# US 2014/0158575 A1 · Fifty three foot universal stackable container

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- Number: US 2014/0158575 A1
- Document ID: US20140158575A1
- Status: Published application
- Kind: A1
- Application number: 14/180,139
- Filed: 2014-02-13
- Published: 2014-06-12
- Earliest claimed: 2010-07-21
- Assignees: APL Corporation
- Applicants: Apl Limited
- Inventors: Teow Hua Lee
- Web page: https://patentgrep.com/patent/US20140158575A1

## CPC

- B65D 88/022: {in multiple arrangement, e.g. stackable, nestable, connected or joined together side-by-side}
- B65D 88/121: {ISO containers}
- B65D 90/0026: {Corner fittings characterised by shape, configuration or number of openings}
- Y10T 29/49947: by applying separate fastener
- 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
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

One embodiment of the invention is directed to a shipping container forming a rectangular box shape, comprising a pair of side walls, a front wall and a rear wall coupled to the pair of side walls, a top wall coupled to the side walls and the rear walls, a bottom wall coupled to the side walls and the rear walls. The side walls, the front wall, the rear wall and the top wall form top corners. The sides walls, the front wall, the rear wall and the bottom wall form bottom corners. The shipping container further comprises a set of top corner fitting elements disposed at the top corners of the shipping container, each top corner fitting element having an outer aperture, and a set of bottom corner fitting elements disposed at the bottom corners of the shipping container, each bottom corner fitting element having an outer aperture.

## Claims

### Claim 1

A stack of shipping containers comprising:
a first shipping container comprising a first set of top corner fitting elements disposed at the top corners of the first shipping container, each top corner fitting element having an outer aperture;
a first set of bottom corner fitting elements disposed at bottom corners of the first shipping container, each bottom corner fitting element having an outer aperture;
a second shipping container comprising a second set of top corner fitting elements disposed at the top corners of the second shipping container, each top corner fitting element having an outer aperture; and
a second set of bottom corner fitting elements disposed at bottom corners of the second shipping container, each bottom corner fitting element having an outer aperture.

### Claim 2 (depends on 1)

The stack of shipping containers of claim 1 wherein the second shipping container is configured to be stacked directly on top of the first shipping container by utilizing the outer aperture of each of the top corner fitting elements of the first container and the outer aperture of each of the bottom corner fitting elements of the second container.

### Claim 3 (depends on 2)

The stack of shipping containers of claim 2 wherein the first shipping container is configured to be secured to the second shipping container using an attachment device.

### Claim 4 (depends on 3)

The stack of shipping containers of claim 3 wherein the attachment device is a semi-automatic twist lock.

### Claim 5 (depends on 1)

The stack of shipping containers of claim 1 wherein the first shipping container further comprises a first bottom wall and the second shipping container further comprises a second bottom wall, and wherein the first bottom wall and the second bottom wall each comprise a plurality of 75 mm height I-beams.

### Claim 6 (depends on 1)

The stack of shipping containers of claim 1 further comprising a vertical support frame disposed between each top corner fitting element and each bottom corner fitting element of the first container, and a vertical support frame disposed between each top corner fitting element and each bottom corner fitting element of the second container.

### Claim 7 (depends on 1)

The stack of shipping containers of claim 1 wherein the first shipping container and the second shipping container are 53 foot containers.

### Claim 8 (depends on 1)

The stack of shipping containers of claim 1 wherein the stack of shipping containers can be stacked up to seven containers high.

### Claim 9 (depends on 8)

The stack of shipping containers of claim 8 wherein when the shipping containers are stacked up to seven high, they can sustain a racking force of 15,240 kg.

### Claim 10 (depends on 8)

The stack of shipping containers of claim 8 wherein the first shipping container and the second shipping container are configured to be shipped by vessel, truck, and rail.