Food tray with lockable lid

Envelopes – wrappers – and paperboard boxes – Wrapper – Bottle

Patent

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Details

D 9423, D 9425, 24702, 229 25R, 229 45R, B65D 134

Patent

active

045763305

ABSTRACT:
The present invention embodies an upright cylindrical element or peg on the horizontal flange of a tray which is received in snap, reversible locking engagement within the closed bore of a cylindrical female element provided in a corresponding location on the horizontal flange on a lid so that the lid and tray can be firmly and securely locked together. The male and female elements are formed during the thermoforming process used to form the lid and tray wherein the peg or male snap part is provided with an enlarged diameter portion at its closed top end or head which is received in snap engagement past a smaller diameter annular rim formed in the opening to the bore of the female cylindrical element. The female element also includes a side wall which is tapered from bottom to top for receiving the head of the peg or mating cylindrical male element which snaps over and past the annular rim. The head of the peg is guided by the tapered side wall into secure engagement with the interior end surface of the bore of the female element.

REFERENCES:
patent: D276590 (1984-12-01), Lobel
patent: 3164478 (1965-01-01), Bostrom
patent: 3421682 (1969-01-01), Eisenbach
patent: 3447731 (1969-06-01), Lehman
patent: 3552595 (1971-01-01), Gerner
patent: 3596822 (1971-08-01), Holley
patent: 3633785 (1972-01-01), Cyr
patent: 3669606 (1972-06-01), Brown
patent: 3786982 (1974-01-01), Rakes et al.
patent: 3807622 (1974-04-01), Belcher et al.
patent: 3933296 (1976-01-01), Ruskin et al.
patent: 3937389 (1976-02-01), Wind
patent: 4057169 (1977-11-01), Payne
patent: 4197940 (1980-04-01), DeRossett
patent: 4243140 (1981-01-01), Thrun
patent: 4494650 (1985-01-01), Cullen

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