|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 5 인용 특허 : 50|
A stay-on-tab container closure suitable for use on beverage cans and the like, said closure including an center panel with an downwardly displaceable tear panel, which, in one aspect, has a smooth upper surface having no visually perceptible contour features, and which, in another aspect, has low-relief contour features on its upper surface. Closures according to the invention have reduced stresses across the score defining the tear panel, thereby reducing the likelihood of stress-induced fatigue cracking which can lead to score failure when the contai...
I claim: 1. A stay-on-tab container closure comprising: a generally circular center panel formed from a sheet material; said center panel having upper and lower surfaces; frangible score formed on said upper surface of said center panel; said score, when viewed from above, having a curvilinear bight portion and two end portions disposed at the ends of said bight portion in spaced-apart relation to one another; said bight portion defining most of the periphery of a downwardly displaceable tear panel; said end portions defining there between a hinge porti...