AU712456B2

AU712456B2 - Closure having tube aperture

Info

Publication number: AU712456B2
Application number: AU21441/97A
Authority: AU
Inventors: Anthony Polykandriotis
Original assignee: Poly Industries Pty Ltd
Current assignee: Poly Industries Pty Ltd
Priority date: 1996-03-26
Filing date: 1997-03-26
Publication date: 1999-11-04
Anticipated expiration: 2017-03-26
Also published as: AU2144197A

Description

WO-97/35776 PCT/AU97/00201 1 Closure having tube aperture Field of the Invention The present invention relates to closures and in particular to a closure for use in sealing containers for fluids.

Background of the Invention Like the manufacturers of foodstuffs and beverages, the manufacturers of motor vehicle oils, such as engine and transmission oil, have become concerned to ensure that the product sold to consumers has not suffered tamper prior to its use by the consumer. To provide a greater indication of attempted or successful tamper, tamper evident bands that at least partially fracture from the closure on removal of the closure from the container have been used.

Because of the increase in recent years of self-service petrol stations and the sale of vehicle products, including oil, from convenience and department stores, it has now become common for the general public to both check their vehicle's various oil levels and top up the level as required. In order to ensure a minimum of fuss and miess. oil is now sometimes sold in containers in which instead of having to remove the closure, a tube is prepositioned through an aperture in the top of the closure. The tube can be extended by thie consumner without removing the closure to allow more precise pouring of the oil where required and so lessen the likelihood of mess.

While the provision of a tube through an aperture in the closure has a number of advantages, it does have the disadvantage of providing an alternative means of accessing and tampering with the contents of the container to the later detriment of the consumer of the product.

Sumimary of the Invention Accordingly, in a first aspect, the present invention consists in a closure for a container, the closure comprising a top portion having an outer surface and a skirt depending from the top portion, there being an aperture through the top portion adapted to receive therethrough a tube having a first end, the outer surface being connected by a frangible connection to a cap adapted to prevent fluid communication between the first end of a tube received through the aperture and the outer surface.

In one embodimient, the cap for the tube is connectLed by the frangible connection to a collar that surrounds the aperture and extends upwardly WO 97/35776 WO 9735776PCT/AU97/00201 2 from the top portion. The inner surface of the collar is preferably arranged to guide the tube through the aperture and also provide a seal to substantially prevent leaking of the contents of the container between the tube and the closure.

In a further embodiment, a further collar that surrounds the aperture can extend downwardly from the top portion to further help guide the tube through the aperture. The inner surface of the collar extending downwardly from the top portion can be frusto-conical to enhance the engagement and the sealing between the collar and the tube.

The frangible connection can comprise a plurality of frangible bridges or an area of weakness that will easily fracture onl movement of the cap for the tube relative to the top portion. Fracture of the frangible connection serves to readily identify to the consumer that the tube has been previously extended fromn the container and that tamper of the contents of the contents may have occurred.

The cap for the tube can have a circular top portion arid a skirt depending from an underside of the top portion. This circular top portion can extend outwardly beyond the radial extent of the skirt. An annular sealing rib can also extend from the underside of the top portion and seal with the outer surface, inner surface and/or the end of the tube. The skirt of the cap preferably has engagement means arranged to engage the cap with the tube. The tube is preferably a resiliently flexible material and the engagement means preferably comprises a screw thread that engages with the outer surface of the resiliently flexible tube.

The container closure can also have an annular sealing rib extending downwardly from the underside of its top portion and pr~oximate the skirt.

This annular sealing rib can also seal with either the outer surface, inner surface and/or the end of the container.

Tine inner surface of the skirt depending from the top portion of the container closure preferably has a screw thread complementary to a screw thread oil the neck of the container.

