AU613116B2 - Container closure - Google Patents

Description

ibi ii i ii Australia PATENTS ACT 1952 COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE Form Short Title: Int. Cl: Application Number: Lodged: 0e0 0 x 00 0 :Complete Specification-Lodged: 0 o a Accepted: 0o Lapsed: .00 Published: o Priority: t i t Related Art: 0 00 1 0 i Name of Ap 00 a plicant: TO BE COMF-ETED BY APPLICANT NICKOLAUS ENGLERT Address of Applicant: 51 Betula Avenue, Vermont, Victoria, 3133, Australia Actual Inventor: NICKOLAUS ENGLERT Address for Service: CALLINANS Patent Attorneys, of 48-50 Bridge Road, Richmond, State of Victoria, Australia.

Complete Specification for the invention entitled: CONTAINER CLOSURE The following statement is a full description of this invention, including the best method of performing it known to me:-* SNote: The description is to be typed in double spacing, pica type face, in an area not exceeding 250 mm in depth and 160 mm in wicth, on tough white paper of good quality and it is to be inserted inside this form.

This invention relates to beverage container closures and refers particularly, though not exclusively, to closures for beverage cans.

Cans are extensively used for beverages. They are used indoors and, particularly, outdoors. The beverages in the can may be aerated, naturally sparkling, or still. They may be alcoholic or non-alcoholic.

00ooo00 Problems have arisen where the use of cans for 0 00 °o0oo0 beverages could be a danger to the consumer. The dangers are 0 0 Soo 10 the European wasps and other pests. It has been known for pests 0 00 0 0 00oo0 0 such as, for example, European wasps to enter an opened beverage 00 a 0 0 can after being attracted by the sweetness of the contents.

Naturally, once inside, the wasp cannot be seen by a consumer.

0 00 Upon the consumer taking a further drink directly from the can, a o0 the wasp may also be ingested by the consumer. The wasp would 0 o0 00000 normally be caught in the throat where their natural tendency o0 ooo 0 to sting would occur. As European wasps can sting repeatedly 0 (and do so quite often) a great deal of swelling can take place ooo00 o o in and around the throat. In the extreme, the throat may completely close and the person could die from asphyxiation.

It is therefore the principal object of the present invention to provide a means for closing a beverage container, at least temporarily, to prevent the unwanted ingress of contaminants and pests.

2.

With the above and other objects in mind, the invention provides a container closure comprising a substantially flat disc adapted to fit on the container and having an opening therethrough, said disc being rotatable about its central axis to align said opening with an opening in said container such that further rotation causes said disc to cover said container opening; said disc having a depending peripheral rib to assist in locating and retaining said disc in position relative to said container; said disc having two lugs projecting axially upwardly therefrom, the location and spacing of said lugs enabling an outer end of a lift tab of said container to be located and held therebetween.

oo0 o 10o A preferred embodiment of the invention shall now be described by 002 o° way of non-limitative example only and with reference to the accompanying 00 0 0 0 0 0 00 illustrative drawings.

In the drawings: iFigure 1 is a top perspective view of the upper regions of a can, partially opened, showing an embodiment of the present invention prior to assembly; Figure 2 is a top perspective view corresponding to that of Figure 1 but after assembly; Figure 3 is a top plan view of the assembly of Figure 2 after rotation of the embodiment of the present invention; Figure 4 is a vertical cross-sectional view along the lines of and in the direction of arrows 4-4 of Figure 3; 3.

.1 I Figure 5 is a vertical cross-section view corresponding to that of Figure 4 but for a second embodiment of the present invention; and 0 0 0 a09 I 0 00 o 3a

AA

Figure 6 is a perspective view of a third embodiment of the present invention.

The particular embodiment of Figures 1 to 5 is for use with cans, and in particular those cans normally used for beer, mixed drinks, and soft drinks. Some such cans have a ring which is lifted to enable the sealing can closure to be removed. The present invention can be used with such cans hereinafter called the "ring pull" cans.

