| 主权项 |
1. A beverage can end configured for containing a pressurized beverage, comprising:
a peripheral curl capable of being joined to a can body by seaming; a wall structure radially inward from the curl; a center panel; a main score defining a main hinge and a main tear panel that is capable of opening upon rupture of the score to form a pour opening; a tab coupled to the center panel by a rivet, the tab having a nose capable of contacting a portion of the main tear panel for rupturing the main score, a body, and a heel formed opposite the nose, the heel being configured for grasping by a user; a vent including:
an elongated vent score defining a vent tear panel and a vent hinge located approximately between opposing ends of the vent score, the vent score is configured to be ruptured by a downward force applied to the tab; andan upwardly protruding button located on the vent tear panel, wherein the button is configured for contact by the underside of the tab heel, and the vent score, at a point at which the vent score is closest to a sidewall of the button, is located on the button or has a distance D3 or D13 from the button sidewall of no more than 0.020 inches such that downward force transmitted from the tab heel to the button ruptures the vent score; and a vent panel recess formed in the center panel, the vent tear panel being located in the vent panel recess; wherein the center panel further comprises a main recess, each one of the main score, rivet, and vent panel recess being formed in the main recess, whereby actuation of the tab by lifting the heel is capable of rupturing the main score, actuation of the tab by pressing down on the tab is capable of rupturing the vent score, and the elongated vent score provides enhanced venting capacity upon deflection of the vent tear panel after rupture. |
