Abstract:
An appliance for dispensing a liquid has a housing with two slidably connected portions allowing a liquid container to be disposed between the portions, a tap configured to be connected in a fluid connection with the container and a pressure source configured to be connected in a fluid connection with the container. The housing is configured to accommodate a liquid container.

Description:
CLAIM OF PRIORITY 
       [0001]    This application claims the benefit of U.S. Provisional Patent Application No. 61/256,439 filed Oct. 30, 2009 and International Application No. PCT/EP2010/066527 filed therefrom on Oct. 29, 2010. 
     
    
     TECHNICAL FIELD 
       [0002]    The present invention relates generally to dispensers for beverages for use in a consumer&#39;s home. More particularly, the present invention relates to such beverage dispensers for use with carbonated beverages such as beer or other malt beverages. 
       SUMMARY OF THE PRIOR ART 
       [0003]    For decades, breweries have sought to deliver beer and similar malt beverages to consumers in a “draught” container having a capacity much larger than conventional 12-ounce or 355 mL bottles or cans, but smaller than the conventional commercial keg (approximately 16 gallon or 60L). These draught containers serve to replicate the taste and “experience” of draught beer served in bars and restaurants. Some of these draught appliances have been configured to be refrigerated in a home refrigerator or an ice bucket, and others have been provided with specialized refrigeration appliances. 
         [0004]    Many brewers, particularly in Europe, offer their beer in what is essentially an oversized (1 gallon or 5L) can. Although these devices are provided with an opening resembling a conventional beer tap, these “taps” do little to preserve carbonation and other freshness aspects (principally reduction of exposure to oxygen) of the beer. In the 1980&#39;s, Coors, now Miller Coors, offered beer in a 5-gallon plastic container known as a “Party Ball.” The Party Ball was tapped with a purpose-built pumping tap similar to that employed with a conventional keg. The size and pumping action required of the tap made the Party Ball inconvenient for use in a home refrigerator and the assembly did not adequately maintain beer carbonation and freshness over a period of much more than 24 hours. These offerings have constituted essentially single-use systems appropriate for serving a large group (or a large volume to a small group) over a relatively short period of time. 
         [0005]    More recently, Heineken Supply Chain BV has offered its “DraughtKeg,” which is a metallic container having an integrated tapping apparatus. A nearly identical container, without the tapping apparatus, can be used with a purpose-built refrigerator and tapping apparatus manufactured by Krups AG and Heineken and sold under the trademark BeerTender™. The DraughtKeg, although conveniently sized and tapped, is made of expensive metal, and, according to consumer reports, does not provide for beer freshness for a period greater than a few days. The BeerTender™ appliance is expensive and, being based on the same container as the DraughtKeg, may not provide for long-term beer freshness. 
         [0006]    Miller Coors has recently introduced a draught appliance containing beer in a self-tapped and pressurized bottle or container, which is in turn contained in a cardboard box. It is dimensioned to fit in a home refrigerator, but its aesthetic and consumer appeal is limited. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  is an isometric view of the beverage dispenser according to the present invention. 
           [0008]      FIG. 2  is an isometric view of the appliance of  FIG. 1  showing the bottle removed from the appliance. 
           [0009]      FIG. 3  is an isometric view of the appliance of  FIGS. 1 and 2  opened to admit the bottle. 
           [0010]      FIG. 4  is a side elevation view of the beverage dispenser of  FIGS. 1 ,  2  and  3 . 
           [0011]      FIG. 5  is an end elevation view of the beverage dispenser of  FIGS. 1 through 4 . 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0012]    Referring now to the Figures, and particularly to  FIGS. 1  though  5 , the numeral  11  generally designates a beverage dispenser according to the present invention. As shown in the Figures, the beverage dispenser  11  comprises a housing having a forward, or tap portion  13  and a rear, or receptacle, portion  17 . Tap and receptacle portions  13 ,  17  are slidably connected together for movement relative to one another (together and apart as indicated by the arrow in  FIG. 2  and as shown in the open position in  FIG. 3 ) by a base  19 . Base  19  includes or comprises a pair of rails ( 19 A in  FIG. 3 ) along which tap  13  and receptacle  17  portions slide toward and away from one another. 
