Abstract:
A pair of sheets of material surround one or more quantities of refrigerant gel, which may be integral to the wrap or contained within removable gel packs. Integral gel may be permanently installed within the interstice between the layers, or the layers may form an open-ended pocket into which removable gel packs may be slid. The wrap surrounds with keg, and may optionally be fully or partially openable or reclosable so as to accommodate a side tap or for installation and removal. Alternatively no side opening may be provided.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation-in-part of copending U.S. Utility patent application Ser. No. 13/596,726, which claims the benefit of U.S. Provisional Patent Application No. 61/528,416, filed Aug. 29, 2011, which is hereby incorporated by reference. 
     
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    Not Applicable 
       PARTIES TO A JOINT RESEARCH AGREEMENT 
       [0003]    Not Applicable 
       REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISK APPENDIX 
       [0004]    Not Applicable 
       BACKGROUND OF THE INVENTION 
       [0005]    The invention relates generally to the field of beverage cooling, and specifically to re-usable cold wraps containing a refrigerant gel for application to beverage cooling kegs. 
         [0006]    Beverage kegs are typically used to store and dispense large quantities of a contained beverage for consumption by a large number people. The contained beverage is most often beer, but other beverages, such as root beer, are commonly available. While many indoor keg set-ups feature a specially designed refrigerator to keep the keg and its contents cool, such devices are relatively fixed to the location of installation, and therefore may not always be available, especially at outdoor events and especially where a full sized keg or barrel is desired to provide beverages to a large number of people. 
         [0007]    The prior art discloses a number of wraps and bags that may be applied to a beverage keg to keep it cool. Some simply involve an air or neoprene insulating layer, while others apply ice or a freezable refrigerant gel. Within wraps that apply a refrigerant gel, those known in the art tend to be bulky (making them difficult to store, freeze, transport, and install), tend to be fiddly to properly fit around a keg, and generally lack special access points for kegs that feature a tap at the side or bottom, rather than at the top, particularly increasingly popular disposable mini kegs. Further, many of the prior art keg wraps employing a gel employ manually inserted gel packs stored in pockets. While this type of system provides versatility, it also greatly increases the number of parts that must be separately managed and cared for. 
       SUMMARY OF THE INVENTION 
       [0008]    Accordingly, the invention is a beverage keg cooling wrap. A pair of sheets of material surround one or more quantities of refrigerant gel, which may be integral to the wrap or contained within removable gel packs. Integral gel may be permanently installed within the interstice between the layers, or the layers may form an open-ended pocket into which removable gel packs may be slid. The wrap surrounds with keg, and may optionally be fully or partially openable or reclosable so as to accommodate a side tap or for installation and removal. Alternatively no side opening may be provided. 
         [0009]    Additional features and advantages of the invention will be set forth in the description which follows, and will be apparent from the description, or may be learned by practice of the invention. The foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]    The accompanying drawings are included to provide a further understanding of the invention and are incorporated into and constitute a part of the specification. They illustrate invention and, together with the description, serve to explain the principles of the invention. 
           [0011]      FIG. 1  illustrates the first exemplary embodiment fitted around a common top-tapped beverage keg, displaying the cold wrap  1 , the keg  2 , Velcro strip  3 , the tap  4 , the first fastening point  10 , the second fastening point  11 , the first Velcro surface  12 , the second Velcro surface  13 , the first lesser edge  14 , and the second lesser edge  16 . 
           [0012]      FIG. 2  illustrates the second exemplary embodiment fitted around a side-tapped beverage keg, and featuring an opening to accommodate the tap, displaying the cold wrap  1 , the keg  2 , the Velcro strip  3 , the tap  4 , the opening  5 , and the corner fastening means  20 . 
           [0013]      FIG. 3  illustrates the third exemplary embodiment fitted around a bottom-tapped beverage keg, and featuring an opening to accommodate the tap, displaying the cold wrap  1 , the keg  2 , the Velcro strip  3 , the tap  4 , the opening  5 , and the corner fastening means  20 . 
