Abstract:
The Liquid Flyer Flexi Underwater Raft is a unique, convertible, floatation device that allows one or more people to float horizontally underwater with heads and feet above water. It was designed for relaxed meditative floatation, water play, pain relief, and life-saving purposes, determined by which configuration the user puts it into. It is comprised of six 22-inch members of hollow-core extruded closed-cell polyethylene foam (water noodles), connected via nylon or polyester rope of high tensile strength, that is threaded through originally designed resin end caps, affixed to both ends of each foam member to prevent the rope from tearing the foam. The rope is tied and knotted internally within one member for the appearance of having an invisible seam. When compared to other recreational and life saving similar devices, the Liquid Flyer has many more advantages, as spelled out in this document.

Description:
[0001]    This application claims the benefit of Provisional Application 61/787,602, filed Mar. 15, 2013, for the invention “Head&#39;s Up! Convertible Underwater Raft” by Jeffrey Ashi Olshan. The entire disclosure of the referenced application is incorporated herein by reference. This is the same invention, and I now change the invention title to “Liquid Flyer, Flexi Underwater Raft” for clarity and appeal. Jeffrey Ashi Olshan, a citizen of the United States, who resides in Santa Rosa, Calif., invented the “Liquid Flyer.” 
     
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH 
       [0002]    Not applicable. 
       REFERENCE TO SEQUENCE LISTING, ETC. 
       [0003]    Not applicable. 
       BACKGROUND OF THE INVENTION 
       [0004]    This section provides background information related to the present disclosure of a stable invention that supports relaxation of the human body in water, particularly to aid the quest for achieving meditation in water. The Liquid Flyer (noodle type foam raft) allows the body to achieve a fully relaxed state while floating/meditating, without the need for individuals to hold on to it. This is particularly helpful for aging human bodies, and those with physical impairments or injuries; “sitting” on a firm surface to meditate is often uncomfortable or impossible. Meditating in water, supported by a comfortable lightweight noodle raft, makes the body feel much lighter and temporarily eases pain due to reducing the effect of gravity. This can be a substantial aid to improving health. 
         [0005]    The Liquid Flyer can be used as: a meditation aid; water toy; a lifesaving device; a floatation device for patients in rehabilitation therapy; and for pain relief for burn survivors by floating them in a liquid environment, under medically approved conditions. It is lightweight, compact, toss-able, and easily transported and stored. 
         [0006]    I accomplish this by assembling the Liquid Flyer through our identified structural components, without mattress-style slabs or inflatable parts—which can be easily punctured and/or lose buoyancy. U.S. Pat. Nos. 2,068,134; 2,939,158; and 3,068,494 are examples of water mattresses composed of flexible air-impermeable materials like vinyl plastic. My invention eliminates the concerns and risks of under- and over-inflation in these designs. 
         [0007]    This invention falls into the categories of: water flotation devices; water toys (I have watched children play extensively in pools with a prototype of Liquid Flyer); devices for comfortable meditations (in water); and life-saving devices. The USPTO Class definition for Class 441 buoys, rafts, and aquatic devices includes “other aquatic devices.” It is noted that rafts, Subclass 35, are buoyant devices “free floating, of shallow draft and little free board,” and usually have platforms or floors for supporting the user. Our Liquid Flyer has no floor or platform and, therefore, falls outside the strict definition of raft under this classification, but buoyancy and its use in water still validate Class 441. 
         [0008]    Under Class 441, Subclass 129—body supporting buoyant device—may be appropriate for the Liquid Flyer because it is a recreational and a generally slow-moving device, although it is designed for use by more than one person at a time (not just one). Alternatively, Subclass 136 might be used, which is provided for aquatic devices not specifically provided for elsewhere in the schedule. The author has reviewed patents falling under Class D21—games, toys and sports goods—Subclass 803, for swimming and devices to aid propulsion or floating the body. As a floating toy for children, it could be classified as D21/803. 
