Abstract:
A handheld reusable multi-compartmental mixing and dispensing container for storing fluids separately therein before mixing. The proportions of the substances in a mixture are externally adjustable. The desired concentration is determined by test components attached to the container that sense various environmental and user-specific factors. The amount of the adjustable substance to be added to a mixture is controlled by an adjustment wheel on the container. A single control button allows a user to choose what fluid substances are to be mixed and dispensed. A pressurized gas propellant in a replaceable canister moves the fluid around and out of the container.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a hand-held reusable multi-compartmental mixing and dispensing container that permits a user to customize a mixture of fluids to be dispensed. 
         [0003]    2. Description of Related Art 
         [0004]    As science and medicine have added to our knowledge base, our understanding of the human body and effects of various environmental factors on it has advanced. We are adept at manufacturing and using various substances to enhance our appearance, protect us from the environment, improve our health, for example. The market is flooded with cosmetics and pharmaceutics. 
         [0005]    Currently most of these compounds come premixed, or, at most, in containers that allow one time mixing and dispensing in preset proportions. But, the human body and the environment are both dynamic. As a result, the cosmetic or pharmaceutical mixture being dispensed is rarely, if ever, specifically tailored to the individual and her environment. 
         [0006]    For example, sunscreens are produced with a specific preset amount of UV protective factors (SPF), emollients, and fragrances. As a consumer uses the product, the contents of the sunscreen being dispensed cannot be adjusted to take into account the changes in her skin color, the time of day, the weather, her individual preferences, or even whether it is more convenient to use a spray or a cream. Similarly, hair dyes are provided in a limited number of colors. A user is left to figure out what shade would work best with her hair color and type. It is not possible to do a match with any degree of accuracy. The containers used are not amenable to midstream changes in the relative proportions of the ingredients. The containers are not capable of dispensing a test sample. Dispensing of medicinal creams and lotions also presents a problem. Although dermatologists, and other physicians who treat skin conditions, most commonly prescribe the use of steroids, anti-fungal agents, antibiotic creams and emollients, there are no containers available that allow a patient to mix the cream and lotion at will, and dispense the mixture as a unit. 
         [0007]    As a result, a user does not experience the full benefits of a product simply because the mixture has not been tailored to meet their individual needs. They end up buying and using multiple products, which will be less effective. This has a negative impact on both the consumer and the environment. Plastic containers are a large contributor to landfill waste. Moreover, disposal of containers with product may be toxic. 
         [0008]    With regard to medicinal applications there is a significant risk that patients who must juggle multiple medications or creams that neglect one or more of the necessary components of their treatment plan. About 50-75% of patients are noncompliant with regard to their prescriptions. Only 20% of diabetics adhere to their insulin administration regime faithfully. This is very expensive in terms of human health and the economy. In fact, it has been estimated that noncompliance with healthcare regimes “accounts for up to $100 billion in healthcare and productivity costs. 
         [0009]    A dispensing and mixing container that takes into account the uniqueness of the each user, as well as the real-time environmental factors, providing personalized cosmetics, dermatologic creams, or administration of medications is needed. The current state of the art does not provide such a device. 
         [0010]    With regard to dispensing containers, there are various types available: 
         [0011]    U.S. Pat. No. 4,893,729 by Iggulden, Streck describes a bottle designed to dispense various mixtures of lotion and UV protective agents. The dispenser uses bores, does not have a self-retractable tip, is not powered by a pressurized gas canister, and does not give the user guidance as to the right amount of sunscreen agent or other compound that should be added. It cannot be personalized. 
         [0012]    EP 1350739, US 2009/0152300, U.S. Pat. No. 5,638,992, and WO 2002/022467 all describe containers that mix two fluids. In EP 1,350,739, separation is maintained by a breakable seal. In US 2009/015230, it is not. In U.S. Pat. No. 5,638,992, the inner pressurized container bursts causing mixing. In WO 2002/022467, the compounds remain separate until dispensed and are not mixed. In none of these examples, is the user able to select the proportions of the compounds that will form a part of a final mixture. Mixing is done on a one-time basis. The amounts dispensed are not user-determined by test amounts. These prior art examples do not allow the product to be personalized. 
         [0013]    With regard to UV detection and measuring, various products have been devised. 