A free edge of the skirt of the container closure is also preferably connected by a frangible connection to a tamper evident band. This frangible connection can comprise a plurality of frangible bridges or an area of weakness between the skirt and the band. The inner surface of the band preferably has a locking means which engages with a complementary locking WO-97/35776 WO 9735776PCT/AU97/00201 3 means oil the neck of the container below the screw thread thereon. On removal of the closure from the container, the locking means on the band engages with the locking means on tlie neck of the container such that at least partial fracture occurs to the frangible connection between the skirt and the band. In one embodiment, the locking means on the inner surface of the band can comprise inwardly extending projections that engage under the outwardly extending projections on the container neck as the closure is removed from the container.

The closure canl be fabricated to seal a container for liquids. In a preferred embodiment, the closure is fabricated from materials suitable for sealing a container for oils and, in particular, various oils for motor vehicles and the like. 11n one emnbodiment, the closure is fabricated from a resilient plastics material, preferably polypropylene. The tube is preferably fabricated from- poly(vinyl chloride).

Ini a further aspect, the present invention consists in a closure according to the present invention with a tube being positioned through the aperture and sealed by the cap.

Ini yet a further aspect, the present invention consists in a container having the closure described above mounted thereon.

Brief Description of the Drawing A preferred embodiment of the present invention will now be described with reference to the accompanying drawings, in which: Fig. 1 is a part side elevational view, part sectional view of one embodiment of a closure according to the present invention mounted onl a container; Fig. 2 is an enlarged view of the closure depicted in Fig. 1; and Fig. 3 is a half plan, half inverse plan view of the closure of Fig. 2.

Preferred Mode of CarryingS out the Invention A closure suitable for sealing a container is generally depicted as in the drawings.

The closure 10 comprises a ten-sided top portion 11 and a skirt 12, having a cylindrical inner surface 12a, depending from the periphery thereof.

Onl the innier surface 12a of the skirt 12 is a screw thread 13 which is arranged to engage with a complementary screw thread 14 onl the neck of a container WO 97/35776 WO 9735776PCT/AU97/00201 4 Depending from the underside of the top portion 11 is an annular sealing rib 16 which seals with the inner surface of the neck of the container on mounting of the closure 10 to the container 15. Connected by frangible bridges 18 to the free end of the skirt 12 is a tamper evident band 17, The band 17 has a plurality of tabs 19 extending inwardly and upwardly from the free edge of the band 17. The tabs 19 are arranged to engage under an annular bead 21 present on the neck of the container upon mounting of the closure 10 to the container 15. On mounting, the tabs 19 slide up and over the bead 21 and then lock in place underneath it. On removal of the closure 10 from the container 15, the tabs 19 engage under the bead 21 thereby causing fracture of the frangible connections 18.

Located centrally in the top portion 11 is a cap generally depicted as The cap 30 comprises a top portion 31 and a skirt 32 depending fromn an underside of the top portion 31. The free end of the skirt 32 is connected by a plurality of frangible bridges 34 to a collar 33 which is integral with the top portion 11 of the container closure 10. The collar 33 surrounds an aperture in the top portion 11. The collar 33, as is depicted in the drawings, has a downwardly extending frusto-conical portion 36. The frusto-conical surface 37 serves to improve the seal formed between the collar 33 and a poly(vinyl chloride) tube 22 (in cross-section in Fig. 1) extending through the aperture and so prevents the contents of the container 15 leaking around the outside of the tube 22.

The top portion 31 of the cap 30 has an annular sealing rib 38 extending downwardly therefrom and arranged to seal with the inner surface 23 of the tube 22. The inner surface of the skirt 32 also has a screw thread 39 arranged to engage with the outer surface of the tube 22 and so hold the cap in place on the tube 22.

The closure 10, including the cap 30, is mnoulded in one piece from polypropylene which is suitable for sealing containers for vehicles oils. such as engine and transmission oil. Once moulded. the poly(vinyl chloride) tube 22 is inserted upwardly through the aperture 35 and screwed into the cap such that the thread 39 engages the outer surface of the tube 22 and the sealing rib 38 seals the tube 22.

Once the tube 22 is positioned within the closure 10, the closure is mounted in the usual manner on a previously filled container.

