Pressure liquid dispenser

Abstract

A pressurised liquid dispenser, primarily for dispensing beer, in use, comprises an inner chamber ( 22 ) for said liquid, an outer chamber ( 15 ) for pressurised gas, the outer chamber surrounding the inner chamber, a casing ( 13:13 a ) of the inner chamber being of plastics material and connected to a casing ( 10:10 a ) of the outer chamber by ribs/webs ( 25:25 a ). A gas pressure regulator ( 24 ) is housed within the dispenser to reduce the pressure of the gas from the outer chamber to the inner chamber, and maintain the lower pressure in the inner chamber as liquid is dispensed therefrom.

1 . A dispenser comprising an outer chamber, which is intended to contain a gas at a first pressure, in use, an inner chamber, which is intended to contain liquid to be dispensed therefrom, the outer chamber at least partly surrounding the inner chamber, and control means reducing the pressure of said gas, in use, from said first pressure in said outer chamber to a lower second pressure in said inner chamber, and maintaining said second pressure in said inner chamber as liquid is dispensed therefrom, in use, a plastics material casing of the inner chamber being connected to a casing of the outer chamber by a plurality of ribs/webs.  
   
   
       2 . A dispenser as claimed in  claim 1 , wherein the outer chamber acts, in use, as an insulation layer to maintain chilled the liquid in said inner chamber.  
   
   
       3 . A dispenser as claimed in  claim 1 , wherein the outer chamber has a non-return valve for charging it with gas in an appropriate quantity and at an appropriate pressure.  
   
   
       4 . A dispenser as claimed in  claim 1 , wherein liquid is dispensed, in use, from the inner chamber through a valve in an opening thereof.  
   
   
       5 . A dispenser as claimed in  claim 1 , wherein the outer chamber is of U-shape in longitudinal cross-section.  
   
   
       6 . A dispenser as claimed in  claim 1 , wherein the outer and inner chambers are of annular and circular shape respectively in lateral cross-section.  
   
   
       7 . A dispenser as claimed in  claim 5 , wherein each rib/web in the outer chamber is of U-shape.  
   
   
       8 . A dispenser as claimed in  claim 7 , wherein each rib has its free ends terminating short of an upper end of the outer chamber.  
   
   
       9 . A dispenser as claimed in  claim 1 , wherein the ribs are equi-spaced apart within the outer chamber.  
   
   
       10 . A dispenser as claimed in  claim 1 , wherein each rib is made of plastics material  
   
   
       11 . A dispenser as claimed in  claim 1 , wherein the casing of the outer chamber is made of plastics material  
   
   
       12 . A dispenser as claimed in  claim 1 , when charged with said gas in its outer chamber and said liquid in its inner chamber.