Closure with high energy button

Details Closure with high energy button Closure with high energy button

B - Operations, Transporting

65

D

B65D 55/02 (2006.01) B21D 51/44 (2006.01) B65D 41/02 (2006.01) B65D 79/00 (2006.01)

Patent

CA 2046203

This related to a conventional type of closure having a control button which is normally provided with an "up" convex state and which is movable by a vacuum within an associated container to a "down" concave state. The button, as formed, has a zero or tensile stress state with the stress state changing to a compressive stress state when the button is drawn downwardly by a vacuum within the associated container. In accordance with this invention, the button has been reformed so that it is slightly flattened and this reforming has changed the zero or tensile stress state to a compressive stress state thereby providing the button with more stored energy when it is drawn downwardly by a vacuum within an associated container. This additional stored energy provides for a greater flipping action of the button which can be utilized to operate an irreversible tamper indicating system which may be applied to than button.

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