         [0014]    U.S. Pat. No. 5,589,398 by Krause et al. describes UV Fastcheck strips. Test strips that use a photoactive chromogenic substance to detect sunburn-causing UV radiation. These test strips do not take into account a user&#39;s skin color, are for one-time use only, are not paired with a sunscreen mixer and dispenser, and do not allow the user to choose between spray or cream. Furthermore, exposure to light causes the UV Fastcheck strips to lose their function. 
         [0015]    US 2008/0259315 by Pikowski utilizes titanium dioxide and resazurin to create an irreversible change upon UV exposure. This will allow a user to determine when they have been exposed to excess UV radiation. It will not advise a user, in advance, about the sunscreen protection necessary. It will not tell a user whether a sunscreen is effective. 
         [0016]    A UV Sun Strength Warning band operates via photochromic dyes. The band does not take a user&#39;s skin color into account. 
         [0017]    Therefore, although there are various mixing bottles and test strips on the market, none of these products allow repeated mixing and dispensing of varying proportions and amounts of the contained substances. None allow the substance to be altered by the user each time a mixture is dispensed, informed by measurements resulting from the use of test components that sense the environment and the user, and are fixed to the surface of the container. 
       SUMMARY OF THE INVENTION 
       [0018]    A multi-compartment container capable of mixing adjustable proportions of one substance with one or more other substances, and selectively dispensing varying amounts of the mixture via a user-selected system is provided. The desired proportions of substances within a mixture are determined according to input received from test components or other interfaces that sense various environmental and user-specific factors. 
         [0019]    The container holds various substances in separate compartments without allowing them to mix, preventing chemical interaction and extending shelf life. The compartments are refillable, making it possible to give the user a range of choices for what they would like to mix. For example, in the case of sunscreen, the user could have a choice between the type of UV filtering agent, the fragrance, the emollient content, whether the mixture is dispensed as spray or cream. In the case of a dermatologic treatment agent, the user could choose the amount of emollient needed and, based on input from a treating physician, whether it is mixed with a steroid or, for example, an anti-fungal. In the case of medication for diabetes, a patient could be administered an individually tailored mixture of fast and slow-acting insulin mixed with diluent or another substance, based on factors such as their blood sugar and the time of day. 
         [0020]    The user can choose the proportion of each substance that will be mixed. This choice is guided by a system of environmentally and user-sensitive test components. For example, in the case of sunscreen, test strips will be able to sense the ambient UV radiation. The user can then correlate this with a strip that displays their particular skin color, their natural defenses against UV radiation, and select the amount of tanning they would like to achieve. The result will yield a number that will guide them in adjusting the mixture. A separate multi-function button controls the amount and type of substance dispensed. In the case of a dermatologic treatment, the detecting strips would measure skin pH, an indicator of the presence of, or vulnerability to, infection, and factors such as dermal moisture and temperature. In the case of diabetes treatment, the detecting strips would measure blood sugar and be adjusted to the time of day. 
         [0021]    Expulsion of a selected mixture is accomplished by retractable nozzles, allowing the user to select cream, spray, or an alternate method of application. Nozzles are designed to prevent spillage, or the buildup of debris. A pressurized gas system that uses a replaceable cartridge moves the mixture. Because there are no electronic components or batteries, the container of the present invention is both lightweight and environmentally friendly. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0022]    The exact nature of this invention, as well as the objects and advantages thereof, will become readily apparent from consideration of the following specification in conjunction with the accompanying drawings in which like reference numerals designate like parts throughout the figures thereof and wherein: 
           [0023]      FIG. 1  is a front view of the outside housing of a preferred embodiment of the container according to the invention, showing a temperature sensitive logo and environmentally and user sensitive test components; 
           [0024]      FIG. 2  is a back view of the outside housing of  FIG. 1  illustrating the replaceable anti-friction plate that fits in a surrounding silicone ring; 
           [0025]      FIG. 3  is an illustration of the separate compartments within the housing of  FIG. 1 , showing threaded openings for the fill caps for each enclosure; 
           [0026]      FIG. 4  is a partial cross-section of the container showing the major internal components that regulate the flow of gas and substances; 
