Bimaterial thermally insulated container

Abstract

The claimed invention relates to bi-material dual wall thermally insulated container. The outer wall of the dual wall insulated container is comprised of plastic and can be a decorated plastic product. The inner container is comprised of stainless steel. The inner container is fixed to the outer container creating a gap between the inner and the outer containers.

What is claimed is: 
     
         1 . A dual wall cup assembly having an open end comprising:
 a plastic frustoconical shaped outer cup comprising an outer cup side wall, an upper open end further comprising a lip extending circumferentially outwardly from the upper open end and a closed smaller end sealed by a bottom wall;   a stainless steel frustoconical shaped inner cup comprising an inner cup side wall, an upper open end and a closed smaller end sealed by a bottom wall;   the size of the inner cup and the angle of the inner cup wall are configured to be receivable within the outer cup to create a gap between an inner surface of the side wall of the outer cup and an outer surface of the side wall of the inner cup and the inner cup side wall is slightly taller than the height of the outer cup side when the inner cup is received within the outer cup; and   the slightly taller inner cup is curled over the lip of the upper open end of outer cup such that the outer cup and the inner cup are secured together by the curl of the inner cup over the outer cup.   
     
     
         2 . The dual wall cup assembly of  claim 1  wherein the plastic frustoconical shaped outer cup is comprised of injection molded polypropylene. 
     
     
         3 . The dual wall cup assembly of  claim 1  wherein the gap between the inner surface of the side wall of the outer cup and an outer surface of the side wall of the inner cup is relatively uniform. 
     
     
         4 . The dual wall cup assembly of  claim 1  further comprising a gasket situated below the lip of the upper open end of the outer cup operable to seal the gap between the inner cup and the outer cup when the inner cup is bent over the lid of the upper open end of the outer cup. 
     
     
         5 . The dual wall cup assembly of  claim 1  further comprising an adhesive sued to secure the outer cup to the inner cup. 
     
     
         6 . The dual wall cup assembly of  claim 1  further comprising a cover. 
     
     
         7 . The dual wall cup assembly of  claim 6  wherein the upper portion of the interior cup is threaded and the cover further comprises complimentary threads such that the cover is threadably securable to the cup. 
     
     
         8 . The dual wall assembly of  claim 1  further comprising insulating batting situated the inner cup and the outer cup. 
     
     
         9 . The dual wall assembly of  claim 1