Heated Container

Abstract

A temperature changing container includes a plurality of walls joined to form an enclosure which seals contents of the enclosure within the walls. One of the walls includes a depression extending into the enclosure. Upon activation, chemicals at least partially disposed within the depression change temperature.

What is claimed is: 
     
         1 . A self-heating container comprising:
 a cylindrical metal side wall defining an interior;   a top, can end hermetically joined to the metal side wall;   a metal bottom can end joined to the metal side wall to form an enclosure having an interior, the metal bottom can end including a depression extending into the interior;   a double-seam which hermetically joins the side wall to the metal bottom can end to orient the depression to extend into the interior;   chemicals which are formulated to generate heat when activated; and   a metal closure panel joined to the metal bottom can end to create an enclosure for the chemicals hermetically separated by the metal bottom can end from the interior.   
     
     
         2 . The container of  claim 1 , wherein the depression has a concave shape. 
     
     
         3 . The container of  claim 2 , wherein the metal closure panel includes a button area deformable by the user to interact with the chemicals such that the chemicals are activated. 
     
     
         4 . The container of  claim 3 , further comprising a welded joint which joins the metal closure panel to the metal bottom can end. 
     
     
         5 . The container of  claim 3 , wherein the welded joint has the weld structure of one of a friction stir welded joint, an ultrasonic welded joint or a laser welded joint. 
     
     
         6 . The container of  claim 3 , wherein the metal closure panel is a metal foil panel joined to the metal bottom can end with an adhesive. 
     
     
         7 . The container of  claim 3 , wherein at least a portion of the metal side wall is tapered. 
     
     
         8 . The container of  claim 3 , wherein the double seam further seals the metal closure panel to the metal bottom can end. 
     
     
         9 . The container of  claim 3 , wherein the metal closure panel includes a rim which forms a friction fit with a periphery of the double seam, and further comprising a sealant disposed between the rim and the periphery. 
     
     
         10 . A temperature changing container comprising:
 a plurality of walls joined to form an enclosure which hermetically seals the contents of the enclosure within the walls, wherein one of the walls includes a depression extending into the contents of the enclosure;   chemicals which are formulated to change state and change the temperature of the container when activated; and   a closure panel joined to the enclosure to encapsulate the chemicals within the depression between the wall including the depression and the closure panel.   
     
     
         11 . The container of  claim 10 , wherein the depression has a concave shape. 
     
     
         12 . The container of  claim 11 , wherein the closure panel includes a button area deformable by the user to interact with the chemicals such that the chemicals are activated. 
     
     
         13 . The container of  claim 12 , further comprising a welded joint which joins the closure panel to the enclosure. 
     
     
         14 . The container of  claim 13 , wherein the welded joint has the weld structure of one of a friction stir welded joint, an ultrasonic welded joint or a laser welded joint. 
     
     
         15 . The container of  claim 10 , wherein the closure panel is a metal foil panel joined to the enclosure with an adhesive. 
     
     
         16 . The container of  claim 10 , wherein the enclosure and closure panel are formed from steel. 
     
     
         17 . The container of  claim 16 , wherein the chemicals increase the temperature of the container when activated. 
     
     
         18 . A self-heating container comprising:
 a cylindrical metal side wall defining an interior;   a metal bottom can end joined to the metal side wall to form an enclosure having an interior, the metal bottom can end including a depression extending into the interior;   a double-seam formed from the side wall and the metal bottom can end to hermetically join the side wall to the metal bottom can end to orient the depression to extend into the interior;   chemicals which are formulated to change temperature when activated; and   a metal closure panel joined to the metal bottom can end to create an enclosure for the chemicals hermetically separated by metal bottom can end from the interior.   
     
     
         19 . The container of  claim 18 , wherein the depression has a concave shape. 
     
     
         20 . The container of  claim 19 , wherein the metal closure panel includes a button area deformable by the user to interact with the chemicals such that the chemicals are activated. 
     
     
         21 . The container of  claim 20 , further comprising a welded joint which joins the closure panel to the metal bottom can end. 
     
     
         22 . The container of  claim 20 , wherein the welded joint has the weld structure of one of a friction stir welded joint, an ultrasonic welded joint or a laser welded joint. 
     
     
         23 . The container of  claim 20 , wherein the closure panel is a metal foil panel joined to the metal bottom can end with an adhesive. 
     
     
         24 . The container of  claim 20 , wherein at least a portion of the metal side wall is tapered. 
     
     
         25 . The container of  claim 20 , wherein the double seam further seals the closure panel to the metal bottom can end. 
     
     
         26 . The container of  claim 20 , wherein the closure panel includes a rim which forms a friction fit with a periphery of the double seam, and the container further includes a sealant disposed between the rim and the periphery. 
     
     
         27 . The container of  claim 20 , wherein the chemicals increase in temperature when activated.