Double-walled drinking vessel

Abstract

A double-walled drinking vessel includes a transparent inner vessel having an outer wall surface formed into a plurality of circumferentially arranged angles, so that these angles naturally create a three-dimensional, multi-layered, shinny, and diamond-like relief in the drinking vessel when seeing from outside of the drinking vessel, making the double-walled drinking vessel novel and unique.

1 . A double-walled drinking vessel, comprising an outer vessel, a bottom cover, and an inner vessel; said inner vessel having an upper open end and a lower closed end, said upper open end of said inner vessel having an inner diameter larger than that of said lower closed end, and close to that of an upper rim of said outer vessel; and an outer wall surface of said inner vessel upward extended from said lower closed end to a point slightly below said upper open end being formed into a plurality of circumferentially arranged angles like a polygon.  
   
   
       2 . The double-walled drinking vessel as claimed in  claim 1 , wherein an area of said outer wall surface of said inner vessel between any two of said angles that are adjacent to each other is a curved surface.  
   
   
       3 . The double-walled drinking vessel as claimed in  claim 1 , wherein an area of said outer wall surface of said inner vessel between any two of said angles that are adjacent to each other is a straight surface.  
   
   
       4 . The double-walled drinking vessel as claimed in claim  1 , wherein said circumferentially arranged angles formed on said outer wall surface of said inner vessel have vertexes located at a common circle.  
   
   
       5 . The double-walled drinking vessel as claimed in  claim 1 , wherein said continuous angles formed on said outer wall surface of said inner vessel have vertexes that are not located at a common circle.