Drinking vessel cover with air check valve

Abstract

A drinking vessel includes a bottle having a chamber for receiving a liquid, and a mouth communicating with the chamber of the bottle, a cover device includes a cover member for detachably attaching to the mouth, the cover member includes a port having a passage formed in the port and communicating with the chamber of the bottle, a plug is attached to a lower portion of the port and includes an orifice communicating with the passage of the port and the chamber of the bottle, a valve member is engaged in the passage of the port, and the port includes a rib for anchoring the valve member in the passage of the port and for preventing the valve member from being disengaged from the cover member.

I claim: 
     
         1 . A drinking vessel comprising:
 a bottle including a chamber formed therein for receiving a liquid, and a mouth communicating with said chamber of said bottle;   a cover device including a cover member for engaging with said mouth and for detachably attaching to said mouth, said cover member including a port having a passage formed in said port and communicating with said chamber of said bottle, a plug attached to a lower portion of said port, said plug including an orifice formed therein and communicating with said passage of said port and said chamber of said bottle;   a valve member engaged in said passage of said port; and   said cover device including a rib provided at an upper portion of said port for anchoring and retaining said valve member in said passage of said port and for preventing said valve member from being disengaged and removed from said cover member.   
     
     
         2 . The drinking vessel as claimed in  claim 1 , wherein said cover member includes an inner thread provided therein for threading and engaging with said mouth. 
     
     
         3 . The drinking vessel as claimed in  claim 1 , wherein said plug includes a valve seat formed therein for receiving and engaging with said valve member. 
     
     
         4 . The drinking vessel as claimed in  claim 1 , wherein said cover member includes at least one pathway formed in said upper portion of said port. 
     
     
         5 . The drinking vessel as claimed in  claim 1 , wherein said cover member includes a projection extended from said rib for selectively engaging with said valve member.