초록 ▼

The present invention provides a stay-on-tab end closure having a displaceable tear panel defined by a frangible score with a sloping segment and a non-frangible hinge segment. A curvilinear bead is formed entirely in an exposed area of the central panel formed by a void region of the tab webbing. T

The present invention provides a stay-on-tab end closure having a displaceable tear panel defined by a frangible score with a sloping segment and a non-frangible hinge segment. A curvilinear bead is formed entirely in an exposed area of the central panel formed by a void region of the tab webbing. The nose of the tab has a generally asymmetric shaped outer edge with a second portion extending further over the tear panel toward the curvilinear transition zone of the score. The invention further provides a tab with an asymmetrical thickness, with a thickened portion adjacent the second scoreline segment, and further provides a bead segment positioned under a side portion of the tab nose adjacent the second segment of the score. The present invention also provides an end with a hinge region of the tab adapted to bend at a hinge line, the hinge line intersecting the central longitudinal axis of the tab at an oblique angle. The invention also provides a stepped profile of the panel outer edge with substantially parallel countersink walls and a chuck wall angularly extending from below the panel height.

대표청구항 ▼

[ We claim:] [1.] An end closure for a container, comprising:a central panel wall having a product side and a public side and having a tab and a rivet;a displaceable tear panel in the central panel wall at least substantially defined by a frangible score and a non-frangible hinge segment;the tab bei

[ We claim:] [1.] An end closure for a container, comprising:a central panel wall having a product side and a public side and having a tab and a rivet;a displaceable tear panel in the central panel wall at least substantially defined by a frangible score and a non-frangible hinge segment;the tab being attached to the public side of the central panel wall by the rivet, at least a nose portion of the tab extending over a portion of the tear panel, a lift end of the tab being opposite the tab nose;a central webbing of the tab between the nose and lift end, the webbing having a hinge region and a rivet island surrounding the rivet, the rivet island being at least partially surrounded by a void region to provide an exposed area of the central panel, a curvilinear bead in the central panel wall being located entirely in said exposed area.