Pressure Closure for Beverage and Food Containers

Abstract

A container and its airtight closure. By crimping an open container a new rim ( 050 ) is made having two salient outer ( 05 B) and inner ( 05 A) sides and planes ( 05 A, 05 B) where a gasket ( 24 ) can be accommodated. A typical airtight closure for the open container is made up of a protecting cover ( 2 ) joined to an outer rim ( 5 ) that accommodates with precision to the brim of the can ( 05 ). It has also an internal rim ( 4 ) which along with the outer rim ( 5 ) forms a slot ( 070 ) on the protecting lid, which has an inner ( 5 A) and outer ( 5 B) sides which conform to the inner and outer sides ( 05 A) and ( 05 B) of the sealed brim. The closing surface ( 2 ) has an inverted arch-like ( 25 ) shape, which by mechanical action and gas pressure of the content, renders an airtight seal on the contact planes ( 2 B, 05 B).

1 . A protecting lid for containers of beverages and food previously closed with a depressed surface comprising:
 a) A protecting cover extending all over the closing area of the container including its brim;   b) An outer rim being integral part of the protecting cover, with an inner side that coincides with the outer side of the brim of the container, rendering a substantially airtight sealing between the lid and the container;   c) An inner rim being integral part of the protecting cover, contacting the inner side of the brim of the container and cooperates with the outer rim to render a substantially airtight sealing;   d) A slot formed by the rims and with shapes and dimensions matching the side ( 05 B) of the brim of the container;   e) A salient rim under the protecting cover to engage in groove of the container.   f) A void of variable height between the depressed upper surface of the container and the protecting cover;   g) Brims or grooves to retain advertising means and objects inserted in the void;   h) An inner security ring that tears off when opening the container, showing that it has been opened;   i) A hinge to keep the security ring linked to the lid and keeps it adhere to the container after being opened, and   j) A stacking rims to keep in position the containers for stacking.   
   
   
       2 . An open container with a brim having two salient outer and inner sides both forming contact planes where a gasket accommodates. The geometry of the brim and of the surfaces precisely coincides with the corresponding ones in the groove of the closure of the invention. 
   
   
       3 . The airtight closure matching the correspondent open container of  claim 2 , comprising:
 a) A protecting cover extending all over the closing area of the container including its brim;   b) An outer rim being integral part of the protecting cover, with an inner side that coincides with the outer side of the brim of the container, rendering a substantially airtight sealing between the lid and the container;   c) An inner rim being integral part of the protecting cover, contacting the inner side of the brim of the container and cooperates with the outer rim to render a substantially airtight sealing;   d) A slot formed by the rims with shapes and dimensions matching the side of the brim of the container;   e) A salient rim under the protecting cover to engage in groove of the container.   f) A void of variable height between the depressed upper surface of the container and the protecting cover;   g) Brims or grooves to retain advertising means and objects inserted in the void;   h) An inner security ring that tears off when opening the container, showing that it has been opened;   i) A hinge to keep the security ring linked to the lid and keeps it adhere to the container after being opened, and   j) A stacking rims to keep in position the containers for stacking.   k) A slot having inner sides cooperating with the outer sides of the double seam brim of the container of  claim 2 ;   l) An entrance and a support plane contacting the plane inferior on the brim of the container;   m) A gasket accommodated in the plane inferior on the brim of the container or co-extrude on the metal bended to make the double seams on the brim of the container and on the closure, when they are made of laminate metal;   n) An inverted arch like shape firmly contacting the plane and the gasket;   o) Or an inverted arch like shape affixed to the closure in the entrance holding a gasket;   p) A cover on the convexity inserting the entrance ( 2  A) or bonded on ( 2 C);   q) An inner security ring that tears off when opening the container, showing that it has been opened;   r) A hinge to keep the security ring linked to the lid and keeps it adhere to the container after being opened, and   s) A stack rims to keep in position the containers for stacking.   
   
   
       4 . The closures of  claim 1  having cover with varied shapes and heights allowing for different insert sizes in the void; 
   
   
       5 . The closures of  claim 1  having cover that can be printed, imprinted, and stamped; 
   
   
       6 . The closures of  claim 1  having a protecting skirt shaping the area of the container that can be in contact with the product or the consumer's lips; 
   
   
       7 . The closures of  claim 1  having a salient rim matching shape and dimensions of the slot on the container's surface; 
   
   
       8 . The closures of  claim 1  holding advertising material or objects in the void which is kept in the closure by the edges or slots o or by any other mean; 
   
   
       9 . The closures of  claim 1  with advertising material or objects in the void having a mean for the security of the product and the advertising material and objects; 
   
   
       10 . A sealable receptacle insert in the void and kept in the closure by the edges or slots o or by any other mean; 
   
   
       11 . The closure of  claim 3  having a valve to fill in the container and to alleviate the internal gas pressure within the container; 
   
   
       12 . The plural number of closures of  claim 1  kept together with a handle.