           [0027]      FIG. 5  is a bottom view of the housing of  FIG. 4  showing a threaded wheel that enables access to and replacement of, a pressure cartridge; 
           [0028]      FIG. 6  illustrates a graded multilayered UV sensitive strip with its light sensitive symbols surrounded by non-light sensitive paint; 
           [0029]      FIG. 7  is a cross section of the UV sensitive graded strip of  FIG. 5 , showing its multilayer composition; 
           [0030]      FIG. 8  is a front view of a multilayer skin color match sticker system used in the preferred embodiment of the present invention; 
           [0031]      FIG. 9  is a cross-section of the multilayer skin color match sticker system of  FIG. 8  showing the individual layers; 
           [0032]      FIG. 10  is a view of the left side of the housing of  FIG. 1 , showing an ergonomic replaceable silicone hand grip area; 
           [0033]      FIG. 11  is a view of the right side of the housing of  FIG. 1  showing a main push button and the self-retractable nozzles; 
           [0034]      FIG. 12  is a cross section of the container of the container of  FIG. 1  showing the major internal components of a container for UV IQ; 
           [0035]      FIG. 13  is a top view of  FIG. 1  showing self-retractable nozzles and an adjustment wheel used to control the outflow of substance; 
           [0036]      FIG. 14  is a partial cross-section of  FIG. 1 , showing the position of internal components and gas, substance, and mixture movement when the lower part of the main button is depressed; 
           [0037]      FIGS. 15A ,  15 B,  15 C, and  15 D illustrate the function of a push button, nozzles, and main piston in the container of  FIG. 1 . 
           [0038]      FIG. 15A  shows the button in neutral position when there is no gas flow; 
           [0039]      FIG. 15B  shows the bottom part of the button depressed; 
           [0040]      FIG. 15C  shows the top part of the button depressed; 
           [0041]      FIG. 15D  shows the self-retracting nozzles; 
           [0042]      FIG. 16A  is a partial section that shows the main valve system; 
           [0043]      FIG. 16B  shows the valve in a slightly open position; 
           [0044]      FIG. 17  is a block diagram representation of the gas and substance flow when the push button is engaged; and 
           [0045]      FIG. 18  is an exploded view of the pipe system and components for movement of gas, individual substances, and the resulting mixture. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0046]    A preferred embodiment of the container of the invention, that is used to dispense sunscreen lotion, is shown in  FIG. 1 . A clicking adjuster wheel  20  on top of the container allows a user to select the proportion of substance, such as UV protectant, that will be mixed in with one of the other two substances in the container. The adjuster wheel  20  is connected via a shaft to an adjustable pressure-regulating valve, allowing precise control of the amount of substance added to a mixture, as will be explained hereafter. In the case of UV protectant, an arrow  21  points to a symbol that correlates with the SPF being dispensed. The arrow is located directly adjacent to the adjuster wheel. The SPF symbol also correlates with the number of clicks that the user has executed from a neutral position. The wheel  20  is separated from the main housing by a ring  22  of reduced friction material, allowing smooth dialing of the wheel  22 . 
         [0047]    A reusable housing is preferably made of aluminum/zirconium, but other moldable equally durable materials such as plastics may be used. The housing contains multiple compartments. The housing is preferably covered with gorilla glass  23 . Three openings in the housing secured by fill caps allow substances to be inserted into the container. The substances are added after removing a screw cap that covers an access port to the container. There are three screw caps, one for each compartment in the container, at the top left of the container screw cap  24 , at the bottom left screw cap  25 , and at the bottom right of the container, screw cap  26 . Each cap features a coin-width slot in its surface for easy opening. It has threads that allow it to screw into the housing. The openings allow refilling of the respective compartments illustrated in detail in  FIG. 3 . Compartment  27 , may contain the UV protectant. Compartment  28 , may contain a cream. Compartment  29 , may contain a liquid for spraying. The contents, composition and nature of the various compartments can be adjusted, according to user and manufacturer preferences. 
         [0048]    As shown in  FIG. 4 , a CO 2  gas canister or pressurized cartridge  30 , supplies the force required. The cartridge  30  screws into the internal main pressure pipe at a receiving nozzle  31  located at the neck of the cartridge  30 . The cartridge is held in place at the base of the container. The cartridge  30  can be replaced by removing a threaded wheel  32  that is preferably screwed into the base of the container. A reduced friction ring  33  located between the cartridge housing and the wheel makes it easier to remove and replace the wheel  32 . As illustrated in  FIG. 5 , the threaded wheel  32  has double arrows  34 , allowing the user to quickly ascertain the open/close direction. 
