Patent ID: 8839978

Claim:
A closure assembly for closing an opening in a container, the closure assembly comprising: a closure member including an engagement structure configured to engage the opening; a tether having a connector portion with a first end coupled to the closure member, and a second end opposite the first end; a plurality of barbs positioned at the second end of the connector portion, each of the plurality of barbs having a rigid construction, wherein the plurality of barbs define a maximum splayed dimension to retain the closure member with respect to the opening; and a movable joint coupling each of the plurality of barbs to the second end, wherein each of the plurality of barbs is foldable about the respective movable joint so that the plurality of barbs define a dimension substantially smaller than the maximum splayed dimension to allow insertion through the opening, wherein the movable joint is integrally-formed as a single piece with the second end of the connector portion and the plurality of barbs, wherein a limiting structure provided on each of the plurality of barbs is configured to selectively contact a corresponding limiting surface provided on the second end of the connector portion to prevent folding of the plurality of barbs beyond the maximum splayed dimension, and wherein the limiting structure and the corresponding limiting surface have complementary shapes, including a projection and a recess.