Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1990-01-11
1991-05-21
Marcus, Stephen
Receptacles
Closures
Having means for securing or retaining closure in its closed...
B65D 4316
Patent
active
050167774
ABSTRACT:
A molded Expandable Polystyrene box having a top and a bottom hinged along one edge is provided with a dual hinge in which, each hinge portion folds only 90.degree. to form a 180.degree. closure of the top and the bottom. The hinges are formed by molding longitudal indentations on either side of a semi-arcuate reinforcing spine together with clearances in an integral web joining the top and bottom. The indentations are highly compacted into solid plastic so that the hinge can be flexed repeatedly without breaking.
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Castellano S.
Marcus Stephen
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