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US 4,065,047 AGranted
Polygonal carton with bottom reinforcement and blank therefor
OwnerWalter B. Swaninventor
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OwnerWalter B. Swaninventor
Estimating the term…
The polygonal carton is constructed from a unitary blank of stiff but foldable material and has a reinforced bottom. The blank includes two blank portions divided into at least two, rectangular, side-forming panels. A rectangular webbing is hingedly connected to each blank along a side thereof which is perpendicular to a score line separating the side-forming panels. A line separates the webbings and a portion of the blank along that line is cut and another portion of the blank along that line is scored to form a fold line between the webbings. Each webbing has a plurality of triangular bottom-forming panels therein, each hingedly connected to one of the side-forming panels and a plurality of webs, each extending between and hingedly interconnecting an adjacent pair of bottom-forming panels. Each web has a fold line therein. When the blank is folded into a carton, each web is folded approximately 180.degree. at the fold line to form a reinforcing rib and at least one of the fold lines in one of the folded webs then extends along a web which is parallel to the folded side panels and extends downwardly from a junction between two triangular bottom panels interconnected by that web. With this construction, a load which is placed on the bottom and which urges the bottom panels downwardly is supported by the locking and bearing engagement between the abutting edges of the bottom panels and by the reinforcing ribs formed by the folded interconnecting webs. This application is a continuation-in-part of my earlier application Ser. No. 719,245, filed on Aug. 31, 1976, which is a division of my earlier application Ser. No. 601,593, filed on Aug. 4, 1975, and now as issued U.S. Pat. No. 3,977,594.
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 panel, and each said web having a fold line therein which divides said web into two rib sections and being folded approximately 180.degree. at said fold line to form a double-ply reinforcing rib, at least one of said fold lines extending along a line which is parallel to said side panels and which extends downwardly from a point coincident with the apexes of two adjacent bottom panels interconnected by that web, 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 abutting 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, said blank being made of stiff but foldable material and including two blank portions, each having at least one score line dividing said blank portion into at least two, generally rectangular, side-forming panels, a continuous, generally rectangular, webbing hingedly connected along a side of said blank portion which is perpendicular to said score line, each said webbing being connected to the other webbing along at least part of a line separating said webbings, a portion of said blank along said line being cut and a portion of said blank along said line being scored to form a fold line between said webbings, and each webbing having therein a plurality of generally triangular, bottom-forming panels equal in number to said side-forming panels, each bottom-forming panel being hingedly connected to one of said side-forming panels, and a plurality of rib-forming webs, each web extending between and hingedly interconnecting an adjacent pair of bottom-forming panels, said bottom-forming panels and webs being configured and dimensioned in such a manner that, when said blank is folded into a carton, adjacent bottom-forming 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.