Pop up tab tray with intack shoulder portion

Details Pop up tab tray with intack shoulder portion Pop up tab tray with intack shoulder portion

1990-12-17

1992-01-28

Marcus, Stephen

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

229 15B, 22912517, 22912527, B65D 134

Patent

active

050836994

ABSTRACT:
In a paperboard food container, especially the clamshell type used in the fast food industry, a releasably interlocking means between the container and a lid. The interlocking means includes a slot formed in the container which not only leaves a continuous, coplanar shoulder around the circumference of the container which allows complete sealing with a lid structure, but additionally provides a tab which extends above the slot, allowing the lid structure to have either a flange extending under the container tab or, in addition to the flange, a tab inserting into the slot.

REFERENCES:
patent: 3349950 (1967-10-01), Wonderer
patent: 4026458 (1977-05-01), Morris et al.
patent: 4753351 (1988-06-01), Guillin

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