Another form of can has a tab which is lifted and 10 pressed over to force the sealing can closure to be forced into e the can but still being attached to the t The present invention can be used with such cans hereinafter called "lift tab" cans.

To refer now to the drawings, there is shown a lift tab can 10 having a tab 12 attached to the top 14 of the can by a rivet 16. The top 14 has a peripheral channel 18. There is provided a relatively flat disc 20 which is sized to fit onto l the top 14 of cans 10, normally after it has been opened. Around the outer periphery of the disc 20 is a downwardly directly rib 22 which fits into channel 18 to help locate the disc 20 in the correct position, and to assist in its operation. The disc has an opening 24 which is at least as large as the can opening 26. In addition, two axially upwardly directed lugs 28 are provided and which are able to be contacted or gripped by at least one finger of a user to enable the disc 20 to be rotated about 4.

its longitudinal axis.

In operation, the can 10 would first be opened by lifting tab 12 in the usual manner. The disc 20 would then be placed on the top 14 of the can 10 with its opening 24 aligned over the can opening 26.

The tab 12 remains attached to the can by the rivet 16. The tab 12 is passed through the disc opening 24 and pressed over the disc 20 to engage with the lugs 28 to assist in keeping 000 o0000o the disc 20 in position and to hold the tab 12 out of the way.

o°o°°0 This lug may be provided with an undercut (not shown) to assist 0 00 0o oo with this if desired.

00 0 0o 0o It is now possible to dispense or drink the contents of can 10. The disc 20 can then be rotated about its longitudinal 0 00 0 axis using the lugs 28 until the can opening 26 was covered (see a s* Figure When it was next desired to dispense contents from the can 10, or to drink from the can 10, the disc20 can again be rotated using the lugs 28 until the disc opening 24 was aligned over the can opening 26.

The disc 20 may be made of any suitable material such as, for example, a plastics material nylon) or aluminium.

It may be a separate, removable component as shown or may be integral with the can top. The disc 20 may be made as a complete, circular disc as shown or may be made as a segment of a circle.

With the lift tab cans as illustrated, the disc 20 may be as a segment of a circle and could be integral with the tab 12. In this way, once the can 10 were opened the tab 12 would ii-l be pushed back to as near as possible to its original position and could then be rotated about the rivet 14 to cover and uncover the can opening 26. This would prevent the need for a separate component. In Figure 5, the disc 20 does not have rib 22. Instead it has a roll-over rim 30 adapted to fit over the rim of can In all other respects, the disc 20 is identical to that of Figures 1 to 4.

0 00~0As shown in Figure 6, the disc 20 may have an opening 0 I D0 o0 24' of different shape, and different lugs 28'. The size and shape of the opening 24 or 24', and the lugs 28 and 28' may be o 00 01)00 varied to suit the various sizes and shapes of can openings and 00 Q 0 a lift tabs.

Whilst there has been described in t foregoing o 00 0 0 description preferred constructions of beverige container closures incorporating the prefer-red features of the present invention, .0044it will be understood by those skilled in the technical field 0 concerned that many variations in details of design and 0 0 aconstruction may be made without departing from the essential 00 nature of the present invention, the scope of which is to be determined from the following claims.

6.

Claims (2)

1. A container closure comprising a substantially flat disc adapted to fit on said container and having an opening therethrough, said disc being rotatable about its central axis to align said opening with an opening in said container such that further rotation causes said disc to cover said container opening; said disc having a depending peripheral rib to assist in locating and retaining said disc in position relative to said container, and two lugs projecting axially upwardly therefrom, the location and spacing of said lugs enabling an outer end of a lift tab of said container to be located and held therebetween. Q10,

2. A container closure substantially as hereinbefore described with 0 a 4 0 1 a t reference to the accompanying illustrative drawings. 00 a 0 DATED this 22nd day of April 1991 NICKOLAUS ENGLERT By his Patent Attorneys CALLINAN LAWRIE -7- i ir.c. ~I -C i