         [0049]    Referring again to  FIG. 1 , an important part of this container-dispenser is located on the front of the container. Several environmentally and user sensitive components are used. A centrally located temperature and moisture-sensitive painted logo  35  alerts the user when the container has been exposed to temperatures that are too high for optimum function. Test components are preferably located to one side of the logo, and can be adjusted to the manufacturer&#39;s and user&#39;s specifications. In the case of the container for UV product, a UV-sensitive graded strip  36  is located to one side of the logo  35 . This UV-sensitive strip is shown in more detail in  FIG. 6  and  FIG. 7 . 
         [0050]    Referring to  FIG. 7 , the innermost or base layer  37  of the strip is a non-thermoconductive light-reflective layer, providing some thermal insulation to the container contents, with adhesive on the underside, attaching the strip to the external housing of the container. The next layer  38 , is a non light-sensitive reflective paint. The operational part of the strip is partially contained in the next layer, which contains symbols made of UV sensitive paint  39  surrounded by UV insensitive paint  40 . The next layer  41  is a UV variable graded filter as found in UV shielded glass windows, films, and glasses. Although  FIG. 7  only shows one grade of UV filter, the actual strip will have consecutive grades adjacent to each other. When exposed to light, as the light intensity increases and more UV can pass through a particular grade of filter, the light-sensitive paint under that filter will change color. By contrasting with the non-light sensitive same color paint, the user gets a visual representation of the amount of UV light to which they are being exposed. That is, when the UV light reaches the limit whereby it is detected, the UV sensitive paint changes color and, by its contrast with the UV insensitive paint, the symbol, which correlates to the number of clicks of the upper wheel needed to dispense the correct amount of SPF, becomes visible. 
         [0051]    Referring again to  FIG. 1 , as well as  FIG. 7 , a sliding strip cover  42  is used to reset the light-sensitive strip by blocking light exposure so that the light sensitive paint returns to its normal color allowing the UV detector to be re-used multiple times. If desired, the user can self-test the UV protection cream being dispensed by applying a small amount to the strip  36 . This tells the user whether the sunscreen being dispensed is sufficient for the day, time and location. 
         [0052]    As shown in  FIGS. 1 ,  8  and  9 , a skin color matching sticker  43  is located directly adjacent to the UV-detection strip  36 . It may be removed to allow a user to match their own skin color with the color spots on the strip. As shown in  FIG. 9 , peel-off stickies  44  start with a fair skin color. Each stickie  45  thereafter becomes progressively darker. The stickies  43  are located next to the UV detection strip  36 . The stickies  43  have numbers along their length. They are attached to the container by means of adhesive  46 . A user locates where the UV-sensitive paint changes color causing the respective symbol to become visible. The user matches that number symbol to the number located adjacent to this region on the skin color strip  43 . This number on the skin color strip will correspond to the number of clicks of the adjuster wheel  20  necessary for the container to dispense the correct strength of UV protective cream or spray for that skin color. If the user desires increased protection, she can go up a click. If a suntan is desired, she may go down a click, decreasing the UV protection. 
         [0053]    The back of the container continues with the goal of being user-friendly ( FIG. 2 ). It includes a low friction reflective plate  47 , so that the container can double as a mirror. The reflective plate is surrounded by a silicone ring  48  that will ensure that the container does not move when placed on a surface. This also makes it easier to replace the reflective plate. To provide holding comfort, a silicone pad  49  ( FIG. 10 ) gives the user a steady grip on the container when discharging its contents. 
         [0054]    A double function push button,  50 / 51  ( FIGS. 1 ,  11 ) on the right side of the container, allows a user to decide whether they prefer the contents of number  1  compartment  27  to be mixed with that of number  2  compartment  28  or number  3  compartment  29  (cream or spray in our embodiment). Pushing on the top part  50  of the button causes movement of an internal piston system  52  ( FIG. 4 ), and discharge of a mixture from compartments  1  and  3 . Pushing on the bottom part  51  of the button discharges a mixture from compartments  1  and  2 . Self-retractable nozzles  53 , which close completely to prevent leakage and dirt build-up, are directly above the button. The function of the button and nozzles will be more fully described hereinafter. 
