Carton with web lock

Claim 2

In a foldable carton having adjacent walls thereof defining a corner and being joined together by a folded web reversely folded upon itself and directly integrally connected to each of said walls along a respective fold line, a web lock in said corner for locking said web in a folded state with said adjacent walls being retained in a corner forming relation, and said web lock includes an opening in one of said walls and a portion of the other of said walls is positioned in said opening.

Claim 3

The foldable carton of claim 1 wherein said folded web draws the opening bearing portion of said one wall towards said other wall to retain said other wall portion in said opening.

Claim 4

The foldable carton of claim 1 wherein said folded web is folded alongside the other of said walls, and said web lock further includes hingedly joined together portions of said other wall and said folded web positioned in said opening.

Claim 5

The foldable carton of claim 1 wherein said folded web is folded alongside the other of said walls, and said web lock further includes hingedly joined together portions of said other wall and said folded web positioned in said opening, said folded web drawing the opening bearing portion of said one wall towards said other wall to retain said other wall portion in said opening.

Claim 6

The foldable carton of claim 1 wherein said walls are hinged to a common panel and have free edges remote from said panel, and said web lock is in the form of a notch in said one wall adjacent its free edge at said corner, said one wall slopes from said panel to said free edge generally towards the adjacent edge of said other wall, and said portion of said other wall projecting into said notch is adjacent its free edge.

Claim 7

The foldable carton of claim 5 wherein the edge portion of said other wall between said edge portion projecting into said notch and said panel is deformed by engagement thereof with said one wall.

Claim 8

The foldable carton of claim 6 wherein deformation of said deformed edge portion is facilitated by a cut line and a fold line formed in said other wall.

Claim 9

In a foldable carton having adjacent walls thereof defining a corner and being joined together by a folded web, a web lock in said corner for locking said web in a folded state with said adjacent walls being retained in a corner forming relation, said walls being hinged to a common panel and having free edges remote from said panel, and said web lock including a notch in one of said walls adjacent its free edge at said corner, said one wall sloping from said panel to said free edge generally towards the adjacent edge of the other of said walls, said folded web being disposed alongside said other wall, and joined together edge portions of said other wall and said folded web adjacent the free edge of said other wall projecting into said notch.

Claim 10

In a foldable carton having adjacent walls thereof defining a corner and being joined together by a folded web, a web lock in said corner for locking said web in a folded state with said adjacent walls being retained in a corner forming relation, said walls being hinged to a common panel and having free edges remote from said panel, and said web lock including a notch in one of said walls adjacent its free edge at said corner, said one wall sloping from said panel to said free edge generally towards the adjacent edge of the other of said walls, said folded web being disposed alongside said other wall, and joined together edge portions of said other wall and said folded web adjacent the free edge of said other wall projecting into said notch.

Claim 11

The foldable carton of claim 8 wherein the joined tOgether edge portions of said other wall and said folded web between said edge portions projecting into said notch and said panel are deformed by engagement thereof with said one wall.

Claim 12

The foldable carton of claim 9 wherein deformation of said deformed edge portions is facilitated by cut lines and fold lines formed in said other wall and said folded web.

Claim 13

In a blank for a foldable carton, a foldable corner forming portion including a panel, first and second wall panels connected to said panel along adjacent edges thereof along first and second fold lines, and a foldable web disposed at a corner of said panel and connected to adjacent edges of said first and second wall panels along third and fourth fold lines, a diagonal fold line in said foldable web extending from said panel corner, said third fold line being a direct continuation of said second fold line, said fourth fold line being an angled extension of said first fold line and sloping towards said second panel to form projecting folded edge portions on said foldable web and said second wall panel when said blank is folded to form a carton, and said third fold line terminating in a cut line defining notch means in said first wall panel for receiving the projecting folded edge portions.

Claim 14

In a blank for a foldable carton, a foldable corner forming portion including a panel, first and second wall panels connected to said panel along adjacent edges thereof along first and second fold lines, and a foldable web disposed at a corner of said panel and connected to adjacent edges of said first and second wall panels along third and fourth fold lines, a diagonal fold line in said foldable web extending from said panel corner, said third fold line being a direct continuation of said second fold line, said fourth fold line being an angled extension of said first fold line and sloping towards said second panel to form projecting folded edge portions on said foldable web and said second wall panel when said blank is folded to form a carton, and said third fold line terminating in a cut line defining notch means in said first wall panel for receiving the projecting folded edge portions.

Claim 15

The carton blank of claim 11 wherein a cut line is formed in said foldable web and said second wall panel generally parallel to said second fold line, and converging fold lines are formed in said foldable web and said second wall panel extending from the ends of said cut line generally towards said panel to define deformable edge portions on said foldable web and said second wall panel.

Claim 16

The carton blank of claim 11 wherein the combined linear extent of said cut line and said third fold line is substantially equal to the linear extent of said fourth fold line.