Double wall vessel

Abstract

A method and apparatus for cooling smoke wherein a cooling liquid is introduced into a chamber. The chamber includes a containment wall and the method provides for reducing the thermal migration of heat across the containment wall from an outside environment into the chamber. Smoke is received through a stem that protrudes into the cooling liquid. By reducing the pressure applied to the surface of the cooling liquid, through a pressure reduction path, the smoke is drawn downward through the stem into the cooling liquid, where is allowed to bubble up to the surface and enjoyed as cold smoke by a tobacco user.

1 - 18 . (canceled) 
     
     
         19 . A double wall vessel comprising:
 an inner wall having an inner bottom wall portion and an inner side wall portion defining a single chamber;   an outer wall having an outer bottom wall portion and an outer side wall portion;   a vacuum insulating layer that separates the inner wall from the outer wall;   a top opening disposed at the top of the double wall vessel providing access to the single chamber; and   a side opening disposed at a side of the double wall vessel providing access to the single chamber.   
     
     
         20 . The double wall vessel of  claim 19 , wherein the top and side openings are each configured to accept a mating structure. 
     
     
         21 . The double wall vessel of  claim 19 , wherein the insulating layer includes air.