Thermal and cold insulation bottle structure

Abstract

A thermal and cold insulation bottle structure is disclosed herein, comprising: a bottle body having an integrally formed stainless steel double wall, an opening, an interior space, and a base portion, wherein the opening having an inner wall disposed with a female thread; a lid having a male thread corresponding to the female thread to screw on the opening of the bottle body; and a removable bottom cover having an expandable plug, a screw secured to the center of the expandable plug, a nut engaged with the screw, and a lever connected to the nut, so as to allow the removable bottom cover to be accommodated in the base portion of the interior space of the bottle body.

What is claimed is: 
     
         1 . A thermal and cold insulation bottle structure, comprising:
 a bottle body having an integrally formed stainless steel double wall, an opening, an interior space, and a base portion, wherein the opening having an inner wall disposed with a female thread;   a lid having a male thread corresponding to the female thread to screw on the opening of the bottle body; and   a removable bottom cover having an expandable plug, a screw secured to the center of the expandable plug, a nut engaged with the screw, and a lever connected to the nut, so as to allow the removable bottom cover to be accommodated in the base portion of the interior space of the bottle body.   
     
     
         2 . As the thermal and cold insulation bottle structure claimed in  claim 1 , wherein the removable bottom cover contacts a bottom of a beverage bottle accommodated in the interior space, pushes the beverage bottle toward the opening of the bottle body by pulling the lever, and further positions the beverage bottle in the interior space by pulling back the lever. 
     
     
         3 . As the thermal and cold insulation bottle structure claimed in  claim 1 , wherein the expandable plug consists of an upper cover, an O-ring and a lower cover. 
     
     
         4 . As the thermal and cold insulation bottle structure claimed in  claim 3 , wherein the upper cover and the lower cover are separated from each other and forming a gap for accommodating the O-ring to allow the removable bottom cover to move in the interior space of the bottle body as the lever is pulled. 
     
     
         5 . As the thermal and cold insulation bottle structure claimed in  claim 3 , wherein the upper cover is tightly compressed with the lower cover resulting in an outward protrusion of the O-ring to allow the removable bottom cover to position the beverage bottle in the interior space of the bottle body as the lever is pulled back. 
     
     
         6 . As the thermal and cold insulation bottle structure claimed in  claim 1 , wherein the removable bottom cover is made of a plastic material. 
     
     
         7 . As the thermal and cold insulation bottle structure claimed in  claim 1 , wherein the lid is made of a plastic material. 
     
     
         8 . As the thermal and cold insulation bottle structure claimed in  claim 7 , wherein the male thread of the lid is made of a flexible plastic material.