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US 4,819,824 AGranted
Lidded containers
AssigneeBarker, Brettell & Duncan
InventorsKarl Longbottom, Norman Whiteley, Paul J. H. Bagnall
Life of this patent
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AssigneeBarker, Brettell & Duncan
InventorsKarl Longbottom, Norman Whiteley, Paul J. H. Bagnall
Estimating the term…
A lidded container is provided which is intended to deter unauthorized removal of the lid. The container has an out-turned lip of inverted U-section having a circumferential horizontal flange supporting an upright retention portion with a retaining bead. The lid has a rim portion which is also of inverted U-section, the web of the U having a formation engaging a complementary formation on the lip of the container to provide location and sealing connection between the lid and container, and the outer limb being outwardly cranked and forming a depending skirt having a retaining formation which interlocks with the retaining formation. Part of the flange is extended to form a tab which is removable at a line of weakening to facilitate separation of the lid and container. Removal of the tab indicates that the container has been opened or at least that it has been tampered with.
A lidded container comprising a container having a rim and a lid having a skirt which surrounds said rim and has a lower portion, said rim being of an inverted generally U-section including an outer depending limb having an outwardly and downwardly inclined lower portion from which a circumferential flange extends outwards underneath said skirt, said circumferential flange having an upstanding retention portion which surrounds said lower portion of said skirt, said skirt and said retention portion having mechanically interlocked formations which extend continuously around said container, said flange being formed with a line of weakening and said retention portion having a portion adjacent to said line of weakening which is separable at least partially from the remainder of said flange at said line of weakening to enable the mechanical interlock between said formations to be released.
Dependencies are inferred from the claim text.