WO97/35776 PCT/AU97/00201 On purchase, the consumer may wish to pour a large quantity of oil from the container 15. In this case, the consumer may wish to remove the entire closure 10 from the container 15. By simply unscrewing and removing the closure 10, the contents are readily poured from the container 15. This manner of removal of the closure 10 will lead to fracture of the frangible bridges 18 and these will provide an indication that the closure 10 has been removed previously from the container 15. If, however, the consumer only wishes to dispense a small quantity of the contents with little or no mess, tile option is open to use the tube 22. This is accessed by twisting the cap 30 to fracture the frangible bridges 34 and remove the cap 30 from the tube 22.

The tube 22 is then drawn upwardly to extend the tube 22 partially out of the container 15. The contents are then poured from the container 15 as required by the consumer.

The tube 22 can be re-sealed by screwing the cap 30 back onto the tube 22 and pushing the tube 22 back into the container The fracture of the frangible bridges 34 serves to lessen the likelihood of previous tamper of the cap going unnoticed by the consumer.

It will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the spirit or scope of the invention as broadly described. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Claims

1. A closure for a container, the closure comprising a top portion having an outer surface and a skirt depending from the top portion, there being an aperture through the top portion adapted to receive therethrough a tube having a first end, a collar surrounding the aperture that is intergral with and extends upwardly and downwardly from the top portion, an inner surface of the collar guiding the tube through the aperture and also providing a seal to substantially prevent leaking of the contents of the container between the tube and the closure for all possible positions of the tube in the collar relative to the closure, the collar being connected by a frangible connection to a cap adapted to prevent fluid communication between the first end of a tube received through the aperture and the outer surface.

2. The closure of claim 1wherein the downwardly extending collar has a frusto-conical inner surface to enhance the engagement and the sealing between the collar and the tube.

3. The closure of claims 1 or 2 wherein the frangible connection comprises a plurality of frangible bridges or an area of weakness extending between the cap and the top portion.

4. The closure of claim 3 wherein the cap has a top portion and a skirt extending from an underside thereof, the frangible connection extending between a free end of the skirt of the cap and the top portion of the container closure.

The closure of claim 4 wherein the top portion of the cap extends outwardly beyond the radial extent of the skirt.

6. The closure of claims 4 or 5 wherein an annular sealing rib extends from the underside of the top portion of the cap and can seal with the outer surface, inner surface and/or end of the tube.

7. The closure of any one of claims 4 6 wherein the skirt of the cap has engagement means arranged to engage the cap with the tube.

8. The closure of claim 7 wherein the tube is a resiliently flexible material and the engagement means comprises a screw thread that engages with the outer surface of the resiliently flexible tube.

9. The closure of any one of the preceding claims wherein the container closure has an annular sealing rib extending downwardly from the underside of the top portion proximate the skirt and can seal with the outer surface, R;t >4' I' *Ti 7 0 0 2 0 RECEIVED I 19 7 inner surface and/or end of the container on mounting of the closure to the container.

The closure of any one of the preceding claims wherein the inner surface of the skirt depending from the top portion of the container closure has a screw thread complementary to a screw thread on the neck of the container.

11. The closure of any one of the preceding claims wherein a free edge of the skirt of the container closure is connected by a frangible connection to a tamper evident band.

12. The closure of claim 11 wherein the frangible connection between the skirt of the container closure and the band comprises a plurality of frangible bridges or an area of weakness between a free edge of the skirt of the container closure and the band.

13. The closure of claims 11 or 12 wherein the inner surface of the band has a locking means which is engageable with a complementary locking means on the neck of the container, such that on removal of the closure from the container, the locking means on the band engages with the locking means on the container and causes at least partial fracture of the frangible connection between the skirt and the band.

14. The closure of any one of the preceding claims wherein the closure is adapted to seal a container for liquids, including oils for vehicles.

A closure as defined in any one of the preceding claims with a tube being positioned through the aperture and sealed by the cap.

16. A container having the closure as defined in any of the preceding claims mounted thereon. Tv