Cap for Containers

Abstract

A cap comprises a cup body with which a tamper-evident ring is associated delimited by a side wall provided with a connecting zone with which a retaining arrangement is connected suitable for engaging with a collar of a container, said side wall comprising a wall portion that projects towards the outside of said tamper-evident ring, such as to enable said connecting zone to expand radially whilst said cap is applied to said container; a cap comprises a cup body with which a first edge of a tamper-evident ring is associated, said tamper-evident ring comprising a connecting zone from which a flap arrangement extends suitable for engaging with a collar of a container and a second edge opposite said first edge, said second edge being joined to said connecting zone by a surface tilted towards the inside of said cup body.

1 - 40 . (canceled)  
   
   
       41 . Cap comprising a cup body with which a tamper-evident ring is associated, said tamper-evident ring being delimited by a side wall provided with a connecting zone to which a retaining arrangement is connected for engaging with a collar made on a neck of a container, said side wall comprising a wall portion defining an initial dimension and having an inner surface and an outer surface both projecting outwardly, said wall portion having a thickness so as to expand radially and increase said initial dimension when said connecting zone passes on said collar during screwing of said cap on said neck and return back to said initial dimension when said cap is completely screwed on said neck.  
   
   
       42 . Cap according to  claim 41 , wherein said wall portion has a substantially frustum conical shape.  
   
   
       43 . Cap according to  claim 41 , wherein said wall portion is provided with a shape that is cambered towards the outside of said tamper-evident ring.  
   
   
       44 . Cap according to  claim 41 , wherein said wall portion extends from a first edge of said tamper-evident ring arranged in a position adjacent to said cup body.  
   
   
       45 . Cap according to  claim 44 , wherein said first edge is obtained at a zone of said tamper-evident ring having a minimum diameter.  
   
   
       46 . Cap according to  claim 44 , wherein from said first edge bridge elements lead away arranged to connect said tamper-evident ring to said cup body, said bridge elements being fracturable during a first opening of said cap.  
   
   
       47 . Cap according to  claim 41 , wherein said wall portion extends to said connecting zone.  
   
   
       48 . Cap according to  claim 41 , wherein between said wall portion and said connecting zone there is interposed a substantially cylindrical zone.  
   
   
       49 . Cap according to  claim 41 , wherein said wall portion has a substantially constant thickness.  
   
   
       50 . Cap according to  claim 41 , wherein said connecting zone is interposed between said wall portion and a second edge.  
   
   
       51 . Cap according to  claim 50 , wherein said second edge is joined to said connecting zone by a tilted surface which is tilted towards the inside of said cap.  
   
   
       52 . Cap according to  claim 51 , wherein said tilted surface delimits on said tamper-evident ring (a region comprised between said connecting zone and said second edge and having a substantially trapezoid section.  
   
   
       53 . Cap according to  claim 51 , wherein said tilted surface has a tilt of about 70 degrees in relation to said second edge.  
   
   
       54 . Cap according to  claim 52 , wherein said region further comprises a wall opposite said tilted surface and arranged substantially parallel to an external wall of said cup body.  
   
   
       55 . Cap according to  claim 52 , wherein said region further comprises a further wall opposite said tilted surface and having a diameter that increases approaching said second edge.  
   
   
       56 . Cap according to  claim 52 , wherein said region further comprises a still further wall opposite said tilted surface and having a diameter that decreases approaching said second edge.  
   
   
       57 . Cap according to  claim 50 , wherein said second edge is joined to said connecting zone by a further surface arranged substantially parallel to an external wall of said cup body.  
   
   
       58 . Cap according to  claim 57 , wherein said further surface delimits on said tamper-evident ring a region comprised between said connecting zone and said second edge and having a substantially rectangular section.  
   
   
       59 . Cap according to  claim 41 , wherein said retaining arrangement has an internal dimension such as to define a clearance with said neck.  
   
   
       60 . Cap according to  claim 41 , wherein said side wall is provided with a weakening zone along which said tamper-evident ring may break.  
   
   
       61 . Cap according to  claim 41 , wherein said retaining arrangement comprises a plurality of flaps.  
   
   
       62 . Cap according to  claim 61 , wherein said flaps are arranged at constant intervals along said tamper-evident ring.  
   
   
       63 . Cap according to  claim 61 , wherein there is an even number of said flaps.  
   
   
       64 . Cap according to  claim 61 , wherein there is an uneven number of said flaps.  
   
   
       65 . Cap according to  claim 41 , wherein said retaining arrangement comprises a continuous flap.  
   
   
       66 . Cap comprising a cup body with which a first edge of a tamper-evident ring is associated, said tamper-evident ring comprising a connecting zone from which a flap arrangement extends for engaging with a collar of a container and a second edge opposite said first edge, wherein said second edge is joined to said connecting zone by a surface tilted towards the inside of said cup body and extending from said second edge to said flap arrangement.  
   
   
       67 . Cap according to  claim 66 , wherein said surface delimits on said tamper-evident ring (a region comprised between said connecting zone and said second edge and having a substantially trapezoid section.  
   
   
       68 . Cap according to  claim 66 , wherein said surface has a tilt of about 70 degrees in relation to said second edge.  
   
   
       69 . Cap according to  claim 67 , wherein said region further comprises a wall opposite said surface and arranged substantially parallel to an external wall of said cup body.  
   
   
       70 . Cap according to  claim 67 , wherein said region further comprises a further wall opposite said surface and having a diameter that increases approaching said second edge.  
   
   
       71 . Cap according to  claim 67 , wherein said region further comprises a still further wall opposite said surface and having a diameter that decreases approaching said second edge.  
   
   
       72 . Cap according to  claim 66 , wherein said flap arrangement has an internal dimension such as to define a clearance with a neck of said container from which said collar protrudes.  
   
   
       73 . Cap according to  claim 66 , and further comprising a side wall arranged between said connecting zone and said first edge, said side wall being provided with a weakening zone along which said tamper-evident ring may break.  
   
   
       74 . Cap according to  claim 66 , wherein said first edge is obtained at a zone of said tamper-evident ring having a minimum diameter.  
   
   
       75 . Cap according to  claim 66 , wherein bridge elements arranged to connect said tamper-evident ring to said cup body lead away from said first edge, said bridge elements being fracturable during a first opening of said cap.  
   
   
       76 . Cap according to  claim 66 , wherein said flap arrangement comprises a plurality of flaps.  
   
   
       77 . Cap according to  claim 76 , wherein said flaps are arranged at constant angular intervals along said tamper-evident ring.  
   
   
       78 . Cap according to  claim 76 , wherein there is an even number of said flaps.  
   
   
       79 . Cap according to  claim 76 , wherein there is an uneven number of said flaps.  
   
   
       80 . Cap according to  claim 66 , wherein said flap arrangement comprises a continuous flap.