         [0013]    A beverage bottle or container  21  ( FIG. 2 ) may be placed and captured between tap and receptacle portions  13 ,  17  of the housing, and the assembly presents a unitary appearance as shown in  FIGS. 1 and 4 . Tap  13  and receptacle  17  portions are moved apart a sufficient distance to admit bottle  21  ( FIG. 3 ), then moved together to enclose, capture, seat, and secure bottle  21  between them. 
         [0014]    Bottle  21 , along with the beverage contained therein, is intended to be replaced as needed, and may be disposable or refillable. As shown in  FIG. 2 , a preferred bottle  21  has a mouth or beverage opening and neck  23  at one end thereof, and a fluid connection  25  at a bottom or opposite end. A valve or closure mechanism is contained in neck  23  to seal and enclose liquid in bottle  21  during shipment and storage and to permit liquid to exit bottle  21  selectively upon assembly into dispenser  11 . Exemplary valves or closures can be found in WO 2008/098936, WO 2008/098937, WO 2009/090223, WO 2009/090224, and WO 2009/090225. 
         [0015]    According to the illustrative and preferred embodiment of the present invention, bottle  21  has a fluid capacity of about 3.8L and is of a “bag-in-bottle” or “bag-in-container” configuration. Accordingly, a relatively rigid outer bottle of the configuration shown contains a flexible and deformable inner container which actually contains the liquid or beverage. As the beverage is dispensed from bottle  21 , the flexible inner container deforms or collapses, reducing head space or empty volume surrounding the beverage. In the case of carbonated beverages, including beer, this reduction of head space permits the beverage to retain its carbonation and minimizes exposure of the beverage to oxygen, thereby retaining its freshness. 
         [0016]    As shown in  FIGS. 1 ,  2  and  3 , beverage dispenser  11  (and bottle  21 ) according to the preferred and illustrative embodiment of the present invention is intended to be horizontally oriented for accommodation on a shelf in a typical refrigerator. Likewise, bottle  21  is intended to be used in a horizontal orientation in which gravity may not be relied upon to aid beverage dispensing or to fully empty bottle  21 . Therefore, a pressurized fluid, preferably gas, is vented into the space between the relatively rigid outer bottle or container and the flexible inner container. This pressurized dispensing gas is connected and supplied to the interior of bottle  21  through fluid connection  25  and applies pressure to insure the proper and complete deformation or collapse of the flexible inner container and also to provide dispensing pressure to urge the beverage out of bottle  21 . The dispensing fluid or gas may take the form of pressurized or pumped air, carbon dioxide from a pressurized container (e.g. the common  12   g  cartridge), or the like. Similarly, the pressure source for the dispensing gas may be an electric pump, a pressurized gas cartridge, or the like. 
         [0017]    According to a preferred and illustrative embodiment of the present invention, the dispensing gas or pressure source is air that is pressurized by an electrically driven mechanical pump contained in receptacle portion  17  of the housing. The pump is placed in fluid communication with bottle  21 , more accurately the space between the relatively rigid outer container and the flexible inner container, by an opening or fluid connection  25  in the lower end of bottle  21 . An exemplary fluid connection  25  formed in the bottom of bottle  21  (as well as a valve for neck  23 ) is illustrated and described in WO 2009/074285. Alternatively, dispensing gas can be admitted at the neck (near the beverage opening) of bottle  21  or at another location other than at the bottom of bottle  21 . 
         [0018]    The dispensing gas pump contained in receptacle portion  17  of the housing is initially powered or actuated by a contact switch, which is closed upon seating of bottle  21  within receptacle portion  17  of the housing. Seating of bottle  21  in receptacle portion  17  of the housing also effects a fluid connection between the dispensing gas pump and the interior of bottle  21 . The dispensing gas pump is periodically actuated when pressure in the interior of bottle  21  (and on the flexible inner container and beverage therein) falls below a selected threshold. This dispensing gas pump thereby maintains a selected dispensing pressure on the flexible inner container and the beverage or liquid contained therein. 
