# US 6,293,460 B1 · Carton with locking mechanism

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- Number: US 6,293,460 B1
- Document ID: US6293460B1
- Status: Granted
- Kind: B1
- Application number: 09/552,948
- Filed: 2000-04-20
- Granted: 2001-09-25
- Earliest claimed: 1998-05-05
- Assignees: International Paper Company
- Inventors: John Randall Boutin; Tony Joseph Abshire; Brian Keith Jambois
- Web page: https://patentgrep.com/patent/US6293460B1

## CPC

- B65D 5/10: with end closures formed by inward-folding of self-locking flaps hinged to tubular body
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES

## Abstract

A carton and blank for forming the same including a plurality of spaced apart sections having respective end panels, at least one locking mechanism including a notch formed in one of the end panels and an edge portion formed in an adjacent end panel, each edge portion having a slanted portion and a straight portion forming a junction with the junction being insertable into the notch when the sections are folded together.

## Claims

### Claim 1

A carton comprising a plurality of spaced apart sections having respective end panels, at least one locking mechanism comprising a notch formed near one end in one of said end panels and an edge portion formed near an end of an adjacent end panel which is adjacent to said one end said locking mechanism locking adjacent panels together, each edge portion having a slanted portion and a straight portion forming a first junction therebetween, said first junction being insertable into said notch to lock adjacent panels together when the sections are folded together.

### Claim 2 (depends on 1)

The carton of claim 1 wherein the notch is V-shaped.

### Claim 3 (depends on 1)

The carton of claim 1 wherein the notch is formed from converging cutlines.

### Claim 4 (depends on 1)

The carton of claim 1 wherein the first junction between the slanted portion and the straight portion is curvilinear.

### Claim 5 (depends on 1)

The carton of claim 1 comprising four foldable sections, each section having an end panel, one pair of spaced apart end panels having a notch, and an alternating spaced apart end panels having said edge portion.

### Claim 6 (depends on 5)

The carton of claim 5 wherein the notch is V-shaped.

### Claim 7 (depends on 5)

The carton of claim 5 wherein the notch is formed from converging cutlines.

### Claim 8 (depends on 5)

The carton of claim 5 wherein the first junction between the slanted portion and the straight portion is curvilinear.

### Claim 9

A blank foldable into a carton comprising a plurality of spaced apart sections having respective end panels each having respective ends, at least one locking mechanism comprising a notch formed near one end in one of said end panels and an edge portion formed in an adjacent end panel which is adjacent to said one end in an adjacent end panel, said locking mechanism locking adjacent panels together when the blank is folded into a carton, each edge portion having a slanted portion and a straight portion forming a first junction therebetween, said junctions being insertable into said notches to lock adjacent panels together when the sections are folded together to form said carton.

### Claim 10 (depends on 9)

The blank of claim 9 wherein the notch is V-shaped.

### Claim 11 (depends on 9)

The blank of claim 9 wherein the notch is formed from converging cutlines.

### Claim 12 (depends on 9)

The blank of claim 9 wherein the first junction between the slanted portion and the straight portion is curvilinear.