           [0014]      FIG. 4  illustrates a sectional view of the inside of the keg wrap, displaying the pair of sheets of material  40  and  41 , and the refrigerant gel  42 . 
           [0015]      FIG. 5  illustrates a top and bottom view of the refrigerant gel packs  500  of the fourth exemplary embodiment. 
           [0016]      FIG. 6  illustrates a left side elevated perspective view of the second exemplary embodiment, displaying the cold wrap  601 , the seams  630 , the pockets  631 , the pocket top openings  632 , the pair of sheets of material  640  and  641 , the drawstring channel  650 , and the drawstring  651 . 
           [0017]      FIG. 7  illustrates a right side elevated perspective view of the fourth exemplary embodiment, displaying the cold wrap  601 , the seams  630 , the pockets  631 , the pocket top openings  632 , the pair of sheets of material  640  and  641 , the drawstring channel  650 , and the drawstring  651 . 
           [0018]      FIG. 8  illustrates a top view of the fourth exemplary embodiment, displaying the cold wrap  601 , the pockets  631 , the pocket top openings  632 , the pair of sheets of material  640  and  641 , the drawstring channel  650 , the drawstring  651 , and the elastic band  800 . 
           [0019]      FIG. 9  illustrates a bottom view of the fourth exemplary embodiment, displaying the cold wrap  601 , the seams  630 , the pockets  631 , the pair of sheets of material  640  and  641 , the drawstring channel  650 , the drawstring  651 , and the elastic band  800 . 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0020]    Referring now to the invention in more detail,  FIG. 1  shows the first exemplary embodiment of the invention fitted to a standard top-tapped beverage keg. The invention, in its most basic embodiment, comprises a refrigerant wrap  1  surrounding a beverage keg  2 . In the first exemplary embodiment, the wrap  1  may be held in place by Velcro strip  3 ; the refrigerant wrap  1  leaves the top-located tap  4  exposed. The Velcro strip  3  is comprised of a first Velcro surface  12  affixed to one of the sheets of material  40  of the cold wrap  1  at the first attachment point  10 , and a second Velcro surface  13  affixed to one of the sheets of material  40  of the cold wrap  1 ) at the first attachment point  13 . The two Velcro surfaces  12  and  13  are preferably complementary hook and loop surfaces or vice versa. Optionally, the Velcro surfaces  12  and  13  may be absent, resulting in a seamless sleeve such as the fourth exemplary embodiment of  FIGS. 6-9 . The cold wrap  1  comprises a hollow membrane of flexible material, for example a plastic or elastic sheet, woven, or knit synthetic fiber material, such as nylon. Notably, the given preferred materials are nonabsorbent such that condensation and spillage from the keg  2  may be easily cleaned and dried, allowing the invention to be stored quickly after use without risk of developing mold. 
         [0021]      FIG. 4  shows a sectional view of the cold wrap  1 . The cold wrap  1  may be formed by stitching, fusing, stitching, adhering, or otherwise affixing a pair of sheets of material  40  and  41  together along the first and second lesser edges  14  and  15 , as well as, optionally, the greater edges. Generically, the sheets  40  and  41  may understood to be affixed to one another in a facing manner. Generically, the sheets  40  and  41  need not be the same size, and they need not be affixed around all four edges (one or more edges, for example the top, may be left open) such that the combination of the sheets forms a cylinder (equivalently, the cold wrap  1 ) that is sized to surround the side wall of the keg  2 , or a generic target beverage container. In all preferred embodiments, the top and bottom of the keg  2  is left open and uncovered. Each sheet of material may comprise more than one layer. The cold wrap  1  may, optionally, be divided into chambers by fusing, stitching, or otherwise joining the opposing walls  40  and  41  of the hollow membrane together along lines to separate the chambers. The interior cavity of the hollow membrane is filled with a refrigerant gel  42 , suitable for freezing and refreezing, which may be inserted alone or inside of a flexible, impervious bladder. Many such gel materials are known in the prior art. Also optionally, the Velcro strip  3  may be of different widths to attain different amounts of gripping strength, and may be broken into sections to accommodate differently shaped kegs  2 . It would further be acceptable to replace the Velcro strip  3  with an alternative fastening method, such as hooks and eyes, a lace and eyes, clasps, or buckles. Further, the invention specifically contemplates the greater edges of the cold wrap  1  or all edges other than those supporting the Velcro strip  3  as lacking any fastening means, as shown and described, or, in the case of the fourth exemplary embodiment, a closure means such as the drawstring  651  and elastic band  800 . Similarly, the invention lacks any top or bottom covering, as shown, such coverings being generally fiddly and tending to render the keg  2  difficult to move or operate. 
