发明名称 |
End closure with improved openability |
摘要 |
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.
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申请公布号 |
US6024239(A) |
申请公布日期 |
2000.02.15 |
申请号 |
US19970887576 |
申请日期 |
1997.07.03 |
申请人 |
AMERICAN NATIONAL CAN COMPANY |
发明人 |
TURNER, TIMOTHY L.;FORREST, RANDALL G.;MILES, MICHAEL P. |
分类号 |
B65D17/00;B65D17/32;B65D17/34;(IPC1-7):B65D17/34 |
主分类号 |
B65D17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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