Special receptacle or package – Structural features for vertical stacking – i.e. – similar... – Closure structure specified for stacking
Patent
1978-11-27
1980-06-10
Lowrance, George E.
Special receptacle or package
Structural features for vertical stacking, i.e., similar...
Closure structure specified for stacking
150 05, 206519, 220 70, 220306, 220366, 220 4B, 229 25R, B65D 2102, A47G 1902, B65D 4310
Patent
active
042068452
ABSTRACT:
A food container suited for use in carry out food service having a base and cover. Each container portion is of tapered construction to permit stacking upon itself for storage and each has stop members formed thereon to determine stack height. Catch structure is formed on the cover which interlocks with resilient lip structure formed around the upper periphery of the base to detachably lock the container and base in an assembled state. The container base forms a shallow hollow of sufficient depth to prevent spillage, but is sufficiently flat to permit use as a plate which can be eaten upon with knife and fork. The resilient lip structure defines, when interlocked with the cover, vents which provide air circulation in the closed container to prevent condensation therein. Formed on the top of the cover and the bottom of the base is interfitting structure operable to retain one assembled container stably stacked on another with food contained therein. The container portions are preferably made of inexpensive heat insulative material to keep food warm and also be disposable.
REFERENCES:
patent: 2379680 (1945-07-01), Burdick
patent: 3107027 (1963-10-01), Hong
patent: 3303964 (1967-02-01), Luker
patent: 3326408 (1967-06-01), Ringlen
patent: 3450301 (1969-06-01), Stec
patent: 3708086 (1973-01-01), Colato
patent: 3794090 (1974-02-01), Commisso
patent: 3797694 (1974-03-01), See
patent: 3815736 (1974-06-01), Sedlak
patent: 3981401 (1976-09-01), Blanchard
patent: 4061241 (1977-12-01), Retelny
Dart Industries Inc.
Hovet Kenneth J.
Lowrance George E.
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