Paperboard clamshell carton
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United States of America Patent
Stats
-
Sep 10, 1996
Grant Date -
N/A
app pub date -
Oct 31, 1995
filing date -
Oct 31, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clamshell type container is formed from a unitary blank of paperboard. The central portion of the crown of the carton is convex upwardly and the crown carries inwardly concave opposite side walls. The four corners of the crown are each provided with triangular gussets to permit slight deformation of the crown both upon stacking of the open cartons and upon closing the crown down onto the lower tray part of the carton. The tray side walls are curved or recessed downwardly so as to form line contact with a respective crown side wall, such contact defining a seal and inhibiting warm air loss when a warm foodstuff is placed in the carton.
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Cited Art Landscape
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