Patent ID: 8567158

Claim:
A container end closure with a peripheral curl adapted for interconnection to a neck of a container, comprising: a central panel; a pull tab comprising a nose and a tail and a rivet island, said pull tab adapted for applying a downward force on a predetermined portion of said central panel; a rivet operatively interconnecting said pull tab on an upper surface of said central panel and allowing said pull tab to rotate a predetermined distance in a plane which is substantially parallel to said central panel; a first opening portion defined by a first severable score line and a first hinge portion; a second vent opening portion defined by a second severable score line and a second hinge portion, the second vent opening positioned substantially adjacent to said first opening portion; and a transition portion adapted to substantially prevent a fracture propagation of said first severable score line into said second severable score line, the transition portion comprising a curvature in the first severable score line departing from a general path of the first severable score line to define a void with a predetermined width; and wherein said first opening portion and said second opening portion can be selectively opened with a nose portion of said pull tab to form a contiguous opening area which includes the area defined by said first opening portion and said second vent opening portion to enhance air flow.