         [0055]      FIG. 12  is an overview of the internal components of the container and their relationship to each other. An adjuster wheel  20  at the top of the container is attached by a shaft  54  to a threaded conically-shaped flow-regulating valve  55 . The top of the container and the adjustor wheel  20  is shown in  FIG. 13 .  FIG. 14  provides a cross-sectional view of the placement of the internal valve components. The function of the adjuster wheel will be discussed more fully hereinafter. 
         [0056]    Referring to  FIG. 12 , at the bottom of the container, the gas cartridge or pressure vessel  30  fits into a housing  56  between containers  28  and  29 . The gas cartridge is held in place at the bottom of the container by a threaded base  32 , and at the top by a threaded receiving end  31  for the cartridge  30 . This is more clearly seen in  FIG. 14 . As the cartridge  30  is threaded into the receiving end  30 , it is pushed and locks into the main pressure pipe  57 . 
         [0057]    When the push button  50 / 51  is in neutral position, gas is only present in the main pressure pipe  57 . Gas flow is restricted by a ball bearing type high pressure valve  58  ( FIG. 14 ). A rubber or rubber-like piston  59  pushes the ball bearing valve down into a closed position, simultaneously blocking the orifice leading to the main pressure pipe, preventing gas flow. Pushing on the button  50 / 51  moves piston  50  allowing the gas to flow through the device ( FIG. 12 ). 
         [0058]    Referring to  FIG. 12 , the multifunction main push button  50 / 51  that controls the flow of the mixture to be dispensed, and whether the substance from number  1  compartment  27  is mixed with that from number  2  compartment  28  or number  3  compartment  39 , is located on the side of the container and housed in the main casing  23  in a space  60 . An axle  61  in space  60  goes through the control button  50 / 51  allowing it to pivot. A shaft  62  connects the top of the button  50 / 51  to pressure control valve or rubber piston  59 . When the top  50  of the control button is depressed, the shaft  62  and the piston  59  are pushed. If the bottom part  51  of the control button is depressed, the piston  59  is pulled. This push/pull differential determines the direction and amount of gas flow through the flow channels of the container determining whether substance is drawn up into number  2  compartment  28  intake pipe  63  or number  3  compartment  29  intake pipe  64 . The button returns to the neutral position upon release as a result of the action of springs  65 . Details of this system are more clearly shown in  FIGS. 15A-15D  and will be more fully discussed hereinafter. 
         [0059]    A rubber, rubberized, or silicone piston system  52 , as shown in  FIG. 4  and in more detail in  FIG. 16A  is an important element of the container. The piston  59  is housed within a cylindrical chamber containing multiple apertures, two at the top  66   a ,  66   b  and two at the bottom  67   a ,  67   b . The upper apertures  66   a  and  66   b  allow gas to enter number  1  compartment  27 , as shown in  FIG. 12 . The lower left aperture allows gas to enter number  2  compartment  28  and the lower right aperture  67   b  allows gas to enter number  3  compartment  29 . As explained above, the main aperture with ball bearing valve  50  is between the lower two apertures. While the control button  50 / 51  is in a neutral position, the ball valve blocks the flow of gas because it is depressed by the piston  59 . 
         [0060]    Referring to the overview in  FIG. 12 , and the views of the internal components in  FIG. 14  and  FIG. 15 , the dispensing container of the invention operates as follows. When the user wants to dispense a mixture, she will first adjust the adjuster wheel  20  to the desired number of turns or clicks as determined by the previously applied color or symbol matching. This causes the threaded conical valve  55  to move up or down, changing the gap between the valves seating surface and the valve, thereby opening or closing the aperture. This regulates the amount of gas allowed to flow into number  1  compartment  27 . She may then choose whether to dispense cream or spray. If cream, the bottom  51  of the button is depressed, causing the shaft  62  to be pulled, as shown in detail in  FIG. 15B . This causes the rubber piston  59  to move to the right and the ball bearing valve  58  to displace upwards, and open. The gas from cylinder  30  moves into the left side of the piston chamber and via the lower left aperture  67   a  into number  2  compartment  28 . This displaces the substance in compartment  2  causing it to move up the left intake pipe  63  and to the left mixing compartment  68 , as also shown in  FIGS. 12 and 14 . 
