Patent ID: 6089390
Filing Date: 2000-07-18
Classification: B65D

Abstract:
A tamper evident closure suitable for mounting onto a container having closure retention means on the neck of the container, said closure being molded from a resilient material and comprising a top portion, a skirt portion depending from the top portion, the skirt having on its internal surface a complementary retention means to the container retention means and a tamper-evident band portion extending from the skirt portion by connection through frangible bridges, the band portion comprising a generally cylindrical body having a terminal free edge and segmented ribs extending radially inwardly of the body and adapted to provide a lip having an inner free edge to engage under a retaining flange extending outwardly from the neck of the container closure below the retention means thereon, characterized in that the segmented ribs are disposed annularly on the internal circumference of the band, the combined circumference length of the segmented ribs are equal to at least 50% of the internal circumference of the band and the segmented ribs being separated from each other by a gap, each rib segment having an upper side facing generally towards the top portion of the closure and an underside facing generally away from the top portion, and the inner surface of the band having a plurality of radially inward projections extending from above the free edge of the band to below the inner free edge of the lip the closure being characterized in that the upper side of the segmented rib comprises a first surface contiguous with the body portion of the band, which surface slopes inwardly and downwardly away from the top portion, and a second surface which extends radially inward from the inner terminus of the first surface and has a slope angle substantially normal to the skirt portion of the closure.