Cap Assembly

Abstract

A cap assembly includes a cap pivotally connected to a lid between a closing position and an opening position. The lid includes a collar for engagement with an open end of a container, a disc formed on the collar, a chamber in the collar and the disc, and a mouthpiece extending from the disc and including an outlet in communication with the chamber. The cap includes a buckle for engagement with the lid to keep the cap in the closing position. The cap covers the mouthpiece and there is a space between the cap and the disc of the lid when the cap is in the closing position. The cap is automatically pivoted into the opening position once the buckle is pivoted and disengaged from the lid. The cap is away from the disc of the lid to release the mouthpiece when the lid is in the opening position.

1 . A cap assembly comprising:
 a lid comprising a collar for engagement with an open end of a container for beverage, a disc formed on the collar, a chamber in the collar and the disc, and a mouthpiece extending from the disc and comprising an outlet in communication with the chamber;   a cap pivotally connected to the lid between a closing position and an opening position, wherein the cap is connected to the lid at an end and formed with a buckle at another end, the buckle can be engaged with the lid to keep the cap in the closing position;   wherein the cap covers the mouthpiece and there is a space between the cap and the disc of the lid when the cap is in the closing position;   wherein the cap can be pivoted into the opening position once the buckle is pivoted and disengaged from the lid; and   wherein the cap is away from the disc of the lid to uncover the mouthpiece as the lid is in the opening position.   
     
     
         2 . The cap assembly according to  claim 1 , further comprising a spring arranged between the cap and the lid to automatically pivot the cap relative to the lid into the opening position once the buckle is disengaged from the lid. 
     
     
         3 . The cap assembly according to  claim 1  or  2 , wherein the buckle is engaged with the mouthpiece as the cap is in the closing position. 
     
     
         4 . The cap assembly according to  claim 3 , wherein the mouthpiece comprises a protrusion formed thereon, and the buckle comprises a recess for receiving the protrusion to keep the cap in the closing position relative to the lid. 
     
     
         5 . The cap assembly according to  claim 3 , wherein the buckle is made with a width larger than that of the mouthpiece. 
     
     
         6 . The cap assembly according to  claim 3 , wherein the buckle comprises at least one slit. 
     
     
         7 . The cap assembly according to  claim 3 , wherein the cap comprises a lever and at least one rib formed on a side of the lever, wherein the buckle and the lever are made one. 
     
     
         8 . The cap assembly according to  claim 7 , wherein the cap further comprises a ring for wrapping the mouthpiece. 
     
     
         9 . The cap assembly according to  claim 3 , wherein the disc of the lid comprises an aperture in communication with the chamber, and the cap comprises a plug for insertion in the aperture.