejecting direction is inclined at an inclination angle in a rotating direction of the substrate rotated by rotational driving unit with respect to a plane including the lower surface of the substrate.

Abstract: Mixtures containing concentrated sulfuric acid used for stripping photoresist from semiconductor wafer, such as SOM and SPM mixtures, are more quickly removed from a wafer surface using another liquid also containing high concentration of sulfuric acid, with the second liquid furthermore containing controlled small amounts of fluoride ion. The second liquid renders the wafer surface hydrophobic, which permits easy removal of the sulfuric acid therefrom by spinning and/or rinsing.

Abstract: Disclosed are a liquid processing apparatus and a liquid processing method that can improve substitutability of an atmosphere in a processing chamber to prevent an atmosphere with, for example, a chemical liquid which is scattered during liquid-processing of a substrate from remaining in the processing chamber. In the liquid processing apparatus, an arm standby unit is installed adjacent to a processing chamber and an arm retreating from the processing chamber stands by in the arm standby unit. An elevating/descending cup peripheral case having a cylindrical shape is disposed around a cup in the processing chamber and when the cup peripheral case is disposed at an upper location, a region inside the cup peripheral case is isolated from the outside. An opening through which the arm passes is installed on the cup peripheral case.

Abstract: Disclosed is a liquid treatment apparatus for processing a lower surface of the substrate. The apparatus includes a first nozzle disposed below a lower surface of the substrate retained by the substrate retaining unit to eject a treatment liquid towards the lower surface of the substrate, the first nozzle having a plurality of first ejection ports, which are arrayed from a position opposing a central portion of the substrate retained by the substrate retaining unit to a position opposing a peripheral portion of the substrate retained by the substrate retaining unit. An ejecting direction of the treatment liquid ejected from the first ejection port is inclined towards a rotation direction of the substrate rotated by the rotational driving unit.

Abstract: Liquid processing units 2 each for performing a liquid process on a substrate are arranged horizontally side by side, a gas exhaust pipe 3 for exhausting an atmosphere within the liquid processing units is provided under the liquid processing units 2 to be extended along an arrangement of the liquid processing units 2, and a flow control member group 402 is disposed under the gas exhaust pipe 3. Liquid supply main pipe 5 and liquid drain main pipe 6 are provided under the flow control member group 402 to be extended along the arrangement of the liquid processing units 2. Liquid supply branch pipes are branched from the liquid supply main pipe 5 and connected with the liquid processing unit 2 via the flow control member group 402, and liquid drain branch pipes are branched from the liquid drain main pipe 6 and connected with the liquid processing unit 2.

Abstract: Embodiments of the disclosed technology provide a cleaning device comprising a cleaning tank and a filter system, wherein, an overflow port is provided at the top of the cleaning tank, liquid in the cleaning tank can overflow through the overflow port toward an inlet of the filter system, and then flow back into the cleaning tank via an outlet of the filter system.