Molded lid assembly with primary and secondary latching features

Details Molded lid assembly with primary and secondary latching features Molded lid assembly with primary and secondary latching features

1987-03-27

1988-01-12

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220276, 220306, 220380, 215256, 206508, B65D 1734

Patent

active

047185716

ABSTRACT:
A lid for use with containers such as drums, pails, tubs and cups which is formed as a singular unit from molded plastic and which incorporates a peripherally disposed skirt configured along with a rim structure to provide primary and secondary latching features. A parting groove is positioned within the skirt assembly in conjunction with a tear ring which functions to remove the primary latching assembly following the initial closure of the container with the lid. Prior to such removal, the primary latching assembly includes an interference lug having a compression section which engages the upwardly disposed surface of an engaging groove formed within the rim structure of the container. After removal of the primary latching assembly, a secondary latching arrangement is maintained which includes the upper skirt portion, a generally semi-cylindrically shaped rim interior portion having a bead conforming surface nestable in seating adjacency with the upwardly disposed container rim bead and a detent defining ridge formed integrally with the skirt upper portion interior surface at a location for snap-on engagement with the rim structure of the container.

REFERENCES:
patent: 4457447 (1984-07-01), Kirkis
patent: 4493432 (1985-01-01), Smith
patent: 4574974 (1986-03-01), Von Holdt
patent: 4660735 (1987-04-01), Reschardt

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