Special receptacle or package – Structural features for vertical stacking – i.e. – similar... – Having vertical projecting element or recess for interlock
Patent
1988-06-23
1990-02-13
Marcus, Stephen
Special receptacle or package
Structural features for vertical stacking, i.e., similar...
Having vertical projecting element or recess for interlock
215100R, 215100A, 220 2383, B65D 2100, B65D 2300
Patent
active
048998850
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a container of plastic material provided with a base, side walls connected thereto and a top wall with a filling and/or pouring opening.
Such a container is often used for liquids or pourable substances, whereby the problem occurs that the container cannot be entirely emptied. This comes about because the container is formed such that it is stackable. For that purpose the pouring opening may not protrude above the top wall, so that when emptying takes place substance remains behind in the container.
The invention has for its object to form the container such that this problem is obviated, whereby the container nevertheless remains stackable.
SUMMARY OF THE INVENTION
The container according to the invention is distinguished in that the peripheral edge of the top wall connected onto the side wall lies at a shorter distance from the base than the filling and/or pouring opening, and whereby a stacking attachment piece is utilized which has a lower bounding plane fitting onto the top wall as well as an upper surface complementary to the base of the container.
Since the filling and/or discharge opening lies higher than the peripheral edge of the top wall, 100% emptying of the container is always guaranteed. The attachment piece nevertheless offers the possibility of stacking, because the space between the top wall and the base of respective containers stacked on one another is filled by the attachment piece.
If the container is formed with a filling and/or pouring stub which protrudes above the top wall, the height of the attachment piece will in accordance with the invention then be equal to at least the height of the stub. The attachment piece hereby also achieves a protecting function because, in the case the container falls over, the stub is safeguarded from lateral shocks by the attachment piece.
In one embodiment the attachment piece is formed with open portions for accomodating handles arranged on the top wall of the container. The manageability of the container is thereby not only facilitated but also made safer. Fastening of the attachment piece to the top wall of the container can be performed in particularly efficient manner by providing the openings in the attachment piece with a base plate having through-running holes through each of which is fed a projection, to which can be attached a handle. As a result of this fastening the attachment piece is locked onto the container.
Finally, the container may be provided with a aerating system to prevent "gurgling" during rapid emptying.
Above mentioned and other characteristics will be elucidated with reference to the figure description following hereinafter of an embodiment.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 shows a perspective top view of a container according to the invention,
FIG. 2 is a perspective top view of the container as in FIG. 1, whereby the composite parts are in exploded view.
FIGS. 3 and 4 are perspective views of a container according to a second embodiment of the invention and,
FIG. 5 is a cross-sectional view according to line V--V in FIG. 4.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The container shown in the figures is preferably made from synthetic resin material like HMWHDPE, LLPDE, LDPE, PP, EVA, PBT chlorinated PE, UHDPE, PET, PPO, PC or mixtures and copolymers, c.g. multilayers based on these materials. The material can be provided with additives like an EV stabiliser, anti-static agent, impact modifier and compatibilisors. The container consists of a hollow body 1 that includes a base (not visible) having side walls 2 connecting thereto which connect at the top to the peripheral edge 3a of a top wall 3. This is provided at a randomly suitable position with a filling and/or pouring stub 4 which can be formed on the outside with a screwthread for placing a screw cap 5. This is a per se known closure for a container. The pouring stub can be formed with an aerating hole 4' having connected to it an aerating channel (not shown) along the inne
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patent: 2563141 (1951-08-01), Vazzano
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patent: 4331239 (1982-05-01), Ortal
patent: 4541529 (1985-09-01), Hestehave et al.
patent: 4708253 (1987-11-01), Mednis
patent: 4785931 (1988-11-01), Weir et al.
Castellano Stephen
Marcus Stephen
Wiva Verpakkingen B.V.
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