Closure having inverted frangible valve

Abstract

The present invention is directed to a closure for a container. Among the embodiments provided herein, a cap for a container used on a water dispenser has a roof portion, a cylindrical skirt, and a well extending from the roof portion into the cap. The well has a wall structure terminating at a base structure that has a shape defined as comprising an annular rim connected to the wall structure and either a frusto-conical member having an edge that terminates to a disk shaped member, a dome member, or a convex member depending from the annular rim and extending in a direction towards the roof portion. The cap may further include at least two frangible lines defined on the base structure with scored sections at the ends defined by each frangible line. Alternatively, the cap may have a base structure that includes at least two sections, one of which is dominant and overlaps or is coincident with an edge of the other subservient section, the two sections causing the base structure to be sufficiently sealed during non-use and being deformable when penetrated by a probe to separate and allow dispensing of liquid within the container.

1 . A cap for a container used on a water dispenser, said cap comprising:
 a roof portion;   a cylindrical skirt;   a well extending from said roof portion into said cap, the well having a wall structure terminating at a base structure, said base structure having a shape defined as comprising an annular rim connected to said wall structure, a frusto-conical member depending from the annular rim and extending in a direction towards said roof portion, the frusto-conical member having an edge that terminates to a disk shaped member; and   at least two frangible lines defined on said base structure.   
     
     
         2 . The cap of  claim 1 , wherein said disk shaped member is substantially planar. 
     
     
         3 . The cap of  claim 1 , wherein each said frangible lines traverse said base structure. 
     
     
         4 . The cap of  claim 1 , wherein each said frangible lines intersect one another. 
     
     
         5 . The cap of  claim 1 , wherein each said frangible line traverse said base structure and intersect one another. 
     
     
         6 . The cap of  claim 1  further comprising scored sections positioned at ends defined by each frangible line. 
     
     
         7 . The cap of  claim 6  wherein each scored section includes a portion on the base structure and a portion on the wall structure. 
     
     
         8 . The cap of  claim 6  wherein each scored section is defined as a secondary frangible line. 
     
     
         9 . The cap of  claim 6  wherein each scored section is defined as an arcuate secondary frangible line. 
     
     
         10 . The cap of  claim 1  further comprising:
 a shoulder portion which merges with the roof portion;   a skirt portion depending from the shoulder portion; and   the shoulder portion comprising an external surface having at least one first section having a first wall dimension, and at least one recessed region having a second wall dimension less than the first wall dimension.   
     
     
         11 . A cap for a container used on a water dispenser, said cap comprising:
 a roof portion;   a cylindrical skirt; and   a well extending from said roof portion into said cap, the well having a wall structure terminating at a base structure, said base structure having a shape defined as comprising an annular rim connected to said wall structure, a dome depending from the annular rim and extending in a direction towards said roof portion.   
     
     
         12 . The cap of  claim 11  further comprising at least two frangible lines defined on said base structure. 
     
     
         13 . The cap of  claim 11 , wherein each said frangible lines traverse said base structure. 
     
     
         14 . The cap of  claim 11 , wherein each said frangible lines intersect one another. 
     
     
         15 . The cap of  claim 11 , wherein each said frangible lines traverse said base structure and intersect one another. 
     
     
         16 . The cap of  claim 12  further comprising scored sections positioned at ends defined by each frangible line. 
     
     
         17 . The cap of  claim 16  wherein each scored section includes a portion on the base structure and a portion on the wall structure. 
     
     
         18 . The cap of  claim 16  wherein each scored section is defined as a secondary frangible line. 
     
     
         19 . The cap of  claim 16  wherein each scored section is defined as an arcuate secondary frangible line. 
     
     
         20 . The cap of  claim 11  wherein the base structure includes at least two sections, wherein one of said sections includes a dominate portion that overlaps or is coincident with an edge of a subservient portion defined by another one of said sections, such that the overlap or coincidence causes the base structure to be sufficiently sealed during non-use, and said at least two sections being deformable such that during penetration of the base structure by a probe defined by the water dispenser, the two sections deform to separate and allow liquid within said container to dispense. 
     
     
         21 . The cap of  claim 20 , wherein the base structure includes four sections defined to have two dominate portions overlapping or coincident with two subservient portions. 
     
     
         22 . A cap for a container used on a water dispenser, said cap comprising:
 a roof portion;   a cylindrical skirt; and   a well extending from said roof portion into said cap, the well having a wall structure terminating at a base structure, said base structure having a shape defined as comprising an annular rim connected to said wall structure, a convex member depending from the annular rim and extending in a direction towards said roof portion.   
     
     
         23 . The cap of  claim 22  further comprising at least two frangible lines defined on said base structure. 
     
     
         24 . The cap of  claim 23 , wherein each said frangible lines traverse said base structure. 
     
     
         25 . The cap of  claim 23 , wherein each said frangible lines intersect one another. 
     
     
         26 . The cap of  claim 23 , wherein each said frangible lines traverse said base structure and intersect one another. 
     
     
         27 . The cap of  claim 23  further comprising scored sections positioned at ends defined by each frangible line. 
     
     
         28 . The cap of  claim 27  wherein each scored section includes a portion on the base structure and a portion on the wall structure. 
     
     
         29 . The cap of  claim 27  wherein each scored section is defined as a secondary frangible line. 
     
     
         30 . The cap of  claim 27  wherein each scored section is defined as an arcuate secondary frangible line. 
     
     
         31 . A cap for a container used on a water dispenser, said cap comprising:
 a roof portion;   a cylindrical skirt;   a well extending from said roof portion into said cap, the well having a wall structure terminating at a base structure, said base structure having a shape defined as comprising an annular rim connected to said wall structure, a dome depending from the annular rim and extending in a direction towards said roof portion;   a frangible line defined on said base structure and having a pair of ends; and   scored sections positioned at said ends defined by said frangible line.   
     
     
         32 . The cap of  claim 31  wherein each scored section includes a portion on the base structure and a portion on the wall structure. 
     
     
         33 . The cap of  claim 32  wherein each scored section is defined as a secondary frangible line. 
     
     
         34 . The cap of  claim 32  wherein each scored section is defined as an arcuate secondary frangible line.