Receptacles – Closures – Secondary closure within parameter of primary closure
Reexamination Certificate
2000-07-10
2001-12-04
Newhouse, Nathan J. (Department: 3727)
Receptacles
Closures
Secondary closure within parameter of primary closure
C220S259300, C220S831000, C220S847000, C222S556000
Reexamination Certificate
active
06325231
ABSTRACT:
The present invention relates to a container for foodstuffs having a container shroud and a base and a top, whereby, at least the top is made of plastic and has a reclosable discharge aperture.
Such containers are known in practice in as much as they are manufactured from plastic as a single piece or do not have a totally satisfactory, or any, discharge aperture for the discharging of food products from the containers.
For example U.S. Pat. No. 4,213,537 discloses a plastic cover for a disposable paper receptacle, but the cover does not have a reclosable discharge aperture.
U.S. Pat. No. 5,743,427 discloses a lid of a container with a discharge aperture in the lid to allow the consumption of a drink through the lid but the discharge aperture area is designed only for fluid foodstuffs.
U.S. Pat. No. 4,298,146, U.S. Pat. No. 4,310,105 and U.S. Pat. No. 4,334,639 disclose a cap for a container where the cap lid may be laid away from the cap when it is in an open state.
However, none of the above prior art documents disclose a container having a top with a reclosable discharge aperture suitable for the easy dispensing of a non-liquid foodstuff.
The invention is directed towards the problem of fitting a top of the aforementioned type with a container shroud manufactured separately to provide the container whilst also providing effective and consumer-acceptable discharging of the container's foodstuff contents, particularly, non-liquid foodstuffs.
These problems have been addressed by designing the top in a substantially convex form with a circumferential lower edge to connect the top with the container shroud thereby allowing the manufacture of the container shroud and the top separately and subsequently connecting them to each other and with the top having a discharge aperture and a cap therefore in a substantially concave form.
Accordingly, a container with a container shroud which has a base and a top and at least the top is made of plastic and has a reclosable discharge aperture, with the top having a lower circumferential edge to connect the top with the container shroud, and the discharge aperture being covered by a cap which is connected to the top by a film hinge located in the vicinity of the highest point on the top characterised in that the top is substantially convex in form and the cap is substantially concave in form and wherein the cap when in its' open form can be laid against the top and in this state the cap is largely congruent with the surface of the top is provided according to the present invention.
The container shroud defines the sides of an internal cavity of the container with a top and base defining the top and bottom part respectively of the internal cavity.
By substantially convex is meant a shape that has all the features of a convex shape and overall convex outline, but, wherein the sides of the convex shape may be in parts more angular than the overall convex shape appears.
By substantially concave is meant a shape that has all the features of a concave shape and an overall concave outline, but, wherein the sides of the concave shape may be in parts more angular than the overall concave shape appears.
The container is for foodstuffs and, in particular, frozen foods such as frozen water ices and frozen confections and the like. However, any foodstuff that it is desirable to dispense easily from a re-closable container may be packaged in it.
The discharge aperture is covered by a cap which is connected to the top by a film hinge. The cap is captively connected to the top by the film hinge making the opening and closure of the discharge aperture easy to accomplish. The film hinge is located in the vicinity of the highest point of the top and the cap can be laid against the top when the cap is in its' fully open state.
By “highest point” is meant that part of the top which extends further away from the base of the container, generally in a perpendicular direction, than do other parts of the top.
The cap is substantially concave in form and is largely congruent with the convex surface of the top when the cap is in its fully open state and laid against the top.
It is especially preferred that the container shroud is wound from a flat blank, particularly a card blank. In a particular aspect of the present invention a container having a plastic top and a card, paper or other similar non-plastic material container shroud is provided.
A further aspect of the invention lies in moulding the cap onto the top by a circumferential perforation interrupted by the film hinge. This has the advantage of allowing a hygienic and tamper-evident seal to be provided to the cap.
A further highly-advantageous aspect of the invention is that the container shroud is designed as a cone opening, or expanding, downwards (ie in the shape of a cone) so that the circumference of the container at the part connecting with the top is smaller than the circumference of the container at the part connecting with the base.
A further advantageous development of the invention is that the base is generally flat, or level, and the edge of the base is connected to the lower edge of the container shroud. The advantage of this arrangement is enhanced stability for the container.
It is also highly advantageous if, in accordance with the further aspect of the invention, the base has a central web drawn inwards. This further improves the stability of the container and also facilitates its' suitability for handling.
It is also highly advantageous if the side of the base facing the internal cavity of the container is capable of accepting a seal. Simple sealing of the base on to a suitably moulded edge of the container shroud is thus possible.
In a further aspect of an invention it is also favourable to make the base as a deep drawn card disk capable of accepting a seal on its' inside, particularly, by coating it with polyethylene. This allows a variety of water-based products to be packaged in the container without affecting the integrity thereof, for example, a frozen water based product.
A further advantageous aspect of the invention is that the cap is formed with a pull tab, or similar part, moulded onto it and the top has a connection complimentary to the pull tab so that it can act as a snap connection for the pull tab, or similar part, and wherein the pull tab engages with the snap connection when the cap is in its' fully open state and against the top.
This provides the advantage of being able to effectively retain the cap away from the discharge aperture to allow effective and easy discharge of the container's contents.
The dimensions of the container will be determined according to the type of foodstuff being placed inside the container and the portion size thereof to be packaged in the container. Preferably the container is of sufficient dimensions to hold a single serving of a foodstuff such as frozen confection or water ice.
REFERENCES:
patent: 4265367 (1981-05-01), Vogt
patent: 4756442 (1988-07-01), Halm et al.
patent: 5273177 (1993-12-01), Campbell
patent: 5301827 (1994-04-01), Valyi
patent: 5503289 (1996-04-01), Fox
patent: 5673811 (1997-10-01), Dickinson et al.
patent: 5839601 (1998-11-01), Van Melle
patent: 3530373 (1987-02-01), None
patent: 569747 (1993-11-01), None
patent: 3-187846 (1991-08-01), None
patent: WO95/35245 A (1995-12-01), None
Patent Abstract of Japan, vol. 098, No.. 003, Feb. 27, 1998 & JP 09 290849 A (Yoshino Kogyosho Co. see abstract.
Ketting Willem-Hendrik
Richardson Sean Anthony
Newhouse Nathan J.
Pillsbury & Winthrop LLP
Unilever Patent Holdings B.V.
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