Receptacles – Closures – With closure opening arrangements for means
Patent
1997-02-27
1999-08-03
Cronin, Stephen K.
Receptacles
Closures
With closure opening arrangements for means
220906, B65D 4132
Patent
active
059313315
ABSTRACT:
A can end having an improved pour-type ecology opening mechanism includes a conventional can end wall that contains a score line that defines a displaceable panel. The score line includes an initial design rupture point, a radiused portion having a first tangent point and a second tangent point, and a main portion that terminates at a final transition point. The can end further includes a tab having a liftable heel portion and a tab nose portion, with the tab nose portion being positioned to apply downward pressure to the panel at a pressure point on the displaceable panel when the heel portion is lifted. The tab has a center line that is coincident with a radius of said can end wall. Advantageously, the pressure point is positioned a distance, taken in the direction of the center line, from the second tangent point of the radiused portion that is selected to prevent a buildup of force that would otherwise hasten propagation of separation along the main portion of the score. This prevents splashing of the beverage during opening of the can by the consumer.
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Calhoun Michael C.
Hoffman David M.
Kirk William A.
McFarland Jeffrey
Cronin Stephen K.
Crown Cork & Seal Technologies Corporation
Newhouse Nathan
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