         [0009]    I see similar art in design patent D655,3645 from Mar. 6, 2012, U.S. Classification D21/805, for a buoyant assistive device in which there appears to be a curved foam member, with a strap running through it, used for support around the torso. Another design patent from Apr. 4, 2000, is Des. 422,331, wherein a floatation device is created from what appears to be flexible foam members, in a shape similar to but not actually comprising a figure eight, under U.S. classification D21/803. Neither of these devices offers the convertibility of the Liquid Flyer. 
         [0010]    The search for prior art reveals the drawings of U.S. Pat. No. 5,571,036 from Nov. 5, 1996, wherein buoyant flexible foam tubes are used in a “U” shape along with mesh or other fabric means to hold the “U” shape and provide floatation support of the head and chest allowing the body to be only partially submerged. That device is described as a “Flexible Tube Floating Sling” where a person can lie supine or prone, but their lower body half remains under water, and their head remains up on the sling. That patent provides improved stability over a flat floating mattress, because it provides a lower center of gravity to help keep a body stable on the sling. Unlike the Liquid Flyer, the body is still pressed against a platform. 
         [0011]    The Liquid Flyer will be the first “underwater” raft to allow one or more people to float with their entire bodies “horizontally under the water” while their heads and feet—or just faces and toes—stay above water, each resting on one of the six members of the Liquid Flyer. No other raft or flotation device allows one or more people to do this so easily and comfortably for an indefinite period of time. I cite U.S. Pat. No. 5,176,554 dated Jan. 5, 1993, for a buoyant aquatic recliner that allows only one body to be submerged under the water in differing reclining positions. In that art, the described device comprises a torso supporting section, a thigh supporting section, and a lower leg supporting section. It can be adjusted to achieve a preferred body position by releasable attachment methodology. Each supporting section is comprised of a “pair of elongated substantially rigid and inelastic side members,” which could make the device heavier and harder to manage, as the user attempts to “adjust his position in the water by adjusting, preferably in unison, the location of each flotation member along the sides of each body supporting section . . . ” In said device, adding or subtracting floatation members to the sides of the “body supporting section” could also adjust buoyancy to accommodate differing body weights. I improve on that device with the availability of noodle technology coupled with my original end caps, while accommodating more than one person when desired. 
         [0012]    Additionally, the Liquid Flyer is convertible (or changeable). The Liquid Flyer can be used in the following configurations: rectangle for floating one or more bodies horizontally; circle or hexagon to float several bodies; triangle to vertically support one to three bodies with head upright and legs below water surface; a figure eight when a carabiner clip is used to hook it together in the middle; folded in half and resting upon itself, it makes an armchair-shaped “U” for sitting and exercising in the water; and doubled up in two rows of three to float three people under lifesaving conditions. 
         [0013]    The Liquid Flyer is inherently buoyant because the noodles are manufactured from unique closed-cell, extruded polyethylene foam that floats and resists water absorption. Constructed from the world&#39;s largest-selling water toy, swimming pool noodles, the Liquid Flyer removes the discomfort some people experience when their bodies are resting on nylon and/or vinyl plastic floatation products. The Liquid Flyer&#39;s foam noodle members are easy on the skin, durable, and will not puncture. While water noodles are seen available for use at many swimming pool facilities, public and private (such as the YMCA), a person must hold onto a single noodle for support. Our invention improves this art by allowing an individual to rest in a lying supine position with only head and feet or ankles resting on the Liquid Flyer, so that even when or if that individual falls asleep, s/he is completely supported by the raft and will not fall out or roll off. This invention supports meditation, relaxation and enjoyment, rehabilitation, and safety. It offers another alternative to improving health. If used in a life-saving situation, exhausted victims can lie on the raft, two people at a time, waiting rescue. 
       BRIEF SUMMARY OF THE INVENTION 
       [0014]    The Liquid Flyer was originally designed for use with the soon to be published book titled,  Zen Liquid Flying—Meditations in Water  by Jeffrey Ashi Olshan. (The book is the intellectual property of the company “Ashi Arts Unlimited, LLC.”) The Liquid Flyer is a convertible, or changeable, invention in that it can take on several different configurations while serving several different purposes. While developing it, I saw that it can serve as a meditation raft, a swim float or toy, a life saving floatation device, a device to help alleviate pain in burn survivors, and can serve by floating patients in certain rehabilitation therapies or other medical therapies as identified when product is available. 
