Patent ID: 7503468
Filing Date: 2009-03-17
Classification: B65D

Abstract:
1. A closure suitable for attachment to a container having an end portion defining an opening of the container, the closure comprising: a top portion; a skirt portion depending from the top portion, said top portion and skirt portion defining a cavity; a first sealing portion which is at least adjacent the top portion and having an inner surface, said inner surface having a first substantially cylindrical surface portion lying radially inwardly of the skirt portion and at least one second substantially cylindrical surface portion lying radially inwardly of the first surface portion; and a second sealing portion separated from the top portion by the inner surface of the first sealing portion and contiguous with said first sealing portion; wherein said second sealing portion, prior to attachment of the closure to the container, extends at least inwardly into said cavity to a free edge positioned inwardly of the skirt portion, and after attachment of the closure to the container, has been pushed relatively upwardly and into contact with at least an innermost of said at least one second substantially cylindrical surface portions; wherein the underside of the top portion of the closure has a nub extending downwardly from the underside of the top portion and positioned radially inwardly of the inner surface of the first sealing portion of the closure, said nub being positioned such that, during relative attachment of the closure with the end portion of the container, the nub contacts the inner surface of the end portion of the container; wherein the nub comprises a continuous member having an inner surface, an outer surface, and which extends downwardly and outwardly from the top portion to an end distal the top portion; and wherein the nub extends downwardly from the top portion for a length substantially equal to the length of the inner surface of the first sealing portion.