System for maintaining desired heated or cooled beverage for extended duration

Abstract

A system for heating or cooling a liquid beverage and maintaining desired range of drinking temperature is described by utilizing a container having a concave shape for the body of the container, a converging neck portion with cylindrical chimney with threaded sleeve that receives a threaded closure for closing and sealing the cap. The type of threads or closing method in not novel nor claimed as part of the invention, but rather the combination of thinness between the front side of the container and rear side of the container, the height and width aspect ratio, the concave shape in conjunction with a complementing-shaped protective insulating and heat reflecting sleeve, and temporary heat source or cooling source. The shape of the container allows the liquid contents of the container to be rapidly heated or cooled, with the heated or cooled state retained for an optimal duration by application of the thermally insulative and thermally reflective sleeve, which includes as a benefit of the shape of the container and sleeve, a designed-in potential space for application of a precisely sized temporary heat source or cooling source which maintains the temperature of the contents of the container in a desired heated or cooled state.

The invention claimed is: 
     
         1 . A thin wall metal, glass or plastic container comprising:
 a. a concave or ovoid shaped body where the width of the container is roughly  4  times the thickness of the container, which gives the container a flask appearance.   b. a chimney or neck that transitions the concave “flask” shape to a standard circular opening, which can accommodate a commercially available re-sealable cap.   
     
     
         2 . A process for heating the contents of the container in a small electric appliance. The manner of heating the present invention in any appliance is intended to be covered by this application. 
     
     
         3 . An insulating protective sleeve comprising:
 a. A smooth exterior surface, a corrugated paper middle section, and a smooth interior surface.   b. the inner portion of the sleeve in addition contains a not just thermally insulative but thermally reflective surface which directs heat from a heat source back into the container.   c. the sleeve contains a bottom which keeps a commercially available disposable heat source or cooling source in the proper position and prevents it from sliding out the bottom of the assembled container and protective sleeve, as well as retaining heat that might be lost through the bottom of the container.   
     
     
         4 . A process for maintaining the temperature of the contents of the container by application of the combination of container shape, thermally protective, insulative and reflective sleeve, and commercially available disposable heat source.