Nozzle device for vacuum container

Abstract

A nozzle device for a vacuum container is provided. The nozzle device has a molded and flexible seat member with a cover member attached. The center of the cover member has convex section which will become a concave one when the container is vacuumed. As such, a user could easily tell whether the container is vacuumed or not. Additionally, the container could be further equipped with a ventilated inner layer to facilitate the vacuuming of the container.

1 . A nozzle device for a vacuum container comprising a molded and flexible seat member and a cover member attached to said seat member, wherein 
 said seat member is configured on a through hole at an appropriate location on said vacuum container; and the center of said cover member has a convex section which becomes a concave one when said vacuum container is vacuumed through which a user could tell whether the vacuum container is vacuumed.    
   
   
       2 . The nozzle device according to  claim 1 , wherein said vacuum container has a ventilated inner layer for facilitating the vacuuming of said vacuum container.  
   
   
       3 . The nozzle device according to  claim 1 , wherein said seat member is a planar disc with a protruding tubular section in the center; said cover member is attached to the top rim of said tubular section; a tubular air duct is configured inside said tubular section; the top end of said air duct has a slot opening on the end surface with two slope surfaces at the two sides of said slot opening.  
   
   
       4 . The nozzle device according to  claim 1 , wherein said vacuum container is made of a hard material and is one of the following objects: a bottle, a jar, and a pot.  
   
   
       5 . The nozzle device according to  claim 1 , wherein said convex section of said cover member is of an appropriate shape for providing visual clue about whether the vacuum container is vacuumed.  
   
   
       6 . A nozzle device according to  claim 1 , wherein said ventilated inner layer forms a bag of an appropriate shape inside said vacuum container.