         [0061]    At the same time, the gas also moves through the upper left aperture via the one way user adjustable threaded conical flow regulator valve  55  and displaces substance from number  1  compartment  27 . The displaced substance from compartment  1  correlates to the amount of gas allowed to enter compartment  1  by the conical valve  55 . As shown in  FIG. 14 , a specified amount of substance  1  is moved into the left mixing chamber  68 . The resultant mixture moves to a pipe  69  that has a spiral insert to help further mix the substances before they are extruded via the self-retractable nozzles  70 . 
         [0062]    If a user wants to dispense a mixture from compartments  1  and  3 , the top part  50  of the control button is depressed so the spring-loaded shaft  62  is pushed, moving the piston  59  to the left, opening the right-hand side apertures so that gas is allowed to flow, as shown in  FIG. 15C . The gas travels down into number  3  compartment  29 , displacing its contents into the right-side mixing compartment  71 . Simultaneously gas travels upwards through the user adjusted threaded regulating conical valve  55  and enters number  1  compartment  27  at the fixed flow rate. This continuously displaces a fixed amount of substance, such as a UV-protective agent, for example, into the right side mixing chamber  71 . The mixture is mixed and extruded by the retractable nozzle. A user can continuously control the rate and type of substance to be dispensed while at the same time precisely maintaining the proportion of cream or liquid to UV-protectant. A detailed illustration of the structure of piston  59  is shown in  FIG. 16A . A detailed illustration of the conical valve  55  is shown in  FIG. 16B . 
         [0063]    After the mixture of the two substances moves through the spiral containing pipe, the mixture is ejected via one of two self-retracting nozzles located near the top, flush with the outer housing of the container, as shown in  FIG. 15D  and  FIG. 18 . As the mixture enters the dispensing area, it moves through a spring-loaded aperture-containing plate  72 . The mixture causes pressure to build up on the inside of a cone  73 , which is attached to the plate by a shaft  74 . This results in the cone moving forward allowing the pressurized mixture to be expelled, until the pressure is equalized. When there is no pressure on the plate  72 , the spring causes the cone to go back to its initial position and the cone  73  seals off. A detailed view of the various valves and components of the retracting nozzle is shown in  FIG. 18 . Please note that there are seals  75  located between all moving components and pressurized areas to prevent leakage. 
         [0064]      FIG. 17  illustrates the various operations possible with the dispensing container of the present invention, as the result of the organization of the key components. 
         [0065]    A gas cartridge  80  dispenses gas under control of an adjustable valve  83 . A piston valve  85  controls the path of travel of the gas in the dispensing cartridge. 
         [0066]    The piston valve is controlled by moving it left or right by an actuator shaft. Pushing the shaft  87  causes the pressurized gas to flow through adjustable regulator valve  91  to number  1  chamber  93  and through a one-way valve  103  to number  2  chamber  105 . Chamber  1  may contain a UV protectant. Chamber  2  may contain a spray fluid for mixing with the UV protectant. 
         [0067]    The UV protectant from chamber  1  is moved out of the chamber in a predetermined amount  95  by the user by adjusting the bearing valve. The spray fluid from chamber  2  is moved out of the chamber  107  through a check valve  97  into a right hand merging chamber  99 . The mixture moves out of the right hand mixing chamber through a pipe containing a spiral spring  101  to a retractable nozzle  127 , where it is expelled in a UV spray. 
         [0068]    If the shaft of the piston is pulled  89 , the piston moves to the right. This causes pressurized gas to flow through adjustable regulator valve  109  to number  1  chamber  111  and through a one way check valve  121  to number  3  chamber  123 . Chamber  1  contains the UV protectant. Chamber  3  may contain a cream for mixing with the UV protectant. 
         [0069]    The UV protectant from chamber  1  is moved out of the chamber in a predetermined amount  113 , as determined by the user, by adjusting the bearing valve. The cream from chamber  3  is moved out of the chamber  125 , through a check valve  115 , into a left hand mixing chamber  117 . The mixture moves out of the left hand mixing chamber  117  through a pipe cooling a spiral spring  119  to a retractable nozzle  127  where it is expelled as a UV cream. 
         [0070]    The foregoing description of a preferred embodiment of the invention was presented for illustration and description. It was not intended to limit the invention to the precise form disclosed. Those skilled in the art will understand how to best utilize the invention in various embodiments and various modifications as are best suited to the use contemplated. The scope of the invention should not be limited by the specification, but defined by the following claims.