         [0015]    When not in use, and floating independently on water, the Liquid Flyer will often take on the shape of a circular hexagon comprised of six (6) 22″ length round foam (swim noodle) members, each with at least a 2⅜″ diameter, connected together by an unseen, internal nylon (or polyester) industrial ¼ inch diameter rope. Each 22″ noodle member will be capped on both ends with an original fabricated resin end cap to protect the foam from tearing as the rope exerts pressure on the foam members when human bodies are resting on it or clinging to it. When the end caps are in place at the ends of each 22″ member, a rope cut to 12′-8″ length will be threaded through each member consecutively, tied, and the knot will be hidden inside one of the six members, creating a seamless appearance. Two carabiner clips will be clipped onto each Liquid Flyer to support both the figure eight and the triangle configurations (triangle when the raft is tossed into water in life-saving functions). An optional soft neck cushion, with a five-inch diameter, split on one side and hollow in the center, that wraps around one 2⅜″ diameter foam member, will be available for those needing such support and comfort. The carabiner clips can also be simultaneously attached to a water bottle or sun lotion bottle, as needed while still functioning to connect two sides of the raft. 
         [0016]    The Liquid Flyer will be held together for storage, shipment, and transport by a water resistant tote bag. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0017]    1.  FIG. 1 : Basic Liquid Flyer with dimensions 
           [0018]    2.  FIG. 2 : Cross section of interior corner detail 
           [0019]    3.  FIG. 3 : Cross section of end cap interior detail 
           [0020]    4.  FIG. 4 : Interior end cap detail with dimensions 
           [0021]    5.  FIG. 5 : Exterior end cap detail with dimensions 
           [0022]    6.  FIG. 6 : Bottom view of end cap 
           [0023]    7.  FIG. 7 : Top view of end cap 
           [0024]    8.  FIG. 8 : Perspective of triangle configuration 
           [0025]    9.  FIG. 9 : Top view of triangle configuration 
           [0026]    10.  FIG. 10 : Top view of armchair configuration 
           [0027]    11.  FIG. 11 : Perspective view of armchair configuration 
           [0028]    12.  FIG. 12 : Perspective view of figure eight configuration being used by person 
           [0029]    13.  FIG. 13 : Perspective view of rectangle configuration being used by one person 
           [0030]    14.  FIG. 14 : Perspective view of doubled up three-member line with carabiner clip and water bottle 
           [0031]    15.  FIG. 15 : Perspective view of circular hexagon configuration 
           [0032]    16.  FIG. 16 : Perspective view of figure eight configuration created by carabiner clip 
           [0033]    17.  FIG. 17 : Side view of optional headrest around foam member 
           [0034]    18.  FIG. 18 : Cross section of optional headrest mounted on foam member 
           [0035]    19.  FIG. 19 : Cross section of optional headrest in open position 
           [0036]    20.  FIG. 20 : Perspective of two people in Liquid Flyer 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0037]    The Liquid Flyer Flexi Underwater Raft has multiple advantages over prior art in this field. 1) Comprised of extruded polyethylene foam (also known as swim noodles), it is not inflatable so it does not puncture or deflate, hence, cannot sink. 2) It allows one or more people to float horizontally under water with only feet or toes and head or face held above water. 3) When compared to floating on a standard water raft, the Liquid Flyer raft allows for no contact or pressure against the body, so there is no stress on the body due to resting against a solid bottom. This means that people who suffer from back, leg, or arm pain, or any joint discomfort, or from severe body burns can enjoy pain-free floating, because there is no gravity or pressure on the back, buttocks, legs, or arms. 4) With arms hanging comfortably below, one or more people can paddle their way around in the water, moving and turning at will. When compared to standard float-on-top rafts or when seated in an inner tube, paddling the Liquid Flyer is less strenuous and more effective. 5) With supervision and assistance getting into and out of the water, some handicapped individuals can enjoy floating or meditating in water. 6) The Liquid Flyer can be used for some water therapy rehabilitation purposes. 7) As a life-saving device, when compared to ring buoys, it can support more than one life, and allow an unconscious person to remain afloat without having to hold on. Because of its soft nature, if a person in water were to be hit by it when tossed from a ship it would not hurt them. A ring buoy is heavy and solid and could, conceivably, knock a person out if hit in the head. The Liquid Flyer weighs less for nautical weight considerations and costs less to purchase. 8) As a floating meditation device, when compared to a standard one-person floating raft, it allows the ears to be submerged to muffle out environmental sounds. 9) It allows people to float without their bodies being on display, which is of concern to people who are over weight or concerned about body size. 10) It is a convertible device used for water exercises and active and inactive meditations. 
