Closure with high energy button

Details Closure with high energy button Closure with high energy button

1990-07-09

1991-05-21

Marcus, Stephen

Bottles and jars

Closures

Including visual indicia

215271, 413 8, B65D 5114

Patent

active

050167693

ABSTRACT:
This relates to a conventional type of closure having a central 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 the button.

REFERENCES:
patent: 3062396 (1962-11-01), Foss et al.
patent: 3160302 (1964-12-01), Chaplin
patent: 3460701 (1969-08-01), Powalowski et al.
patent: 4121729 (1978-10-01), Husum
patent: 4177746 (1979-12-01), Lee, Jr. et al.
patent: 4341321 (1982-07-01), Gombas
patent: 4458469 (1984-07-01), Dunn
patent: 4533059 (1985-08-01), Kapolas et al.
patent: 4616761 (1986-10-01), Nolan
patent: 4721219 (1988-01-01), Dullabaun et al.
patent: 4852753 (1989-08-01), Ochs

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