Portable dispensing system

A portable beverage dispensing system carried on the body of a person for dispensing beverages comprising;

• a back pack adapted to be supported on a body harness worn by a person and having a central storage compartment,
• a beverage container removably received in said central storage compartment and having a rigid wall surrounded by a flexible thermally insulating and cushioning jacket and an access opening at one end thereof surrounded by a peripheral flange dimensioned to accommodate insertion and withdrawal of a flexible liner in a collapsed condition,
• a releasably locked closure lid removably and sealingly mounted within said beverage container opening and having a peripheral flange configured to engage said container flange and manually moveable lock means thereon to releasably clamp said flanges together and gas filling valve means and liquid filling and dispensing valve means on said lid with respective sealed gas and liquid passages extending through said lid,
• a removable gas and liquid impermeable flexible liner dimensioned to be inserted into and withdrawn from said beverage container in a collapsed condition to be filled with a liquid and substantially conform to the shape of the interior of said beverage container in an installed liquid filled condition,
• said liner having an open end surrounded by a seal element releasably engaged in fluid sealing relation between said container flange and said lid flange in the clamped condition to form a fluid pressure sealed envelope for containing a liquid beverage and the respective gas and liquid passages extending through said closure lid being positioned within the interior of the pressure sealed envelope,
• a pressurized gas container containing gas under pressure removably received in said central compartment and operatively connected to said gas filling valve means on said closure lid to effect pressurization of a liquid contained within said liner,
• a pressure relief valve mounted on said closure lid with a sealed passage extending through said lid in fluid communication with the interior of the pressure sealed envelope for relieving excess pressure in said liner, and
• a flexible hose having a thermally insulated outer covering removably received in said central compartment and operatively connected at one end to said liquid filling and dispensing valve means on said closure lid and a selectively operable liquid dispensing valve at its opposite end for dispensing the pressurized liquid from said liner.

In a liquid beverage dispensing container having a rigid wall and an access opening at one end thereof surrounded by a peripheral flange, a lid having a corresponding peripheral flange configured to be removably received within the beverage container opening, clamping means operatively connected between the container and lid to engage the container flange and lid flange in a releasably clamped condition, and fittings on the lid for connecting the interior of the container in fluid communication with gas filling means and liquid filling and dispensing means;

• a gas and liquid impermeable flexible liner dimensioned to be inserted into and withdrawn from said beverage container in a collapsed condition to be filled with a liquid and substantially conform to the shape of the interior of said beverage container in an installed liquid filled condition,
• said liner having an open end surrounded by a seal element releasably engaged on said lid flange to maintain said liner thereon during insertion and removal and to become engaged in fluid sealing relation between said container flange and said lid flange in the clamped condition to form a fluid pressure sealed envelope for containing a liquid beverage, whereby
• said lid and said liner assembly may be inserted and withdrawn from said container as a single unit and said liner in the installed condition filled with a liquid beverage of one type and after depletion of the liquid beverage, said liner may be refilled with a liquid beverage of the same type, or
• another said lid and said liner assembly may be installed in the same container from which the previous assembly was removed and filled with a liquid beverage of another type without requiring cleaning of said beverage dispensing container when switching from one beverage to another.