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US 3,977,594 AGranted
Polygonal carton
OwnerWalter B. Swaninventor
Life of this patent
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OwnerWalter B. Swaninventor
Estimating the term…
A polygonal carton constructed from a unitary blank of stiff but foldable material and having a strong, weight supporting bottom. The carton has a plurality of side panels and a concave bottom. The bottom is formed from a plurality of triangularly shaped bottom panels equal in number to the side panels. Each bottom panel is hingedly connected to one of the side panels and inclines upwardly from the bottom edge of the side panel to the center of the carton bottom. A foldable web is hingedly connected to and between the abuting side edges of adjacent bottom panels. Each web is folded into a reinforcing rib above or below the carton bottom. The ribs hold the panels in place as and when a load is placed on the bottom and the load is supported, at least in part, by the locking and bearing engagement between abuting side edges of adjacent bottom panels.
A polygonal carton having a plurality of side panels and a strong weight supporting bottom formed by a plurality of generally triangular bottom panels equal in number to said side panels and a plurality of interconnecting webs, each web extending between a pair of adjacent bottom panels, each said bottom panel being hingedly connected to one of said side panels, being inclined upwardly from the bottom edge of the side panel to which it is connected so as to form an acute angle therewith, having two side edges which abut adjacent side edges of adjacent bottom panels and having said webs on either side thereof hingedly connecting said bottom panel to an adjacent bottom panel, whereby a load which is placed on said bottom and which urges said bottom panels downwardly will be supported by the locking and bearing engagement between said abuting edges of said bottom panels and by said interconnecting webs.
A unitary carton blank capable of being folded into a carton having a strong weight supporting bottom, set blank being made of stiff but foldable material and including a plurality of parallel spaced score lines dividing said blank into a plurality of generally rectangular side forming panels and a continuous, generally rectangular, webbing which extends along one side of said blank and which is perpendicular to said score lines, said webbing having therein a plurality of generally triangular bottom-forming panels equal in number to said rectangular panels, each triangular panel being hingedly connected to one of said rectangular panels, a plurality of rib-forming webs, each web extending between and hingedly interconnecting an adjacent pair of bottom panels, and two web portions one on each side of said blank, said bottom panels, webs, and web portions being configured and dimensioned in such a manner that when, said blank is folded into a carton, adjacent bottom panels abut each other and each web therebetween folds into a reinforcing rib hingedly connected to and between each pair of adjacent bottom panels.
Dependencies are inferred from the claim text.