Closure cap for infusion or transfusion bottles

Abstract

Closure (V) for infusion or transfusion bottles, having a rubber-like sealing part ( 1 ) adapted to the bottle neck ( 3 ), the closure cap ( 7 ) being formed for under-engagement, in which it grips beneath a bead ( 5 ), on the bottle neck ( 3 ), and, furthermore, an overcap ( 8 ) being provided for securing the closure cap ( 7 ) in a positively locking manner on the bottle neck ( 3 ), wherein the sealing part ( 1 ) is arrested on the closure cap ( 7 ), wherein the sealing part ( 1 ) is exposed, in the direction of the exterior of the closure cap ( 7 ), in a piercing region ( 17 ), and the overcap ( 8 ), which also grips over the piercing region ( 17 ), is securable on the closure cap ( 7 ) in a first, reversible latching position (I) at an axial spacing (y) from the piercing region ( 17 ).

1 - 17  (cancelled)  
     
     
         18 . Closure (V) for infusion or transfusion bottles, having a rubber-like sealing part ( 1 ) adapted to a bottle neck ( 3 ), a closure cap ( 7 ) being formed for under-engagement, in which it grips beneath a bead ( 5 ), on the bottle neck ( 3 ), and, furthermore, an overcap ( 8 ) being provided for securing the closure cap ( 7 ) in a positively/form locking manner on the bottle neck ( 3 ), wherein the sealing part ( 1 ) is arrested on the closure cap ( 7 ), wherein the sealing part ( 1 ) is exposed, in direction of an exterior of the closure cap ( 7 ), in a piercing region ( 17 ), and the overcap ( 8 ), which also grips over the piercing region ( 17 ), is securable on the closure cap ( 7 ) in a first, reversible latching position (I) at an axial spacing (y) from the piercing region ( 17 ).  
     
     
         19 . Closure according to  claim 18 , wherein the closure cap ( 7 ) and the sealing part ( 1 ) are produced by two-component injection molding.  
     
     
         20 . Closure according to  claim 19 , wherein the sealing part ( 1 ), on account of shrinkage, is positioned under elastic prestressing against the closure cap ( 7 ).  
     
     
         21 . Closure according to  claim 18 , wherein the closure cap ( 7 ) has under-engagement tongues ( 14 ) which are formed in a manner of circle segments in circumferential direction, are provided with a latching bead ( 15 ) and have outer latching recesses ( 27 ) for latching the overcap ( 8 ) which has corresponding latching protrusions ( 28 ) on a cylinder wall ( 25 ).  
     
     
         22 . Closure according to  claim 21 , wherein the cylinder wall ( 25 ) of the overcap ( 8 ), for engaging over the closure cap ( 7 ) with latching action, has, at its lower, free end, a latching nose ( 24 ) which projects beyond the latching protrusions ( 28 ) of the cylinder wall ( 25 ).  
     
     
         23 . Closure according to  claim 22 , wherein the closure cap ( 7 ), associated with a closure-cap top ( 12 ), has a latching recess ( 23 ) for reversible latching with the latching nose ( 24 ) of the overcap ( 8 ).  
     
     
         24 . Closure according to  claim 23 , wherein the latching recess ( 23 ) is disposed in a cross-section beneath the closure-cap top ( 12 ).  
     
     
         25 . Closure according to  claim 18 , wherein the overcap ( 8 ) has an overcap top ( 19 ) which grips over the piercing region ( 17 ).  
     
     
         26 . Closure according to  claim 25 , wherein formed by a weakening line ( 29 ) in the overcap top ( 19 ), is a tear-open tab ( 22 ), which extends to outer periphery of the overcap top ( 19 ).  
     
     
         27 . Closure according to  claim 26 , wherein two diametrically opposite tear-open tabs ( 22 ), each extending as far as a central region of the overcap top ( 19 ), are formed.  
     
     
         28 . Closure according to  claim 18 , wherein a tear-open tab ( 22 ) is associated in each case with a piercing region ( 17 ), which is enclosed around the periphery by a closure-cap top ( 12 ).  
     
     
         29 . Closure according to  claim 18 , wherein the overcap ( 8 ) is secured against rotation on the closure cap ( 7 ).  
     
     
         30 . Closure according to  claim 29 , wherein the securing against rotation is achieved by vertical ribs ( 31 ) which are formed on an inside of a cylinder wall ( 25 ) of the overcap ( 8 ) and engage in corresponding vertical grooves ( 32 ) of the closure cap ( 7 ).  
     
     
         31 . Closure according to  claim 30 , wherein a vertical groove ( 32 ) is also formed on the closure cap ( 7 ) by a separating region between two circle-segment-like under-engagement tongues ( 14 ).  
     
     
         32 . Closure according to  claim 31 , wherein the vertical groove ( 32 ) continues to an upper side of a closure-cap top ( 12 ), leaving behind a residual portion ( 33 ) of an annular wall ( 13 ) of the closure cap ( 7 ).  
     
     
         33 . Closure according to  claim 18 , wherein there is a slightly frustoconical transition of a wall of the closure cap ( 7 ) in a direction of a closure-cap top ( 12 ).  
     
     
         34 . Closure according to  claim 18 , wherein the sealing part ( 1 ) terminates at a radial spacing (z) from an inside ( 36 ) of an annular wall ( 13 ) of the closure cap ( 7 ).  
     
     
         35 . Closure according to  claim 21 , wherein a securing against rotation is achieved by vertical ribs ( 31 ) which are formed on an inside of the cylinder wall ( 25 ) of the overcap ( 8 ) and engage in corresponding vertical grooves ( 32 ) of the closure cap ( 7 ).  
     
     
         36 . Closure according to  claim 21 , wherein a vertical groove ( 32 ) is also formed on the closure cap ( 7 ) by a separating region between two circle-segment-like under-engagement tongues ( 14 ).