Special receptacle or package – With pallet feature
Patent
1994-02-07
1995-04-11
Fidei, David T.
Special receptacle or package
With pallet feature
220485, 220683, B65D 1900
Patent
active
054050065
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a pallet container with a thin-walled plastic container for liquid or flowable fill substances, with a wire grid or a tubular grid consisting of horizontal and vertical grid rods (tubular rods), which tightly surround the plastic container in the manner of a support casing, and with a floor pallet on which the plastic container rests and to which the wire grid support casing is solidly connected, the wire-grid support casing consisting of one or two half-length grid plates, whose corner regions are bent at a right angle and which are solidly joined to one another in one or respectively two vertical junction regions.
Such a pallet container with a wire-grid support casing for the inner thin-walled plastic container is known from the DE-B 30 39 635. The wire-grid support casing is fastened on the floor pallet--a conventional flat pallet made of wood--by means of clasps, clamps, or claws which grip over the lowermost horizontally circumferential rod of the grid. The clasps or claws can be nailed (pinned) into the surface of the wooden pallet or they can be screwed onto the top plate of the pallet.
Pallet containers for industrial use must pass an official model inspection for approval, during which they must meet certain quality criteria. For example, interior pressure tests and fall tests are performed with filled pallet containers from specified fall heights. A special test is a ground fall flat on the floor pallet.
During such a fall test, it has appeared that, when striking the ground, the interior container tries to expand radially in all planar directions due to the kinetic energy and the impulse-like surge pressure. It often happens here that a sheath clinching of the horizontal grid rods of the support casing or the spot-welds of the vertical grid rods tear open. The fastening of the grid rods in the junction region of the support casing thus represents an important weak point. Since the wire-grid support casing is fixed in the junction region only at a few points, the wire grid is deformed and twisted very unevenly when the pallet container topples; the welding points of the wire grid sometimes tear apart, and the free ends of wire rods can damage the thin-walled plastic container.
SUMMARY OF THE INVENTION
It is an object of the present invention to eliminate these disadvantages and to specify a pallet container which provides, with simple means, better fixation of the grid plate in the vertically directed junction region, such that the wire-grid support casing will deform more uniformly and to a lesser extent when falling from greater heights, without the junction region tearing open and the interior of the container being at risk for damage or untightness.
By using a sheet-metal strip or a sheet-metal plate which covers several grid rods and whose outer edges have a simple bend (flange) or by slotting formed sheet-metal tabs (brackets) about vertical grid rods running respectively to the right and left parallel to the junction region of the grid plate of the grid support casing, on the one hand it becomes possible, by a simple production engineering process, to join/fix the wire grid physically and securely in the junction region and, on the other hand, this mutual fixation of the grid plate edges over a wide area represents a very flexible region which is also plastically deformable under over-stress, especially when the pallet container falls on the ground, such that extreme stresses of this kind will be withstood perfectly and a tearing apart of the grid casing as well as a lack of tightness in the plastic container will be prevented.
A special development of the invention provides that the sheet-metal strip be designed as a wider sheet-metal plate which covers at least two vertical grid rods on each side of the junction region and which grips and encompasses these covered grid rods with its respective outer edge and with the inner sheet-metal tabs that are punched out on three sides. The bent sheet-metal strips at the slotted outer edges
REFERENCES:
patent: 837383 (1906-12-01), Carlton
patent: 1439169 (1922-12-01), Kahan
patent: 3191723 (1965-06-01), Shoup
patent: 3225952 (1965-12-01), Stiles
patent: 3688937 (1972-09-01), Ellison
patent: 4281813 (1981-08-01), Garrity
patent: 4947988 (1990-08-01), Schutz
Burgdorf Marten
Ritter Hans
Fidei David T.
Mauser-Werke GmbH
LandOfFree
Pallet container does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pallet container, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pallet container will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1533143