Dual sealing closure

Abstract

The invention relates to a dual sealing closure for use with an associated container having a neck. The closure comprises two sealing arrangements for forming a dual seal between the closure and the neck of the associated container. The first sealing arrangement forms a first seal with the neck of the container at a first contact point and a second sealing arrangement forms a second seal with the neck of the container at a second contact point.

What is claimed is:  
     
         1 . A dual sealing closure for use with an associated container having a neck comprising: 
 a closure including two sealing arrangements for forming a dual seal between the closure and the neck of the associated container, wherein a first sealing arrangement forms a first seal with the neck of the container at a first contact point and a second sealing arrangement forms a second seal with the neck of the container at a second contact point.    
     
     
         2 . The dual sealing closure as defined in  claim 1 , wherein the first sealing arrangement includes a V-shaped section, the V-shaped section including a substantially straight segment and a concave segment, the concave segment including a contacting sealing surface, wherein the contacting surface forms a first seal with the neck of the associated container at a first contact point.  
     
     
         3 . The dual sealing closure as defined in  claim 2 , wherein the closure further includes a top wall connected to a peripheral surface by the V-shaped section, wherein the peripheral surface is substantially parallel to the top wall.  
     
     
         4 . The dual sealing closure as defined by  claim 1 , wherein the second sealing arrangement includes a V-shaped section, the V-shaped section having a substantially straight segment and a concave segment, the concave segment including a contacting sealing surface, wherein a nip is formed along the contacting surface, the nip forming a seal with the neck of the associated container at a second contact point.  
     
     
         5 . The dual sealing closure as defined by  claim 1 , wherein said closure has a top wall connected to a flat peripheral surface by a V-shaped section so that the peripheral surface is substantially parallel to the top wall; 
 the first sealing arrangement of said closure including the V-shaped section, the V-shaped section including a straight segment and a concave segment, the concave segment including a contacting sealing surface, wherein an upper portion of the contacting surface forms a first seal with the neck of the associated container at a first contact point; and    the second sealing arrangement including a nip formed along a lower portion of the contacting surface, the nip forming a second seal with the neck of the associated container at a second contact point.    
     
     
         6 . The dual sealing closure as defined by  claim 5 , wherein the closure is made from polypropylene.  
     
     
         7 . The dual sealing closure as defined by  claim 5 , wherein the closure is made from polyethylene.  
     
     
         8 . The dual sealing closure as defined by  claim 5 , wherein the closure has a thickness of about 0.025 mm to about 0.75 mm.  
     
     
         9 . The dual sealing closure as defined by  claim 6 , wherein the closure has a thickness of about 0.05 mm.  
     
     
         10 . The dual sealing closure as defined by  claim 7 , wherein the closure has a thickness of about 0.05 mm.  
     
     
         11 . A dual sealing closure for use with an associated container with a neck comprising: 
 a closure including two sealing arrangements, wherein 
 said closure has a top wall connected to a flat peripheral surface by a V-shaped section so that the peripheral surface is substantially parallel to the top wall;  
 the first sealing arrangement of said closure includes the V-shaped section, the V-shaped section having a straight segment and a concave segment, the concave segment including a contacting sealing surface, wherein the contacting surface forms a first seal with the neck of the associated container at a first contact point; and  
 the second sealing arrangement including a nip formed along the contacting surface below the first contact point, the nip forming a second seal with the neck of the associated container at a second contact point.  
   
     
     
         12 . The dual sealing closure as defined by  claim 11 , wherein the closure includes at least one fastening arrangement to fasten the closure to the neck.  
     
     
         13 . The dual sealing closure as defined by  claim 12 , wherein the closure further includes a ribbed annular skirt, the ribbed annular skirt depending downwardly from an outer edge of the peripheral surface, wherein the ribbed annular skirt includes at least one annular shoulder protruding inwardly from an interior surface of the ribbed skirt, 
 wherein a first fastening arrangement includes the at least one annular shoulder so that the at least one annular shoulder cooperates with the associated container.    
     
     
         14 . The dual sealing closure as defined by  claim 13 , wherein the ribbed annular skirt includes upper and lower inwardly protruding annular shoulders, both shoulders protruding from the interior surface of the ribbed skirt, 
 wherein the first and second fastening arrangements include the upper and lower inwardly protruding shoulders so that the upper and lower shoulders cooperate with the associated container.    
     
     
         15 . The dual sealing closure as defined by  claim 14  wherein the neck of the associated container includes upper and lower annular rings so that the upper and lower annular shoulders of the first and second fastening arrangements interact with the upper and lower annular rings of the neck of the associated container.  
     
     
         16 . The dual sealing closure as defined by  claim 13 , wherein the closure further includes a horizontal frangible wall extending from a lower end of the ribbed skirt so that a removable strip depends downwardly from the frangible wall.  
     
     
         17 . The dual sealing closure as defined by  claim 16 , wherein the closure further includes a top wall connected to the peripheral surface by the V-shaped section so that the peripheral surface surrounds the top wall and is substantially parallel to the top wall.  
     
     
         18 . The dual sealing closure as defined by  claim 17  wherein the peripheral surface is vertically spaced with respect to the top wall, and the removable strip includes a pull away tab formed thereto.  
     
     
         19 . The dual sealing closure as defined by  claim 12 , wherein the closure includes a ribbed annular skirt, the ribbed annular skirt depending downwardly from an outer edge of the peripheral surface, wherein internal grooves are formed on an interior surface of the annular skirt, 
 wherein one fastening arrangement includes the internally formed grooves, the internally formed grooves cooperating with the neck of the associated container.    
     
     
         20 . The dual sealing closure as defined by  claim 11 , wherein the closure is configured so that the first contact point is positioned at an inner point of a curved elbow portion of the neck of the associated container and the second contact point is positioned at a point below the inner point of the curved elbow portion of the neck.