         [0019]    As shown in  FIG. 5 , tap portion  13  of the housing carries a tap or dispensing assembly  31 . Dispensing assembly  31  includes a tap handle  33  at an upper end thereof, and a dispensing tube or spout  35  at a lower end thereof. The purpose of tap assembly  31  is to dispense beverage from bottle  21  of dispenser  11  upon conventional manipulation or actuation of tap handle  33  (pulling it forward to open and pushing it back or releasing it to close). A fluid connection is established between the beverage contained interior of bottle  21  upon seating of bottle  21  between and in tap  13  and receptacle  17  portions of the housing. Preferably, a manipulation of tap assembly  31  (rotation between 10 and 15 degrees in the clockwise direction shown in  FIG. 5 ) completes and fully establishes the fluid connection and communication between the beverage contained in bottle  21  and tap assembly  31 , including dispensing spout  35 . Beverage can then be selectively dispensed from bottle  21  by conventional manipulation of tap handle  33 . 
         [0020]    According to the preferred and illustrative embodiment of the present invention, dispensing tube or spout  35  is removable from tap assembly or housing  31  for cleaning This prevents growth of mold and bacteria in dispensing spout  35 , which can lead to unhygienic conditions or a foul-tasting beverage. To prevent dispensing of beverage without spout  35  in place, spout  35  may be removed only when the fluid connection between tap assembly  31  and bottle  21  is broken and tap portion  17  is removed from bottle  21 . That is, after tap assembly  31  is rotated counterclockwise 10-15 degrees to disconnect bottle  21  from tap assembly  31  and tap portion  13  of the housing is separated from bottle  21 . 
         [0021]    Tap assembly  31  may also be provided with an “anti-drip” means, which employs atmospheric air or pressurized dispensing gas selectively applied to either “break the vacuum” in or “blow out” spout or dispensing tube  35 . This prevents beverage from continuously dripping from spout  35  after beverage is dispensed and helps maintain the cleanliness of spout  35 . Exemplary anti-drip mechanisms can be found in WO 2009/074285 and U.S. Pat. No. 7,093,470. 
         [0022]    An indicator light  37 , in the form of an LED, is also located on the forward face of tap portion  13 . Light  37  may be electrically coupled to the dispensing gas pump in receptacle portion  17  of the housing, as well as to a contact or pressure sensor contained in the tap assembly  31  or tap portion  13  of the housing. Light  37  thus indicates when bottle  21  is fully seated between tap  13  and receptacle  17  portions of the housing and fluid communication is established between the dispensing gas pump or other pressure source and the interior of bottle  21 , and between tap assembly  31  and neck  23  and the liquid contained in bottle  21 . For example, light  37  may remain red until seating is complete and the fluid connections and communications are established, at which point the light turns green to indicate that dispenser  11  is ready to dispense the beverage. A similar indicator light can be provided in receptacle portion  17  to indicate proper seating of bottle  21  therein, and to indicate whether the dispensing gas pump has power (e.g. is plugged in or has adequate battery power). 
         [0023]    As noted, the beverage dispenser according to the present invention provides a consumer-friendly beverage dispensing appliance or apparatus that is adapted to be oriented horizontally and stored conveniently in a household refrigerator. The bag-in-bottle configuration, the dispensing gas pump, and features of the tap or dispensing assembly combine to maintain the freshness and carbonation of a beverage contained in the bottle for upward of 30 days. Further, replacement beverage-filled bottles can be purchased by a consumer to ensure a fresh and continuous supply of draught beverage. 
         [0024]    The invention has been described with reference to a preferred and illustrative embodiment thereof. Those skilled in the art will recognize that the invention is thus not limited, but is susceptible to variation and modification without departing from the scope of the invention.