B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
190/143
B65D 41/32 (2006.01) B65D 17/34 (2006.01)
Patent
CA 1045063
ABSTRACT OF THE DISCLOSURE An improved pull tab mounting arrangement provides an movable fulcrum to facilitate opening a self-opening can. An expandable pleat is formed in the end panel at the base of the tab-attaching rivet and the tab is mounted with its nose portion in spaced relation above and radially inward of the opening score line. As the finger ring portion of the tab is lifted, the pleat unfolds, allowing both the rivet and the tab to travel upwardly and outwardly to bring the tab nose into contact with the score line. This displacement moves the fulcrum point of the tab toward the nose portion and away from the finger ring portion, thereby providing increased leverage and reducing the effort required to fracture the score line. In addition, the stress placed on the tab and the end panel during opening is reduced, thereby permitting the use of thinner gauge metal for these members. Further, spacing of the nose portion and the score line reduces the probability that mishandling of the container will result in an unintentional fracture of the score.
233656
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