Can end having a main score and a score extension

摘要

A beverage can end for seaming onto a can body may include a peripheral wall, a center panel, a tab attached to the center panel by a rivet (56), a tear panel (41b), a main reference line (RM), a transverse reference line (RT), and a score (31b). The score may include arcuate main score (31b) that defines a main portion of the tear panel (41b) and a score extension (32b) that defines a vent portion. The score may be configured such that actuation of the tab from its horizontal rest position to an intermediate position ruptures the main score portion (31b) to pivot the tear panel main portion (40b) about the hinge and further actuation of the tab by twisting from the intermediate position ruptures the score extension (32b).

主权项

1. A beverage can end for seaming onto a can body, the can end comprising: a peripheral wall;
a center panel; a tab attached to the center panel by a rivet; a tear panel including (i) a main portion capable of pivoting about a hinge and (ii) a vent portion; a main reference line that bisects the tear panel main portion and extends through the rivet, the hinge being offset relative to the main reference line; a transverse reference line that is perpendicular to the main reference line and bisects the rivet, the main portion of the tear panel being located in front of the transverse reference line; and a score including an arcuate main score that defines the main portion of the tear panel and a score extension that defines the vent portion, a first end of the score (i) defines one end of the hinge and (ii) is located on the hinge-side of the main reference line and in front of the transverse reference line, a second end of the score (i) defines one end of the score extension and (ii) is located on the hinge-side of the main reference line and to the rear of the transverse reference line; whereby the score is configured such that actuation of the tab from a horizontal rest position to an intermediate position ruptures the main score portion to pivot the tear panel main portion about the hinge and further actuation of the tab by twisting from the intermediate position ruptures the score extension.