         [0038]    The product size developed here generally fits most people between the heights of four feet and seven feet—due to the flexible, forgiving side members of the Liquid Flyer. For purposes of clarity, I submit this standard size, while I will be producing it in many different sizes, until I learn what the market prefers. 
         [0039]    When folded for storage or transport, it will be 24 inches in length (six 22-inch foam members, held side-by-side and allowing for the end cap thickness and rope on each end)—with a diameter of 9 inches when in a cylindrical tote bag. (The tote bag may be substituted with an 8 inch wide waterproof band around the mid section of the Liquid Flyer held together with Velcro®.) 
         [0040]    The Liquid Flyer as described herein, with two 2¼ inch carabiner clips attached, weighs 1 pound, 10.46 ounces or 26.46 ounces, making it lighter in weight than life saving ring buoys. The invention is assembled by threading a 12′ 8″ by ¼″ rope through one end cap, then a hollow noodle member, and out the other end cap—sequentially, until all six members are held together. The rope is then tied and the knot is hidden within one noodle member. There may be approximately ¾ inch sections of rope exposed and viewable at the corners of whichever configuration the raft is being used in. The rope&#39;s tensile strength will be a minimum of 1,100 pounds. The foam sections of the flyer will not break under any pressure normally used to employ this device and its versatile configurations, because the end caps prevent the rope from tearing the foam members. 
         [0041]    The six members are comprised of water noodles that are 2⅜″ in diameter, hollow with a ¾ inch center hole full length, and cut into 22″ lengths  FIG. 1  ( 1 ). There is nothing inflatable, so the device will not sink from puncture. The noodles will be purchased from a reliable vendor, such as Gladon, who manufactures consistently sized, buoyant, lightweight, unique closed cell polyethylene foam water noodles. Such noodles are UV, water, and mildew resistant, and are best stored out of sunlight. They are highly resistant to water absorption and swimming pool chemicals. These noodles are CFC and HCFC free, and they bend and twist with rough use, allowing some abuse in handling. They are, however, impressionable. For example, when tied with a bungee cord or rope the dents will remain impressed in the foam, some of which may never come out. Noodles come in various colors, so different colors will be used to manufacture the Liquid Flyers. These noodle members support the weight of the user(s) in water. It is possible to intentionally rip the foam, but under normal use this will not occur. 
         [0042]    The end caps,  FIG. 3 through 7 , are key to the raft&#39;s stability and longevity, as they prevent the internal rope,  FIG. 3  ( 3 ) from tearing into the ends of the foam noodles and then tearing open the length of the noodle member body,  FIG. 3  ( 1 ). The caps are resilient and will not crack or break if dropped, for example, onto a concrete poolside, or if accidentally stepped on. In the event that the end cap is dislodged from the noodle, there are no sharp edges that could cause injury. The color of the material, white, will be mixed into the resin so the color cannot scratch or peel off. 