         [0022]    Referring now to the second exemplary embodiment of  FIG. 2 , the invention is shown fitted around a beverage keg  2  featuring a tap ( 4 ) that protrudes from the side at the vertical center. In this configuration, the wrap  1  features an opening  5 , created by short cuts made transverse to the seam held in place by the Velcro strip  3  or to a separate vertical cut, allowing for the wrap  1  to be peeled back around the tap  4 . Additionally, the wrap  1  may feature a corner fastening means  20  for the peeled back corners to attach to the wrap&#39;s surface, such as buttons or snaps, thereby holding the opening  5  open in a convenient and visually pleasing manner. 
         [0023]    Referring now to the third exemplary embodiment of  FIG. 3 , the invention is shown fitted around a beverage keg  2  featuring a tap  4  that protrudes from the side at the vertical bottom. In this configuration, the lower corners of the wrap  1  peel back around the tap  4 . The corners may be located at the base of the seam held in place by the Velcro strip  3  to form an opening  5 , or may optionally be located along a separate slit or cutout at the bottom of the wrap  1 . Additionally, the lower corners of the wrap  1  could feature a corner fastening means  20  for attachment to the wrap&#39;s surface, such as buttons or snaps, thereby holding open the opening  5  in a convenient and visually pleasing manner. 
         [0024]    Referring now to the fourth exemplary embodiment, the cold wrap  601  embodiment encloses the refrigerant gel pack in a flexible, impervious bladder in the form of the gel packs  500 . In the fourth exemplary embodiment, the cavities correspond to a group of pockets  631  formed by seams  630  between the pair of sheets of material  640  (outer) and  641  (inner). Each pocket  631  holds a gel pack  500 . As shown, the pockets  631  are preferably six in number and equally spaced about the cold wrap  601  such that each is about 60° of arc in angular width relative to the beverage container. 
         [0025]    The cold wrap  601 , as with the above-described embodiments, is open on the top and the bottom, but may be restricted on top via a drawstring  651 , which is threaded through a drawstring channel  650 . Similarly, the cold wrap  601  may be restricted on the bottom by an elastic band  800 . The drawstring channel  650  and elastic band  800  may be formed within the combination of the pair of sheets of material  640  and  641 , involving either or both, as necessary. 
         [0026]    The gel packs  500  of the fourth exemplary embodiment are preferably filled with a refrigerant gel composition by weight of about 98% water and 2% sodium polyacrylate. The outer skin of the gel packs  500  is preferably made of a layer of 3 mil linear low-density polyethylene affixed to a layer of 2.5 mil foil. The sheets of material  640  and  641  are, in the fourth exemplary embodiment, preferably made of a 70D×70D×210T rip stop nylon woven material. The seams  630  are preferably of reinforced cross stitching. Each pocket  631  may be optionally closable with a Velcro closure or other fastener, or left without any closure, as shown. 
         [0027]    While the foregoing written description of the invention enables one of ordinary skill to make and use what is presently considered to be the best mode thereof, those of ordinary skill in the art will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples herein. The invention should, therefore, not be limited by the above described embodiment, method, and examples, but by all embodiments and methods within the scope and spirit of the invention.