Valve disk and container produced therewith

Abstract

The valve disk is intended for use with containers that are subjected to gas pressure, for example, self-cooling beverage cans and spray cans. The valve disk has an annular recess ( 14 ), which is radially delimited on the exterior by a circumferential wall ( 16 ) with a fastening edge and which is radially delimited on the interior by a downwardly enlarging dome ( 18 ) provided with an opening ( 20 ). A valve can be inserted into said dome. In order to enable higher internal pressures' of the container, the invention provides that the wall of the dome ( 18 ) is provided, in the enlarging area ( 22 ), with beads ( 30 ) that are arranged in the circumferential direction of the wall of the dome ( 18 ) in an interspaced manner.

1 . (Original) A valve plate for containers acted upon by gas pressure, such as self-chilling beverage cans and spray cans, having an annular indentation ( 14 ) which is defined radially outward by a circumferential wall ( 16 ) with a fastening edge ( 24 ) and radially inward by a dome ( 18 ) provided axially outward with an opening, into which dome a valve can be inserted and which dome is adjoining a region that widens radially axially inward, characterized in that the widening region ( 22 ) is provided with beads ( 30 ), extending in the circumferential direction with spacing between them, which extend essentially radially across the widening region ( 22 ).  
     
     
         2 . (Original) A valve plate for containers acted upon by gas pressure, such as self-chilling beverage cans and spray cans, having an annular indentation ( 14 ) which is defined radially outward by a circumferential wall ( 16 ) with a fastening edge ( 24 ) and radially inward by a dome ( 18 ) provided axially outward with an opening, into which dome a valve can be inserted and which dome is adjoining a region ( 22 ) that widens radially axially inward, characterized in that the widening region ( 22 ) in axial section forms a mean angle of at most 450 and preferably at most 350 with the central longitudinal axis ( 28 ) of the valve plate.  
     
     
         3 . (Original) The valve plate of  claim 1 , characterized in that the widening region ( 22 ) in axial section between the beads ( 30 ) forms a mean angle of at most 45° and preferably at most 35° with the central longitudinal axis ( 28 ) of the valve plate.  
     
     
         4 .(Currently Amended) The valve plate of one of claims  1 - 3 ,characterized in that the widening region ( 22 ), optionally except for the beads ( 30 ), has a conical shape.  
     
     
         5 . (Currently Amended) The valve plate of one of claims  1 - 4 , characterized in that it comprises tinplate or stainless steel with a material thickness of approximately 0.25 to 0.35 mm, with or without a plastic coating, and the transition between the circumferential wall ( 16 ) and the widening region ( 22 ) in cross section is formed by an inner radius of at most 1.0 to 1.3 mm, in accordance with the material thickness.  
     
     
         6 . (Currently Amended) The valve plate of one of claims  1  and  3 - 5 , characterized in that the beads ( 30 ) bulge radially outward and have a depth of approximately 0.4 to 1.8 mm.  
     
     
         7 .(Currently Amended) The valve plate of one of claims  1  and  3 - 6 , characterized in that the beads ( 30 ), in a cross section located on a circumferential arc, are shaped in stepped fashion at their edges and over their surface are shaped with a uniform depth.  
     
     
         8 . (Currently Amended) The valve plate of one of claims  1  and  3 - 6 , characterized in that the beads ( 30 ) are increasingly indented toward their middle in a cross section located on a circumferential arc.  
     
     
         9 . (Currently Amended) The valve plate of one of claims  1  and  3 - 8 , characterized in that the side edges of the beads ( 30 ) are located on radial rays.  
     
     
         10 . (Currently Amended) The valve plate of one of claims  1  and  3 - 9 , characterized in that each bead ( 30 ) extends radially essentially across the entire widening region ( 22 ).  
     
     
         11 . (Currently Amended) The valve plate of one of claims  1 - 10 , characterized in that by deformation of the dome ( 18 ), it is tightly joined to a valve inserted into the dome.  
     
     
         12 . (Currently Amended) An empty or filled container having a valve plate of one of claims  1 - 11 .  
     
     
         13 . (New) The valve plate of  claim 2 ,characterized in that the widening region ( 22 ), optionally except for the beads ( 30 ), has a conical shape.  
     
     
         14 . (New) The valve plate of  claim 2 , characterized in that it comprises tinplate or stainless steel with a material thickness of approximately 0.25 to 0.35 mm, with or without a plastic coating, and the transition between the circumferential wall ( 16 ) and the widening region ( 22 ) in cross section is formed by an inner radius of at most 1.0 to 1.3 mm, in accordance with the material thickness.  
     
     
         15 . (New) The valve plate of claim  4 , characterized in that the beads ( 30 ) bulge radially outward and have a depth of approximately 0.4 to 1.8 mm.  
     
     
         16 .(New) The valve plate of claim  4 , characterized in that the beads ( 30 ), in a cross section located on a circumferential arc, are shaped in stepped fashion at their edges and over their surface are shaped with a uniform depth.  
     
     
         17 . (New) The valve plate of claim  4 , characterized in that the beads ( 30 ) are increasingly indented toward their middle in a cross section located on a circumferential arc.  
     
     
         18 . (New) The valve plate of claim  4 , characterized in that the side edges of the beads ( 30 ) are located on radial rays.  
     
     
         19 . (New) The valve plate of claim  4 , characterized in that each bead ( 30 ) extends radially essentially across the entire widening region ( 22 ).  
     
     
         20 . (New) The valve plate of  claim 2 , characterized in that by deformation of the dome ( 18 ), it is tightly joined to a valve inserted into the dome.