         [0043]    The original end caps,  FIG. 3 through 7 , are manufactured of resin. Our prototypes are made with Smooth-On 300 Series White Urethane Resin. This material is mildew and solvent resistant (pool chlorine will not affect it), and UV resistant. The original prototype of this end cap was designed, sculpted, and molded by the inventor. The silicone rubber mold with its shell mold assures consistency of shape. (This process may be adapted in the future to use the technologies of vacuum forming or injection molding, and to use any newly developed resin-type or viable, utilitarian material that enhances the end cap performance or reduces its cost without compromise to its present integrity). 
         [0044]    The end caps are created by pouring a pre-colored, two-part catalyst resin into a mold. After the resin solidifies, the end cap is removed from the mold. The over cast (extra material) is trimmed off, and the end caps are sanded. Twelve end caps are needed for each Liquid Flyer raft,  FIG. 1 , one covering each end of six noodle members. The smooth rounded caps will be a convex shape. The end caps will be white in color and weigh 1.44 ounces, or 40.7 grams each. For clarity, the mushroom-like end caps will be described in two parts, the cap and the stem.  FIGS. 4 ,  5 , AND  6  illustrate the composition of the end caps. 
         [0045]    The cap,  FIG. 4  ( 10 ),  FIG. 5  ( 10 ), and  FIG. 7  ( 2 ) will be 2.25 inches wide by 0.75 inches thick at its center, graduating down to ⅛-inch thickness rounded radius at its edge. It has a 5/16-inch,  FIG. 7  ( 7 ) diameter hole drilled on center. 
         [0046]    The stem,  FIG. 4  ( 9 ) and  FIG. 5 , will be 2 inches long by 1 inch wide with four teeth,  FIG. 5  ( 5 ) that are ⅞ inch long, graduating from 1/16 inch deep at the base,  FIG. 6  ( 5 ), of the stem up to ¼ inch deep at the top,  FIG. 6  ( 5 ) of the tooth closest to the cap. The stem is hollow with ⅛-inch thick walls  FIG. 4  ( 8 ), yielding an outside diameter of 1 inch,  FIG. 4  ( 9 ), and inside diameter of ¾ inch,  FIG. 4  ( 8 ). The hollow interior remains ¾ inch wide,  FIG. 4  ( 8 ) for 1¾ inches, and becomes ⅜ inch wide hollow,  FIG. 4  ( 11 ), for the last ¼ inch where it meets the cap. 
         [0047]    At the top of each tooth there will be a 30-degree angle,  FIG. 4 , from the top of each tooth to the stem, allowing each tooth to have a rounded point for the purpose of biting into the foam noodle. The width of the teeth is ¼ inch at the top graduating down to ⅛ inch wide at its base,  FIG. 4  ( 5 ). They will be placed at 0 degrees, 90 degrees, 180 degrees, and 270 degrees,  FIG. 6 , of the 360-degree circular shaft stem. The teeth are designed so that when the cap is pushed into the end of the noodle and slightly turned, they grab the foam and prevent the end caps from being easily dislodged,  FIG. 3 . Through extended testing the teeth have proven to be adequate without the need for adhesive to hold the end cap lodged into the noodle member. With the diameter of the shaft of the end caps at 1 inch,  FIG. 3  ( 9 ), pressed into the ¾ inch center hole of the noodle,  FIG. 3  ( 1 A), that stretch also helps keep the end cap fixed within the noodle. 
         [0048]    A length of waterproof, sun resistant nylon (or polyester) industrial rope,  FIG. 3  ( 3 ) and  FIG. 2  ( 3 ), white in color, of ¼ inch diameter, is cut to a length of 12′-8″ at its exact measured and marked points. A knot will be tied,  FIG. 2  ( 6 ), and held within one of the foam sections to give the rope the appearance of a seamless construction. This is the length for our primary design only (and will vary according to differently sized Liquid Flyers that will be made). 
