# US 4,392,662 A · Device for facilitating particularly the loading and unloading of containers etc. from vehicles etc.

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- Number: US 4,392,662 A
- Document ID: US4392662A
- Status: Granted
- Kind: A
- Application number: 06/277,259
- Filed: 1981-06-25
- Granted: 1983-07-12
- Earliest claimed: 1980-07-10
- Inventors: Norbert Hoglinger
- Web page: https://patentgrep.com/patent/US4392662A

## CPC

- B65D 90/14: Legs, e.g. detachable
- B65D 90/18: Castors, rolls, or the like; e.g. detachable (castors in general B60B)
- 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 container structure includes a pair of telescopic leg assemblies externally mounted vertically on its rear wall, a telescopic leg assembly externally mounted vertically on each of its side walls in forward locations thereon rearwardly displaced from the front wall of the container structure so as to provide the latter with a cantilever front end, a swivel caster at the end of the leg of each leg assembly and swivel casters mounted on the bottom wall of the container structure at the cantilever front end and also proximately in front of the rear wall leg assemblies. With all legs of the leg assemblies extended, one can readily roll the container structure up to an elevated loading platform (such as a flatbed of a truck) so as to position the cantilever front end above the platform, then retract the legs of the forwardly located leg assemblies to lower the front end into caster engagement with the platform, thereafter push the container structure forwardly until the bottom casters near the rear wall leg assemblies are above the platform, and finally retract the legs of the rear wall container leg assemblies to lower the rear end of the structure into caster engagement with the platform, thereby facilitating further manual maneuvering to complete the loading of the container structure on the platform.

## Claims

### Claim 1

A container structure comprising, in combination: a bottom wall; an upstanding front wall; an upstanding rear wall; an opposed pair of upstanding side walls; a first pair of like telescopic leg assemblies vertically mounted upon the exterior surface of said rear wall in spaced parallel relationship with one another, each leg assembly being inwardly displaced from a corner-defining junction of a respective side wall and said rear wall by an amount substantially less than its spacing from the other leg assembly; a second pair of like telescopic leg assemblies, each of which is vertically mounted upon the exterior surface of a respective side wall and is rearwardly equidistant from said front wall by an amount leaving said container structure with a substantial cantilever portion terminating in said front wall; a first set of swivel casters mounted directly on said bottom wall forwardly of said first pair of telescopic leg assemblies and proximate thereto; a second set of swivel casters mounted directly on said bottom wall within the cantilever portion of said container structure; and a respective swivel caster mounted on the lower end of the leg of each telescopic leg assembly; the arrangement being such that, with the legs of the telescopic leg assemblies initially extended, one can roll said container structure along a horizontal base surface to position said cantilever portion over a stationary parallel elevated surface, then retract the legs of said second pair of telescopic leg assemblies to lower said cantilever portion and obtain rolling support thereof on said elevated surface by said second set of swivel casters, thereafter forwardly roll said container structure until said first set of swivel casters is positioned over said elevated surface, and finally retract the legs of said first pair of telescopic leg assemblies to obtain rolling support of the rear end of the container structure on said elevated surface by said first set of swivel casters, thereby to facilitate completion of the loading of the container structure onto said elevated surface.