Patent ID: 6923338
Filing Date: 2005-08-02
Classification: B65D

Abstract:
1. A thermoplastic container having an interlocking rim structure defined about the periphery thereof, said interlocking rim structure having at least one undercut male ridge section and at least one undercut female groove section defined therein, wherein said ridge section and said groove section have generally identical U-shapes, said male and female sections being configured such that male and female sections on a container having a substantially identical interlocking rim structure will seal with interpenetrating resilient engagement extending substantially entirely around the periphery of said thermoplastic container, the undercuts on said ridges and grooves being configured to urge the rim structures on containers having substantially identical interlocking rim structures into sealing engagement, by virtue of the undercut male ridge section mating with a corresponding overhang of the undercut female groove section and the undercut female groove section mating with a corresponding overhang of the undercut male ridge section.