Heat Retention Device for Beverage Container

Abstract

A device for covering a beverage container to retain heat comprising a cap, a base, and an arm connecting the cap and the base. The arm is configured to enable the cap to slide away from the base to an open position and slide toward the base to a closed position over the open beverage container. In a preferred embodiment, a mug is configured in size and shape to be mated with the holder to limit heat loss and to increase stability.

I claim: 
     
         1 . A device for closing a beverage container to retain heat, the device comprising:
 a) a cap;   b) a base;   c) an arm connecting the cap and the base, wherein the arm is configured to enable the cap to slide away from the base to an open position and slide toward the base to a closed position.   
     
     
         2 . The device of  claim 1  wherein the cap can be pushed away from the base by inserting a rim of a beverage container under the cap. 
     
     
         3 . The device of  claim 1  wherein when the distance between the cap and base in the open position is greater than the height of a beverage container. 
     
     
         4 . The device of  claim 1  wherein when the beverage container rests on the base, the cap rests on the beverage container. 
     
     
         5 . The device of  claim 1  wherein the cap and base are substantially hollow. 
     
     
         6 . A device for closing a beverage container to retain heat, the device comprising:
 a) a cap having a down arm extending therefrom;   b) a base having an up arm extending therefrom, wherein the down arm and up arm are mated to enable them to slide relative to each other from a closed position to an open position.   
     
     
         7 . The device of  claim 6  wherein the cap can be pushed away from the base by inserting a rim of a beverage container under the cap. 
     
     
         8 . The device of  claim 6  wherein when the distance between the cap and base in the open position is greater than the height of a beverage container. 
     
     
         9 . The device of  claim 6  wherein when the beverage container rests on the base, the cap rests on the beverage container. 
     
     
         10 . A device for covering a mug to retain heat of the beverage therein, the mug having a continuous sidewall forming an internal chamber wherein the top of the chamber is a rim, a foot connected to the continuous side wall forms the bottom of the mug; and a handle is connected to the side wall, the device comprising:
 a) a circular cap comprising:
 i. a top surface; 
 ii. a rim surface opposite the top surface; and 
 iii. a down arm extending from the cap toward a base, wherein the down arm has a width and the width is less than half the circumference of the cap; 
   b) a circular base comprising:
 i. a coaster surface; 
 ii. a resting surface opposite the coaster surface; and 
 iii. an up arm extending from the base toward the cap, wherein the up arm and the down arm are mated to enable them to slide relative to each other. 
   
     
     
         11 . The device of  claim 10  wherein:
 a) the rim surface further comprises a cap disk extending below the rim surface which is sized to fit inside the rim of the mug; and 
 b) the coaster surface further comprises a base disk extending above the coaster surface which is sized to fit inside the foot of the mug. 
 
     
     
         12 . The device of  claim 11  wherein the bottom of the mug further comprises an underside cavity of the mug and the base disk fits inside the cavity. 
     
     
         13 . The device of  claim 10  wherein:
 a) the rim surface further comprises a circular cap indentation indented towards the rim surface which is sized to fit around the rim of the mug; and 
 b) the coaster surface further comprises a circular base indentation indented towards the resting surface which is sized to fit around the foot of the mug. 
 
     
     
         14 . The device of  claim 10  wherein the cap is substantially hollow. 
     
     
         15 . The device of  claim 10  wherein the base is solid. 
     
     
         16 . The device of  claim 10  wherein the up arm comprises a finger that is configured to slide within a hollow portion of the down arm. 
     
     
         17 . The device of  claim 10  wherein the down arm comprises a finger that is configured to slide within a hollow portion of the up arm. 
     
     
         18 . The device of  claim 10  wherein the up arm slides in the down arm. 
     
     
         19 . The device of  claim 10  wherein the down arm slides in the up arm. 
     
     
         20 . The device of  claim 10  wherein the resting surface is non-skid.