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An easy open safety end having a central portion and a rim portion separated by a score line. A tab applies a force to the end adjacent the score line so as to shear the score line at opening. A circumferentially extending fold is formed in either the central portion or the rim portion, or both, to

An easy open safety end having a central portion and a rim portion separated by a score line. A tab applies a force to the end adjacent the score line so as to shear the score line at opening. A circumferentially extending fold is formed in either the central portion or the rim portion, or both, to protect the user from being cut by the sharp edge the results upon shearing the score line. A first circumferential portion of the fold is tight, whereas a second portion, which is preferably proximate the tab is loose. The fold is displaced below a portion of the end adjacent the score line by a circumferentially extending gap. In the tight portion of the fold, the width of the gap is less than the thickness of the end, and preferably less than one half the thickness, whereas in the loose portion of the fold, the width of the gap is greater than the thickness of the end, and is preferably at least twice the thickness of the end.

대표청구항 ▼

1. An easy open safety container end having improved opening characteristics comprising:a) a central portion; b) a rim portion surrounding said central portion, said rim and central portions having a thickness and separated by a score line; c) means for applying a force for shearing said score line;

1. An easy open safety container end having improved opening characteristics comprising:a) a central portion; b) a rim portion surrounding said central portion, said rim and central portions having a thickness and separated by a score line; c) means for applying a force for shearing said score line; d) first and second circumferentially extending folds formed in at least one of said central portion and said rim portion at a location proximate said score line, said first fold displaced from a surface of said one of said central portion and said rim portion in which said folds are formed that is adjacent said score line so as to form a circumferentially extending gap therebetween, said gap having a width, said width of said gap over a first portion of said circumference of said gap being less than said thickness, said width of said zap over at least second and third portions of said circumference of said gap being greater than said thickness, said second and third portions of said circumference of said gap being distinct from each other and circumferentially displaced away from said force applying means on opposing sides thereof, whereby said width of said gap varies around said circumference of said gap so as to be increased over at least two distinct portions thereof.