Leak-proof drinking cup and lid assembly

Abstract

A leak-proof drinking cup and lid assembly is taught which effectively prevents any liquid from escaping the interior chamber of the cup. The leak-proof drinking cup and lid assembly comprises a cup and a lid, where the lid is adapted to seal the cup by screwing onto the cup and contacting at least two distinct radial sealing areas on the cup. The leak-proof cup and lid assembly allows for vigorous shaking and mixing of the cup's contents in addition to transportation of the contents without leaking. A preferred embodiment further incorporates a blending disk to improve mixing of the contents.

1 . A leak-proof drinking cup and lid assembly comprising:
 a cup; and   a lid adapted to seal the cup by screwing onto said cup and contacting at least two distinct radial sealing areas on the cup.   
   
   
       2 . The leak-proof drinking cup and lid assembly of  claim 1 , wherein said drinking cup and lid assembly is manufactured from a plastic resin. 
   
   
       3 . The leak-proof drinking cup and lid assembly of  claim 1 , wherein said lid is adapted to seal the cup by contacting at least three distinct radial sealing areas on the cup. 
   
   
       4 . The leak-proof drinking cup and lid assembly of  claim 1 , wherein said cup and lid assembly is used as a shaker to mix liquids by shaking the contents. 
   
   
       5 . The leak-proof drinking cup and lid assembly of  claim 1 , wherein said cup and lid assembly is used to transport liquids. 
   
   
       6 . The leak-proof drinking cup and lid assembly of  claim 1 , wherein at least two distinct radial sealing areas on the cup are selected from the group consisting of:
 a top edge, an inner edge and an outside edge.   
   
   
       7 . The leak-proof drinking cup and lid assembly of  claim 1 , further comprising a blending disk. 
   
   
       8 . A lid for sealing a cup which is attachable to said cup by screwing onto radial threads on said cup, wherein said lid contacts at least two distinct radial sealing areas on the cup and prevents liquids in said cup from leaking out of said cup. 
   
   
       9 . The lid of  claim 8 , wherein at least two distinct radial sealing areas on the cup are selected from the group consisting of: a top edge, an inner edge and an outside edge. 
   
   
       10 . The lid of  claim 8 , wherein the lid and cup are manufactured from a plastic resin. 
   
   
       11 . The lid of  claim 8 , wherein the lid contacts at least three distinct radial sealing areas on the cup and prevents liquids in said cup from leaking out of said cup. 
   
   
       12 . The lid of  claim 8 , wherein the lid and cup are used as a shaker to mix liquids by shaking the contents. 
   
   
       13 . The lid of  claim 8 , wherein the lid and cup are used to transport liquids. 
   
   
       14 . A leak-proof drinking cup and lid assembly comprising:
 a cup;   a lid adapted to seal the cup by screwing onto said cup and contacting at least two distinct radial sealing areas on the cup;   wherein at least two distinct radial sealing areas on the cup are selected from the group consisting of: a top edge, an inner edge and an outside edge.   
   
   
       15 . The leak proof drinking cup and lid assembly of  claim 14  further comprising a blending disk. 
   
   
       16 . The leak proof drinking cup and lid assembly of  claim 15  wherein the blending disk comprises an insert containing a mesh grid. 
   
   
       17 . The leak proof drinking cup and lid assembly of  claim 16  wherein the cup contains an internal ledge for positioning the blending disk.