Bottle cap

Abstract

A bottle closure device may be disclosed. The bottle closure device may be formed in such a manner as to provide a strong, liquid-tight seal of a bottle. The bottle closure device may include a capping portion and a tamper-evident tear away portion. The capping portion of the bottle closure may further include an inner neck portion configured to form a seal with an interior of a bottle neck.

What is claimed is: 
     
         1 . A bottle closure comprising:
 a capping portion having a top, sidewall, and inner neck portion, wherein the inner neck portion extends from an interior surface of the top of the cap portion, and wherein the inner neck portion is configured to fit within a bottle neck.   
     
     
         2 . The bottle closure of  claim 1 , further comprising at least one protrusion projecting outwardly from the inner neck portion such that the at least one protrusion interacts with an interior surface of a bottle neck. 
     
     
         3 . The bottle closure of  claim 2 , wherein the interaction between the inner neck protrusions and the bottle neck forms a substantially liquid-tight seal each time capping portion is placed on the bottle neck. 
     
     
         4 . The bottle closure of  claim 2 , wherein the at least one protrusion has an outer diameter greater than an inner diameter of a neck of a desired bottle. 
     
     
         5 . The bottle closure of  claim 2 , wherein the at least one protrusion is substantially flexible. 
     
     
         6 . The bottle closure of  claim 2 , wherein the at least one protrusion is substantially rigid. 
     
     
         7 . The bottle closure of  claim 1 , further comprising at least one ridge disposed on an interior surface of the sidewall of the capping portion, wherein the at least one ridge is configured to interact with an exterior surface of a bottle neck. 
     
     
         8 . The bottle closure of  claim 1 , further comprising a separable tear-away portion affixed to the capping portion by a fragile ring, wherein the tear-away portion is substantially an extension of the sidewall of the capping portion. 
     
     
         9 . The bottle closure of  claim 7 , wherein the tear-away portion further comprises a plurality of teeth configured to interact with an exterior surface of a bottle neck. 
     
     
         10 . The bottle closure of  claim 8 , wherein the tear-away portion is configured to remain on a bottle neck when the capping portion is removed. 
     
     
         11 . The bottle closure of  claim 1 , further comprising one or more grip disposed on an exterior surface.