         [0049]    A 2¼″ length carabiner clips (fasteners),  FIG. 14  and  FIG. 16  ( 4 ) will be attached to the mid section of rope, allowing the raft to be joined in the middle, creating a figure-eight shape,  FIG. 16  and  FIG. 12 . The carabiner clips are spring loaded for easy open and close action and have 1″ spring steel split rings. They are typically constructed of anodized aluminum and are readily available and will not rust. The carabiner clips provided can also be simultaneously used to hold a water bottle, to hydrate people,  FIGS. 14  ( 4  and  13 ), or a container of sun lotion. Two carabiner clips will be provided to keep the raft held in a triangular configuration,  FIG. 8  ( 4 ), making it easier to throw the raft a distance into water to aid a person in distress. 
         [0050]    With the figure eight configuration that the clips create, one person may put his/her feet on one end and his/her head on the other end, with the clipped cross-section above the belly keeping the body fully submerged in the water, providing a tighter unit. This shortens the length of the raft, taking up less space in a pool or hot tub. The figure eight configuration also serves to float a person above the water by placing the clipped sections below the back, rather than over the belly. Two people, with each person employing one of the circular loops, can also use the figure-eight configuration,  FIG. 16 , as one would use a round swimming tube, while being joined together. This is particularly useful for parent and child, romantic couples, friends, or people in rehabilitation. 
         [0051]    The Liquid Flyer is used in a triangular configuration,  FIGS. 8 and 9 , for life saving purposes. The advantage of the Liquid Flyer over a ring buoy (standard life saver) for these purposes is that the Flyer can support three people, rather than just one; it takes up less storage space than three buoys; it weighs less; and costs less. The triangle configuration is also a substitute for swimming tubes or inner tubes, while it has the advantage of being puncture free and won&#39;t deflate, hence it is safer for these purposes. 
         [0052]    The rectangle configuration allows a variety of uses. 1) Floaters can lay supine, keep their faces above water with their ears below water to muffle out all exterior sounds that could interfere with a peaceful, silent meditation, when used as a meditation raft. Arms will float comfortably below, creating no gravitational stress on the arms; which could normally interfere with one&#39;s ability to let go into a meditative state. Alternatively, arms can rest comfortably on top of the side members of the Liquid Flyer. 2) The rectangle configuration is also used for a variety of exercises prescribed in the inventor&#39;s book,  Zen Liquid Flying—Meditations in Water.  When not used as a meditation raft or for these prescribed exercises, a person can also lie prone. 3) The most unique aspect of the rectangular configuration, besides allowing the body to float horizontally under water, is that two people,  FIG. 20 , can use it together and even massage each other&#39;s feet as an added benefit. 4) This configuration will also allow for the floating of objects, such as a cooler chest, etc. 
         [0053]    When in the shape of a rounded hexagon, the Liquid Flyer can be used by more than two people,  FIG. 15 . For example, a husband and wife can face each other with one or two small children diagonally across their laps. Another use of this configuration is for a prescribed Circle of Life Meditation, as mentioned in  Zen Liquid Flying—Meditations in Water.  Up to six people can float on their backs on the outside of the hexagon by each person placing the backs of their ankles on one member of the hexagon. 
         [0054]    When folded in half, with three sections on top of three sections, and moved into a U-shape,  FIGS. 10 and 11 , it serves as an in-water (legs hanging down) armchair for sitting in the water. Along with other possible uses, the armchair configuration can be used for the prescribed “Bicycle Meditation” (exercise) as described in  Zen Liquid Flying—Meditations in Water  book. 
         [0055]    When folded in half, with two rows of three foam members held side by side,  FIG. 14 , there are a variety of uses that this configuration can be employed for. Examples include: 1) for life-saving purposes, for approximately three people whose maximum weight does not exceed 500 pounds; and 2) for various exercises as indicated in  Zen Liquid Flying—Meditations in Water.    
         [0056]    The raft will have an optional soft foam headrest,  FIG. 17 ,  FIG. 18 , and  FIG. 19 , ( 14 ) with an approximately 5 inch diameter, at 10 inches long, hollow inside to fit around the 2⅜ inch diameter foam member, and slit lengthwise on one side, that will slip over any 22″ foam member to provide enhanced cushioning to the neck for those individuals that wish to keep their ears out of the water. When it is closed, it will be secured by Velcro®  FIG. 18  and  FIG. 19  ( 15 ).